SG – Page 11 – TechConnect Briefs

Effects of Temperature and Shape on the Tensile Behaviour of Platinum Nanowire

Koh S.J., Lee H.P., Lu C., Cheng Q.H., Institute of High Performance Computing, SG

This paper presents a classical MD simulation on the tensile behaviour of Pt NWs with round and square cross-sections, with characteristic dimensions of 1nm. The simulations will be performed at room temperature (300K) and an [...]

Scaling Relation for the Size Dependence of Acoustic, Dielectronic and Photonic Behaviour of Nanosolid Silicon

Sun C.Q., Pan L.K., Li C.M., School EEE, NTU, Singapore, SG

Structural miniaturization provides us with a new freedom that is indeed fascinating. The new freedom of size not only allows us to tune the physical and chemical properties of a specimen by simply adjusting the [...]

A Molecular Dynamics Simulation of Multi-wall Platinum Nanowires

Cheng Q.H., Lee H.P., Lu C., Koh S.J., Institute of High Performance Computing, SG

This paper aims to study structural formation and mechanical properties of platinum (Pt) Nanowire (NW) using the classical molecular dynamics (MD) simulation method. A type of multi-shell Pt NWs is obtained from the simulations. These [...]

Nano-Crystalline Ta2O5 Films Deposited by DC Pulsed Magnetron Sputtering

Ligatchev V., Rusli E., Keng L-B, Khuen L-F, Rumin Y., Zhao J., Nanyang Technological University, SG

Thin Ta2O5 layers (95 - 110 nm), deposited at room temperature using pulsed DC magnetron sputtering (PDCMS) in an argon-oxygen (Ar-O2) gas mixture, are investigated. The Ta2O5 samples were prepared at different Ar/O2 flow ratios [...]

Charge Trapping and Charge Decay in Silicon Nanocrystals

Ng C.Y., Ding L., Chen T.P., Nanyang Technological University, SG

For applications of silicon nanocrystals in memory device, it is necessary to understand the discharging behaviors of the nanocrystals as the data endurance in memory and decay constant are important parameters to be measured. In [...]

Optical Properties of Silicon Nanocrystals Embedded in SiO2 Matrix

Ding L., Chen T.P., Liu Y., Nanyang Technological University, SG

In this work, spectroscopic ellipsometry (SE), which is a nondestructive method, is employed to determine the optical constants (refractive index and extinction coefficient) and thus the dielectric functions of the isolated nc-Si with a mean [...]

Structure Induced Ion Recognition of Self-Assembled Monolayers on Gold

Jiang Z., Liu S., Gao Z., Institute of Bioengineering and Nanotechnology, SG

The construction and characteristics of self-assembled monolayers(SAMs) anthraquinone-polyether compounds on gold were described. Surprisingly and in contrast to the behavior of the in solution, the SAMs show very high affinity towards alkali metal ions, as [...]

Electrocatalysis at a Thin Multi-Wall Carbon Nanotube Film Modified Glassy Carbon Electrode

Fei J., Sun Y., Hu S., Gao Z., Institute of Bioengineering and Nanotechnology, SG

Sensitive and selective ascorbic acid biosensors were developed for the determination of ascorbic acid (AA) based on glassy carbon electrode (GCE) coated with a thin multi-wall carbon nanotube (MWNT) film. The MWNT film showed excellent [...]

Modeling and Simulation of Multi-walled Carbon Nanotubes using Molecular Dynamics Simulation

Wong C.H., Liew K.M., He X.Q., Tan M.J., Meguid S.A., Nanyang Technological University, SG

Molecular dynamics simulation is performed on the buckling behavior of single and multi-walled carbon nanotubes under axial compression. Brenners second generation empirical potential is used to describe the many-body short range interatomic interactions for single-walled [...]

Improved O(N) Neighbor List Method Using Domain Decomposition and Data Sorting

Yao Z-H, Wang J-S., Cheng M., National University of Singapore, SG

The conventional Verlet table neighbor list algorithm is improved to reduce the number of unnecessary interatomic distance calculation in molecular simulations involving many atoms. Both of the serial and parallelized performance of molecular dynamics simulation [...]