Formats for submission of projects

Summary of the project:
Gas-borne nanoparticulate systems find an important place in both environmental processes and in various technologies of commercial interest. The former comes under the purview of aerosol science, which involves the study of solid and liquid particles present in the atmosphere, and has implications in air pollution and climatic patterns. On the other hand, nanoparticles of carbon, iron, silica, titania and other metal oxides are synthesized in gas based processes (like chemical vapour deposition, flame and laser ablation reactors) for applications as reinforcing fillers, catalysts, pigments etc. Data on particle size distribution is fundamental to the understanding of the mechanism of formation and properties or new applications of these nanoparticles. The proposed Scanning Mobility Particle Sizing (SMPS) system furnishes this data.
SMPS has been utilized for obtaining particle size distribution data for both outdoor ambient aerosols and common household smoke particles in an enclosed, indoor environment. In the first case, patterns of diurnal and seasonal variations of nanoparticulates and black carbon in the environment has been analyzed and correlated successfully. On the other hand, in the second application area using SMPS; size distribution and chemical composition measurement of indoor aerosols has led us to identify the more harmful aerosols, among common household sources of smoke.
3. Investigator(s) Name & Institute: Rajdip Bandyopadhyaya

Chemical Engg. Dept.

Indian Institute of Technology Bombay
Project Title: General Strategies for Nanoparticles of Controlled Size, Shape and Composition: Magnetite as a Case Study for MRI Applications
Project Status: Finished

Duration: 3 years

Date of start: 7. 5. 2008

Funding agency: DST

Total cost: Rs. 38.94 lakhs