Abstract
In their present embodiment, sensors used in interfacial force microscopy do not have the necessary mechanical bandwidth to be employed as free-running tapping mode devices. We describe an extremely stable method of obtaining tapping mode images using feedback on the sensor. Our method is immune to small dc drifts in the force signal, and the prospect of diminishing the risk of damaging fragile samples is realized. The feasibility of the technique is demonstrated by our imaging work on a Kevlar fiber-epoxy composite. We also present a model which accounts for the frequency dependence of the sensor in air when operating under closed loop control. A simplified force modulation model is investigated to explore the effect of contact on the closed loop response of the sensor.
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Dates
Type | When |
---|---|
Created | 23 years ago (July 26, 2002, 8:29 a.m.) |
Deposited | 1 year, 6 months ago (Feb. 7, 2024, 1:46 a.m.) |
Indexed | 2 months, 4 weeks ago (May 21, 2025, 5:09 p.m.) |
Issued | 27 years, 9 months ago (Nov. 1, 1997) |
Published | 27 years, 9 months ago (Nov. 1, 1997) |
Published Print | 27 years, 9 months ago (Nov. 1, 1997) |
@article{Warren_1997, title={Tapping mode imaging with an interfacial force microscope}, volume={68}, ISSN={1089-7623}, url={http://dx.doi.org/10.1063/1.1148356}, DOI={10.1063/1.1148356}, number={11}, journal={Review of Scientific Instruments}, publisher={AIP Publishing}, author={Warren, O. L. and Graham, J. F. and Norton, P. R.}, year={1997}, month=nov, pages={4124–4131} }