Enzyme-based sensors detect lactate levels in sweat

Image: Sergio Omar Garcia

It may be clammy and inconvenient, but human sweat has at least one positive characteristic – it can give insight to what’s happening inside your body. A new study published in the ECS Journal of Solid State Science and Technology aims to take advantage of sweat’s trove of medical information through the development of a sustainable, wearable sensor to detect lactate levels in your perspiration.

“When the human body undergoes strenuous exercise, there’s a point at which aerobic muscle function becomes anaerobic muscle function,” says Jenny Ulyanova, CFD Research Corporation (CFDRC) researcher and co-author of the paper. “At that point, lactate is produce at a faster rate than it is being consumed. When that happens, knowing what those levels are can be an indicator of potentially problematic conditions like muscle fatigue, stress, and dehydration.”

Utilizing green technology

Using sweat to track changes in the body is not a new concept. While there have been many developments in recent years to sense changes in the concentrations of the components of sweat, no purely biological green technology has been used for these devices. The team of CFDRC researchers, in collaboration with the University of New Mexico, developed an enzyme-based sensor powered by a biofuel cell – providing a safe, renewable power source.

Biofuel cells have become a promising technology in the field of energy storage, but still face many issues related to short active lifetimes, low power densities, and low efficiency levels. However, they have several attractive points, including their ability to use renewable fuels like glucose and implement affordable, renewable catalysts.

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Nomination Deadline: September 1, 2016

The ECS Energy Technology Division invites you to nominate qualified candidate(s) for the following division awards.

Energy Technology Division Research Award: established in 1992 to encourage excellence in energy related research and to encourage publication in the Journal of The Electrochemical Society.

Energy Technology Division Supramaniam Srinivasan Young Investigator Award: established in in 2011 to recognize and reward an outstanding young researcher in the field of energy technology.

Energy Technology Division Graduate Student Award: established in 2012 to recognize and reward promising young engineers and scientists in fields pertaining to this Division.

Award recipients will all be asked to present a lecture to the Energy Technology Division at the 231st ECS biannual meeting in May/June, 2017 in New Orleans, LA. Explore the full award details on the ECS web site, paying keen attention to the specific application requirements prior to completing the electronic application.

P.S. Energy Technology Division Awards are part of ECS Honors & Awards Program, one that has recognized professional and volunteer achievement within our multi-disciplinary sciences for decades. Learn more about various forms of ECS recognition and those who share the spotlight as past award winners.

Image: MIT

New lithium-oxygen battery technology proposed by researchers from MIT, Argonne National Laboratory, and Peaking University, promises a scalable, cheap, and safe option in energy storage.

There is immense promise for lithium-oxygen batteries in such applications as electric cars and portable electronics. In fact, they are between five and 15 times more efficient than lithium-ion batteries in transportation applications due to their high energy output potential in proportion to their weight.

But there have been complications in developing and especially implementing these batteries in the marketplace. Primarily, they’ve been known to waste energy and degrade quickly.

But this new study, co-authored by ECS member and past IMLB chair Khalil Amine, states that the theoretical potential for lithium-oxygen batteries could be met while overcoming some of the biggest barriers prohibiting the technology.

Once of the primary focuses of the group was overcoming the mismatch in voltages that happens in charging and discharging the battery. Because the output voltage is more than 1.2 volts lower that that used to charge, there is typically a significant power loss.

“You waste 30 percent of the electrical energy as heat in charging,” says Ju Li, professor at MIT and co-author of the paper. “It can actually burn if you charge it too fast.”

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Attending PRiME 2016 in Honolulu this October? Don’t forget to register for one of the most worthwhile and celebrated events of the meeting—the student mixer!

One of the most beneficial things you can do at PRiME 2016 is make connections—meet others with similar scientific interests, experience, and professional goals. The student mixer provides the perfect environment for you to do just that.

Attended by distinguished guests, the student mixer is a must for all student attendees. Featuring light food and refreshments, the event offers students an excellent opportunity to network and socialize with industry experts, fellow students, and like-minded thinkers within a comfortable, low-pressure setting.

The PRiME 2016 Student Mixer will be held on Monday, October 3 in Tapa Ballroom 3 from 1900-2100h.

This is a ticketed event. Tickets cost $5.00 for all individuals and may be purchased online or on-site at registration on a first-come, first-served basis. If you have already registered for PRiME 2016 and wish to attend the student mixer, please log back in to your account and register today! View PRiME 2016 registration information.

