Flow-Induced Transverse Electrical Potential across an Assembly of Gold Nanoparticles

Phys. Rev. Lett. 95, 164501 – Published 10 October 2005
Chandramouli Subramaniam, T. Pradeep, and J. Chakrabarti


We report the generation of a potential difference, of the order of tens of millivolts, induced by the flow of polar liquids over an assembly of gold nanoparticles. The device consisted of two conducting glass plates, one of which contained the gold nanoparticle multilayer assembly. The potential generated is in transverse direction to the flow and is dependent on the nature of the flowing liquid. We propose a simple theoretical model to account qualitatively for the generation of the flow-induced transverse potential.

DOI: http://dx.doi.org/10.1103/PhysRevLett.95.164501

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  • Received 9 February 2005
  • Published 10 October 2005

© 2005 The American Physical Society

Authors & Affiliations

Chandramouli Subramaniam and T. Pradeep*

  • Unit on Nanoscience and Technology (UNANST-DST), Department of Chemistry and Sophisticated Analytical Instrument Facility, Indian Institute of Technology Madras, Chennai 600036, India

J. Chakrabarti

  • S. N. Bose National Centre for Basic Sciences, Block JD, Sector III, Salt Lake, Kolkata 700091, India

  • *Electronic address: pradeep@iitm.ac.in
  • Electronic address: jaydeb@bose.res.in

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