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Effect of electric field on metallic SWCNT interconnects for nanoscale technologies

Journal of Semiconductors 2015年第3期36卷 92-98页

作者： Harsimran Kaur karamjit singh sandha Department of Electronics and Communication Engineering Thapar University

The influence of an electric field on metallic single walled carbon nanotube （SWCNT） interconnects is studied. A voltage-dependent equivalent circuit model is presented for the impedance parameters of single-wall carbon nanotubes that capture various electron-phonon scattering mechanisms as a function of the electric field. To estimate the performance of SWCNT bundle interconnects, signal delay and power dissipation are calculated based on the field dependent model that results in an improvement in the delay and power estimation accuracy compared to the field-independent model. We find that the power delay product of a SWCNT bundle increases with the increase in electric field but decreases with technology scaling showing that at a low electric field, the SWCNT bundle is a potential reliable alternative interconnect for future high performance VLSI industry at scaled technologies.

关键词： carbon nanotube single wall carbon nanotube metallic single wall carbon nanotube multiwall carbon nanotube very large scale integration

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Photo-Catalytic Activity of Ca<sub>1-x</sub>Ni<sub>x</sub>S Nanocrystals

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Optics and Photonics Journal 2015年第7期5卷 205-211页

作者： Rupali Sood Barinder singh Dinesh Kumar H. S. Bhatti karamjit singh Department of Physics Punjabi University Patiala India

Ca1-xNixS (0 ≤ x ≤ 0.05) nanocrystals have been synthesized by facile solid state reaction method. Synthesized nanocrystals are further etched with mild acid solutions to reduce the particle size, which augments the surface to volume ratio and confinement of carriers. Crystallographic and morphological characterizations of synthesized nanomaterials have been done by X-ray diffraction and electron microscopy, respectively. Comparison of the diffraction and electron microscopy studies reveal the formation of single crystalline nanostructures. Optical characterization of synthesized nanomaterials has been done by UV-vis. absorption spectroscopic studies. The photo-catalytic activity of synthesized nanomaterials under UV irradiation has been tested using methylene blue (MB) dye as a test contaminant in aqueous media. Photo-catalytic behaviour dependence on dopant concentration and etching has been thoroughly studied to explore the potential of synthesized nanomaterials for next era optoelectronic industrial applications as well as polluted water purification.

关键词： Ca1-xNixS Nanocrystals Crystallography Morphology Photo-Catalytic Activity

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