Kai-Erik Peiponen
Professor, Emeritus
Department of Physics and Mathematics, Faculty of Science, Forestry and Technology
kai.peiponen@uef.fi
Research groups
Projects
Publications
209/209 items-
Hyperspectral imaging for identification of irregular-shaped microplastics in water
Gebejes, A; Hrovat, B; Semenov, D; Kanyathare, B; Itkonen, T; Keinänen, M; Koistinen, A; Peiponen, K-E; Roussey, M. 2024. Science of the total environment. 944: -
Preparation of synthetic micro- and nano plastics for method validation studies
Hrovat, Blaž; Uurasjärvi, Emilia; Viitala, Mirka; del Pino, Ana Franco; Mänttäri, Mika; Papamatthaiakis, Nikolaos; Haapala, Antti; Peiponen, Kai; Roussey, Matthieu; Koistinen, Arto. 2024. Science of the total environment. 925: -
Detection and identification of microplastics directly in water by hyperspectral imaging
Gebejes, Ana; Kaynathare, Boniphace; Hrovat, Blaž; Semenov, Dmitri; Itkonen, Tommi; Keinänen, Markku; Koistinen, Arto; Peiponen, Kai-Erik; Roussey, Matthieu. Teoksessa: (toim.) , 2023. . s. 09002. -
Prediction of nanoplastics aggregation in wastewaters
Peiponen, Kai-Erik; Roussey, Matthieu. 2023. Water emerging contaminants & nanoplastics. 2: -
Sorting microplastics from other materials in water samples by ultra-high-definition imaging
Peiponen, Kai Erik; Kanyathare, Boniphace; Hrovat, Blaž; Papamatthaiakis, Nikolaos; Hattuniemi, Joni; Asamoah, Benjamin; Haapala, Antti; Koistinen, Arto; Roussey, Matthieu. 2023. Journal of the european optical society: rapid publications. 19: . 14 -
Imaging of water samples for the detection and identification of microplastics
Roussey, Matthieu; Kanyathare, Boniphace; Hrovat, Blaž; Papamatthaiakis, Nikolaos; Hattuniemi, Joni; Asamoah, Benjamin O.; Haapala, Antti; Koistinen, Arto; Peiponen, Kai-Erik. Teoksessa: (toim.) , 2022. . s. . -
Detecting Microplastics with Optics
Peiponen, Kai-Erik; Asamoah, Benjamin O; Kanyathare, Boniphace; Räty, Jukka; Roussey, Matthieu. 2020. Optics and photonics news. 31: 24-31 -
Identification of Plastic Type and Surface Roughness of Film-Type Plastics in Water Using Kramers-Kronig Analysis
Kanyathare, Boniphace Elphace; Asamoah, Benjamin; Ishaq, Muhammad Umair; Amoani, James; Räty, Jukka; Peiponen, Kai-Erik. 2020. Chemosensors. 8: 88 -
Laser beam scattering for the detection of flat, curved, smooth, and rough microplastics in water
Asamoah, BO; Amoani, J; Roussey, M; Peiponen, K-E. 2020. Optical review. 27: 217-224 -
On optical sensing of surface roughness of flat and curved microplastics in water
Asamoah, Benjamin; Roussey, Matthieu; Peiponen, Kai-Erik. 2020. Chemosphere. 254: 126789 -
Optical screening for presence of banned Sudan III and Sudan IV dyes in edible palm oils
Andoh, Sampson Saj; Nyave, Kenneth; Asamoah, Benjamin; Kanyathare, Boniphace; Nuutinen, Tarmo; Mingle, Cheetham; Peiponen, Kai-Erik; Roussey, Matthieu. 2020. Food additives and contaminants part a: chemistry analysis control exposureand risk assessment. 37: 1049-1060 -
Optical transmission spectra study in visible and near-infrared spectral range for identification of rough transparent plastics in aquatic environments
Kanyathare, B; Asamoah, BO; Ishaq, U; Amoani, J; Räty, J; Peiponen, KE. 2020. Chemosphere. 248: 126071 -
Simultaneous Investigation of the Liquid Transport and Swelling Performance during Tablet Disintegration
Al-Sharabi, Mohammed; Markl, Daniel; Mudley, Theona; Bawuah, Prince; Karttunen, Anssi-Pekka; Ridgway, Cathy; Gane, Patrick; Ketolainen, Jarkko; Peiponen, Kai-Erik; Rades, Thomas; Zeitler, J. Axel. 2020. International journal of pharmaceutics. 584: 119380 -
A prototype of a portable optical sensor for the detection of transparent and translucent microplastics in freshwater
Asamoah, BO; Kanyathare, B; Roussey, M; Peiponen, KE. 2019. Chemosphere. 231: 161-167 -
A prototype of an optical sensor for the identification of diesel oil adulterated by kerosene
Kanyathare, Boniphace; Kuivalainen, Kalle; Räty, Jukka; Silfsten, Pertti; Bawuah, Prince; Peiponen, Kai-Erik. 2018. Journal of the european optical society: rapid publications. 14: 3 -
Characterisation of Pore Structures of Pharmaceutical Tablets: A Review
Markl, D; Strobel, A; Schlossnikl, R; Bøtker, J; Bawuah, P; Ridgway, C; Rantanen, J; Rades, T; Gane, P; Peiponen, KE; Zeitler, JA. 2018. International journal of pharmaceutics. 538: 188-214 -
Hand-Held Refractometer-Based Measurement and Excess Permittivity Analysis Method for Detection of Diesel Oils Adulterated by Kerosene in Field Conditions
Kanyathare, B; Peiponen, KE. 2018. Sensors. 18: 1551 -
Imaginary optical constants in near-infrared (NIR) spectral range for the separation and discrimination of adulterated diesel oil binary mixtures
Kanyathare, Boniphace; Asamoah, Benjamin; Peiponen, Kai-Erik. 2018. Optical review. 2019; 26: 85-94 -
Investigating elastic relaxation effects on the optical properties of functionalised calcium carbonate compacts using optics-based Heckel analysis
Bawuah, Prince; Karttunen, Anssi-Pekka; Markl, Daniel; Ridgway, Cathy; Korhonen, Ossi; Gane, Patrick; Zeitler, J Axel; Ketolainen, Jarkko; Peiponen, Kai-Erik. 2018. International journal of pharmaceutics. 544: 278-284 -
Laser light scattering from rough glass liquid interface: a case study of screening of adulterated diesel oils
Peiponen, Kai-Erik; Kanyathare, Boniphace; Asamoah, Benjamin. 2018. Asian journal of physics. 27: 467-474 -
Outlook on optical identification of micro- and nanoplastics in aquatic environments
Peiponen, Kai-Erik; Räty, Jukka; Ishaq, Umair; Pélisset, Ségolene; Ali, Rizwan. 2018. Chemosphere. 214: 424-429 -
Resolving the rapid water absorption of porous functionalised calcium carbonate powder compacts by terahertz pulsed imaging
Markl, Daniel; Wang, Parry; Ridgway, Cathy; Karttunen, Anssi-Pekka; Bawuah, Prince; Ketolainen, Jarkko; Gane, Patrick; Peiponen, Kai-Erik; Zeitler, J Axel. 2018. Chemical engineering research and design. 132: 1082-1090 -
Scanning of skin gloss by a diffractive optical element-based handheld glossmeter
Asamoah, Benjamin; Peiponen, Kai-Erik. 2018. Optical review. 25: 694-700 -
