Search results for "gallium nitride"
Two-dimensional MXene materials get their close-up
Researchers have long sought electrically conductive materials for economical energy-storage devices. Two-dimensional (2D) ceramics called MXenes are contenders. Unlike most2Dceramics, MXenes have inherently good conductivity because they are molecular sheets made from the carbides and nitrides of transition metals like titanium.
Using molecules to detune nanodrums
The analysis of the minutest quantities of pharmaceutical samples is of crucial importance for the research and synthesis of new medications. At the moment it represents a technical challenge, but a new infrared method of measurement developed by TU Wien in collaboration with two research groups from Copenhagen may remedy this.
Metamaterial could boost efficiency of lasers
Engineers at the University of California San Diego have developed a material that could reduce signal losses in photonic devices. The advance has the potential to boost the efficiency of various light-based technologies including fibre optic communication systems, lasers and photovoltaics.The discovery addresses one of the biggest challenges in the field of photonics: minimizing loss of optical (light-based) signals in devices known as plasmonic...
Company joins AirFuel Alliance to assist wireless charging development
GaN Systems has joined theAirFuel Alliance, a global, nonprofit consortium of industry leaders responsible for developing wireless charging standards. GaN Systems will aid the alliance by bringing its wireless technology experience, by extending beyond the previously assumed limits of wireless charging, and by assisting the development of global wireless charging standards.
Miniaturising frequency combs
EPFL scientists have found a way to miniaturise frequency combs, realising a new step toward miniaturisation of such tools. Their device can measure light oscillations with a precision of 12 digits.A compact, precision tool for counting and tracking laser frequencies may improve atomic clocks and optical data transmission devices. However, light waves oscillate hundreds of trillions of times per second, a frequency that is impossible to measure d...
Sandia develops 3D metasurfaces with optical possibilities
Sandia National Laboratories researchers are helping lead the way to the use of III-V semiconductors as the building blocks of metamaterials. (III-V refers to elements in those columns in the periodic table.) Sandia researchers have published technical papers, including three in the past year, on work featuring materials like gallium-arsenide and aluminum-arsenide, which are more efficient than metals for optical metamaterial applications, with w...
GaN-on-Silicon optimises high electron mobility transistors
A team of researchers at the University of Illinois at Urbana-Champaign has advanced gallium nitride (GaN)-on-silicon transistor technology by optimising the composition of the semiconductor layers that make up the device. Working with industry partners Veeco and IBM, the team created the high electron mobility transistor (HEMT) structure on a 200 mm silicon substrate with a process that will scale to larger industry-standard wafer sizes.
AT&S joins others to advance key technologies
AT&S is participating in the Horizon 2020 EU Research and Innovation programme along with 11 other organisations who are collaborating on a key GaNonCMOS project. AT&S is also participating in the Panel-Level Packaging Consortium managed by Fraunhofer IZM.
Material to unearth mysteries of magnetic fields
Journeying to the center of the Earth, a la Jules Verne, won't be happening anytime soon. A new material made from a liquid metal and magnetic particles, however, could make it much easier for researchers to recreate the powerful forces at the planet's core.
Noel Tech adds latest wafer-processing capabilities
Noel Technologies has expanded its wafer-fabrication facility in Silicon Valley by adding square footage and installing additional equipment that boost its production capacity by 25%. With additions including an i-line lithography system with 0.35-micron resolution, a top-down CD scanning electron microscope (SEM) and more plasma-enhanced chemical vapor deposition (PECVD) tools, the 20-year-old company has increased its range of foundry services ...