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Scanning Nearfield Acoustic Microscopy
1990Scanning Nearfield Acoustic Microscopy (SNAM) is a new method for imaging the topography of non-conducting surfaces using a vibrating tip of high Q as distance sensor. A 32 kHz quartz tuning fork is used as an oscillator driven at resonance by a feedback loop. The feedback signal is used both to excite and to detect the oscillation.
P. Guethner +3 more
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Acoustic Scanning Probe Microscopy
2013From the contents: Overview of acoustic techniques.- Contact dynamics modelling.- Cantilever dynamics: theoretical modeling.- Finite elements modelling.- AFAM calibration.- Enhanced sensitivity.- UAFM.- Holography calibration.- UFM.- Friction/lateral techniques.- Harmonix.- Scanning microdeformation microscopy (SMM).- Tip wear.- Comparison with other ...
MARINELLO, FRANCESCO +2 more
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Scanning tomographic acoustic microscopy using shear waves
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 1997We propose to use shear waves instead of longitudinal waves in a novel scanning tomographic acoustic microscope (STAM) in which the specimens are solid. When a specimen with a shear modulus is immersed in the microscope's water bath, mode conversion takes place at the water-solid interface.
D, Ko, A, Meyyappan
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Scanning Laser Acoustic Microscopy
SPIE Proceedings, 1985Following the suggestion of S.Y. Sokolov ( USSR ), a method and equipment has been developed whereby shortwavelength acoustic energy is used to produce magnified views of optically opaque samples non-destructively. The objective of this presentation is to acquaint the audience at this conference with the principle of operation and the application ...
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Scanning tomographic acoustic microscopy
The Journal of the Acoustical Society of America, 2002This paper provides an overview of the design and development of the scanning tomographic acoustic microscopy (STAM). This research effort spans over a period of more than 12 years, which successfully elevated the acoustic microscopy from the traditional intensity-mapping mode to the level of holographic and tomographic imaging. The tomographic imaging
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Acoustic properties of aortic aneurysm obtained with scanning acoustic microscopy
Ultrasonics, 2004In aortic aneurysm tissues, macrophages and their secretion of matrix metalloproteinases (MMPs) are playing important role for tissue degeneration. Some studies have shown that weakening of the mechanical properties of the degenerated tissues may progress the expansion of the aneurysm.
Yoshifumi, Saijo +4 more
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Recent developments in scanning acoustic microscopy
Radio and Electronic Engineer, 1982The operating principles of the Quate-Lemons scanning acoustic microscope and some recent developments in the detection and interpretation of acoustic images are reviewed. In particular the measurement of elastic constants using the microscope, which may ultimately provide a new high resolution technique for material characterization, is demonstrated.
D.A. Sinclair +2 more
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Acoustic Scanning Probe Microscopy: An Overview
2012In this chapter, which serves as an introduction to the entire book, an overview is given of techniques resulting from the synergy between ultrasonic methods and scanning probe microscopy (SPM). Although other acoustic SPMs have been developed, those reviewed in this book are either the earliest proposed techniques, which are most widespread ...
PASSERI, Daniele, F. Marinello
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Phase singularities in scanning acoustical microscopy
The Journal of the Acoustical Society of America, 1995Phase sensitive techniques in scanning acoustical microscopy (SAM) yield information on surface height, film thickness, and other sample attributes that is not easily obtained from amplitude imaging alone. The process of unwrapping to obtain the spatial dependence of the attribute from a phase image breaks down in the vicinity of singular points where ...
A. G. Every +4 more
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Scanning Acoustic Microscopy Beyond Conventional Applications
ECS Meeting Abstracts, 2015The ultimate aim in the development of concepts, methods and architectures in microelectronic technologies is the continuous reduction of lateral dimensions by increasing integration density, functionality and processing performance of electronic and microelectronic components.
Sebastian Brand, Matthias Petzold
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