Author Archives: steve bush

Optical processing glass integrated with CMOS

Australian scientists are combining high-speed chalcogenide glass optical processing with silicon CMOS. “We integrated a novel non-linear glass into an industrially scalable CMOS compatible platform. We maintained the key advantages of both the silicon and the glass, and made a functional and efficient ultra-compact optical circuit,” said Dr Alvaro Casas Bedoya who leads photonics fabrication ...

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Another crack the high-temperature superconductor walnut

Scientists from the US Brookhaven National Laboratory and Yale University have discovered surprising behaviour amongst electrons in high-temperature superconductors (HTS). “Our discovery challenges a corner-stone of condensed matter physics,” said Brookhaven Lab physicist Jie Wu. “These electrons seem to spontaneously ‘choose’ their own paths through the material – a phenomenon in direct opposition to expectations.” ...

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Low-cost surface treatment makes better solar cells

Osaka University has created front and back coatings to improve the efficiency of silicon solar cells, without resort to expensive vacuum treatment. The front coating is anti-reflective – a component of almost all solar cells – and created using a wet process based on ‘surface structure chemical transfer’ (SSCT), using it to fabricate so-called ‘black ...

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Li-ion thermal knowledge pooled into one place

US researchers have collated the temperature performance of different Li-ion cell technologies with a view to improving batteries. “People have not looked that studiously at temperature constraints. We searched hard to find one paper that talks about all the problems at the same time and what all the individual components experience at extreme temperatures, and ...

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Electromagnetic gun readies for war

The US Navy’s electromagnetic rail-gun is out of the laboratory and ready for field demonstrations at the Naval Surface Warfare Center Dahlgren, Virginia. Rail guns, which until now have been research tools, are a form of linear motor which accelerate objects to very high velocity using a combination of magnetic and electric fields. Testing is ...

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Raspberry Pi based product qualification programme for professional users

Raspberry Pi has introduced an official Raspberry Pi qualification programme for organisations building Raspberry Pi single-board computers into products. “Raspberry Pis are now essential components of everything from washing machines to underwater exploration vehicles,” said the Foundation. “We love seeing these commercial applications, and are committed to helping bring Raspberry Pi-powered products to market.” Worked with UL ...

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Vishay trench Schottkys cut voltage drop

Vishay has expanded its surface-mount ‘TMBS’ trench MOS Barrier Schottky rectifiers with 10 1A and 2A devices in the eSMP series MicroSMP (DO-219AD) package. “Providing space-saving alternatives to Schottky rectifiers in the SOD123W, the Vishay General Semiconductor devices feature reverse voltages from 45 to 150V and include the industry’s first 2 A TMBS rectifiers in the MicroSMP ...

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Diodes cuts Schottky forward drop

Using an deep-trench process, the SDT series of Schottky diodes from Diodes is claimed to deliver superior performance to planar-type Schottky diodes. “The initial family of 29 devices provides the blocking, free-wheeling, fly-back and other diode functions commonly found in a wide range of applications, such as ac-dc chargers, ac-dc adapters, dc-dc up conversion, dc-dc ...

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Silicon Labs puts Bluetooth Mesh on old hardware with new software

With the official release of Bluetooth mesh networking, Silicon Labs is implementing it on existing silicon with three three software packages. Bluetooth mesh is a protocol that will run on top of any Bluetooth 4.0 device. It does not need Bluetooth 5 hardware, Silicon Labs marketing manager Mikko Savolainen told Electronics Weekly. It relies completely on ...

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Two PLLs and a VCO in one chip for RF and IF synthesis

CML Microcircuits is offering two phase-locked loops and a VCO in one chip. Called CMX979 is designed to implement an RF synthesiser at the same time as an IF synthesiser. The RF synthesiser operates over 2.7-3.6GHz with a integrated VCO and PLL, and is capable of operating between 338MHz and 3.6GHz via a configurable output frequency ...

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