Effect of Adsorption Stress-Induced Change in Neutral Layer Position on Static Behavior of Microcantilever Gas Sensor

摘要：

　　The static bending model of microcantilever with monolayer molecules has been established based on energy method,in which the change in neutral layer position caused by adsorption-induced stress is introduced.On this basis,we have analyzed the relationship between the bending curvature radius of a microcantilever with its thickness,Young’s modulus and molecule-molecule distance of adsorbed molecules when it is adsorbed with monolayer water molecules.Additionally,we have investigated the effect of change in neutral layer position on the static behavior of microcantilever sensors.The results show that 1)the bending curvature radius of microcantilever is the linear,quadratic and eight approximation function of its Young’s modulus,thickness and distance of adsorbed molecules,respectively; 2)the predicted error of bending curvature radius caused by the change in neutral layer position slightly increases with decreasing Young’s modulus and thickness,whereas the effect of distance between adsorbed molecules on the error is significant; 3)the change in neutral layer position can cause a significant effect on the sensitivity and surface strain of the microcantilever.

关键词： microcantilever adsorption static bending model neutral layer position

作者: Fei Wang Liang Zhao Yanling Zhang Dalei Jing

作者单位: School of Mechanical and Electronic Engineering, Harbin Institute of Technology,Harbin, 150001, China

会议类型: 国际会议

会议名称: 中国微米纳米技术学会第14届学术年会、第3届国际年会暨第6届微米纳米技术“创新与产业化国际研讨与展览会(CSMNT2012 & ICMAN2012)

会议地点: 杭州

会议语种:英文

页码: 1-8

在线出版日期: 2012-11-04（万方平台首次上网日期，不代表论文的发表时间）