A new approach for the formation of s-BLM and in situ evaluation

Guoming Chen; Yunlong Wei; Zhongwei Jiang; Yafang Luo

doi:10.1117/12.664333

20 February 2006 A new approach for the formation of s-BLM and in situ evaluation

Guoming Chen, Yunlong Wei, Zhongwei Jiang, Yafang Luo

Proceedings Volume 6041, ICMIT 2005: Information Systems and Signal Processing; 60411F (2006) https://doi.org/10.1117/12.664333
Event: ICMIT 2005: Merchatronics, MEMS, and Smart Materials, 2005, Chongqing, China

Abstract

A probe was made by squeezing a stainless steel wire (diameter 1mm) into a Teflon bar of diameter 6mm in order to get tightly cohesion between the two materials. The consistency of the probe tip surface was improved carefully by mechanical grinding and chemical activating. To avoid the influence of surface tension of the buffer solution, a new approach for forming s-BLM on the probe tip was proposed as follows. The probe and the lipid solution as well as the buffer solution were first sealed in a small chamber. Then the chamber was overturned slowly to allow the probe tip contacting the buffer solution to form s-BLM. Further, the formation of the s-BLM was measured by a cyclic voltammeter during the process. In contrast the chronoamperometry method was employed to test the voltage-current relationship versus time by adjusting the thickness of lipid solution layer, which is floating above the buffer solution. The equivalent resistances of the two mono-membranes formed on the probe tip and the lipid-buffer interface was calculated. It coincided well with the s-BLM resistance obtained by the cyclic voltammetry experiments. The proposed method shows a new way in s-BLM formation and in-situ evaluation.

Citation Download Citation

Guoming Chen, Yunlong Wei, Zhongwei Jiang, and Yafang Luo "A new approach for the formation of s-BLM and in situ evaluation", Proc. SPIE 6041, ICMIT 2005: Information Systems and Signal Processing, 60411F (20 February 2006); https://doi.org/10.1117/12.664333

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