JSS Editors’ Choice article discusses AlGaN/GaN HEMTs

Image: “On the Radiation Tolerance of AlGaN/GaN HEMTs“

When it comes to putting technology in space, size and mass are prime considerations. High-power gallium nitride-based high electron mobility transistors (HEMTs) are appealing in this regard because they have the potential to replace bulkier, less efficient transistors, and are also more tolerant of the harsh radiation environment of space. Compared to similar aluminum gallium arsenide/gallium arsenide HEMTs, the gallium nitride-based HEMTs are ten times more tolerant of radiation-induced displacement damage.

Until recently, scientists could only guess why this phenomena occurred: Was the gallium nitride material system itself so inherently disordered that adding more defects had scant effect? Or did the strong binding of gallium and nitrogen atoms to their lattice sites render the atoms more difficult to displace?

The answer, according to scientists at the Naval Research Laboratory, is none of the above.

Examining radiation response

In a recent open access article published in the ECS Journal of Solid State Science and Technology entitled, “On the Radiation Tolerance of AlGaN/GaN HEMTs,” the team of researchers from NRL state that by studying the effect of proton irradiation on gallium nitride-based HEMTs with a wide range of initial threading dislocation defectiveness, they found that the pre-irradiation material quality had no effect on radiation response.

Additionally, the team discovered that the order-of-magnitude difference in radiation tolerance between gallium arsenide- and gallium nitride-based HEMTs is much too large to be explained by differences in binding energy. Instead, they noticed that radiation-induced disorder causes the carrier mobility to decrease and the scattering rate to increase as expected, but the carrier concentration remains significantly less affected than it should be.

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Image: CC0 Public Domain

A recently published article in Science discusses findings from a study done on the Thomson Reuters Journal Impact Factor (JIF).

The study concluded that “the [JIF] citation distributions are so skewed that up to 75% of the articles in any given journal had lower citation counts than the journal’s average number.”

The impact factor, which has been used as a measurement tool by authors and institutions to help decided everything from tenure to allocation of grant dollars, has come under much criticism in the past few years. One problem associate with impact factors, as discussed in the Science article, is how the number is calculated and can be misrepresented.

Essentially, the impact factor of a journal is the average number of times the journal’s article is cited over the past two years. However, this number becomes skewed when a very small handful of papers get huge citation numbers, while the majority of papers published get low or no citations. The study argues that because of this, the impact factor is not necessarily a reliable predictive measure of citations.

The second problem discussed in the study is the lack of transparency associated with the calculation methods deployed by Thomson Reuters.

But, no matter what happens with the JIF, as David Smith, academic publishing expert, says in the article, the true problem isn’t with the JIF, it’s “the way we thing about scholarly progress that needs work. Efforts and activity in open science can lead the way in the work.”

Learn more about ECS’s commitment to open access and the Society’s Free the Science initiative: a business-model changing initiative that will make our research freely available to all readers, while remaining free for authors to publish.

UPDATE: Thomson Reuters announced on July 11 in a press release that the company will sell its Intellectual Property & Science business to Onex and Baring Asia for $3.55 billion. Learn more about this development.

Image: Wikimedia Commons

Michael Faraday is a household name to those in the science, but the breadth and depth of his pioneering work is sometimes overlooked in lieu of modern day developments. In an effort to preserve and highlight the enormous impact of Faraday’s work, the UNESCO has announced that the pillar of electrochemistry’s notebooks (held by the Royal Institution) have been added to the UK Memory of the World Register.

The Memory of the World Register was established in 1992 and is a catalogue of the world’s most prized documentary and audiovisual heritage. Faraday’s notebooks will join the ranks of documents such as the Magna Carta and the Death Warrant of King Charles I.

The significance of notebooks lies in Faraday’s documentation and development of some of the most important physical and chemical discoveries of the 19th century. Many have referred to Faraday as one of the greatest experimentalists ever, especially due to his work on electricity that found expression in day-to-day technology. His work on electromagnetic rotations and induction transformed electrical devices as we know them, opening the door for the development of motors, transformers, and generators.

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We talk about open access a lot here at ECS, but how much do you really know about OA?

Test your knowledge by taking the Cognet OA quiz below!

Image: Wikimedia Commons

U.S. Vice President Joe Biden is making his voice heard in the quest for open access of vital scientific research.

