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This paper mvestlgates the elcctrostatlc dnve and sense of polynhcon resonators parallel to the substrate, using an mterdlgtated capacitor (elec-trostatic comb) Three expenmental methods are used nucroscoplc observation mth contmuous or stroboscopic iummatlon, capacltlve sensing using an amphtude-modulation technique and SEM observation The mtnnslc quality(More)
Interdigitated finger (comb) structures are demonstrated to be effective for exciting electro-statically the resonance of polysilicon microstruc-tures parallel to the plane of the substrate. Linear plates suspended by a folded-cantilever truss and torsional plates suspended by spiral and serpen-tine springs are fabricated from a 2/~m-thick phosphorus-doped(More)
A clamp-and-ratchet microstructure based on poly crystalline silicon (polysilicon) microelectromechanical systems (MEMS) technology has been designed to exert mechanical tension along radial glial processes between groups of neural stem cells to study the effect of tension on cerebral cortex neurogenesis. FEA analysis shows that the design should not fail(More)
  • Juergen Mueller, William C Tang, Ancll~w P Wallace, Wen Li, David Bame, Indrani Chakraborty +1 other
  • 1999
The design and fabrication of a newly proposed vaporizing liquid micro-thruster concept i s described. The intended purpose of this thruster concept is for use as an attitude control device o n new generations of very small spacecraft envisioned by the National Aeronautics and Space Administration (NASA), ranging in mass between 1-20 kg. The vaporizing(More)
UNLABELLED In this article we demonstrate the effect of mechanical compression on the behavior of cultured neural stem cells using a microelectromechanical system platform. Polydimethylsiloxane (PDMS)-based stretchable substrates were used on a neurosphere (NS) assay to investigate the role of mechanical forces on the formation of radial glial processes and(More)
The Coastal Ocean Action Strategies (COAST) Institute was created in 1989 within the School of Marine and Atmospheric Sciences to assist in coastal zone management and coastal marine policy analysis. We do this by exploring future scenarios for Long Island's coastline and coastal environment and by working with policy makers and environmental managers in(More)
Orthorhombic Li x FePO 4 (0 ≤ x ≤ 1) system has attracted much attention for its application as a high power cathode material in lithium ion batteries. [ 1 ] Although the performance of this material has been greatly improved by cation doping, surface coating and size reduction, [ 2–4 ] the fundamental phase transformation mechanisms accompanying(More)
—The mechanical interactions between cells and the extracellular matrix (ECM) play important roles in many biological processes, including cell proliferation, migration, and differentiation. The cells can probe the stiffness of the ECM and alter their own function accordingly. The objective of this study was to investigate the applicability of a(More)