Electret sensors, filters and MEMS devices: New challenges in materials research
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CURRENT SCIENCE, VOL. 85, NO. 4, 25 AUGUST 2003 443The views expressed in this article are those of the author and not ne c-essarily those of the organization. The author is in the Department of Science and Technology, Techno -logy Bhawan, New Delhi 110 016, India e-mail: mlg@alpha.nic.in 25. Porous carbon to store methane. www. acdlabs.com/webzine/ 24/24_2.html 26. Dagani, R., Crystal sponges. Mater. Chem. , 2002, 80 , 8. 27. Gao Xian Sheng, Biomass domestic cooking gas ifier stove for use in rural areas of developing countries. Advances in Thermochem i-cal Biomass Conversion (ed. Bridgwater, A. V.), Blackie Aca-demic, 1994, vol. 1, pp. 310 –313. 28. Singh, N. P., Ethanol as a bio -fuel option, Pr oceedings of Ethanol 2002, International Conference on Policy, Financing and Market Development Issues, Winrock International India, New Delhi, 2002. 29. Chaudhari, A. S., Ethanol production from sugar beet. Ethanol , 2002, 6, 8–9. 30. Rajvanshi, A. K., Potential of Briquettes from Farm Residues as Rural Energy Source. Chan ging Villages , 1985, 7, 16. 31. Lakshmikanthan, V., Tree Borne Oilseeds, Directorate of Non-Edible Oils and Soap Industry, KVIC, Bombay, 1978, p. 59. 32. Wealth of India – Raw Materials, National Institute of Science, CSIR, New Delhi, 2000, vol. 1, pp. 107 –111. ACK NOWLEDGEMENTS. I thank Drs S. P. Sukhatme, C. R. Bhatia and J. Srinivasan for valuable comments and sugge stions. Received 3 March 2003; accepted 17 July 2003
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