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We have measured the angular distribution of carbon K-Auger electrons from fixed in space, core-ionized, CO molecules in coincidence with the kinetic energy release of the C+ and O+ fragments. We find a very narrow ejection of Auger electrons in the direction of the oxygen and an oscillatory diffraction pattern. Even for similar electron energies, the(More)
[1] The presence of clay minerals, hydrous aluminosilicates that are smaller than 2 mm can alter the elastic and plastic behavior of materials significantly. We have used Atomic Force Acoustic Microscopy (AFAM) to measure elastic properties of clay minerals. We demonstrate the AFAM technique for measuring elastic properties of soft materials. Using this(More)
Biological macromolecules represent a valuable source of information for the identification and phylogenetic classification of microorganisms. One of the most commonly used macromolecules for this task is the 16S rDNA. The WWW-based RIFLE system presented here supports large-scale identification tasks by comparing 16S rDNA restriction patterns to a database(More)
frequency response of atomic-force microscope cantilevers" (1997). Faculty Publications from the Department of Engineering Mechanics. Paper 2. Recent advances in atomic-force microscopy have moved beyond the original quasistatic implementation into a fully dynamic regime in which the atomic-force microscope cantilever is in contact with an insonified(More)
The Philae lander, part of the Rosetta mission to investigate comet 67P/Churyumov-Gerasimenko, was delivered to the cometary surface in November 2014. Here we report the precise circumstances of the multiple landings of Philae, including the bouncing trajectory and rebound parameters, based on engineering data in conjunction with operational instrument(More)
The distribution of elastic stiffness and damping of individual phases in an α + β titanium alloy (Ti-6Al-4V) measured by using atomic force acoustic microscopy (AFAM) is reported in the present study. The real and imaginary parts of the contact stiffness k (*) are obtained from the contact-resonance spectra and by using these two quantities, the maps of(More)
Plastic bonded explosives are highly filled polymers containing up to 90% high energy crystalline solid loads. Different non-destructive diffraction techniques such as rocking curve imaging were applied in order to characterize the microstructure and ingredients of PBX KS32, including its behavior in shock-loading tests. The investigations revealed a(More)
Comparative investigation of Al 2 O 3-and ZrO 2 nanopowders synthesized by different methods. Optical properties of polymer-nanopowder composites. Ceramic nanoparticles coated with polymers based on acrylic derivatives. Complex high frequency properties of ceramic-polymer nanocomposites: comparison of fluoropolymers and acrylic based compounds. Microwave(More)