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- W2071193140 abstract "A method suitable for the calibration of the spring constants of all torsional and lateral eigenmodes of micro- and nanocantilever sensors is described. Such sensors enable nanomechanical measurements and the characterization of nanomaterials, for example with atomic force microscopy. The method presented involves the interaction of a flow of fluid from a microchannel with the cantilever beam. Forces imparted by the flow cause the cantilever to bend and induce a measurable change of the torsional and lateral resonance frequencies. From the frequency shifts the cantilever spring constants can be determined. The method does not involve physical contact between the cantilever or its tip and a hard surface. As such it is non-invasive and does not risk damage to the cantilever. Experimental data is presented for two rectangular microcantilevers with fundamental flexural spring constants of 0.046 and 0.154 N m−1. The experimentally determined torsional stiffness values are compared with those obtained by the Sader method. We demonstrate that the torsional spring constants can be readily calibrated using the method with an accuracy of around 15%." @default.
- W2071193140 created "2016-06-24" @default.
- W2071193140 creator A5072966772 @default.
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- W2071193140 date "2014-05-08" @default.
- W2071193140 modified "2023-09-27" @default.
- W2071193140 title "Calibration of the torsional and lateral spring constants of cantilever sensors" @default.
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- W2071193140 doi "https://doi.org/10.1088/0957-4484/25/22/225701" @default.
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