Search results for "gallium nitride"

Researchers recently found that light emitting diodes’ efficiency can be impeded by trace amounts of iron, which is a byproduct of LED production.That conclusion was the result of an international study involving KTH Royal Institute of Technology and other universities, including UC Santa Barbara, Rutgers University, the University of Vienna and the Center for Physical Sciences and Technology.

Two UltraCMOS 60GHz RF SOI switches have been announced by Peregrine Semiconductor. ThePE42525 and PE42625 extend Peregrine’s high frequency portfolio into frequencies previously dominated by gallium-arsenide (GaAs) technology. The SOI switches featuring fast switching, high isolation, low insertion loss and excellent linearity.

The availability of a series of plastic packaged PIN diode control products has been announced byMicrosemi Corporation, leveraging the company’s 50-year history supplying PIN diode products for challenging Radio Frequency (RF) power, small signal switching and receiver power limiting functions.

Texas Instruments (TI) has introduced a current-sense amplifier for in-line motor phase current measurement that improves overall motor efficiency, compared to existing current-sense amplifiers. The INA240 offers enhanced Pulse-Width Modulation (PWM) rejection for systems running at up to 80V to support a variety of applications such as motor control, solenoid control and power delivery systems.

For the first time, MIT physicists have observed a highly ordered crystal of electrons in a semiconducting material and documented its melting, much like ice thawing into water. The observations confirm a fundamental phase transition in quantum mechanics that was theoretically proposed more than 80 years ago but not experimentally documented until now.

Researchers at the University of California San Diego have demonstrated the world's first laser based on an unconventional wave physics phenomenon called bound states in the continuum. The technology could revolutionise the development of surface lasers, making them more compact and energy-efficient for communications and computing applications. The new BIC lasers could also be developed as high-power lasers for industrial and defense application...

A line of portable RF power amplifiers supported by a dedicated team of amplifier specialists has been introduced by ETL Systems. ETL’s range of RF power amplifiers offer high efficiency, broad frequency coverage and a compact form factor in a variety of power levels.

Electronic Specifier Editor Joe Bush spoke to Jim Witham, Chief Executive Officer of GaN Systems at electronica about the company’s offer of gallium nitride (GaN) power transistors and the role they are playing in the world’s energy reduction needs of the future.

For the first time, researchers have created LEDs on lightweight flexible metal foil.Engineers at The Ohio State University are developing the foil based LEDs for portable ultraviolet (UV) lights that soldiers and others can use to purify drinking water and sterilise medical equipment.In the journal Applied Physics Letters, the researchers describe how they designed the LEDs to shine in the high-energy "deep" end of the UV spectrum.

For decades hard chromium plating (HCP) has been the engineers’ choice for wear surfaces, tools and parts subject to harsh environments, but health and safety concerns and environmental constraints on the process demand an alternative. Heat treatment and hard coatings specialist the Wallwork Group strongly advocate Nitron CA – a form of chromium nitride (CrN) that is safer and produces a harder film with heat and chemical resistance t...