Biography:

One of their most recent publications is EditorialSi takes SiGe, GaAs & InP into its roadmap. Which was published in journal III-Vs Review.

More information about Gail Purvis research including statistics on their citations can be found on their Copernicus Academic profile page.

Gail Purvis's Articles: (23)

EditorialSi takes SiGe, GaAs & InP into its roadmap

AbstractPondering Roadmaps in July unfairly overlooked the US National Institute of Standards’ efforts through its Semicon-ductor Electronics division, where it has raised a Roadmap for Compound Semiconductors (ITRCS) Bulletin Board.

Book Review‘Why some companies dominate and others fail’

AbstractWhen Kevin Kennedy, COO for Openwave Systems (on the boards of Quantum Corp, JDS Uniphase and formerly with both Cisco and Bell Laboratories) turned his agile mind to writing a joint book with the former VP operations and director of human resources at Stanford University, Mary Moore, it comes as no surprise that “Going the Distance” focuses on the high technology sector and definitely goes its own distance.

Features, Reviews and ReportsThe ‘idiom’ of InP

AbstractIndium phosphide may be among the younger of the compound materials, but dedicated work is moving its attributes firmly into the market. ASIP Inc's merger with ThreeFive Photonics back in November; Bookham's opening of its InP line at Caswell in March, alongside InP fab, Kamelian's successful survival in the telecoms downturn, would all seem to indicate that a growing variety of InP devices are moving towards what is jokingly referred to as, ‘idiom’ phosphide status.

News Update: Markets & BusinessFund award winners & spenders

Optics, medicine, RF, radar, power and new equipment were all in the latest NIST awards that will help boost both compound and nano sectors. Compound equipment manufacturers and device designers, as well as totally new applications sectors for the compound industry foreshadows where technology is moving.

Market Analysis: Indium PhosphideStrategies for survival

February is the month for valentines and much InP news, which emerges from the 1Q optoelectronic and telecom conferences and exhibitions. So a quick scan for InP ‘news’ in early 2005 threw up a dozen contenders from some 36 movers and shakers.

Markets & Business News UpdateWIDGAP and FoNE Europe

Europe has never had superstate group defence funding for electronic materials, but at last it is building roadmaps and researching nano basics under Framework 6. Perhaps, without the military preoccupations of the US, this approach could produce some interesting findings, not to mention a more scenic materials and device route than the alternate, money intensive, deadline ‘deliverables’ motorway.

Market Analysis: Applications: Viral detectionQDs fast detection of respiratory viral infections

Respiratory syncytial virus (RSV) sends about 120,000 children to the hospital in the US each year. Although it is only life-threatening in one case out of every 100, it infects virtually all children by the age of five. RSV also attacks the elderly, causing some 17,000 to 18,000 deaths yearly. Individuals with impaired immune systems are alsohighly susceptible. Worldwide, the virus causes about 1m deaths annually.

Technical Feature: Laser diodesMBE makes CW violet laser

In January last year, Sharp Laboratories Europe produced the first blue-violet lasers by MBE on sapphire-based substrate. This year, the breakthrough is the demonstration of continuous wave operation of violet lasers by MBE grown on GaN substrates. And next year? Dr Jon Heffernan and his Oxford team are by then likely to reduce operating voltage by improving p-type doping and so demonstrate the long lifetimes required for commercial lasers.

Profiles: Manufacturer: HelioVolt$8m for commercial CIS

HelioVolt Corporation closed $8m in a Series A venture funding in June from New Enterprise Associates. “We can shorten photovoltaic manufacturing time and thermal budget by a factor of ten to 100. This is the first truly practical technology to enable buildings to produce their own power.” said Billy J Stanbery, founder and CEO of HelioVolt and a solar energy pioneer.

Research Analysis: Molecular Beam EpitaxyMBE - great box of tricks or mass production tool?

If anyone ever wanted to know what it is that makes molecular beam epitaxy such a magic process, they need look no futher than the web page for the Max Planck Institute for Solid State Research (http://www.fkf.mpg.de/mbe/).

