A potential breakthrough for production of superior battery technology — ScienceDaily


Micro supercapacitors may revolutionise the best way we use batteries by growing their lifespan and enabling extraordinarily quick charging. Producers of every little thing from smartphones to electrical vehicles are subsequently investing closely into analysis and improvement of those digital parts. Now, researchers at Chalmers College of Expertise, Sweden, have developed a way that represents a breakthrough for a way such supercapacitors may be produced.

“When discussing new applied sciences, it’s straightforward to neglect how vital the manufacturing methodology is, in order that they will truly be commercially produced and be impactful in society. Right here, we’ve got developed strategies that may actually work in manufacturing,” explains Agin Vyas, doctoral scholar on the Division of Microtechnology and Nanoscience at Chalmers College of Expertise and lead writer of the article.

Supercapacitors encompass two electrical conductors separated by an insulating layer. They will retailer electrical vitality and have many optimistic properties in comparison with a traditional battery, comparable to far more fast charging, extra environment friendly vitality distribution, and a a lot higher lifespan with out lack of efficiency, as regards to the cost and discharge cycle. When a supercapacitor is mixed with a battery in an electrically powered product, the battery life may be prolonged many instances -up to 4 instances for industrial electrical automobiles. And whether or not for private digital gadgets or industrial applied sciences, the advantages for the tip client may very well be big.

“It could in fact be very handy to have the ability to shortly cost, for instance, an electrical automotive or not have to alter or cost batteries as typically as we at present do in our smartphones. However it will additionally signify an excellent environmental profit and be far more sustainable, if batteries had an extended lifespan and didn’t have to be recycled in difficult processes,” says Agin Vyas.

Manufacturing an enormous problem

However in apply, in the present day’s supercapacitors are too giant for a lot of functions the place they may very well be helpful. They have to be about the identical measurement because the battery they’re linked to, which is an impediment to integrating them in cellphones or electrical vehicles. Subsequently, a big a part of in the present day’s analysis and improvement of supercapacitors is about making them smaller — considerably so.

Agin Vyas and his colleagues have been working with creating ‘micro’ supercapacitors. These are so small that they will match on the system circuits which management numerous features in cellphones, computer systems, electrical motors and nearly all electronics we use in the present day. This answer can be referred to as ‘system-on-a-chip’.

Some of the vital challenges is that the minimal models have to be manufactured in such a manner that they change into appropriate with different parts in a system circuit and might simply be tailor-made for various areas of use. The brand new paper demonstrates a producing course of during which micro-supercapacitors are built-in with the most typical manner of producing system circuits (often known as CMOS).

“We used a way often known as spin coating, a cornerstone method in lots of manufacturing processes. This enables us to decide on totally different electrode supplies. We additionally use alkylamine chains in decreased graphene oxide, to point out how that results in a better charging and storage capability,” explains Agin Vyas.

“Our methodology is scalable and would contain decreased prices for the manufacturing course of. It represents an excellent step ahead in manufacturing know-how and an vital step in the direction of the sensible software of micro-supercapacitors in each on a regular basis electronics and industrial functions.”

A way has additionally been developed for producing micro-supercapacitors of as much as ten totally different supplies in a single unified manufacturing course of, which implies that properties may be simply tailor-made to swimsuit a number of totally different finish functions.

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Supplies offered by Chalmers College of Expertise. Unique written by Karin Wik. Notice: Content material could also be edited for fashion and size.

5 Technology Documentaries Streaming Now | NOVA



Tech + EngineeringTech & Engineering

5 episodes exploring the revolution and ethics of know-how.

Hiya, NOVA followers! We perceive that lots of it’s possible you’ll be spending extra high quality time at residence than common. And, as faculties throughout the nation stay closed, fostering scholar studying at house is a high precedence.

Within the upcoming weeks, we’ll be sharing collections of a few of our favourite NOVA movies—all organized by topic to make bingeing, studying, and leisure as straightforward as potential for science lovers of all ages.

