Chemical engineers have generated ultra-pure green light for the first time.

The new light-emitting diode paves the way for visibly improved color quality in a new generation of ultra-high definition displays for TVs and smartphones.

Electronic devices must first be able to produce ultra-pure red, blue, and green light in order to enable the next generation of displays to show images that are clearer, sharper, richer in detail, and with a more refined range of colors. For the most part, this is already possible for red and blue light; green light, however, has been at the limits of technology.

This is due mainly to human perception, since the eye is able to distinguish between more intermediary green hues than red or blue ones. “This makes the technical production of ultra-pure green very complex, which creates challenges for us when it comes to developing technology and materials,” says Sudhir Kumar of ETH Zurich, co-lead author of the study.

Ultra-pure green plays a key role in extending the color range, or gamut. Ultimately, new hues arise from the technical mixture of three base colors: red, blue, and green. The purer the base colors, the broader the range of hues a screen can display. The new LED is in line with 97 to 99 percent of the international standard for Ultra HD, Rec.2020. By comparison, the purest color TV displays currently available on the market cover on average only 73.11 to 77.72 percent; none exceeds 80 percent.

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The Journal of The Electrochemical Society (JES) Focus Issue on Oxygen Reduction and Evolution Reactions for High Temperature Energy Conversion and Storage is now complete, with 16 open access papers published in the ECS Digital Library.

“In this new and exciting era of distributed electricity generation, the modularity (sub-kW to 100 kW systems) with minimal efficiency loss at small scales makes solid oxide fuel cells (SOFCs) an exciting energy conversion technology,” the authors say in the focus issue’s preface. “This focus issue presents some of the latest research in understanding fundamental mechanisms of ORR and OER, and highlights new materials and concepts to achieve both greater performance and long-term durability.”

Read the full JES Focus Issue on Oxygen Reduction and Evolution Reactions for High Temperature Energy Conversion and Storage.

ECS would like to thank JES technical editor Tom Fuller and this focus issue’s guest editors Sean Bishop, Ainara Aguadero, and Xingbo Liu.

By: John Staser, division vice chair and Assistant Professor at Ohio University

As vice chair of the Industrial Electrochemistry and Electrochemical Engineering Division, it is with great pleasure that I introduce the summer 2017 edition of Interface.

The authors of the articles you are about to read all worked tirelessly, and we owe them acknowledgement and significant gratitude for putting this issue together. Without their contributions, we would not be able to deliver the consistent quality of content that you expect in Interface.

We as a division hope to highlight the diverse activities of our members.

In the following pages you will find articles authored by industrial and academic members, with foci ranging from environmental applications to mathematical modeling to large-scale industrial production of metals. Such breadth is evidence that our division’s activities, as has been the case in the past, are ever evolving.

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Past ECS President Krishnan Rajeshwar (left) awarding Barry Miller (right) the Edward Goodrich Acheson Award.

Is it possible for an awards program to go full circle? Here at ECS, the answer is a resounding YES!

Consider this: every two years in the fall, The Electrochemical Society honors an outstanding scientist or engineer with the Charles W. Tobias Young Investigator Award and similarly acknowledges the legacy of career achievement through our oldest prize, the Edward Goodrich Acheson Award. In each case, your peers are recognized for scientific contributions within our multi-disciplinary sciences and sustained service to our Society.

So what are we asking of you?

Nominate someone. They say it’s an honor to be nominated because it is.

Who are the best candidates?

The Tobias award applicant will be 40 years of age or younger (by April 1, 2018), whose professional background and Society volunteerism demonstrates a desire for future excellence in teaching and/or research and leadership within ECS. S/he will receive a framed certificate, a $5,000 prize and life membership. The 2016 recipient was Shirley Meng, Associate Professor of NanoEngineering at the University of California San Diego. Dr. Meng is currently the secretary of our largest division and a member of the sponsorship committee.

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Engineers have created a high-frequency electronic chip potentially capable of transmitting tens of gigabits of data per second, much faster than the fastest internet available today.

Omeed Momeni, an assistant professor of electrical and computer engineering at University of California, Davis, and doctoral student Hossein Jalili designed the chip using a phased array antenna system. Phased array systems funnel the energy from multiple sources into a single beam that can be narrowly steered and directed to a specific location.

“Phased arrays are pretty difficult to create, especially at higher frequencies,” Momeni says. “We are the first to achieve this much bandwidth at this frequency.”

The chip prototyped by Momeni and Jalili successfully operates at 370 GHz with 52 GHz of bandwidth. For comparison, FM radio waves broadcast between 87.5 and 108 MHz; 4G and LTE cellular networks generally function between 800 MHz and 2.6 GHz with up to 20 MHz of bandwidth.

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By: Laura Villano, Publications Intern

Laura Villano, Publications Intern (Click to enlarge.)

The purpose of an internship is to benefit both the student and organization. For that reason, I believe my internship at ECS was a success. I gained valuable experience, new skill sets, and many new acquaintances, as well as benefitted the Society. My name is Laura Villano and I am a senior marketing major at The College of New Jersey. During my time at ECS, I worked as an intern for Beth Craanen in the publications department. When I first applied, I was thrilled by the idea of working for a nonprofit and trying to make a difference. The more I learned about ECS and its Free the Science campaign, the more I found myself bragging to my family and friends about the company I interned for.

