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HomeAuthorsXu J.

Authors: Xu J.

A novel nano-sized polymer microsphere as a potential shale stabilizer in water-based drilling fluids

Xu J., Qiu Z., Chen G., Zhong H., Zhao X., China University of Petroleum, CN
Borehole instability caused by pore pressure transmission and shale hydration gives rise to a number of problems, which has been a challenge during oil and gas drilling process for many years [1]. Recent years, the [...]

Mechanical fabrication of graphene devices using focused-ion beam: deposition and milling

Lei N., Chen Z., Kim D., Xue W., Xu J., Xue W., Washington State University, US
The inherent difficulties in handling and producing graphene have been a major barrier in developing such devices. Conventional microfabrication methods are mostly based on chemical etching processes, which often involve tedious masking and aligning steps. [...]

A Novel Compact Lab-on-a-Chip Nanosensor for In-Channel Liquid Viscosity Detection

Zhao J., Xu J., Xue W., Xue W., Washington State University Vancouver, US
Real-time monitoring of liquid’s viscosity has significant impacts on many areas such as medicine, biology and petrochemistry. However, most existing sensors have complicated fabrication and testing processes and are not truly compatible with fluidic systems [...]

Free-Surface Microfluidics: Exploring New Actuation and Sensing Methods

Yu G., Lei N., Chen X., Xue W., Xu J., Xue W., Washington State University, US
Unlike traditional microchannel-based microfluidics, free-surface microfluidics features no channel, ease to clean, simple design fabrication and operation, as well as external access to the samples. It has been proven that free-surface droplets can be actuated [...]

Microfluidic manipulation of Caenorhabditis elegans using acoustic radiation forces

Yu G., Chen X., Xu J., Washington State University, US
The ability to precisely trap, transport and manipulate micrometer-sized objects is very important in microfluidic applications. Caenorhabditis elegans (C. elegans) is one of the most commonly used animals in biological and medical research due to [...]

Gene Delivery and Transfection in Human Pancreatic Cancer Cells using Epidermal Growth Factor Receptor-Targeted Gelatin Nanoparticles

Xu J., Amiji M., Northeastern University, US
More than 32,000 patients are diagnosed with pancreatic cancer in the United States per year and the disease is associated with very high mortality. Although gene therapy has tremendous promise, the major challenge has been [...]

Characteristics Sensitivity of FinFET to Fin Vertical Nonuniformity

Xu J., Peking University, CN
Characteristic variation of FinFET due to Fin vertical nonuniformity is simulated in this paper, based on the compact device model. This vertical nonuniformity is generated during the real etching process and induces Fin thickness variation [...]

Generation of picoliter and nanoliter drops on-demand in a microfluidic chip

Xu J., Attinger D., Columbia University, US
In this work, we introduce the novel technique of in-chip drop-on-demand, which consists in dispensing picoliter to nanoliter drops on demand directly in the liquid-filled channels of a polymer microfluidic chip. The technique involves a [...]

A Bio-Inspired Rotor Powered by a Micro-Bubble

Kao J., Warren J., Xu J., Attinger D., Columbia University, US
We present and characterize a novel micro-rotor actuation concept, where acoustic oscillations of a micro-bubble produce a steady fluid flow driving a microfabricated rotor at a rotating speed as high as 600 rpm. Developing micro-machines [...]

Feasibility Study of Directed Self-Assembly of Semiconductor Quantum Dots

Friedman L.H., Xu J., Pennsylvania State University, US
Strain mismatched semiconductors are used to form Self-Assembled Quantum Dots (SAQDs). An important step in developing SAQD technology is to control randomness and disorder in SAQD arrays. There is usually both spatial and size disorder. [...]

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