Have you ever ever puzzled in regards to the ethics of genetic engineering or thought-about whether or not autonomous autos will sometime take over our roads? Prepare: The topic of this assortment is “Expertise.”

Decoding da Vinci (2019)

Leonardo da Vinci was a Renaissance genius. Not solely did he paint masterpieces of artwork, however he was an obsessive scientist and inventor, dreaming up advanced machines centuries forward of his time, together with parachutes, armored tanks, hold gliders, and robots. On the five hundredth anniversary of Leonardo’s demise, with the assistance of biographer Walter Isaacson, NOVA investigates the secrets and techniques of Leonardo’s success. How did his scientific curiosity, from dissections of cadavers to research of optics, form his genius and assist him create maybe probably the most well-known portray of all time, the “Mona Lisa”?

Rise of the Rockets (2019)

Rockets have gotten cheaper and extra highly effective than ever earlier than due to beautiful new applied sciences. As firms like SpaceX and Virgin Galactic make area extra accessible, and NASA returns to crewed spaceflight, a brand new period of area exploration appears to be on the horizon. However will this seeming rocket Renaissance develop into extra than simply hype? NOVA explores the most recent rocket applied sciences and the rising position personal residents could have in area.

Look Who’s Driving (2019)

After years of anticipation, autonomous autos are actually being examined on public roads around the globe. As formidable innovators race to develop what they see as the following high-tech pot of gold, some consultants warn there are nonetheless daunting challenges forward, together with the way to practice synthetic intelligence to be higher than people at making life-and-death choices. How do self-driving automobiles work? How shut are we to large-scale deployment of them? And can we ever have the ability to belief AI with our lives?

College of the Future (2016)

In a brand new age of knowledge, fast innovation, and globalization, how can we put together our youngsters to compete? As soon as the envy of the world, American faculties are actually in bother. Check scores present our youngsters lag far behind their friends from different industrialized international locations, and because the divide between wealthy and poor grows wider, the objective of getting all youngsters prepared for school and the workforce will get tougher by the day. How can the most recent analysis assist us repair schooling in America? Can the science of studying—together with new insights from neuroscientists, psychologists, and educators—reveal how youngsters’ brains work and inform us which strategies are more than likely to interact and encourage rising minds? What position ought to know-how play within the classroom? Academics, college students, dad and mom, and scientists take heart stage as NOVA explores a brand new imaginative and prescient for the “College of the Future.”

NOVA Wonders: Can We Make Life? (2018)

“It is alive!” Since Dr. Frankenstein spoke these well-known phrases, we have been alternately enthralled and terrified by the thought of making life within the lab. Now, a revolution in genetic engineering and thrilling improvements in artificial biology are bringing that dream—or nightmare, because the case could also be—nearer to actuality. New instruments permit researchers to make use of cells to create their very own DNA and edit it into current genomes with extra ease and fewer price than ever earlier than. Together with renewed hopes for treating some genetic ailments, there’s severe discuss of utilizing the latest applied sciences to convey long-extinct animals again from the lifeless – just like the workforce hoping to resurrect the woolly mammoth. Science fiction is shortly turning into science truth. One other daring genetic experiment to bioengineer animals might stop Lyme illness. However the energy to make life comes with deep moral questions. What are the potential rewards—and risks—of tinkering with nature? NOVA Wonders explores the advantages and the burden of threat surrounding the controversial new know-how.

New state-of-the-art technology collects a unique time series from methane seeps in the Arctic — ScienceDaily


A brand new publication in Ocean Science hyperlinks cutting-edge know-how with developments in our understanding of the atmosphere and local weather, highlighting and constraining uncertainties in present methane estimates from methane seepage websites within the Arctic.

On the forefront of ocean observatory applied sciences is the Ok-Lander — an revolutionary ocean observatory outfitted with many ocean sensors, designed in collaboration between the water column group at CAGE led by Bénédicte Ferré and Kongsberg Maritime. This observatory was designed to observe methane launch from the seabed to the water column beneath difficult environments, offering invaluable info on temporal and spatial variability of pure methane launch that may doubtlessly attain the ambiance.

