National Physical Laboratory

Vimal Gopee wins the best poster award at IMAPS UK event

Vimal Gopee wins the best poster award at IMAPS UK event [400x297/100x74]

Vimal Gopee won best poster and presentation at the recent IMAPS conference 'Research to Industry', held at Sheffield University. Vimal's poster, 'New carbon nanotubes (CNT) interconnects', discussed the use of this novel material solution which outperforms traditional interconnect materials, such as copper, with respect to their electrical and thermal conductivity properties.

With the increase in current densities through electronic circuitry brought about by miniaturisation, replacements for traditional materials have to be found. Using carbon nanotube and sintered silver as an electronic interconnect offers a unique high temperature, high conductivity and flexible interconnect solution. A method of transposing arrays of multiwall carbon nanotubes (MWCNTs) from their growth substrates to a target metal substrate is proposed. MWCNT arrays, typically 200 μm in length, were produced by a chemical vapour deposition (CVD) process and were shown by Raman spectroscopy to have relatively few defects. Oxygen plasma treatment was used to functionalise the surfaces so that they bond to the nanoparticle silver. The silver-CNT-silver interconnects were found to be ohmic conductors with resistivity of 0.4 mΩm, whilst operating at temperatures of at least 300 ºC for extended periods.

This is the third prize that Vimal has won for a poster on this CNT work.

Last Updated: 29 Jan 2018
Created: 8 Sep 2015


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