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In-situ impedance spectroscopy of layer-by-layer self-assembly of polyelectrolytes

Prashanth, Gurusiddappa R and Murali, Pramod and Varma, Manoj M and Bhat, Navakanta (2012) In-situ impedance spectroscopy of layer-by-layer self-assembly of polyelectrolytes. In: 2012 International Conference on Emerging Electronics (ICEE), 15-17 Dec. 2012, Mumbai.

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Official URL: http://dx.doi.org/10.1109/ICEmElec.2012.6636250

Abstract

In-situ impedance spectroscopy of layer-by-layer self-assembly of weak polyelectrolytes is presented. Interdigitated capacitors with active area of 1×1 mm2 and electrode spacing of 5 μm are fabricated and used for this purpose. Measurement results indicate that the impedance decreases with increase in number of polyelectrolyte layers. About 2.5% of relative change in magnitude of impedance at 104.7 KHz is seen for four bi-layers of Poly(Allylamine Hydrochloride) (PAH)/Poly(Acrylic acid) (PAA). An electrical equivalent for polyelectrolyte binding is obtained.

Item Type: Conference Paper
Additional Information: Copyright of this article belongs to IEEE.
Department/Centre: Division of Electrical Sciences > Electrical Communication Engineering
Depositing User: Francis Jayakanth
Date Deposited: 02 Dec 2013 10:40
Last Modified: 02 Dec 2013 10:40
URI: http://eprints.iisc.ac.in/id/eprint/47872

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