Optical heterodyne force microscopy
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We present a new technique, Optical Heterodyne Force Microscopy, that allows local probing of photothermally-induced ultrasonic vibrations of a sample surface. We demonstrate with images of a sample of highly-oriented pyrolytic graphite obtained at megahertz optical modulation frequencies that lateral resolution of surface and subsurface variations in thermal properties can be achieved on nanometer scales
Published in:
Ultrasonics Symposium, 1998. Proceedings., 1998 IEEE
(Volume:2
)
Date of Conference: 1998