Table model and portable optical sensors for the monitoring of time-dependent liquid spreading over rough surfaces
Asamoah, Benjamin Osae; Kanyathare, Boniphace; Peiponen, Kai-Erik. 2018. Journal of the european optical society: rapid publications. 14: 24 -
Terahertz absorption spectra of commonly used antimalarial drugs
Bawuah, Prince; Zeitler, J Axel; Ketolainen, Jarkko; Peiponen Kai-Erik. 2018. Optical review. 25: 444-449 -
Wavelength-dependent excess permittivity as indicator of kerosene in diesel oil
Kanyathare, Boniphace; Peiponen, Kai-Erik. 2018. Applied optics. 57: 2997-3002 -
Analysis of Anisotropic Pore Structures using Terahertz Spectroscopy and Imaging
Markl Daniel, Ridgway Cathy, Bawuah Prince, Gane Patrick, Ketolainen Jarkko, Peiponen Kai-Erik, Zeitler Axel. Teoksessa: -(toim.) , 2017. 42nd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2017. s. -. -
Characterization of the Pore Structure of Functionalized Calcium Carbonate Tablets by Terahertz Time-Domain Spectroscopy and X-ray Computed Microtomography
Markl Daniel, Wang Parry, Ridgway Cathy, Karttunen Anssi-Pekka, Chakraborty Mousumi, Bawuah Prince, Pääkkönen Pertti, Gane Patrick, Ketolainen Jarkko, Peiponen Kai, Zeitler J Axel. 2017. Journal of pharmaceutical sciences. 106: 1586-1595 -
Fast and non-destructive pore structure analysis using terahertz time-domain spectroscopy
Markl Daniel, Bawuah Prince, Ridgway Cathy, van den Ban Sander, Goodwin Daniel J, Ketolainen Jarkko, Gane Patrick, Peiponen Kai-Erik, Zeitler J.Axel. 2017. International journal of pharmaceutics. 2018; 537: 102-110 -
Gloss measurement in detection of surface quality of pharmaceutical tablets: a case study of screening of genuine and counterfeit antimalaria tablets
Bawuah Prince, Pääkkönen Pertti, Peiponen Kai-Erik. 2017. Journal of the european optical society: rapid publications. 13: 18 -
Impact of fountain solution addition level on tack and optical properties of the print of a mechanically distributed water-in-oil thin film emulsion
Tåg Carl-Mikael, Silfsten Pertti, Peiponen Kai-Erik, Gane Patrick A C, Ridgeway Cathy J. 2017. Nordic pulp and paper research journal. 32: 436-443 -
On terahertz absorption spectra of commonly used antimalarial drugs
Prince Bawuah, J. Axel Zeitler, Kai-Erik Peiponen. 2017. Faculty of Engineering, Niigata University, Japan -
On the Immersion Liquid Evaporation Method Based on the Dynamic Sweep of Magnitude of the Refractive Index of a Binary Liquid Mixture : A Case Study on Determining Mineral Particle Light Dispersion
Niskanen Ilpo, Räty Jukka, Peiponen Kai-Erik. 2017. Applied spectroscopy. 71: 1586-1592 -
On the role of API in determining porosity, pore structure and bulk modulus of the skeletal material in pharmaceutical tablets formed with MCC as sole excipient
Ridgway Cathy, Bawuah Prince, Markl Daniel, Zeitler J Axel, Ketolainen Jarkko, Peiponen Kai-Erik, Gane Patrick. 2017. International journal of pharmaceutics. 526: 321-331 -
Optics-based compressibility parameter for pharmaceutical tablets obtained with the aid of the terahertz refractive index
Chakraborty Mousumi, Ridgway Cathy, Bawuah Prince, Markl Daniel, Gane Patrick AC, Ketolainen Jarkko, Zeitler J Axel, Peiponen Kai-Erik. 2017. International journal of pharmaceutics. 525: 85-91 -
Reflectometric monitoring of the dissolution process of thin polymeric films
Laitinen R, Räty J, Korhonen K, Ketolainen J, Peiponen K-E. 2017. International journal of pharmaceutics. 523: 127-132 -
A structure parameter for porous pharmaceutical tablets obtained with the aid of Wiener bounds for effective permittivity and terahertz time-delay measurement
Bawuah Prince, Chakraborty Mousumi, Ervasti Tuomas, Zeitler J Axel, Ketolainen Jarkko, Gane Patrick A C, Peiponen Kai-Erik. 2016. International journal of pharmaceutics. 506: 87-92 -
A terahertz time-domain study on the estimation of optomechanical properties of pharmaceutical tablets using the Hashin-Shtrikman bounds for refractive index: a case study of microcrystalline cellulose and starch acetate compacts
Bawuah Prince, Peiponen Kai-Erik. 2016. Optical review. [Epub ahead of print 26 Feb 2016]: 1-8 -
Noninvasive porosity measurement of biconvex tablets using terahertz pulses
Bawuah Prince, Ervasti Tuomas, Tan Nicholas, Zeitler J Axel, Ketolainen Jarkko, Peiponen Kai-Erik. 2016. International journal of pharmaceutics. 509: 439-443 -
On the Correlation of Effective Terahertz Refractive Index and Average Surface Roughness of Pharmaceutical Tablets
Chakraborty Mousumi, Bawuah Prince, Tan Nicholas, Ervasti Tuomas, Pääkkönen Pertti, Zeitler J Axel, Ketolainen Jarkko, Peiponen Kai-Erik. 2016. Journal of infrared, millimeter, and terahertz waves. First online: 14 March 2016: 1-10 -
Terahertz spectroscopy theory
Peiponen K-E, Zeitler Axel J. Teoksessa: John Lindon, George E. Tranter, David Koppenaal(toim.) , 2016. The Encyclopedia of Spectroscopy and Spectrometry, 3rd edition. s. 439-443. Elsevier -
Terahertz study on porosity and mass fraction of active pharmaceutical ingredient of pharmaceutical tablets
Bawuah Prince, Tan Nicholas, Tweneboah Samuel Nana A., Ervasti Tuomas, Zeitler J Axel, Ketolainen Jarkko, Peiponen Kai-Erik. 2016. European journal of pharmaceutics and biopharmaceutics. 105: 122-133 -
Terahertz time-domain study on selected parameters of pharmaceutical tablets using effective medium approximations
Prince Bawuah, Mousumi Chakraborty, Tuomas Ervasti, J. Axel Zeitler, Jarkko Ketolainen, Kai-Erik Peiponen. 2016. Tampere university of technology -
A Quantitative study on the change of the effective refractive index of pharmaceutical tablets using terahertz-time-domain spectroscopy
Bawuah Prince, Ervasti Tuomas, Tan Nicholas, Ketolainen Jarkko, Zeitler J Axel, Peiponen Kai-Erik. 2015. UEF -
DETECTION OF ORIGINAL AND FAKE ANTIMALARIALS BY THZ RADIATION
Bawuah Prince, Kissi Eric Ofosu, Tan Nicholas, Zeitler J. Axel, Peiponen Kai-Erik. 2015. UEF/Department of Physics and Mathematics -
Estimation of Young's modulus of pharmaceutical tablet obtained by terahertz time-delay measurement