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Overcoming barriers in scholarly publishing

In 1995, Forbes published an article entitled, “The Internet’s first victim?” In the article, author John Hayes predicted the world of commercial, for-profit scholarly publishing would suffer under the thumb of the internet and begin the slow process of fizzling out for lack of ability to turn a profit.

Turns out he was wrong.

Commercial scientific publishing has adapted to the times, becoming a multi-billion dollar industry; a $25.2 billion industry to be exact.

The rise of the for-profits

According to CBC News, the top for-profit scientific publishers report profit margins of nearly 40 percent, making some of those margins even higher than that of companies like Apple and Google.

The divide between ECS publications and that of top commercial publishers has deep roots. In the early days of scientific publishing, most journals came out of nonprofit scientific societies like ECS. However, the digital age changed things. It did not stifle the commercial publisher as Hayes thought, instead it hurt the scientific societies. Because the cost to make the switch from print to digital was so high, many societies sold their journals to large, for-profit publishers.

The top five largest, for-profit, academic publishers now publish 53 percent of all scientific papers in natural and medical sciences, but ECS still remains as one of the last independent scientific society publishers, and is still committed to the initial vision of the journals: to disseminate scientific research to the broadest possible audience with the fewest barriers.

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Congratulations to the University of South Carolina for being named ECS’s Outstanding Student Chapter of 2016!

Members of the University of South Carolina Student Chapter with Dr. Thomas F. Fuller

The award, consisting of a recognition plaque, $1,000 toward student chapter funding, and chapter recognition in Interface, will be presented to the University of South Carolina at PRiME 2016 in Honolulu, Hawaii.

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Image: CC0 Public Domain

Two researchers from Cornell University recently put forward research describing their development of an aluminum-based electrochemical cell that has the potential to capture carbon emissions while simultaneously generating electricity.

Globally, carbon dioxide is the number one contributor to harmful greenhouse gas emissions. These emissions accelerate climate change, leading to such devastating effects as rising sea levels that can dislocate families and radical local climates that hurt food production levels.

(MORE: Read past meeting abstracts by co-author of the research, Lynden A. Archer, for free.)

While there have been efforts to reduce the amount of carbon pumped into the atmosphere, the current levels are still far too high. Because of this, some researchers – including the duo from Cornell – have turned their attention to capturing carbon.

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Image: CC0 Public Domain

The transportation industry is evolving, and Tesla CEO Elon Musk is a driving force behind that evolution.

Ten years ago, Musk first outlined his master plan, which included the development of affordable electric cars (including the recently released Tesla Model 3). Now, Musk has released his “Master Plan, Part Deux,” which shifts emphasis from the development of electric cars to the implementation of new (sometimes controversial) autonomous driving technology. Not only does Musk hope to apply this technology to Tesla vehicles, but also expand to self-driving buses and trucks. This could mean trucks on autopilot that could lead to “a substantial reduction in the cost of cargo transportation” in long trips.

According to Musk, the purpose of these plans is to “[accelerate] the advent of sustainable energy, so that we can imagine far into the future and life is still good. That’s what ‘sustainable’ means. It’s not some silly, hippy thing – it matters for everyone.”

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Image: CC0 Public Domain

Grass could become an affordable source of clean, renewable energy, according to a team of researchers from Cardiff University.

A recently published study states that significant amounts of hydrogen could be extracted from grass with the help of sunlight and a cheap catalyst.

This from Cardiff University:

It is the first time that this method has been demonstrated and could potentially lead to a sustainable way of producing hydrogen, which has enormous potential in the renewable energy industry due to its high energy content and the fact that it does not release toxic or greenhouse gases when it is burnt.

Read the full article.

“Hydrogen is seen as an important future energy carrier as the world moves from fossil fuels to renewable feedstocks,” says Michael Bowker, co-author of the study, “and our research has shown that even garden grass could be a good way of getting hold of it.”

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Does this summer feel a little warmer than usual? Well, that’s because it is.

According to NASA, the first six months of 2016 have been the warmest half-year ever recorded. Pair that with the smallest monthly Artic Sea ice extent in that same period of time, and these two indicators give a grim image of the accelerating pace of climate change.

In a report, NASA states that the global temperature has increased by 2.4°F since record keeping began in the 1800s. Additionally, Artic Sea ice has been declining at a rate of 13.4 percent per decade.

“It has been a record year so far for global temperatures, but the record high temperatures in the Arctic over the past six months have been even more extreme,” says Walt Mkeier, a sea ice researcher with NASA. “This warmth as well as unusual weather patterns have led to the record low sea ice extents so far this year.”

If climate continues down this same path, the effects could be devastating for the world. However, electrochemical and solid state science may have some of the answers to mitigate climate change.

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