Energy

Schematic view of an alkali-ion battery on discharge mode. The cathode and anode are shown together with the alkali ions (yellow), the electrolyte (orange) and the separator. Image taken from J Nava-Avendaño and J Veilleux 2017 J. Phys. D: Appl. Phys. 50 163001, © IOP Publishing, All Rights Reserved.

Image of the Week: An alkali-ion battery

By Dean Williams on April 3, 2017

This week’s Image of the Week is a schematic view of an alkali-ion battery on discharge mode. The cathode and anode are shown together with the alkali ions (yellow), the electrolyte (orange) and the separator. The image is taken from… Read More ›

Schematization of the electronic structure of perylene and graphene and the arrangements of the components in the hybrid structure. The spatial separation between the graphene crystal and the perylene molecules is also indicated (d). Note that perylene and graphene are coupled via near-field electromagnetic interaction and the electronic wave functions are separated by the insulating PMMA layer.

Spectacularly long range energy transfer to graphene

By Dean Williams on August 2, 2016

Can graphene be used as a nanoscopic ruler over a wide range of distances?

Sketch of the operating regimes of a rectenna as a function of the source voltage and the photon energy divided by the electronic charge.

Rectifying light

By Dean Williams on July 21, 2016

The optical rectenna: where Maxwell meets Einstein