Small cantilevers for force spectroscopy of single molecules

Journal of Applied Physics

Volumn 86, Issue 4, 1999, Pages 2258-2262

  Viani, Mario B ^a   Schäffer, Tilman E ^a   Chand, Ami ^a   Rief, Matthias ^b   Gaub, Hermann E ^b   Hansma, Paul K ^a  

^a UNIVERSITY OF CALIFORNIA   (United States)

^b UNIVERSITY OF MUNICH   (Germany)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0001703652     PISSN: 00218979     EISSN: None     Source Type: Journal    
DOI: 10.1063/1.371039     Document Type: Article

References (32)

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17. Note that cantilevers with stiffer spring constants will have less thermal noise and may be detection noise limited. In this case adding reflector pads would help to improve sensitivity.
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25. The resonant frequencies of the longest two cantilevers were not measured in water because they were accidentally broken prior to measurement.
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30. These spectra were obtained with the following conditions. The deflection signal was low pass filtered at 300 kHz and digitized at 1 MHz for the large cantilever. The deflection signal was low pass filtered at 1 MHz and digitized at 2.5 MHz for the small cantilever.
31. The narrow 200-μm-long V-shaped silicon nitride cantilever sold by Digital Instruments, Santa Barbara, CA 93117.
32. The assumption that the thermal spectrum is proportional to the cantilever response function is true if the thermal noise driving force is independent of frequency. Although we have not experimentally verified that the thermal noise driving force is independent of frequency, we are unaware of any measurements or theoretical prediction that would indicate this not being true for the bandwidth of interest here.