After losing his son to cancer in May of 2015, Biden has been on a mission to accelerate cancer research in search of a cure. In order to make those leaps and bounds in prevention, diagnosis, and treatment, Biden is now pushing for an open access database to gain better understanding of the disease and advance innovation.

According to The Washington Post, Biden stated that the path toward breakthroughs relies upon increasing the number of researchers who can access data.

While the scope of ECS’s science may be different, our mission to accelerate innovation and open access to our research is the same.

ECS’s Free the Science initiative aims to make all of the research in our Digital Library free to publish and free to read – freeing the science for everyone.

Instead of putting money into the publishing industry, Free the Science is investing in research – allowing scientists to share their work with readers around the world and attracting more minds to think about how to solve some of our planet’s most pressing problems.

Learn more about Free the Science.

When eLife emerged in 2012, the biomedical journal aimed to be on-par with such competitors as Nature and Cell as far as content goes, but publish those papers at no cost to the author or reader.

After 1,800 papers four years of a complete open access model, eLife will get another boost from its funders to allow the journal to continue down its path of high standards and openness.

“eLife’s status in the field is rising quite quickly,” eLife editor Sjors Scheres told Nature News. “I liked the idea behind it — to make a high-impact journal completely driven by scientists, and open.”

ECS’s Free the Science initiative draws many parallels to eLife’s publication model. Much like eLife, ECS looks to maintain our rigorous peer-review process as we move toward making the ECS Digital Library completely open access.

Free the Science is an initiative that seeks to remove all fees associate with publishing and accessing our scientific content so scientists can share their research with readers around the world, allowing more minds to think about and solve problems.

Learn more about Free the Science and watch our video explaining why it has never been more important to advance our technical domain.

Please join us on Tuesday May 31 at 0700h for an invigorating morning run in support of ECS’s open access efforts.

The race winners (top male and top female) runner will each receive an Open Access Credit! This credit may be used to publish a paper as OA in either JES or JSS.

For more information on ECS publications, please visit the ECS Digital Library and the ECS online store and be sure to stop by the ECS Publications booth, located on the Sapphire Level of the San Diego Hilton Bayfront.

Looking forward to seeing you in San Diego!

New for the 229th ECS Meeting: Stop by the ECS Publication Booth for a chance to win 1 of 4 Open Access Credits! These credits may be used to publish your paper as OA in either JES or JSS.

Please stop by the ECS Publications Booth, located on the Sapphire Level (Fourth Floor) of the Hilton Bayfront any time during Registration Hours and drop off your business card to enter the raffle. ECS will be raffling off 4 Open Access credits during the 229th ECS meeting (each credit is worth $800)!

Questions? Please email oa@electrochem.org and we’ll see you in San Diego!

Deadline: June 15, 2016

ECS  is seeking to fill the position of Technical Editor of the Physical and Analytical Electrochemistry, Electrocatalysis, and Photoelectrochemistry Topical Interest Area for the Journal of The Electrochemical Society.

The Physical and Analytical Electrochemistry, Electrocatalysis, and Photoelectrochemistry (PAEEP) Topical Interest Area (TIA) includes fundamental aspects of interfacial science and electroanalytical chemistry. Specific topics include double layer theory and experiments, theoretical and experimental aspects of electrocatalysis, in situ spectroscopy, photoelectrochemical cells, scanning probe microscopy, and X-ray and electron microscopy methods.

The Journal of The Electrochemical Society (JES) has been in existence since 1902. Along with the ECS Journal of Solid State Science and Technology (JSS), JES and JSS provide unparalleled opportunities to disseminate basic research and technology results in electrochemical and solid state science and technology. JES and JSS each publish a minimum of 12 regular and focus issues each year. All ECS journals offer Author Choice Open Access.

ECS maintains 13 TIAs, and there is one Technical Editor for each TIA, supported by Associate Editors and an Editorial Advisory Board. Technical Editors for the ECS journals ensure the publication of original, significant, well-documented, peer-reviewed articles that meet the objectives of the relevant journal, and are within the scope of the Society’s TIAs.

Read the full description of the position and contact ECS Deputy Executive Director & Publisher Mary Yess if you would like to be considered or recommend someone for the position.