During my time in the publications department, I performed many marketing duties for ECS’s various publications. The beginning of my internship focused mostly on writing-based projects. I created blog posts and emails regarding subscriptions, journal focus issues, author information sessions, and several other various mini-marketing campaigns. The scope of my internship changed over my six months at ECS, and those duties slowly transformed into more digital advertising and graphic design projects. I transitioned into creating digital advertisements such as banner and carousel ads for the ECS website. I also created flyers about the content in the ECS Digital Library and subscription packages. If you are a member of ECS and attended the New Orleans meeting, you may have also seen some of the larger signage I created!

One of my favorite projects at ECS was helping to redesign the ECS Transactions logo and cover. Unfortunately, I had to leave the internship before the project was carried out but I am excited to see the final product in the future. I thoroughly enjoyed working on the projects with all of the ECS staff. Everyone was friendly and always willing to help.

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Tech Highlights was prepared by David Enos, Mara Schindelholz, and Mike Kelly of Sandia National Laboratories, Colm Glynn and David McNulty of University College Cork, Ireland, and Donald Pile of Rolled-Ribbon Battery Company. This article was originally published in Interface. Read the original article.

Spray Drying-Assisted Synthesis of Li₃VO₄/C/CNTs Composites for High-Performance Lithium Ion Battery Anodes

Published in the “Focus Issue of Selected Papers from IMLB 2016 with Invited Papers Celebrating 25 Years of Lithium Ion Batteries.” Graphite-based materials continue to be the most commonly used anode materials in commercial Li-ion batteries (LIBs). However, the practical application of graphite anodes in largescale LIBs may be hindered by safety issues arising from Li dendrite formation on the surface of the anode when cycling at fast rates. Read the full paper.

From: Yang Yang, Jiaqi Li, Dingqiong Chen, and Jinbao Zhao, J. Electrochem. Soc., 164, A6001 (2017).

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The Journal of The Electrochemical Society (JES) Focus Issue on Mathematical Modeling of Electrochemical Systems at Multiple Scales in Honor of John Newman is now available online, with 72 open access papers published in the ECS Digital Library.

“This focus issue of the Journal of The Electrochemical Society is devoted to the mathematical modeling of electrochemical systems across multiple scales,” the authors say in the focus issue’s preface. “It is dedicated to the work of Professor John Newman from UC Berkeley, who helped establish the field of modeling of electrochemical systems, and is aligned with a previous focus issue and regular symposium on multiscale modeling for electrochemical systems at ECS biannual meetings.”

Newman is a renowned battery researcher and developer of “The Newman Method” — a sophisticated approach to mathematically analyzing complex electrochemical problems. He clarified the physicochemical laws that govern the behavior of electrochemical systems and demonstrated how to use these laws to correctly formulate and solve problems associated with batteries, fuel cells, electrolyzers, and related technologies. He is the author of the book Electrochemical Systems.

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A team of engineers has found a simple, economical way to make a nano-sized device that can lift many times its own weight.

Their creation weighs 1.6 milligrams (about as much as five poppy seeds) and can lift 265 milligrams (the weight of about 825 poppy seeds) hundreds of times in a row.

Its strength comes from a process of inserting and removing ions between very thin sheets of molybdenum disulfide (MoS2), an inorganic crystalline mineral compound. It’s a new type of actuator—devices that work like muscles and convert electrical energy to mechanical energy.

The discovery—an “inverted-series-connected (ISC) biomorph actuation device”—appears in Nature.

“We found that by applying a small amount of voltage, the device can lift something that’s far heavier than itself,” says Manish Chhowalla, professor and associate chair of the materials science and engineering department of in the School of Engineering at Rutgers University.

“This is an important finding in the field of electrochemical actuators. The simple restacking of atomically thin sheets of metallic MoS2 leads to actuators that can withstand stresses and strains comparable to or greater than other actuator materials.”

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On October 4, during the Society’s 232nd meeting, ECS will be hosting its first ever ECS Data Sciences Hack Day. This event will be ECS’s first foray into building an electrochemical data sciences and open source community from the ground up.

On this episode of the ECS Podcast, we discuss the upcoming ECS Data Sciences Hack Day, the importance of dataset sharing, how open source software can transform the field, and the future of open science.

This episode’s guests include Daniel Schwartz, Boeing-Sutter Professor of Chemical Engineering and Director of the Clean Energy Institute at the University of Washington; David Beck, Director of Research with the eSciences Institute at the University of Washington; and Matthew Murbach, president of the University of Washington ECS Student Chapter.

Schwartz, Beck, and Murbach will be at the 232nd ECS Meeting this fall in National Harbor, Maryland participating in OpenCon and running the ECS Hack Day. There’s still time to register for both of these events.

Listen to the podcast and download this episode and others for free on Apple Podcasts, SoundCloud, Podbean, or our RSS Feed. You can also find us on Stitcher and Acast.