Efficient detection of the acoustic signal constitutes the most critical aspect in Shear-force Acoustic Near-field Microscopy. This characterization technique utilizes the dynamic response of the fluid trapped, under shear stress, between a nanoprobe and a flat substrate. Herein we report a 10dB improvement in signal-to-noise ratio of a piezoelectric acoustic sensor using an impedance matched...
ABSTRACT
Shear Acoustic Near-field Microscopy (SANM) is employed to monitor the viscoelastic response of water meniscus trapped between a laterally oscillating solid nano-probe and a solid flat substrate. It has been suggested that, at ambient conditions, the formation of such a meniscus suddenly and stochastically forms in the last 30 nm of the probe’s approaching trip. Using tapered...
