3,965 research outputs found

    6.4 GHz Acoustic Sensor for In-situ Monitoring of AFM Tip Wear

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    This paper demonstrates an acoustic sensor that can resolve atomic force microscopy (AFM) tip blunting with a frequency sensitivity of 0.007%. The AFM tip is fabricated on a thin film piezoelectric aluminum nitride (AlN) membrane that is excited as a film bulk acoustic resonator (FBAR). We demonstrate that cutting 0.98 μm off of the tip apex results in a resonance frequency change of 0.4MHz at 6.387GHz. This work demonstrates the potential for in-situ monitoring of AFM tip wear

    Atherosclerotic Renovascular Disease

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    An exact single-agent task selection algorithm for the crowdsourced logistics

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    Agency for Science, Technology and Research (A*STAR); Fujitsu; National Research Foundation (NRF) Singapor

    Critical Digital Making: Art, Design, and Education Collaboration in Virtual Worlds

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    Nano-electromechanical Zero-dimensional Freestanding Nanogap Actuator

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    Micromachined free standing nanogap with metal electrodes is presented. The gap size is as small as 17 nm, and can be reduced further with electrostatic or piezoelectric actuation. The nanoscale gap is fabricated by industrial standard optical lithography and anisotropic wet chemical Si etching. Electron transport between the metal electrodes with optical stimulus enhancing photon-electron coupling (plasmon) is presented
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