Technical Development: GaNChanging the crystal face of gallium nitride

Professor Shuji Nakamura's office, at the University of Santa Barbara, overlooks the splendid backdrop of the Santa Ynez mountains. But it is questionable whether he even notices them in his energetic determination to make that brittle, obdurate stuff, gallium nitride, into this century's highest efficiency materal for lighting purposes. The route that he and his impressive team are taking, is a dimensional approach, the way of non-polar and semi-polar orientations applied to gallium nitride films, LEDs and laser diodes.

Device Focus: IEDM big top opensSilicon under pressure: even GaN takes stick

IEDM 2005 will take place in Washington, DC, in early December. It is one of those great shows, a spell-binding, amazing silicon circus. In the big top are packed the pressured performers, having to master new acts of ever increased agility, stability and endurance. Silicon shows the strain in its need of other material assistance. And a host of side shows, big dippers, swings and roundabouts, put compound semiconductors and MEMS devices through paces that lend lustre to the whole performance.

Company Profile: VishayVishay invests in compound growth

Vishay has historically been a manufacturer of passive components. In the last few years, through company acquisitions, it has expanded its portfolio of actives (mostly silicon). But, with a recent acquisition, it has also built up its compound capabilities.

Technical Feature: PhotovoltaicsCompounds Chase the Sun

“CIGS?” queried an old-hand compound man. “Copper, gallium, indium, selenide.” “Oh, that old white hope,” was his reply. Significantly, he didn't use the word ‘elephant' for, as the compound sector knows, CIGS has undergone a makeover to become among the hottest photovoltaic (PV) subjects. It's certainly a darling in the investment community. And it's not alone. Other compound materials such as that stalwart of the space fraternity - gallium; close silicon affiliate germanium, and cadmium selenide or telluride, not to mention titanium, are all mooted as next PV generation materials.

Technical Feature: Company profileAZZURRO provides GaN-on-Si wafers for 1kV device

Last year in August, AZZURRO Semicon ductors came out of stealth mode and stirred considerable interest in the compound community, when CTO Dr Armin Dadgar gave a presentation on the epi-wafer foundry's successful growth of thick, crack-free 150mm GaN on Si-substrates at the ICNS conference in Bremen. Now the company is on the eve of being able to take the credit for its epi-wafers having broken the barrier to GaN-on-Si devices, achieving more than 1kV breakdown voltage. These devices have been created for an industry customer by MicroGaN of Ulm.

Conference Report: EM Remote SensingEMRS – problems, progress and hero devices

It's an unusual sight to see conference delegates queuing in sunlight outside the Scottish Edinburgh Conference Centre. But the joint Electromagnetic Remote Sensing and Systems Engineering for Autonomous Systems meeting caused just such a logjam in processing its first-day's attendance of 550 delegates. It was also an unusual conference being the first such joint airing of disparate, but defence related research developments. And not the smallest part of its charm was that rather than featuring ‘hero’ devices and development; both the problems and progress were aired.

Technical Feature: Medium Wave IRMWIR centre field in R&D

Infrared glows out of a wide range of current news, from the capabilities of the Spitzer Space Telescope for directly detecting cool T dwarfs, to synthetic and enhanced vision to improve pilot's awareness, or the art disclosure of a gauze-clad, hand-clenched, Mona Lisa, amazingly bonneted and veiled. Now judging by current R&D spending on medium wave infrared (MWIR) expect this part of the IR technology spectrum to start making a serious impact in primarily instrumentation and sensor fields, as well as the health and environment markets. The routes to developing MWIR devices will vary, but research is focused on the market pull and development push to low-cost, uncooled devices.

Technical Feature: ChalcogenidesChalcogenides amass off-stage

Compound materials have made the headlines in recent semiconductor developments, which includes the Ohio-based researchers' new magnetic-semiconductor bi-layer of GaN and MnGa for spin control (which will operate at room temperatures), and to Intel and UCSB's development of a hybrid chip of light-emitting InP combined with silicon. But at this December's IEDM, one spotlight is on chalcogenide memories or phase change materials. Judging by patent activity, and some of the developments in 2006, this could become another ‘must have’ characteristic for advanced memories, though dates for wide availability range from 2008 to 2010.

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