Peiponen Kai-Erik, Bawuah Prince, Chakraborty Mousumi, Juuti Mikko, Zeitler J Axel, Ketolainen Jarkko. 2015. International journal of pharmaceutics. 489: 100-105 -
Inverse Abbe-method for observing small refractive index changes in liquids
Räty Jukka, Peiponen Kai-Erik. 2015. Talanta. 137: 143-147 -
A Tape Method for Fast Characterization and Identification of Active Pharmaceutical Ingredients in the 2-18 THz Spectral Range
Kissi Eric Ofosu, Bawuah Prince, Silfsten Pertti, Peiponen Kai-Erik. 2014. Journal of infrared, millimeter, and terahertz waves. Epub: - -
Detection of porosity of pharmaceutical compacts by terahertz radiation transmission and light reflection measurement techniques
Bawuah Prince, Pierotic Mendia Alessandra, Silfsten Pertti, Pääkkönen Pertti, Ervasti Tuomas, Ketolainen Jarkko, Zeitler J. Axel, Peiponen Kai-Erik. 2014. International journal of pharmaceutics. Volume 465: 70-76 -
Far Infrared (THz) Absorption Spectra for the Quantitative Differentiation of Calcium Carbonate Crystal Structures: Exemplified in Mixtures and in Paper Coatings
Bawuah Prince, Kiss Marton Zsolt, Silfsten Pertti, Tag Carl-Mikael, Gane Patrick A C, Peiponen Kai-Erik. 2014. Optical review. 21: 373-377 -
Near-Infrared Imaging Method for Measuring the Thickness of Water-Dilutable Turbid Layers
Hirvonen Tapani, Penttinen Niko, Hauta-Kasari Markku, Sorjonen Mika, Peiponen Kai-Erik. 2014. Journal of imaging science and technology. 58: 105031-105034 -
Non-contact weight measurement of flat-faced pharmaceutical tablets using terahertz transmission pulse delay measurements
Bawuah Prince, Silfsten Pertti, Ervasti Tuomas, Ketolainen Jarkko, Zeitler J. Axel, Peiponen Kai-Erik. 2014. International journal of pharmaceutics. 276: 16-22 -
Optical multi-sensor for simultaneous measurement of absorbance, turbidity, and fluorescence of a liquid
Rissanen Reetaleena, Niskanen Ilpo, Räty Jukka, Kyyrönen Pirjo, Leinonen Asta, Myllylä Risto, Peiponen Kai-Erik. 2014. Optical review. 21: 395-400 -
Spectral image database for observing the quality of Nordic sawn timbers
Hirvonen Tapani, Orava Joni, Penttinen Niko, Luostarinen Katri, Hauta-Kasari Markku, Sorjonen Mika, Peiponen Kai-Erik. 2014. Wood science and technology. 48: 995-1003 -
Towards a Noninvasive Detection of the Porosity, Absolute Weight and Height of Pharmaceutical Compacts Using a Training Set of Tablets and THz Pulse Delay
P. Bawuah, P. Silfsten, T. Ervasti, J. Ketolainen, A. Zeitler, K-E. Peiponen. 2014. -
A Wide Spectral Range Reflectance and Luminescence Imaging System
Hirvonen Tapani, Penttinen Niko, Hauta-Kasari Markku, Sorjonen Mika ja Peiponen Kai-Erik. 2013. Sensors. 13: 14500-14510 -
Broadening of a THz pulse as a measure of the porosity of pharmaceutical tablets
Peiponen K-E, Silfsten P, Pajander J, Ketolainen J. 2013. International journal of pharmaceutics. 447: 7-11 -
Determination of the refractive index of microparticles by utilizing light dispersion properties of the particle and an immersion liquid
Niskanen I, Räty J, Peiponen K-E. 2013. Talanta. 115: 68-73 -
Dispersion relations for evaluating the complex refractive index of medium without the information of its thickness
Peiponen Kai-Erik, Vartiainen Erik M, Unuma Takeya, Zeitler J. Axel, Silfsten Pertti, Venäläinen Tapani, Kishida Hideo. 2013. Applied physics letters. 102: 18110-5 -
Evaluation of the complex refractive index of TiO2 nanoparticles in terahertz range without the information of sample thickness
Vartiainen Erik M, Bawuah Prince, Silfsten Pertti, Sarkar Anjan, Kordas Krisztian, Mikkola Jyri-Pekka, Peiponen Kai-Erik. 2013. -
Far infrared absorption spectra for the quantitative differentiation of calcium carbonate crystal structures: exemplified in mixtures and in paper coatings
Bawuah Prince, Silfsten Pertti, Tåg Carl-Mikael, Gane Patrik A. C.,Peiponen Kai-Erik. 2013. -
On the complex refractive index of N-doped TiO2 nanospheres and nanowires in the terahertz spectral region
Bawuah Prince, Silfsten Pertti, Sarkar Anjana, Kordas Krisztian, Mikkola Jyri-Pekka, Peiponen Kai-Erik. 2013. Vibrational spectroscopy. 68: 241-245 -
Optical and terahertz spectra analysis by the maximum entropy method
Vartiainen Erik M, Peiponen Kai-Erik. 2013. Reports on progress in physics. 76: - -
Terahertz Spectroscopy and Imaging
Peiponen Kai-Erik, Zeitler Axel, Kuwata-Gonokami Makoto. 2013. Springer series in optical sciences. 171. Springer -
Use of light dispersion for monitoring particle purity
Räty Jukka, Niskanen Ilpo, Peiponen Kai-Erik. 2013. Sensors and actuators b: chemical. 188: 1183-1186 -
Visible polarimetry of prints
Savenkov S, Priezzhev A, Oberemok Y, Kolomiets I, Silfsten P, Pääkkönen P, Tag CM, Gane P. A. C, Peiponen K-E. 2013. -
A study on the resolution of a terahertz spectrometer for the assessment of the porosity of pharmaceutical tablets
Ervasti Tuomas, Silfsten Pertti, Ketolainen Jarkko, Peiponen Kai-Erik. 2012. Applied spectroscopy. 66: 319-323 -
Assessment of wavelength dependent complex refractive index of strongly light absorbing liquids
Räty Jukka, Pääkkönen Pertti, Peiponen Kai-Erik. 2012. Optics express. 20: 2835 - 2843 -
Characterization of porous media by means of the depolarization metrics
Savenkov S, Piezzhev A, Oberemok Ye, Silfsten P, Ervasti T, Ketolainen J, Peiponen K-E. 2012. Journal of quantitative spectroscopy and radiative transfer. 113: 2503-2511 -
Detection of the effective refractive index of thermally modified Scots pine by immersion liquid method
Niskanen Ilpo, Heikkinen Jorma, Mikkonen Jukka, Harju Anni, Herajärvi Henrik, Venäläinen Martti, Peiponen Kai-Erik. 2012. Journal of wood science. 58: 46-50 -
Isolating contributions to gloss from surface mechanical and optical roughness, thin layer refractive index and wavelength filtering as a function of illumination and geometry of incidence
Gane Patrick, Silfsten Pertti, Tåg Carl-Mikael, Pääkkönen Pertti, Hiltunen Jouni, Kuivalainen Kalle, Oksman Antti, Peiponen Kai-Erik. 2012. Journal of print and media technology research. 2: 81 - 95 -
