A NANOMECHANICAL DEVICE BASED ON LIGHT-DRIVEN PROTON PUMPS

作     者：Ren Quan Zhao Yapu (Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080, China) 

会议名称：《中国力学学会学术大会'2005》

会议日期：2005年

学科分类：080704[工学-流体机械及工程] 08[工学] 0807[工学-动力工程及工程热物理] 

关 键 词：bacteriorhodopsin microcantilever deflection surface stress proton transport 

摘      要：Bacteriohodopsin (bR), imbedded in purple membrane (PM) isolated from Halobactrerium salimarum, functions as a light-driven proton pump is capable of translocation of protons across the membrane in cell, thereby generates a substantial electrochemical gradient in presence of visible light. With labeled by biotin, the high oriented PM film can be self-assembled on the microcantilever surface to construct a hybrid device. Illuminated by visible light, the light-driven proton pump transports the proton from the solution toward the interface between microcantilever surface and PM, and the resulting gradient of proton induces the change of