tag: diamond

Excess noise in high-current diamond diodes
By Technical Paper Link - 17 Feb, 2022 - Comments: 0

Abstract "We report the results of an investigation of low-frequency excess noise in high-current diamond diodes. It was found that the electronic excess noise of the diamond diodes is dominated by the 1/f and generation-recombination noise, which reveals itself as Lorentzian spectral features (f is the frequency). The generation-recombination bulges are characteristic of diamond diodes with l... » read more

Fabrication of GaN/Diamond Heterointerface and Interfacial Chemical Bonding State for Highly Efficient Device Design
By Technical Paper Link - 10 Jan, 2022 - Comments: 0

Abstract "The direct integration of gallium nitride (GaN) and diamond holds much promise for high-power devices. However, it is a big challenge to grow GaN on diamond due to the large lattice and thermal-expansion coefficient mismatch between GaN and diamond. In this work, the fabrication of a GaN/diamond heterointerface is successfully achieved by a surface activated bonding (SAB) method at r... » read more

Power/Performance Bits: April 14
By Jesse Allen - 14 Apr, 2020 - Comments: 0

Undoped polymer ink Researchers at Linköping University, Chalmers University of Technology, University of Washington, University of Cologne, Chiba University, and Yunnan University developed an organic ink for printable electronics that doesn't need to be doped for good conductivity. "We normally dope our organic polymers to improve their conductivity and the device performance. The proces... » read more

System Bits: Aug. 27
By Jeff Dorsch - 27 Aug, 2019 - Comments: 0

A ring of 18 carbon atoms Scientists at IBM Research – Zurich and Oxford University write about allotropes of carbon – the many versions of atomic carbon formations, such as diamonds and graphite. “Carbon, one of the most abundant elements in the universe, can exist in different forms - called allotropes - giving it completely different properties from color to shape to hardness. For... » read more

System Bits: April 30
By Jeff Dorsch - 30 Apr, 2019 - Comments: 0

Future batteries could use a graphene sponge Researchers at Sweden’s Chalmers University of Technology devised a porous, sponge-like aerogel, made of reduced-graphene oxide, to serve as a freestanding electrode in the battery cell. This utilization has the potential to advance lithium sulfur batteries, which are said to possess a theoretical energy density about five times greater than lithi... » read more

Manufacturing Bits: August 4
By Mark LaPedus - 04 Aug, 2015 - Comments: 0

Diamond metrology The U.S. Department of Energy’s Ames Laboratory is building a new instrument called an optical magnetometer. The system will help researchers understand the properties of new magnetic nanomaterials. The system, dubbed the NV-magnetoscope, makes use of the properties of nitrogen-vacancy (NV) centers in diamonds. According to researchers, diamonds have a flaw, or imperfect... » read more

5 Technologies To Watch
By Mark LaPedus - 23 Jul, 2015 - Comments: 0

The industry is developing a dizzying array of new technologies. In fact, there are more new and innovative technologies than ever before. And the list is countless. At least from my vantage point, I have come up with my own list of the top five technologies to watch in 2015 and beyond. They are listed in alphabetical order. (See below). Obviously, there are more than just five technologi... » read more

Manufacturing Bits: June 23
By Mark LaPedus - 23 Jun, 2015 - Comments: 0

Diamond shock waves For years, the industry has been exploring the use of diamonds for electronics applications. Diamonds could be used to reduce heat in electronic systems. In addition, diamond FETs are also intriguing. Diamond has a wide bandgap (5.45 eV), a high breakdown field (10MV/cm), and high thermal conductivity (22W/cmK). But it could take years before diamond FETs reach the mains... » read more

Manufacturing Bits: Nov. 25
By Mark LaPedus - 25 Nov, 2014 - Comments: 0

Direct-write diamond patterning Purdue University has devised a new technique that uses a pulsing laser to create synthetic nanodiamond films and patterns on a graphite substrate. The ability to pattern diamond surfaces could one day be used to make chips, biosensors and fuel cells. In the lab, researchers devised a multi-layered film, which includes a layer of graphite topped with a glass ... » read more

Manufacturing Bits: Oct. 29
By Mark LaPedus - 29 Oct, 2013 - Comments: 0

Diamond chips The optical transistor, which transports photons, holds great promise. Photons are not only faster than electrons, but they have less crosstalk. But optical transistors are also expensive and difficult to produce. In a possible breakthrough, the ICFO-Institute of Photonic Sciences has demonstrated a “nano-size” diamond that can act as an efficient optical switch. Researche... » read more

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