Optical sensor for nanoparticle identification in liquids
Saarinen JJ, Uozumi J, Vartiainen EM, Peiponen K-E. Teoksessa: -(toim.) , 2012. Proceedings of AICHE 2012 Annual Meeting. s. -. -
Phase retrieval of reflectance for nanoparticle optical identification
Saarinen Jarkko J, Uozumi Jun, Vartiainen Erik M, Peiponen Kai-Erik. 2012. Optics letters. 37: 2202-2204 -
Roughened Glass Slides and a Spectrophotometer for the Detection of the Wavelength-Dependent Refractive Index of Transparent Liquids
Niskanen Ilpo, Räty Jukka, Myllylä Risto, Sutinen Veijo, Matsuda Kiyofumi, Homma Kazuhiro, Silfsten Pertti, Peiponen Kai-Erik. 2012. Applied spectroscopy. 66: 786 - 790 -
Surface roughness and gloss study of prints: application of specular reflection at near infrared
Silfsten P, Dutta R, Pääkkönen P, Tåg C-M, Gane P A C, Peiponen K-E. 2012. Measurement science and technology. 23: 125202-1 -8 -
Causality-based method for determining the time origin in terahertz emission spectroscopy
UnumaTakeya, Ino Yusuke, Peiponen Kai-Erik, Vartiainen Erik M., Kuwata-Gonokami Makoto, Hirakawa Kazuhiko. 2011. Optics express. 19: 12759-12765 -
Diffractive optical element-based glossmeter for the on-line measurement of normal reflectance on a printed porous coated paper
Oksman Antti, Kuivalainen Kalle, Tåg Carl-Mikael, Juuti Mikko, Mattila Rauno, Hietala Eero, Gane Patrick, Peiponen Kai-Erik. 2011. Optical engineering. 50: 043606-1 - 043606-9 -
Finite Frequency f-sum Rule for Assessment of Number Density of Gold Nanoparticles (AuNPs) and Kramers-Kronig Relation for Refractive Index of Colloidal Gold
Kontturi Ville, Silfsten Pertti, Peiponen Kai-Erik. 2011. Applied spectroscopy. 65: 746-749 -
Kramers-Kronig analysis on the real refractive index of porous media in the terahertz spectral range
Silfsten Pertti, Kontturi Ville, Ervasti Tuomas, Ketolainen Jarkko, Peiponen Kai-Erik. 2011. Optics letters. 36: 778-780 -
Light Transmission Model for Determination of the Refractive Index of Solid Particles in Suspensions: An Immersion Study
Räty Jukka, Niskanen Ilpo, Myllylä Risto, Peiponen Kai-Erik. 2011. Applied spectroscopy. 65: 557-560 -
Liquid immersion method: refractive index of solid particles
Räty J, Niskanen I, Peiponen K-E. 2011. -
Mueller polarimetry of porous media
Savenkov S, Priezzhev A, Oberemok Ye, Silfsten P, Ervasti T, Ketolainen J, Peiponen K-E. 2011. -
Nanoparticle identification from a liquid matrix using the maximum entropy method for SPR reflectance
Saarinen J, Vartiainen E, Peiponen K-E. 2011. -
On Optical Properties of Dilute Colloidal Gold
Kontturi Ville, Silfsten Pertti, Räty Jukka, Peiponen Kai-Erik. 2011. Plasmonics. 6: 345-349 -
Optical properties of suspensions of organic and inorganic red pigments
Heuer J, Niskanen I, Klein S, Peiponen K-E. 2011. Applied spectroscopy. 65: 1181-1186 -
Simultaneous detection of the absorption spectrum and refractive index ratio with a spectrophotometer: monitoring contaminants in bioethanol
Kontturi V, Hyvärinen S, Garcia A, Carmona R, Murzin D. Yu, Mikkola J.-P., Peiponen K.-E.. 2011. Measurement science and technology. 22: 055803 1-6 -
Surface plasmon resonance- applications in nanoparticle detection from a liquid matrix using the maximum entropy method
Saarinen J, Vartiainen E, Peiponen K-E. Teoksessa: Kristina N. Helsey(toim.) , 2011. Plasmons: Theory and Applications. s. 247-265. Nova science publishers -
A method for the detection of the refractive index of irregular shape solid pigments in light absorbing liquid matrix
Ilpo Niskanen, Jukka Räty and Kai-Erik Peiponen. 2010. Talanta. 81: 1322-1324 -
Advanced Glossmeters for Industrial Applications
Kuivalainen Kalle, Oksman Antti, Juuti Mikko, Myller Kari ja Kai-Erik Peiponen. 2010. Optical review. 17: 248¿251 -
Advanced glossmeters for product testing
Kuivalainen Kalle, Oksman Antti, Kai-Erik Peiponen. 2010. -
Assessment of Refractive Index of Pigments by Gaussian Fitting of Light Backscattering Data in Context of the Liquid Immersion Method
Ilpo Niskanen, Kai-Erik Peiponen, and Jukka Räty. 2010. Applied spectroscopy. 64: 558-561 -
Definition and measurement of statistical gloss parameters from curved objects
Kuivalainen Kalle, Oksman Antti ja Kai-Erik Peiponen. 2010. Applied optics. 49: 5081-5086 -
Determination of the time origin by 
 the maximum entropy method in 
 time-domain terahertz emission spectroscopy
Takeya Unuma, Yusuke Ino, Makoto Kuwata-Gonokami, Erik M. Vartiainen, Kai-Erik Peiponen, and Kazuhiko Hirakawa. 2010. Optics express. 18: 15853-15858 -
Fresnel reflectance in refractive index estimation of light scattering solid particles in immersion liquid
J. Räty, I. Niskanen, and K.-E. Peiponen. 2010. Applied physics letters. 96: 231112-1 - 3 -
Measurement of the refractive index of highly turbid media: comment
K.- E. Peiponen, J. Räty, and I. Niskanen. 2010. Optics letters. 35: 4108-4108 -
Optical sensing of concentration and refractive index of pigments in a suspension
Ilpo Niskanen, Jukka Räty, and Kai-Erik Peiponen. 2010. Applied optics. 49: 3428-3433 -
Terahertz spectroscopy applied to the analysis of artists' materials
Fukunaga Kaori. 2010. Applied physics a-materials science and processing. 100: 591-597 -
Using modified Kramers-Kronig relations to test transmission spectra of porous media in THz-TDS
Tuononen H, Gornov E, Zeitler JA, Aaltonen J & Peiponen K-E. 2010. Optics letters. 35: 631-633 -
Wiener bounds for complex permittivity in terahertz spectroscopy: case study of two-phase pharmaceutical tablets
Tuononen H, Fukunaga K, Kuosmanen M, Ketolainen J & Peiponen K-E. 2010. Applied spectroscopy. 64: 127-131 -
Application of a diffractive element-based sensor for detection of latent fingerprints from a curved smooth surface
Kalle Kuivalainen, Kai-Erik Peiponen and Kari Myller. 2009. Measurement science and technology. 20: 077002-1 -3 -
Color analysis of multifunction spectrometer for optical inspection of red wine
Jarkko Mutanen, Ilpo Niskanen, Pekka Lehtonen, Jukka Räty, Kai-Erik Peiponen and Timo Jääskeläinen. Teoksessa: Y. Ishii, T. Yatagai, J. Uozumi and K-E Peiponen(toim.) , 2009. Technical Digest of the Eighth Japan-Finland Joint Symposium on Optics OIE¿09. Tokyo, Japan, Sept. 3 - 5. s. 125-126. -
