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A novel scanning tunneling microscope (STM) is described which is constructed almost entirely of one metal e.g. aluminum and uses bimorph piezoelectric disks as the x, y, z drive elements. The design uses a simple, rugged tripod configuration for the fine motion drive arms. Coarse motion of the samp...
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A novel scanning tunneling microscope (STM) is described which is constructed almost entirely of one metal e.g. aluminum and uses bimorph piezoelectric disks as the x, y, z drive elements. The design uses a simple, rugged tirpod configuration for the fine motion drive arms. Coarse motion of the samp...
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Oxides of the type La1.85Sr0.15Cu(1-x)V(x)O4-partial were prepared with vanadium contents, x, ranging from 0 to 0.10 in increments of 0.01. Vanadium entered into solid solution in the tetragonal K-phase structure at concentrations up to x = 0.05. Further additions of vanadium resulted in the formati...
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A sensor has been developed to monitor objects passing through tunnels using a capacitance bridge. While the sensor concept is easily adaptable to a wide range of objects or organisms which pass through an enclosed area, our version of the sensor was designed specifically for monitoring bumblebee co...
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Mainsbridge and Thundat [J. Vac. Sci. Technol. B 9 (1991) 1259] recently reported STM images of chloroplast components. The goal of our work was to investigate the effects of sample preparation and imaging conditions, and to more clearly identify some of the structures that appear in chloroplast ima...
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In this paper we report on the electrical characterization of conductive polyaniline and its derivatives. Conductivity measurements were also performed on the intercalated phases formed by the encapsulation of the polymers into layered molybdenum disulfide. These measurements were performed using th...
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Poly(ethylene glycol) functionalized with an amino group (PEG-amine) was synthesized and characterized by proton NMR and FTIR spectroscopy. The polymer was complexed with lithium triflate (LiOTf) in varying ratios, and it was found that the composition (PEG-amine)8.0LiOTf exhibited a maximum ionic c...
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Previous work has shown that it is possible to image whole uncoated chloroplasts using scanning tunneling microscopy (STM), provided this is done in solution using tunnelling currents below about 100 pA. More recent images include some which suggest that the STM is sensitive to dynamic processes occ...