HRL Laboratories Patent applications |
Patent application number | Title | Published |
20130119400 | SELF-ALIGNED SIDEWALL GATE GaN HEMT - A method of fabricating a GaN HEMT includes growing a first epitaxial layer on a substrate, growing a second epitaxial layer on the first epitaxial layer, growing a third epitaxial layer on the second epitaxial layer, depositing a first dielectric film on the third epitaxial layer, using dielectric films to form a first sidewall dielectric spacer, forming a sidewall gate adjacent the first sidewall dielectric spacer. The sidewall gate may be made to be less than 50 nm in length. | 05-16-2013 |
20120244475 | METHOD TO PRODUCE A FUEL CELL FLOWFIELD WITH PHOTOPOLYMER WALLS - A method for fabricating a flowfield for a fuel cell includes the steps of: providing a substrate; providing a plurality of radiation sources configured to generate a plurality of radiation beams; disposing a radiation-sensitive material on the substrate; placing an imaging mask between the plurality of radiation sources and the radiation-sensitive material; and exposing the radiation-sensitive material to the plurality of radiation beams through a first portion of the radiation-transparent apertures and a second portion of the radiation-transparent apertures in the imaging mask to form the plurality of truss elements and the plurality of wall elements in the radiation-sensitive material, the truss elements forming a plurality of trusses configured to support an adjacent diffusion medium layer, and the wall elements defining a fluid path along a length of the substrate. | 09-27-2012 |
20110094216 | VEHICLE ENERGY HARVESTING DEVICE USING VEHICLE THERMAL GRADIENTS - A vehicle includes an energy harvesting system. The energy harvesting system includes a fluid, a heat engine, and a component. The fluid has a first fluid region at a first temperature and a second fluid region at a second temperature that is different from the first temperature. The heat engine is configured for converting thermal energy to mechanical energy and includes a shape-memory alloy disposed in contact with each of the first fluid region and the second fluid region. The component is driven by the heat engine in response to the temperature difference. | 04-28-2011 |