Comparison of dynamic print gloss measurement techniques
Koivula Hanna, Juuti Mikko, Bousfield Douglas, Preston Janet, Silvennoinen Raimo, Peiponen Kai-Erik and Toivakka Martti. 2009. Tappi Journal. -: 19-28 -
Digital Holographic Microscopy Using a Single Mode Fiber
K. Matsuda, S. Rehman, H. Oohashi, I. Niskanen, M. Yamauchi, T. Nakatani, K. Homma and K. Peiponen. Teoksessa: Y. Ishii, T. Yatagai, J. Uozumi and K-E Peiponen(toim.) , 2009. Technical Digest of the Eighth Japan-Finland Joint Symposium on Optics in Engineering. Tokyo, Japan, Sept. 3 - 5. s. 17-18. -
Dispersion theory and sum rules for the non-minimum phase problem in optical spectroscopy
Kai-Erik Peiponen. 2009. Physica b: condensed matter. 404: 2094-2096 -
Generalized Kramers¿Kronig relations in nonlinear optical- and THz-spectroscopy
K-E Peiponen and J J Saarinen. 2009. Reports on progress in physics. 72: 056401-1 -19 -
Light scattering study from nanoparticle-coated pigments of paper
Mikko Juuti, Kimmo Koivunen, Martti Silvennoinen, Hannu Paulapuro and Kai-Erik Peiponen. 2009. Colloids and surfaces a: physicochemical and engineering aspects. 352: 94-98 -
Measurement of refractive index and concentration of pigments by using immersion method
Ilpo Niskanen, Jukka Räty and Kai-Erik Peiponen. Teoksessa: Y. Ishii, T. Yatagai, J. Uozumi and K-E Peiponen(toim.) , 2009. Technical Digest of the Eighth Japan-Finland Joint Symposium on Optics in Engineering OIE¿09. Tokyo, Japan, Sept. 3 - 5. s. 49-50. -
Modern glossmeters
Kalle Kuivalainen, Antti Oksman, Mikko Juuti, Kari Myller and K-E Peiponen. Teoksessa: Y. Ishii, T. Yatagai, J. Uozumi and K-E Peiponen(toim.) , 2009. Technical Digest of the Eighth Japan-Finland Joint Symposium on Optics in Engineering OIE¿09. Tokyo, Japan, Sept. 3 - 5. s. 7-8. -
Novel nanostructured PCC fillers
Kimmo Koivunen, Ilpo Niskanen, Kai-Erik Peiponen and Hannu Paulapuro. 2009. Journal of Materials Science. 44: 477-482 -
Optical Measurement Techniques
Kai-Erik Peiponen, Risto Myllylä, Alexander V. Priezzhev. 2009. . . Springer -
Optical and terahertz measurement techniques for flat-faced pharmaceutical tablets: a case study of gloss, surface roughness and bulk properties of starch acetate tablets
Juuti M, Tuononen H, Prykari T, Kontturi V, Kuosmanen M, Alarousu E, Ketolainen J, Myllyla R, Peiponen KE. 2009. Measurement science and technology. 20: Article Number: 015301 -
Optical sensor for inspection of color, turbidity and refractive index spectra of red wine
Niskanen I., Mutanen J., Lehtonen P., Räty J., Peiponen K-E and Jääskeläinen T. Teoksessa: (toim.) , 2009. Proceedings of OIV, the 7th General Assembly of the International Organisation of Vine and Wine Conference. Zagreb, Croatia, June 28 - July 3. s. -. -
Robust sensor for turbidity measurement from light scattering and absorbing liquids
Kontturi V, Turunen P, Uozumi J, Peiponen KE. 2009. Optics letters. 34: 3743-3745 -
Spectral properties and surface uniformity of black glass gloss references
Mikko Juuti, Heikki Tuononen, Antti Penttilä, Kari Myller, Kari Lumme and Kai-Erik Peipponen. 2009. Optical engineering. 48: 033603-1 -5 -
Surface plasmon resonance reflectance from nanoparticles in a liquid matrix: Retrieval of the optical properties using the maximum entropy model
Jarkko J. Saarinen, Erik M. Vartiainen, Kai-Erik Peiponen. 2009. Sensors and actuators b: chemical. 138: 383-395 -
A diffractive glossmeter for local gloss measurements of papers and prints
M. Juuti;H. Koivula;M. Toivakka and K.-E. Peiponen. 2008. Tappi Journal. 7: 27-32 -
Diffractive glossmeter for measurement of dynamic gloss of prints
Raimo Silvennoinen;Mikko Juuti;Hanna Koivula;Martti Toivakka and Kai-Erik Peiponen. 2008. TAGA Journal. 4: 59-71 -
Estimation of effective refractive index of birefringent particles using a combination of the immersion liquid method and light scattering
Ilpo Niskanen;Jukka Räty and Kai-Erik Peiponen. 2008. Applied spectroscopy. 62: 399-401 -
Inspection of print quality using a visibility map obtained by a diffractive optical element based glossmeter
Antti Oksman;Mikko Juuti;Kai-Erik Peiponen. Teoksessa: (toim.) , 2008. The 2nd International Topical Meeting on Optical Sensing and Artical Vision(Osav'08): Summaries. Saint Petersburg, Russia, May 12-15. s. 37-38. Itmo State University -
Materials cohesion and interaction forces
Jarl B. Rosenholm;Kai-Erik Peiponen and Evgeny Gornov. 2008. Advances in Colloid and Interface Science. 141: 48-65 -
Multifunction spectrometer for optical inspection of red wine
Niskanen, Ilpo; Mutanen, Jarkko; Lehtonen, Pekka; Räty, Jukka; Yamaguchi, Masahiro; Peiponen, Kai-Erik; Jaaskelainen, Timo. 2008. Sensing and Instrumentation for Food Quality and Safety. 2: 58-65 -
On estimation of complex refractive index and colour of dry black and cyan offset inks by a multi-function spectrophotometer
K-E Peiponen;V Kontturi;I Niskanen;M Juuti;J Räty;H Koivula and M Toivakka. 2008. Measurement science and technology. 19: 115601-115606 -
Print mottling: Solidliquid adhesion related to optical appearance
C.-M. Tåg;M. Juuti;K.-E. Peiponen and J.B. Rosenholm. 2008. Colloids and surfaces a: physicochemical and engineering aspects. 317: 658-665 -
Sensor for the detection of local contrast gloss of products
Antti Oksman;Mikko Juuti;Kai-Erik Peiponen. 2008. Optics letters. 33: 654-656 -
Statistical parameters and analysis of local contrast gloss
Antti Oksman;Mikko Juuti;Kai-Erik Peiponen. 2008. Optics express. 16: 12415-12422 -
A diffractive glossmeter for local gloss measurements of papers and prints
M. Juuti;H. Koivula;M. Toivakka and K.-E. Peiponen. Teoksessa: (toim.) , 2007. Proceedings of TAPPI Coating and Graphics Arts Conference 2007. Miami, Florida, USA. April 22 - 25. s. . -
A glossmeter for inspection of surface quality of low gloss nano-carbon surfaces
Juuti Mikko, Peiponen K-E, Obraztsov A N, Silvennoinen R, Myller K. 2007. Optical Materials. 29: 1719-1722 -
