In-Situ Impedance Spectroscopy of Layer-by-Layer Self-Assembly of Polyelectrolytes

被引：0
|
作者：
Prashanth, Gurusiddappa R. [1 ]
Murali, Pramod [1 ]
Varma, Manoj M. [1 ]
Bhat, Navakanta [1 ]
机构：
[1] Indian Inst Sci, Ctr Nano Sci & Engn, Bangalore 560012, Karnataka, India
来源：
2012 INTERNATIONAL CONFERENCE ON EMERGING ELECTRONICS (ICEE) | 2012年
关键词：
LABEL-FREE;
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中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In-situ impedance spectroscopy of layer-by-layer self-assembly of weak polyelectrolytes is presented. Interdigitated capacitors with active area of 1 x 1 mm(2) and electrode spacing of 5 Mm 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.
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页数：4
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