Nokia Technologies Oy

Nokia Corporation

Cambridge Semiconductor Limited

Gehan Amaratunga

Haolan Wang

Pritesh Hiralal

Di Wei

Markku Rouvala

Markku Antti Kyosti Rouvala

Husnu Emrah Unalan

Piers Andrew

Vinod A Lalithambika

Yinglin Liu

Tim John Mellow

Jayaraman Kumar

Devarahandi Indika Mahaesh De Silva

Nalin Lalith Rupesinghe

Markku Antti Kyösti Rouvala

An electrical energy storage device structure comprises a first conductive sheet, a second conductive sheet and an electrolyte sheet placed between the first conductive sheet and the second conductive sheet. In the device, at least one of the first conductive sheet and the second conductive sheet comprises a layer of carbon nanoparticles. The carbon nanoparticle layer is arranged to be adjacent to the electrolyte sheet. The carbon nanoparticles may include both high aspect ratio carbon nanoparticles and low aspect ratio carbon nanoparticles. The device is flexible and at least partially transparent.

Nano-structured flexible electrodes, and energy storage devices using the same

An energy storage device structure comprises a first electrode layer, an electrolyte layer and a second electrode layer. At least one of the electrode layers comprise a metallic base layer, a layer of carbon nanotubes grown on the base layer and a layer of carbon nanoparticles disposed on the carbon nanotube layer, the carbon nanoparticle layer being arranged to face the electrolyte layer. The structure has much larger width and length than thickness, so it is rolled up or folded and then hermetically sealed to form an energy storage unit. The layer of carbon nanotubes is grown on the metallic base layer by a chemical vapor deposition process at a temperature no higher than 550&#xb0; C. The carbon nanotubes in the carbon nanotube layer are at least partially aligned in a direction that is perpendicular to the surface of the metallic base layer.

High efficiency energy conversion and storage systems using carbon nanostructured materials

An apparatus, the apparatus including first and second circuit boards, and an electrolyte, the first and second circuit boards each including a capacitive element, wherein the apparatus is configured such that a chamber is defined between the first and second circuit boards with the capacitive elements contained therein and facing one another, the chamber including the electrolyte, and wherein the apparatus is configured to store electrical charge when a potential difference is applied between the capacitive elements.

Supercapacitor having a circuit board defining an electrolyte chamber

An apparatus and method of providing an apparatus, the apparatus including: a loudspeaker configured to convert an electrical input signal into an acoustic output signal; and carbon nanohorn material wherein the carbon nanohorn material is positioned so as to be exposed to the acoustic output signal.

Apparatus and method

This invention relates to switch mode power supply (SMPS) controllers employing primary side sensing. We describe an (SMPS) controller which uses an area correlator to compare an area under a feedback signal waveform between a start point defined by said first timing signal and an end point defined by said second timing signal with a reference area. An output of the area correlator provides an error signal for regulating the SMPS output.

Switch mode power supply controllers

Growing community of inventors

Cambridge, United Kingdom

Gehan Amaratunga