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The present work experimentally investigates the correlations between ultrasonic attenuation coefficient and void content with the porosity 0.03%-4.96% of the carbon fiber-reinforced composite (CFRC) samples. The ultrasonic echo immersion bottom reflection technique with 5MHz flat probe is adopted to determine the attenuation coefficient and the(More)
Paula Wetmore Val Krukonis Kara Williams Phasex Corporation Lawrence, Massachusetts 01843 Abstract. More than 50 fluorocarbon liquids are measured for transparency over the wavelength range 150 to 200 nm for the purpose of identifying a suitably transparent fluid for use in 157-nm liquid immersion lithography. Purification methods such as degasification,(More)
Hot embossed microstructures fabricated by laboratory and commercial environments have been studied. The laboratory process uses silicon with micropyramid patterns as the mold insert. Fine replication by using Polymethyl Methacrylate (PMMA) has been achieved. The commercial process uses electroplated nickel as the mold insert. Polyvinyl Chloride (PVC),(More)
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