1. Chemisorption-Induced Resonance Frequency Shift of a Microcantilever
- Author
-
Xi-Qiao Feng, Ji-Qiao Zhang, Gan-Yun Huang, and Shou-Wen Yu
- Subjects
Materials science ,Cantilever ,Resonance frequency shift ,General Physics and Astronomy ,chemistry.chemical_element ,Substrate (electronics) ,Oxygen ,Molecular physics ,Nuclear magnetic resonance ,Adsorption ,chemistry ,Chemisorption ,Bending stiffness ,Molecule - Abstract
The autonomy and property of atoms/molecules adsorbed on the surface of a microcantilever can be probed by measuring its resonance frequency shift due to adsorption. The resonance frequency change of a cantilever induced by chemisorption is theoretically studied. Oxygen chemisorbed on the Si(100) surface is taken as a representative example. We demonstrate that the resonant response of the cantilever is mainly determined by the chemisorption-induced bending stiffness variation, which depends on the bond configurations formed by the adsorbed atoms and substrate atoms. This study is helpful for optimal design of microcantilever-based sensors for various applications.
- Published
- 2012