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. Author manuscript; available in PMC: 2014 Apr 4.
Published in final edited form as: Methods. 2013 Apr 4;60(2):131–141. doi: 10.1016/j.ymeth.2013.03.029

Fig. 6.

Fig. 6

Stretching DNA with uncoated cantilevers exhibits sub-pN force stability. (A) Force-extension curve of DNA at a 400 nm/s pulling velocity. The high-bandwidth data (2.5 kHz) for approach (light pink) and retraction curves (light purple) were smoothed (100 Hz, purple and red). (b) Force-versus-time trace smoothed to 10 Hz while holding DNA at constant extension at 22.6 pN (pink), 27.1 pN (blue), and 62.1 pN (green). High-bandwidth data are shown in light colors with traces displaced for clarity. This figure is reprinted from [5] with permission from the American Chemical Society.