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Spatially Controllable Deposition of Electrospray Microparticles

[+] Author Affiliations
Xu Zhang, Yi Zhao

The Ohio State University, Columbus, OH

Paper No. IMECE2011-65383, pp. 955-961; 7 pages
  • ASME 2011 International Mechanical Engineering Congress and Exposition
  • Volume 2: Biomedical and Biotechnology Engineering; Nanoengineering for Medicine and Biology
  • Denver, Colorado, USA, November 11–17, 2011
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-5488-4
  • Copyright © 2011 by ASME


Electrospray has been widely used in micro/nanotechnology which deposit micro/nanoscale particles on planar surfaces. However, in conventional electrospray approach the distribution of these particles patterned on the collecting surface is poorly controlled. This work introduces a programmable patterning method of electrospray, which microparticles are sprayed on micropatterned collecting chips. By manipulating the local electrical field using a combination of activated and floating electrodes, a good spatial contrast of microparticle patterning is obtained. In addition, the size-dependent contrast enhancement is demonstrated using a series of electrode arrays with different electrode patterns. Combined with encapsulation technique, this unique electrospray method promises potential applications in the field of functional cell/tissue engineering.

Copyright © 2011 by ASME
Topics: Microparticles



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