Search Results - "acoustic microscopy"

On-chip ultra-fast data acquisition system for optical scanning acoustic microscopy using 0.35um CMOS technology by Dong, Peiliang

“…Optical Scanning Acoustic Microscopy (OSAM) is a non-contacting method of investigating the properties and hidden faults of solid materials. …”
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Development of GHz Optoacoustic lenses for sub-optical resolution imaging by Yao, Mengting

Subjects: “…Optoacoustic lenses; Optical diffraction limit; Brillouin scattering; Optoacoustically generated sound field; Acoustic intensity; Lateral resolution; Acoustic microscopy…”
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Comparison of thermal and reliability performance between a SiC MOSFET module with embedded decoupling capacitors and commercial Si IGBT power modules by Yang, Li, Agyakwa, Pearl, Corfield, Martin, Johnson, Mark, Harris, Anne, Packwood, Matthew, Paciura, Krzysztof

“…Active and passive temperature cycling, supported by transient thermal impedance characterisation and scanning acoustic microscopy, are used to evaluate key degradation mechanisms. …”
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Quantification of cracked area in thermal path of high-powermulti-chip modules using transient thermal impedance measurement by Eleffendi, Mohd. Amir, Yang, Li, Agyakwa, Pearl, Johnson, C. Mark

“…Comparison with estimations of cracked area obtained by scanning acoustic microscopy (SAM) imaging shows excellent agreement, demonstrating that the structure function can be used as a quantitative tool for estimating the level of degradation. …”
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Electrical performance and reliability characterization of a SiC MOSFET power module with embedded decoupling capacitors by Yang, Li, Li, Ke, Dai, Jingru, Corfield, Martin, Harris, Anne, Paciura, Krzysztof, O'Brien, John, Johnson, C. Mark

“…Active power cycling and passive temperature cycling are carried out for package reliability characterization and comparisons are made with commercial Si and SiC power modules. Scanning acoustic microscopy images and thermal structure functions are presented to quantify the effects of package degradation. …”
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Opto-acoustic thin-film transducers for imaging of Brillouin oscillations on living cells by Perez Cota, Fernando

“…Mechanical characterisation of cells has been performed by a number of techniques, such as atomic force microscopy, acoustic microscopy or Brillouin microscopy. Recently, Brillouin oscillations measurements on vegetal and mammal cells have been demonstrated in the GHz range. …”
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Scattering by wave-bearing surfaces under fluid loading by Williams, D.P.

“…Wave-bearing surfaces and compressible fluids are often adjacent, the subsequent interactions are of substantial interest in structural acoustics, acoustic microscopy, seismology and many other fields. Here we take a broad view and discuss a variety of problems, both time harmonic and transient, which are amenable to exact solution. …”
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Inspection of additively manufactured components by spatially resolved acoustic spectroscopy by Dryburgh, Paul

“…This thesis presents the development of spatially resolved acoustic spectroscopy (SRAS) for the materials characterisation of new alloys and additive manufacturing specimens. SRAS is an acoustic microscopy technique that uses laser-generated and detected ultrasound to probe the material properties of crystalline specimens. …”
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Comparison of performance of no-clean and water-soluble fluxes in fine-pitch flip-chip package / Saif Wakeel by Saif , Wakeel

“…The quality of the flip-chip assembly was examined by non-destructive methods e.g., 2D radiography and confocal scanning acoustic microscopy (C-SAM). Moisture sensitivity of the package was evaluated using JESD22-A113D (30 oC/60% relative humidity (RH), 192 hours, 3x reflow at 260 oC). …”
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