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Spindle-shaped lead selenide (PbSe) nanocrystals were synthesized by solution processing synthetic method for the first time. The prepared PbSe nanocrystals were characterized by X-ray diffraction, transmission electron microscopy and near-infrared absorption spectroscopy. X-ray diffraction pattern shows that the synthesized PbSe nanocrystals have cubic rock salt structure. Spindle-shaped PbSe nanocrystals...
This paper presents a microfluidic chip with arc-shape electrodes array (ASEA) for separation of different-size particles/Cells based on negative dielectrophoresis (nDEP). The purpose of ASEA is to generate the dielectrophoretic force perpendicular to the microchannel direction within the gap between each pairs of arc-shape electrodes. The DEP chip consisted of two regions of ASEA; first ASEA was...
To make significant progress in the fight against cancer, treatment should target cells more specifically, produce fewer side effects, be easy to administer and deter tumor viability on multiple levels. We have attained dramatic in vivo tumor shrinkage and tumor vasculature disruption using a ternary biomolecular nanoparticle comprised of polymeric carrier polysaccharide heparin, anticancer drug retinoid...
This work presents the design, fabrication and experiments of a new blood-filtering chip based on SU-8 and PDMS. The main function of this blood-filtering chip is to filter the leukocyte out of the blood. This new leukocyte filtered chip is composed of three parts: cover plate, filtering plate and receiving plate. The shape of the transfusing channel is optimized by simulation. The new blood-filtering...
In this study, the shape and thermal effects of metal films on the stress-induced bending of micromachined curved grating are systematically investigated. The characterization of the curved grating with different shape has been performed to observe out-of-plane deformation. A finite-element model has been established to analyze such a deformation. Furthermore, the influence of postprocessing temperature...
This paper deduces a remarkably precise analytical formula for calculating the fundamental resonant frequency of V-shaped cantilevers using Rayleigh-Ritz method. This analytical formula, which is very convenient for MEMS sensor design, is then validated by ANSYS simulation. This formula raises a new perspective that, among all the V-shaped cantilevers, the simplest triangular cantilever can lead to...
In this paper, a newly developed software system for electron beam lithography based on SEM is introduced. This software system consists of exposure layout processing functional module, alignment control functional module and exposure control functional module. It can accomplish the microlithography and micro-nanofabrication layouts design, generate the exposure data files, detect and correct the...
This paper reports a previously overlooked mechanism that has a considerable effect to undermine bubble-driven micropumping in a square-shaped microchannel, and therefore limits the maximum achievable pressure head. Improvement of pumping performance by rounding the microchannel is thus proposed.
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