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A new capacitive sensor for displacement measurement in a surface force apparatus | | F. Restagno
; J. Crassous
; E. Charlaix
; M. Monchanin
; | | Date: |
13 Feb 2001 | | Journal: | Meas. Sci. Tech., vol 12, p:16-22, (2001) | | Subject: | Soft Condensed Matter; Disordered Systems and Neural Networks | cond-mat.soft cond-mat.dis-nn | | Abstract: | We present a new capacitive sensor for displacement measurement in a Surface Forces Apparatus (SFA) which allows dynamical measurements in the range of 0-100 Hz. This sensor measures the relative displacement between two macroscopic opaque surfaces over periods of time ranging from milliseconds to in principle an indefinite period, at a very low price and down to atomic resolution. It consists of a plane capacitor, a high frequency oscillator, and a high sensitivity frequency to voltage conversion. We use this sensor to study the nanorheological properties of dodecane confined between glass surfaces. | | Source: | arXiv, cond-mat/0102225 | | Services: | Forum | Review | PDF | Favorites | |
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