A novel method to measure and analyse delta gloss by diffractive glossmeter
Mikko Juuti;Valtteri Kalima;Tuula T Pakkanen and Kai-Erik Peiponen. 2007. Measurement science and technology. 18: L5-L8 -
An utilization of a diffractive optical element based machine vision system in local optical inspection of compressed paper
A. Oksman;R. Silvennoinen;and K.-E. Peiponen. Teoksessa: Mikhail Kirilin;Alexey Popov;Matti Kinnunen (Eds.)(toim.) , 2007. Book of Abstracts of the International Conference of Advanced Laser Technologies ALT' 07. s. 150. Oulu University Press -
Assessment of the complex refractive index of an optically very dense solid layer: Case study offset magenta ink
Ilpo Niskanen;Jukka Räty;Kai-Erik Peiponen;Hanna Koivula;Martti Toivakka. 2007. Chemical Physics Letters. 442: 515-517 -
Comparison of dynamic print gloss measurement techniques
H. Koivula;M. Juuti;D. Bousfield;J. Preston;R. Silvennoinen;K.-E. Peiponen;M. Toivakka. Teoksessa: (toim.) , 2007. Proceedings of TAPPI Coating and Graphics Arts Conference 2007. Miami, Florida, USA. April 22 - 25. s. . -
Complex refractive index of turbid liquids
Ilpo Niskanen;Jukka Räty;Kai-Erik Peiponen. 2007. Optics letters. 32: 862-864 -
Dependence of optical properties of coated papers on its three-dimensional structure
M. Myllys;T. Turpeinen;M. Juuti;A. Lähteelä;T. Ylimäki;K.-E. Peiponen and J. Timonen. Teoksessa: (toim.) , 2007. Proceedings of Physics Days 2007. Tallinn, Estonia. March 15 - 17. s. . -
Detection of gloss and colour mottling of prints
Mikko Juuti;Martti O.A. Mäkinen;Jouni Hiltunen and Kai-Erik Peiponen. Teoksessa: K.-E. Peiponen;R. Hernberg and T. Yatagai (eds.)(toim.) , 2007. Technical Digest of the Seventh Finnish-Japanese Joint Symposium on Optics in Engineering (OIE'07). Tampere, August 8 - 10. s. 91-92. -
Detection of local specular gloss and surface roughness from black prints
Mikko Juuti;Tuukka Prykäri;Erkki Alarousu;Hanna Koivula;Markko Myllys;Arto Lähteelä;Martti Toivakka;Jussi Timonen;Risto Myllylä;Kai-Erik Peiponen. 2007. Colloids and Surfaces A: Physicochem. Eng. Aspects. 299: 101-108 -
Dispersion relations for testing the validity of linear and nonlinear optical spectra
Evgeny Gornov;Kai-Erik Peiponen. 2007. Applied Optics. 46: 6081-6083 -
Fresnel drag of light by a moving nonlinear and nanostructured dielectric medium
Kai-Erik Peiponen and Evgeny Gornov. 2007. Physical review A : Atomic, molecular, and optical physics. 76: 064101-064103 -
Local gloss measurement of papers and prints
M. Juuti and K.-E. Peiponen. Teoksessa: (toim.) , 2007. Proceedings of COST action E32, Abstract 6. Grenoble, France. Oct. 4 - 5. s. . -
Measurement of Color, Refractive Index, and Turbidity of Red Wines
Jarkko Mutanen;Jukka Räty;Evgeny Gornov;Pekka Lehtonen;Kai-Erik Peiponen and Timo Jaaskelainen. 2007. American Journal of Enology and Viticulture. 58: 387-392 -
Measurement of refractive index of isotropic particles by incorporating a multifunction spectrophotometer and immersion liquid method
Ilpo Niskanen;Jukka Räty;Kai-Erik Peiponen. 2007. Applied Optics. 46: 5404-5407 -
On prediction of optical properties of two- and multiphase nanocomposites for nanomedicine
K.-E. Peiponen and E. Gornov. 2007. International Journal of Nanomedicine. 2: -
Optical inspection of red wine
Kai-Erik Peiponen;Jarkko Mutanen;Jukka Räty;Ilpo Niskanen;Evgeny Gornov;Pekka Lehtonen and Timo Jaaskelainen. Teoksessa: K.-E. Peiponen;R. Hernberg and T. Yatagai (eds.)(toim.) , 2007. Technical Digest of the Seventh Finnish-Japanese Joint Symposium on Optics in Engineering. Tampere, August 8 - 10. s. 97-98. -
Optical study of compressed paper
A. Oksman;R. Silvennoinen and K.-E. Peiponen. Teoksessa: (toim.) , 2007. Technical digest of the Seventh Finnish-Japanese Joint Symposium on Optics in Engineering, 8-10 August, Tampere, Finland. s. 95-96. -
Specular Gloss
Raimo Silvennoinen;Kai-Erik Peiponen and Kari Myller. 2007. . First edition 2008. Elsevier -
Statistical gloss analysis and novel parameters for characterising gloss variation
M. Juuti and K.-E. Peiponen. Teoksessa: (toim.) , 2007. Proceedings of Physics Days 2007. Tallinn, Estonia. March 15 - 17. s. . -
Visibility map for print quality assessment by means of a diffractive optical element based glossmeter
Antti Oksman;Mikko Juuti and Kai-Erik Peiponen. 2007. Measurement science and technology. 18: 2185-2188 -
A multifunction spectrophotometer for measurement of optical properties of transparent and turbid liquids
I. Niskanen;J. Räty and K.-E. Peiponen. 2006. Measurement science and technology. 17: N87-N91 -
Analysis on the surface quality of pharmaceutical tablets using a diffractive optical element based glossmeter
M. Juuti;B. van Veen;K.-E. Peiponen;J. Ketolainen;R. Silvennoinen. 2006. European Journal of Pharmaceutical Sciencies. 28: S16-S17 -
Comparison of subtractive Kramers-Kronig analysis and maximum entropy model in resolving phase from finite spectral range reflectance data
E. Gornov;E.M. Vartiainen;K.-E. Peiponen. 2006. Applied Optics. 45: 6519-6524 -
Description of Wiener bounds of multicomponent composites by barycentric coordinates
K.-E. Peiponen;E. Gornov. 2006. Optics letters. 31: 2202-2204 -
Diffractive-optical-element-based glossmeter and low coherence interferometer in assessment of local surface quality of paper
K-E. Peiponen;E. Alarousu;M. Juuti;R. Silvennoinen;A. Oksman;R. Myllylä;T. Prykäri. 2006. Optical engineering. 45: 043601-1 - 043601-7 -
Dispersion theory of the reflectivity of s-polarized and p-polarized light
K.-E. Peiponen;E.M. Vartiainen. 2006. Journal of the Optical Society of America B. 23: 114-119 -
Efficient dispersion relations for terahertz spectroscopy
E. Gornov;K.-E. Peiponen;Y. Svirko;Y. Ino and M. Kuwata-Gonokami. 2006. Applied physics letters. 89: 142903-1 - 142903-3 -
Local and average gloss from flat-faced sodium chloride tablets
M. Juuti;B. van Veen;K.-E. Peiponen;J. Ketolainen;V. Kalima;R. Silvennoinen and T.T. Pakkanen. 2006. AAPS PharmSciTech. 7: Article 7 -
Quality inspection of metal surfaces by diffractive optical glossmeter
