How to measure the adsorbate-induces surface stress?
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To measure adsorbate-induced surface stress, various methods have been developed. One approach involves utilizing ultrasonic measurements to determine the dependence of the adsorbate's longitudinal modulus on the adsorption-induced normal pressure in nanoporous materials, enabling the calculation of changes in surface stress at the solid-liquid interface . Another method involves using a surface stress sensor based on a MEMS FabryPerot interferometer integrated with a photodiode, which enhances sensitivity through nonlinear optical transmittance changes. This sensor utilizes a deformable membrane with low Young's modulus for significant deformation upon molecular adsorption, allowing for precise measurement of surface stress changes . These techniques provide valuable insights into understanding and quantifying adsorbate-induced surface stress in various materials.
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Open access•Journal Article | Surface stress induced by adsorbates can be measured using a MEMS Fabry-Perot interferometer integrated with a photodiode, detecting molecular adsorption-induced diaphragm deformation, as demonstrated in the study. |
| Measure adsorbate-induced surface stress by determining the adsorbate's longitudinal modulus dependence on normal pressure using ultrasonic measurements, enabling assessment of changes in surface stress in nanoporous materials. | |
15 Citations | Surface stress induced by adsorbates can be measured by analyzing resonant frequency shifts of a microcantilever, as demonstrated in the study through a new efficient method utilizing two resonant frequencies. |
| Surface stress induced by adsorbates can be measured by comparing surface stress versus potential curves with electrocapillary curves, as shown in single-crystal Au electrode experiments in the paper. | |
16 Oct 2014 1 Citations | The adsorbate-induced surface stress can be measured using a MEMS Fabry-Perot interferometer integrated with a photodiode, detecting a 50 nm diaphragm deformation after immobilization of anti-BSA. |
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