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Proteinaceous Bubbles and Nano Particle Flows in Microchannel

[+] Author Affiliations
Jung-Yeul Jung, Ki-Taek Byun, Ho-Young Kwak

Chung-Ang University, Seoul, Korea

Jae-Ho Hong

Ohsan College, Ohsan, Korea

Paper No. ICMM2004-2437, pp. 961-966; 6 pages
  • ASME 2004 2nd International Conference on Microchannels and Minichannels
  • ASME 2nd International Conference on Microchannels and Minichannels
  • Rochester, New York, USA, June 17–19, 2004
  • Conference Sponsors: Nanotechnology Institute
  • ISBN: 0-7918-4164-2
  • Copyright © 2004 by ASME


Proteinaceous bubbles of 185 nm in average diameter were synthesized by a sonochemical treatment of bovine serum albumin in aqueous solution and the nanoparticles (TiO2 ) solution was made by ultrasonic irradiation. To study the macroscopic flow behavior associated with the changes in the state of microparticles, a flow test of these solutions in microchannels was done. Also the size distributions of the proteinaceous bubbles in solution before and after the flow test were measured by a light scattering method. Test results show that the air-filled proteinaceous bubbles in solution adjust their size to reduce the shear stress encountered in the flow through the microchannel. On the other hand, the flow rate of the solution with nanoparticles suspensions becomes smaller than that of deionized water above the flow rate of 6 cm3 /min in the microchannel with a dimension of 100×150 μm2 .

Copyright © 2004 by ASME



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