Thermal Diffusivity Measurement and Photobleaching Study Using Photoacoustic Technique and UV –Visible Fibre Optics Spectrometry

In recent years, the photoacoustic effects in solid materials, induced by the absorption of intensity-modulated laser radiation, were used as a versatile tool for optical and thermal characterization of a variety of samples. In our work, by using the photoacoustic detection technique, the measure...

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Main Author:	Chan, Kok Sheng
Format:	Thesis
Language:	English English
Published:	2002
Subjects:	Thermal diffusivity Optoacoustic spectroscopy
Online Access:	http://psasir.upm.edu.my/id/eprint/9508/1/FSAS_2002_35_A.pdf
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id	my-upm-ir.9508
record_format	uketd_dc
spelling	my-upm-ir.95082013-07-18T07:51:08Z Thermal Diffusivity Measurement and Photobleaching Study Using Photoacoustic Technique and UV –Visible Fibre Optics Spectrometry 2002-09 Chan, Kok Sheng In recent years, the photoacoustic effects in solid materials, induced by the absorption of intensity-modulated laser radiation, were used as a versatile tool for optical and thermal characterization of a variety of samples. In our work, by using the photoacoustic detection technique, the measurement was first carried out to obtain the thermal diffusivity values of commercial papers (i.e. white paper, drawing paper, filtering paper, wrapping paper, fax paper and press paper), sago starch, chitosan and the blends of sago starch with chitosan. All the measurements for these samples were carried out at room temperature. It was based upon the measurement of the photoacoustic signal as a function of the modulation frequency in the region where the thermal diffusion length equals to the sample thickness. Thermal diffusivity Optoacoustic spectroscopy 2002-09 Thesis http://psasir.upm.edu.my/id/eprint/9508/ http://psasir.upm.edu.my/id/eprint/9508/1/FSAS_2002_35_A.pdf application/pdf en public masters Universiti Putra Malaysia Thermal diffusivity Optoacoustic spectroscopy Faculty of Science and Environmental Studies English
institution	Universiti Putra Malaysia
collection	PSAS Institutional Repository
language	English English
topic	Thermal diffusivity Optoacoustic spectroscopy
spellingShingle	Thermal diffusivity Optoacoustic spectroscopy Chan, Kok Sheng Thermal Diffusivity Measurement and Photobleaching Study Using Photoacoustic Technique and UV –Visible Fibre Optics Spectrometry
description	In recent years, the photoacoustic effects in solid materials, induced by the absorption of intensity-modulated laser radiation, were used as a versatile tool for optical and thermal characterization of a variety of samples. In our work, by using the photoacoustic detection technique, the measurement was first carried out to obtain the thermal diffusivity values of commercial papers (i.e. white paper, drawing paper, filtering paper, wrapping paper, fax paper and press paper), sago starch, chitosan and the blends of sago starch with chitosan. All the measurements for these samples were carried out at room temperature. It was based upon the measurement of the photoacoustic signal as a function of the modulation frequency in the region where the thermal diffusion length equals to the sample thickness.
format	Thesis
qualification_level	Master's degree
author	Chan, Kok Sheng
author_facet	Chan, Kok Sheng
author_sort	Chan, Kok Sheng
title	Thermal Diffusivity Measurement and Photobleaching Study Using Photoacoustic Technique and UV –Visible Fibre Optics Spectrometry
title_short	Thermal Diffusivity Measurement and Photobleaching Study Using Photoacoustic Technique and UV –Visible Fibre Optics Spectrometry
title_full	Thermal Diffusivity Measurement and Photobleaching Study Using Photoacoustic Technique and UV –Visible Fibre Optics Spectrometry
title_fullStr	Thermal Diffusivity Measurement and Photobleaching Study Using Photoacoustic Technique and UV –Visible Fibre Optics Spectrometry
title_full_unstemmed	Thermal Diffusivity Measurement and Photobleaching Study Using Photoacoustic Technique and UV –Visible Fibre Optics Spectrometry
title_sort	thermal diffusivity measurement and photobleaching study using photoacoustic technique and uv –visible fibre optics spectrometry
granting_institution	Universiti Putra Malaysia
granting_department	Faculty of Science and Environmental Studies
publishDate	2002
url	http://psasir.upm.edu.my/id/eprint/9508/1/FSAS_2002_35_A.pdf
_version_	1747810969294209024

Thermal Diffusivity Measurement and Photobleaching Study Using Photoacoustic Technique and UV –Visible Fibre Optics Spectrometry

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