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Volumn 76, Issue 8, 2005, Pages 1-7

Development of a high velocity accessory for atomic force microscopy-based friction measurements

Author keywords

[No Author keywords available]

Indexed keywords

ATMOSPHERIC HUMIDITY; ATOMIC FORCE MICROSCOPY; POLYMETHYL METHACRYLATES; TRIBOLOGY; VELOCITY MEASUREMENT;

EID: 26444565341     PISSN: 00346748     EISSN: None     Source Type: Journal    
DOI: 10.1063/1.1994919     Document Type: Article
Times cited : (12)

References (52)
  • 29
    • 26444561664 scopus 로고    scopus 로고
    • note
    • Tip wear and environmental control over a broad range have also not been addressed.
  • 30
    • 26444585782 scopus 로고    scopus 로고
    • note
    • Modified version with limited maximum voltage up to ±250 V, 50 W.
  • 31
    • 26444478383 scopus 로고    scopus 로고
    • note
    • In principle, for open-loop systems (as described in this article), one can operate the piezo even above its resonance frequency. However, at resonance the amplitudes can become extremely large even for low input signals, which would cause piezo to break. Additionally, at high frequencies, a phase shift between the input signal and the motion of the piezo will occur. This phase shift is negligible at relative low frequencies. In the case of closed-loop operation, the piezos are typically used below 50% of their resonance frequency due to bandwidth limitations of the electronics.
  • 32
    • 26444578008 scopus 로고    scopus 로고
    • note
    • The nominal shear piezo displacement is 5000 nm.
  • 33
    • 26444603602 scopus 로고    scopus 로고
    • note
    • For higher scanning frequencies, due to cutoff of higher-frequency components in the spectrum, the wave form will become distorted. Consequently, from measured frictional signals, the acceleration and deceleration parts were excluded for further analysis, providing satisfactory approximation of linear velocity.
  • 39
    • 26444472635 scopus 로고    scopus 로고
    • note
    • The friction force data are presented in arbitrary units, relative to the reference sample, due to large errors and different results between currently available lateral calibration methods.
  • 45
    • 0003425844 scopus 로고    scopus 로고
    • Kluwer Academic, Dordrecht
    • U. W. Gedde, Polymer Physics (Kluwer Academic, Dordrecht, 1999).
    • (1999) Polymer Physics
    • Gedde, U.W.1
  • 47
    • 0004051758 scopus 로고
    • Cambridge University Press, Cambridge, UK
    • B. W. Cherry, Polymer Surfaces (Cambridge University Press, Cambridge, UK, 1981).
    • (1981) Polymer Surfaces
    • Cherry, B.W.1
  • 49
    • 26444557863 scopus 로고    scopus 로고
    • note
    • E.g., for a scan size of 1 μm the pixel size is 2 nm, by increasing the scan size to 100 μm, the resolution decreases 100 times, and the pixel size equals 200 um. In this case, sample homogeneity and roughness may influence the measured friction force data. Moreover for commercial AFM's, the highest scanning frequencies have discrete values and do not change continuously.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.