SG – Page 7 – TechConnect Briefs

Evaluation of Antibacterial Activities of Zinc Oxide-Titanium Dioxide Nanocomposites Prepared by Sol-Gel Method

Chang H., Leung H., Nanyang Polytechnic, SG

Antibacterial activity of ceramic powders has attracted attention as a new technique that can substitute for conventional methods using organic agents. Ceramic powders of zinc oxide (ZnO), calcium oxide (CaO) and magnesium oxide (MgO) were [...]

Heat Transfer Cost-Effectiveness of Nanofluids

Xu D., Pan L., Yao Q., Institute og High Performance Computing, SG

When metal or oxide nano particles are dispersed in fluids to form nanofluids, the particles will improve the thermal conductivity of the fluids. Therefore, it is suggested to use nanofluids as coolant to improve heat-exchanger [...]

Gummel Symmetry with Higher-order Derivatives in MOSFET Compact Models

See G.H., Zhou X., Chandrasekaran K., Chiah S.B., Zhu G.J., Zhu Z.M., Lim G.H., Wei C.Q., Lin S-H, Zhu G.J., Zhu Z.M., Nanyang Technological University, SG

One of the critical problems in Gummel symmetry at higher-order derivatives that still exists in current and next generation MOS compact models has been solved with a simple modification of the mathematical smoothing function. The [...]

Unified Compact Model for Generic Double-Gate MOSFETs

Zhou X., See G.H., Zhu G.J., Zhu Z.M., Chandrasekaran K., Zhu G.J., Zhu Z.M., Rustagi S.C., Lin S-H, Wei C.Q., Lim G.H., Nanyang Technological University, SG

A generic double-gate (DG) MOSFET follows a generalized (input) voltage equation from the first integral of Poisson equation and Gauss' law at the two gates, which is implicit and, in general, non-integrable when the channel [...]

Numerical simulation of the droplet generation mode transition of the co-flowing liquids in micro-channel

Hua J.S., Cheng M., Liu T.G., Institute of High Performance Computing, SG

A front tracking method based multiphase flow simulation (Unverdi and Tryggvason, 1992) is adopted to investigate the transition mechanism of droplet formation modes of dripiing and jetting. The numerical method solves a single set of [...]

Three-Dimensional Transient Motion of Spherical and Deformable Droplet in L-Shaped Rectangular Microchannel

Kang C.W., Hua J.S., Lou J., Institute of High Performance Computing, SG

Three-dimensional transient motion of spherical and small deformable droplet in an L-shaped rectangular channel is investigated numerically. The methodology employed is front tracking coupled with the parallel adaptive refinement meshing code, referred as PARAMESH. The [...]

Heat Conduction Analysis of Nano-tip in Thermal-assisted Data Storage via Molecular Dynamics Simulation

Liu X.J., Yang J.P., Yang Y-W, Yang J.P., Yang Y-W, Data Storage Institute, SG

The thermal characterization of nano-tip and media is a fundamental issue for the reliability of thermal-assisted writing processes in the data sotrage. In this paper, nanoscale heat transfer properties in/between nano-tip and media are analyzed [...]

Nonequilibrium molecular dynamics simulation for size effects on thermal conductivity of silicon nanostructures

Liu X.J., Yang J.P., Yang Y-W, Yang J.P., Yang Y-W, Nanyang Technological University, SG

The thermal conductivity of silicon nanostructures was investigated using the Tersoff potential based Nonequilibrium molecular dynamics (NEMD) simulation approach. In such bond-order NEMD simulation model, the quality of the Tersoff potential for heat transport of [...]

Directed Growth of Carbon Nanotubes Utilizing Plasma Induced Surface Charging Voltage

Law J.B.K., Koo C.K., Thong J.T.L., National University of Singapore, SG

In this work, we present a method for directed lateral growth of CNTs between electrodes on a substrate during an in-situ CNT growth process, by utilizing plasma induced charging inherent in a Radio Frequency (RF) [...]

Direct observation of carbon nanostructures growth using in-situ ultrahigh vacuum transmission electron microscopy

Foo Y.L., Lin M., Tan J.P.Y., Boothroyd C.B., Tok E.S., Institute of Materials Research and Engineering, SG

The growth dynamics of single-walled carbon nanotube (SWNT) is observed in real-time using an in-situ ultra-high vacuum transmission electron microscope at 650 oC. The SWNTs preferentially grow on smaller sized catalyst particles (diameter ≤ 6 [...]