K. Myller;M. Juuti;K.-E. Peiponen;R. Silvennoinen;E. Heikkinen. 2006. Precision Engineering. 30: 443-447 -
Retrieval of the effective complex refractive index of Bruggeman nanoliquids from surface plasmon resonance reflectance using the maximum entropy method
J.J. Saarinen;E.M. Vartiainen;K.-E. Peiponen. 2006. Journal of modern optics. 53: 1047-1059 -
Some remarks on the calculation of the complex refractive index of medium in terahertz reflection spectroscopy
E. Gornov;K.-E. Peiponen. 2006. Physica status solidi B : basic research. 244: 2619-2621 -
Statistical parameters for gloss evaluation
K.-E. Peiponen;M. Juuti. 2006. Applied physics letters. 88: 071104-1 - 071104-3 -
Surface quality measurements of high gloss planar, convex and concave metal surfaces using diffractive optical element-based glossmeter
K.Myller;M. Juuti;R.Silvennoinen;E. Heikkinen and K.-E. Peiponen. 2006. Tampere University of technology. Institute of Physics. Report 2006:1 -
A diffractive optical element based machine vision system for local optical inspection of compressed paper
A. Oksman;R. Silvennoinen;K.E. Peiponen;M. Avikainen and H. Komulainen. 2005. Opto: electronics review. 13: 39-42 -
A glossmeter for detection of local gloss of paper products
K.-E. Peiponen;M. Juuti and R. Silvennoinen. Teoksessa: J. Uozumi;T. Yatagai and K.-E.Peiponen(toim.) , 2005. Technical Digest of the Sixth Japan-Finland Joint Symposium on Optics in Engineering. s. 9-10. -
Detection and correction of the misplacement error in terahertz spectroscopy by application of singly subtractive Kramers-Kronig relations
V. Lucarini;Y. Ino;K.-E. Peiponen and M. Kuwata-Gonokami. 2005. Physical Review B. 72: 1251071-1251076 -
Diffraktiiviseen optiikkaan perustuva kiiltomittari ruiskuvaletun matkapuhelimen kuoren kiiltomittaukseen
K. Myller;R. Silvennoinen;K.-E. Peiponen;J. Salmi and E. J. Pääkkönen. 2005. Muovi-Plast. 3: 16-17 -
Gloss from flat-faced sodium chloride tablets
M.Juuti;B. van Veen;K.-E. Peiponen;J. Ketolainen;R. Silvennoinen. Teoksessa: Päivi Törmä;Jouko Korppi-Tommola;Viivi Lehtovuori(toim.) , 2005. Optics Days-Optiikan päivät Proceedings 2005, Jyväskylä 12.5.2005-13.5.2005. s. 32. -
Gloss inspection of nanocarbon surfaces
M. Juuti;K. -E. Peiponen;R. Silvennoinen;A. N. Obraztsov. Teoksessa: (toim.) , 2005. Proceedings of PALS 2005 2nd Photonics and Laser Symposium, Kajaani 23.2.2005-25.2.2005. s. 61. -
Korkeakiiltoisten metallipintojen kosketukseton kiiltomittaus
K. Myller;R. Silvenoinen;K.-E. Peiponen;M. Juuti and E. Heikkinen. 2005. Metallitekniikka. 5: 20-25 -
Kramers-Kronig Relations in Optical Materials Research
V. Lucarini;J. J. Saarinen;K.-E. Peiponen and E. M. Vartiainen. 2005. . . Springer -
Method for extracting the complex dielectric function of nanospheres in a water matrix from surface-plasmon-resonance data
E. M. Vartiainen;J. J. Saarinen and K.-E. Peiponen. 2005. Journal of the Optical Society of America B. 22: 1173-1178 -
Multiply subtractive Kramers-Kronig relations for impedance function of concrete
K.-E. Peiponen. 2005. Cement and Concrete Research. 35: 1435-1437 -
Optical and Digital Signal Processing in Inspection of Pharmaceutical Tablet Surfaces
M. Juuti;B. van Veen;K. -E. Peiponen;J. Ketolainen;R. Silvennoinen. Teoksessa: (toim.) , 2005. Proceedings of the 2005 Finnish Signal Processing Symposium (FINSIG '05), Kuopio 25.8.2005. s. 26 - 29. -
Quasistatic thermo-optical changes of acrylonitride-butadiene-styrene surface induced by laser beam
R. Silvennoinen;K. Myller;K.-E. Peiponen and P. Silfsten. 2005. Optics and Lasers In Engineering. 43: 682-685 -
Retrieval of the effective dielectric function of Bruggeman liquid using the maximum entropy method
E. M. Vartiainen;J. J. Saarinen;K.-E. Peiponen. Teoksessa: (toim.) , 2005. Optics Days-Optiikan päivät Proceedings 2005, 12.5.2005-13.5.2005, Jyväskylä. s. 67. -
Testing the validity of terahertz reflection spectra by dispersion relations
K.-E. Peiponen;E. Gornov;Y. Svirko;Y. Ino;M. Kuwata-Gonokami and V. Lucarini. 2005. Physical Review B. 72: 2451091-2451095 -
Derivation of General Dispersion Relations and Sum Rules for Meromorphic Nonlinear Optical Spectroscopy
Kai-Erik Peiponen;Jarkko J Saarinen;Yuri Svirko. 2004. Physical review A : Atomic, molecular, and optical physics. 69: 043818-1-043818-6 -
Diffractive optical sensor for gloss differences of injection molded plastic products
Raimo Silvennoinen;Kari Myller;Kai-Erik Peiponen;Jaakko Salmi and Esko J. Pääkkönen. 2004. Sensors and Actuators A. 112: 74-79 -
Glossmeter for detection of gloss and wear of concave glazed ceramic products
K. Myller;K.-E. Peiponen;R. Silvennoinen;J.-P. Tarvainen;J. Rainio;S. Soinila-Oksanen. 2004. Cfi: ceramic forum international. 81: E39-E42 -
Kiiltomittari kaarevien pintojen kiiltomittaukseen
K. Myller;R. Silvennoinen;K.-E. Peiponen;J.-P. Tarvainen;J. Rainio;S. Soinila-Oksanen. Teoksessa: (toim.) , 2004. Julkaisusarja A - Tampereen teknillinen yliopisto, Porin yksikkö. s. 231-235. Tampereen teknillinen yliopisto -
Kramers-Kronig Relations and Sum Rules in Nonlinear Optical Spectroscopy
Kai-Erik Peiponen;Valerio Lucarini;Jarkko J Saarinen;Erik M Vartiainen. 2004. Applied spectroscopy. 58: 499-509 -
Kramers-Kronig relations and sum rules of negative refractive index media
K.E. Peiponen;V. Lucarini;E. M. Vartiainen;J. J. Saarinen. 2004. The European Physical Journal B. 41: 61-65 -
Local gloss variation and surface roughness of paper detected by diffractive optical element based glossmeter and optical coherence tomography
K.-E. Peiponen;E. Alarousu;R. Silvennoinen;A. Oksman and R. Myllylä. 2004. -
Maximum entropy method for misplacement phase error correction in terahertz time-domain reflection spectroscopy
Yusuke Ino;Ryo Shimano;Makoto Kuwata-Gonokami;Erik M. Vartiainen;Yuri P. Svirko;Kai-Erik Peiponen. Teoksessa: (toim.) , 2004. 14th International Conference on Ultrafast Phenomena. s. ME4. -
Menetelmä ja laite paperin optisten pintaominaisuuksien määrittämiseksi laser-optisella anturilla. Method och apparat för at mäta optisk kvalitet av pappersyta med hjäp av laser optisk sensor
