Dr. Pentti Niemelä Profile

Dr. Pentti Niemelä

at VTT Technical Research Ctr of Finland Ltd

SPIE Involvement:

Author

Publications (6)

Proceedings Article | 3 June 2005 Paper

Dual-laser CCD-Raman spectrometer applied to on-line measurement of paper coating paste

Pentti Niemela, Juha Sumen, Janne Suhonen

Proceedings Volume 5826, (2005) https://doi.org/10.1117/12.623477

KEYWORDS: Spectroscopy, Raman spectroscopy, CCD cameras, Coating, Latex, Luminescence, Spectrographs, Carbonates, Sensors, Charge-coupled devices

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Proceedings Article | 17 November 2003 Paper

Raman investigation of minor component reaction during polymer synthesis process

Marcin Gnyba, Mikko Keränen, Janne Suhonen, Pentti Niemela, Robert Bogdanowicz, Malgorzata Jedrzejewska-Szczerska

Proceedings Volume 5258, (2003) https://doi.org/10.1117/12.546123

KEYWORDS: Raman spectroscopy, Epoxies, Polymers, Glasses, Sol-gels, Spectrometers, Electronics, Polymerization, CCD cameras, Raman scattering

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Proceedings Article | 1 April 2003 Paper

Raman scattering measurements in monitoring of polymer synthesis process

Marcin Gnyba, Mikko Keraenen, Janne Suhonen, Pentti Niemelae, Robert Bogdanowicz, Malgorzata Jedrzejewska-Szczerska

Proceedings Volume 5064, (2003) https://doi.org/10.1117/12.501399

KEYWORDS: Raman spectroscopy, Epoxies, Polymers, Raman scattering, Sol-gels, Glasses, Scatter measurement, Adhesives, Manufacturing, Process control

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Proceedings Article | 5 January 1993 Paper

Infrared analyzers for process measurements

Timo Hyvarinen, Jorma Lammasniemi, Jouko Malinen, Pentti Niemela, Jussi Tenhunen

Proceedings Volume 1762, (1993) https://doi.org/10.1117/12.138960

KEYWORDS: Sensors, Spectroscopy, Digital signal processing, FT-IR spectroscopy, Absorption, Infrared spectroscopy, Near infrared, Infrared technology, Calibration, Mirrors

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Proceedings Article | 1 August 1990 Paper

Miniaturized FT-IR spectrometer for industrial process measurements

Esko Herrala, Pentti Niemela, Tapio Hannula

Proceedings Volume 1266, (1990) https://doi.org/10.1117/12.20261

KEYWORDS: Spectroscopy, Mirrors, Sensors, Spectrometer engineering, Interferometers, Actuators, Moire patterns, Transducers, Beam splitters, FT-IR spectroscopy

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Proceedings Article | 1 August 1990 Paper

Rugged multiwavelength NIR and IR analyzers for industrial process measurements

Timo Hyvarinen, Pentti Niemela

Proceedings Volume 1266, (1990) https://doi.org/10.1117/12.20263

KEYWORDS: Sensors, Optical filters, Near infrared, Absorption, Lead, Signal detection, Temperature metrology, Process control, Optical testing, Analytical research

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Showing 5 of 6 publications

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