CN – Page 19 – TechConnect Briefs

Fabrication and assembly of nanowrinkle patterns on metallic surface: a nonlithography method for nano fabrication

Zhang Z., Guo C., Liu Q., National Center for Nanoscience and Technology, China, CN

Ordered periodic nanostructures have shown its great importance in both fundamental research and practical use. Motivated by wrinkles, which are ubiquitous in nature, artificial patterns with micro periods were fabricated in stiff/soft bilayer. Compare to [...]

A facile low-temperature route for preparing monodisperse Mn3O4 nanopolyhedrons from amorphous MnO2 nanoparticles

Ma J., Zhang S., Liu W., Zhao Y., University of Shanghai for Sci& Tech., CN

In the paper, we firstly show a facile hydrothermal route for synthesizing monodisperse Mn3O4 nanopolyhedrons directly used new-made amorphous MnO2 nanoparticle with its mother solution as precursors. The hydrothermal process was performed at 160 ºC [...]

The influences of nanoscale titanium dioxide particle size and crystal structure on light absorbance

Zou M., Yang F., Ma J., Chen Y., Cao L., Liu F., Chinese Academy of Inspection and Quarantine, CN

Nanoscale titanium dioxide is an important physical sun-block material and is widely used in sunscreen. In our test, the influences of the particle size and crystal structure on light absorbance were examined. The experiment shows [...]

Vertically Aligned Carbon Nanotube Arrays assembled on Glassy Carbon electrode

Sun J., Peking University, CN

We provide a strategy to vertically arrange single-walled carbon nanotubes on graphite electrode. The strategy is rather convenient and opens a new way to modify the graphite electrode with standing carbon nanotubes, which is criticle [...]

Oxygen Vacancies induced ferromagnetism in undoped and Cr doped SnO2 nanowires

Zhang L., Ge S., Zuo Y., Jing Q., Lanzhou University, CN

Observations of room temperature ferromagnetism (FM) in various pristine oxides have been reported recently. The findings have urged researchers to explore the origin of FM, but there is no uniform model to explain this issue [...]

Enhanced ferromagnetism and weak polarization of multiferroic BiFeO3 synthesized by sol-gel auto-combustion method

Wang G.M., Xu J.M., Zhang D., China University of Geosciences, CN

BiFeO3 nanoparticles and ceramics were prepared by sol-gel auto-combustion method. Optimal conditions for the synthesis of pure BiFeO3 nanoparticles were experimentally obtained by X-ray diffraction patterns analysis. Scanning electronic microscope was used to investigate microstructure [...]

A Sonoelectrochemical Synthesis of Nanosized CdS on TiO2 Nanotube-Array for Enhancing Photoelectrochemical Reactivity

Wang C-L, Sun L., Yun H., Li J., Lin C.J., Lai Y.K., Lin C.J., Xiamen University, CN

The nanoparticles of CdS were precipitated onto a self-organized TiO2 nanotube array photo-electrodes by using sonochemical synthesis combining with constant current electrochemical deposition. It is indicated that the CdS nanoparticles with average diameter of 28.1 [...]

Design and Analysis of a New Energy Harvesting Device Based on Knudsen Effect

Zhang P., Du R., The Chinese University of HongKong, CN

In this paper, a new energy harvesting method based on Knudsen compressor is proposed. We first study the possibility of Knudsen compressor working in near atmosphere pressure by Direct Simulation Monte Carlo (DSMC) method which [...]

Compact Modeling of Dynamic Threshold Voltage of FinFET High K Gate Stack and Application in Circuit Simulation

He F., Ma C., Li B., Lin X., Zhang L., Zhang X., Zhang L., Zhang X., Lin X., SZPKU, CN

Compact modeling study of dynamic threshold voltage of FinFET high K gate stack is proposed in this paper. Both slow transient (STCE) and fast transient charging effect (FTCE) are included in this model. Finally, this [...]

Computation Efficient yet Accurate Surface Potential Based Analytic Model for Symmetric DG MOSFETs to Predict Current-Voltage Characteristics

Song Y., Zhang J., Zhang L.N., Zhang J., Zhang L.N., Zhuang H., Che Y.C., He J., Chan M., Peking University, CN

A computation efficient yet accurate surface potential-based analytic model for the symmetric double-gate MOSFETs is proposed to simulate double-gate device current-voltage characteristics in this paper. This model consists of a surface potential versus voltage input [...]