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We present a comparative study of the elastic stiffness of ultra-thin (5, 20 and 100 nm thick) diamond-like carbon coatings with a sampling depth less than or comparable to the thickness of the coating. The experiments were conducted using atomic force acoustic microscopy, which is a dynamic operation mode of the atomic force microscope that permits the measurement of elastic properties with high...
Atomic force acoustic microscopy is a near-field technique which combines the ability of ultrasonics to image elastic properties with the high lateral resolution of scanning probe microscopes. We present a technique to measure the contact stiffness and the Young's modulus of sample surfaces quantitatively, with a resolution of approximately 20nm, exploiting the contact resonance frequencies of standard...
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