Figure 3: Average deflection of HSA immobilized cantilever (blue) and reference PEG12-CL SAM immobilized cantilever (black) upon injection of 100 mM CoCl2 at various pHs A) pH 7; B) pH 12; C) pH 3. The signals are filtered from noise by smoothening and baseline adjustment is done by subtracting a straight line in Origin Pro 8 (graphing and data analysis software). Inset shows the unfiltered cantilever signals.