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This paper reports programmable micropatterning of electrospun nanofibrous materials using micropatterned collecting chips that consist of independently programmable microelectrodes. By regulating the local electrical field using activated and floating electrodes, the collecting chip allows creating the pattern of electrospun fibrous microstructures with controllable local orientation. This work provides...
This work reports the development of a porous microfluidic system which can serve as an in vitro model of natural vessels in circulatory and respiratory systems. The model possesses both structural and mechanical characteristics of the natural counterparts. To mimic the semi-permeable wall of natural vessels, microfluidic channels with porous walls are fabricated by spinning polymeric nanofibers on...
This paper reports a simple fabrication approach to create microstructures in electrospun polymer nanofibers. A collector chip with micropatterned electrodes generates electromechanical energy wells above the substrate, which induce selective patterning of polymer nanofibers on the collecting surface. This work provides a sound technology to interface electrospun nanomaterials to larger scaled structures...
This paper reports a liquid droplet based motion sensing system with advantages of simple fabrication, superior biocompatibility and binary signals. The sensor consists of a dielectric substrate and an array of microelectrodes patterned by surface micromachining techniques. In this sensing system, an ionic droplet behaves as the proof mass which responses to external applied acceleration. A lumped...
This paper reports the use of electrical discharge for fabricating microstructures on electrospun polymer nanofibers. Microchips containing an array of conductive microelectrodes are fabricated. Electrical discharges are induced by applying high electrical voltage to these microelectrodes. The thermal energy generated by the micropatterned discharge arcs elevates the temperature in localized regions...
This paper reports the use of a microchip containing microfabricated electrode arrays for investigation of in vitro differentiation process of skeletal myoblasts. The microelectrodes array was designed and fabricated to generate controllable electric fields to skeletal myoblasts during their proliferation and differentiation processes. The results showed that the electric signals with low amplitude...
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