Construction of a Low Cost Photoacoustic Spectrometer for Characterization of Materials

During the past few years, another optical technique has been developed to study those materials, which cannot be studied, by the conventional transmission or reflection techniques. The present technique called Photoacoustic spectroscopy or PAS is different from the conventional techniques chiefly i...

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Bibliographic Details
Published in:Macromolecular symposia. 2005-03, Vol.222 (1), p.287-296
Main Authors: Rajan, M.A. Jothi, Thaddeus, Arockiam, Mathavan, T., Vivekanandam, T.S., Umapathy, S.
Format: Article
Language:English
Subjects:
Construction costs
Gas sampling
Liquids
Low cost
low cost spectrometer
PAS
photoacoustic spectrometer
photoacoustics
Photons
Reflection
Spectrometers
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Summary:During the past few years, another optical technique has been developed to study those materials, which cannot be studied, by the conventional transmission or reflection techniques. The present technique called Photoacoustic spectroscopy or PAS is different from the conventional techniques chiefly in that the interaction of the incident energy of the photons with the materials under investigation is studied not through subsequent detection and analysis of some of the photons, but rather through a direct measure of the energy absorbed by the material. The aim of this presentation is to highlight the construction of a simple Photoacoustic spectrometer which can easily be constructed even in high school and college laboratories with the available low cost but efficient components and use it for characterization of solid (opaque or transparent), liquid and gas samples under investigations. The essential parts of the photoacoustic spectrometer designed in the laboratory (MADURAI – PA SPECTROMETER), consists of three main components.The total cost comes around 900 Euros. It is an affordable cost for researchers working with paucity of funds and facilities and many constraints especially in the developing countries. In the next few years we aim to study material characterization using MADURAI –PA SPECTROMETER.
ISSN:1022-1360
1521-3900
DOI:10.1002/masy.200550438