Raimo Silvennoinen ja Kai-Erik Peiponen. 2004. -
Numerical phase correction method for terahertz time-domain reflection spectroscopy
E.M. Vartiainen;Y. Ino;R. Shimano;M. Kuwata-Gonokami;Y. Svirko;K.-E. Peiponen. 2004. Journal of Applied Physics. 96: 4171-4175 -
Reflectance study of compressed paper
Antti Oksman;Raimo Silvennoinen;Kai-Erik Peiponen;Marko Avikainen and Hannu Komulainen. 2004. Applied spectroscopy. 58: 481-485 -
UV-visible Reflection Spectroscopy of Liquids
J. Räty;K.-E. Peiponen and T. Asakura. 2004. . 1. Springer -
Dispersion theory and sum rules in linear and nonlinear optics
V. LUcarini;F. Bassani;K.-E. Peiponen and J. J. Saarinen. 2003. Rivista del Nuovo Cimento. 26: 1-129 -
Extraction of optical constants of spherical nanoparticles in a liquid host material from a spectral surface plasmon resonance measurement
J.J. Saarinen;E.M. Vartiainen and K.-E. Peiponen. Teoksessa: H. Kopola and Y. Yatagai(toim.) , 2003. Fifth Finland-Japan joint symposium on Optics in Engineering, Technical Digest. s. . VTT -
Gloss inspection of metallic products by diffractive optical element based sensor
Kari Myller;Raimo Silvennoinen;Kai-Erik Peiponen. 2003. Opto: electronics review. 11: 53-56 -
Inspection of gloss by a glossmeter based on a diffractive optical element
K. Myller;R. Silvennoinen and K-E. Peiponen. Teoksessa: (toim.) , 2003. Fifth Finland-Japan Joint Symposium on ?Optics in Engineering ? OIE?03. s. . -
Modified Kramers-Kronig relations and sum rules for meromorphic total refractive index
K.-E. Peiponen;E. M. Vartiainen;J. J. Saarinen. 2003. Physical review A : Atomic, molecular, and optical physics. 68: 25802 -
Multiply subtractive generalized Kramers-Kronig relations: Application on third harmonic generation susceptibility on polysilane
V. Lucarini;J. J. Saarinen;K.-E. Peiponen. 2003. Journal of chemical physics. 119: 11095-11098 -
On tailoring of nonlinear spectral properties of nanocomposites having Maxwell Garnett or Bruggeman structure
J. J. Saarinen;E. M. Vartiainen;K.-E. Peiponen. 2003. Optical review. 10: 111-115 -
Retrieval of material parameters in terahertz time-domain reflection spectroscopy
E.M. Vartiainen;Y. Ino;R. Shimano;Yu. P. Svirko;M. Guwata-Gonokami and K.-E. Peiponen. Teoksessa: H. Kopola and Y. Yatagai(toim.) , 2003. Fifth Finland-Japan joint symposium on Optics in Engineering, Technical digest. s. . VTT -
Retrieval of the complex permittivity of spherical nanoparticles in a liquid host material from a spectral surface plasmon resonance measurement
J. J. Saarinen;E. M. Vartiainen;K.-E. Peiponen. 2003. Applied physics letters. 83: 893-895 -
Simulation on wavelength-dependent complex refractive index of liquids obtained by phase retrieval from reflectance dip due to surface plasmon resonance
J. J. Saarinen;K.-E. Peiponen;E. M. Vartiainen. 2003. Applied spectroscopy. 57: 288-292 -
Two-dimensional map of gloss of plastics measured by diffractive element based glossmeter
Kari Myller;Kai-Erik Peiponen and Raimo Silvennoinen. 2003. Optical engineering. 42: 3194-3197 -
Verification of generalized Kramers-Kronig relations and sum rules on experimental data of third harmonic generation susceptibility on polymer
V. Lucarini and K.-E. Peiponen. 2003. Journal of chemical physics. 119: 620-627 -
Optical sensing of colour print on paper by a diffractive optical element
Jari Palviainen;Mika Sorjonen;Raimo Silvennoinen and Kai-Erik Peiponen. 2002. Meas. Sci. Technol.. 13: N31-N37 -
Diffractive optical sensing of the surface quality of coated paper
Raimo Silvennoinen;Kai-Erik Peiponen;Mika Sorjonen;Jouni Tornberg and Juha Sumén. 2001. Paper and Timber. 83: 395-399 -
Diffractive optical element based sensor for surface quality inspection of concave punches
Ville Hyvärinen;Raimo Silvennoinen;Kai-Erik Peiponen and Tapani Niskanen. 2000. Eur. J. Pharm. Biopharm.. 49: 167-169 -
Dynamic laser speckle pattern in monitoring of local deformation of tablet surface after compression
Raimo Silvennoinen;Ville Hyvärinen;Pasi Raatikainen and Kai-Erik Peiponen. 2000. Int. J. Pharm.. 199: 205-208 -
On all-optical laser cleaning and inspection of contaminated concave metal surfaces
Ville Hyvärinen;Mika Sorjonen;Kai-Erik Peiponen;Raimo Silvennoinen;Tapani Niskanen and Juha Kalliokoski. 2000. Optics and Lasers In Engineering. 33: 311-315 -
On measurement of complex refractive index of liquids by diffractive element-based sensor
Anssi Jääskeläinen;Raimo Silvennoinen;Kai-Erik Peiponen and Jukka Räty. 2000. Opt. Commun.. 178: 53-57 -
On the assessment of the surface quality of black print paper by use of a diffractive optical-element-based sensor
M. Sorjonen;A. Jääskeläinen;K.-E. Peiponen and R. Silvennoinen. 2000. Meas. Sci. Technol.. 11: N85-N88 -
Optical Inspection of Punches: Flat Surfaces
Ville Hyvärinen;Kai-Erik Peiponen;Raimo Silvennoinen;Pasi Raatikainen;Petteri Paronen and Tapani Niskanen. 2000. Eur. J. Pharm. Biopharm.. 49: 87-90 -
Optical inspection of surface quality of pharmaceutical compacts, In: Gert von Bally Series Editor, Series of the International Society on Optics Within Life Sciences, Volume V, In: Fotakis C., Papazoglou T.G. and Kalpouzos (Eds.), Optics and Lasers in Biomedicine and Culture, pp. 273-276
K.-E. Peiponen;R. Silvennoinen;V. Hyvärinen;P. Raatikainen;P. Paronen. 2000. Optics and Lasers in Biomedicine and Culture. . Springer -
Detection of refractive index change of liquids by diffractive element based sensor
R. Silvennoinen;K.-E. Peiponen and J. Räty. 1999. Optical review. 6: 68-70 -
Diffractive optical elements in materials inspection: in Asakura T. (ed.) The International Trends in Optics and Photonics ICO IV , Part VI Optical Metrology (Optical Systems),pp.281-293
R. Silvennoinen;K.-E. Peiponen and T. Asakura. 1999. The International Trends in Optics and Photonics ICO IV. . Springer-Verlag -
Optical surface roughness study of starch acetate compacts
Raimo Silvennoinen;Kai-Erik Peiponen;Ville Hyvärinen;Pasi Raatikainen and Petteri Paronen. 1999. Int. J. Pharm.. 182: 213-220,