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Electrostatic force...
Electrostatic force-feedback force sensor incorporated in an ultrahigh vacuum force microscope
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Yakimov, V (författare)
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- Erlandsson, Ragnar (författare)
- Linköpings universitet,Tekniska högskolan,Tillämpad Fysik
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(creator_code:org_t)
- 2000
- 2000
- Engelska.
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Ingår i: Review of Scientific Instruments. - 0034-6748 .- 1089-7623. ; 71:1, s. 133-136
- Relaterad länk:
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https://urn.kb.se/re...
Abstract
Ämnesord
Stäng
- A force sensor based on a fiber-optic interferometric displacement transducer incorporated in an ultrahigh vacuum atomic force microscope is described. The operation of the sensor is based on balancing the tip-sample interfacial force using an electrostatic actuator. The electrodes of the actuator are formed by the grounded W cantilever and the metallized end facet of the optical fiber used by the interferometer. Chemical reduction of Ag by a wet chemical method is used for metal coating of the fiber end. A special masking procedure is used to obtain a window hole in the metal coating at the position of the fiber core to allow for optical beam output. Using a window instead of a semitransparent metal film allows us to save the low-finesse characteristics of the interferometer which facilitates the calibration of cantilever displacement. The performance of the sensor is discussed and exemplified by experimental results from force-separation measurements on the W-Au system in ultrahigh vacuum. (C) 2000 American Institute of Physics. [S0034-6748(00)01401-5].
Nyckelord
- TECHNOLOGY
- TEKNIKVETENSKAP
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