A brand new research revealed in Ocean Science performed by CAGE PhD candidate Knut Ola Dølven and co-authors presents time-series knowledge from two methane seep websites offshore western Svalbard, within the Arctic. These distinctive outcomes present excessive variability each on hourly and seasonal time-scales and describe the interconnectivity between methane seepage and the ocean.

“The size and placement are what makes these time-series distinctive, as they reply previous and lift new questions associated to this variability and the way we are able to higher constrain it in future emission estimates.” Says Knut Ola Dølven, Dølven, who performed this research as a part of his Ph.D. at CAGE.

Areas of intense methane seepage

In 2015 and 2016, two Ok-Lander observatories have been deployed over distinct intensive methane seepage websites west of Prins Karls Forland, the place 1000’s of gasoline bubble streams originating from the seafloor have been noticed.

Regardless of the information that methane seep websites doubtless expertise excessive temporal and spatial variability, our understanding of the quantity, distribution, and launch of methane within the Arctic Ocean has largely relied on research that have been undertaken within the late spring to early autumn as a result of higher ice and climate circumstances. Till now.

Long run, steady monitoring of methane launch

Utilizing knowledge from the Ok-Lander, Dølven and co-authors processed a singular lengthy time-series that spanned 10 months, measuring methane, carbon dioxide and bodily parameters at every website. These measurements offered vital insights into the short-term and differences due to the season of methane emissions and concentrations.

“It was fascinating to watch that, regardless of the very excessive short-term variability in methane launch, the supply of methane emission appeared to be comparatively unchanged all through the 10-month deployment. This has robust implications on future interpretations of methane focus in seep areas.” Says Dølven.

There may be additionally elevated potential for methane launch to the ambiance throughout the fall and winter, if seepage persists, as a result of weaker water column stratification (elevated mixing of the layers within the ocean).

Whereas seabed seepage is taken into account a minor pure supply of atmospheric methane, there are giant uncertainties associated to the present and predicted emission estimates. Dølven and co-authors have been, due to this fact, capable of spotlight and constrain uncertainties associated to variability in methane stock estimates from seabed methane seepage.

Ok-Lander know-how in future analysis functions

This work highlighted the profitable cooperation between maritime trade and analysis groups, offering innovative know-how for monitoring methane to assist clarify questions on oceanic greenhouse gasoline emissions. That is the primary long run knowledge collection offering distinctive multi-sensor knowledge on methane launch and different ocean bodily and chemical circumstances within the Arctic.

“This infrastructure will play a significant position in understanding components controlling methane emissions not solely in Arctic, as highlighted on this research, however in different areas worldwide as properly. Methane seepage knowledge together with different parameters measured by the Ok-Lander will assist in estimating current and future world methane budgets in our oceans” says Bénédicte Ferré, the staff chief for WP4 ‘Gasoline within the Water Column’ and EMAN7, and the liable for the event, acquisition and knowledge evaluation associated to the Ok-Lander.

‘Unabated’ adoption of technology could lead to over-treatment, excessive costs — ScienceDaily


Analyzing breast-cancer tumors with synthetic intelligence has the potential to enhance healthcare effectivity and outcomes. However medical doctors ought to proceed cautiously, as a result of related technological leaps beforehand led to increased charges of false-positive exams and over-treatment.

That is based on a brand new editorial in JAMA Well being Discussion board co-written by Joann G. Elmore, MD, MPH, a researcher on the UCLA Jonsson Complete Most cancers Middle, the Rosalinde and Arthur Gilbert Basis Endowed Chair in Well being Care Supply and professor of medication on the David Geffen College of Drugs at UCLA.

“And not using a extra strong strategy to the analysis and implementation of AI, given the unabated adoption of emergent expertise in medical apply, we’re failing to study from our previous errors in mammography,” the JAMA Well being Discussion board editorial states. The piece, posted on-line Friday, was co-written with Christoph I. Lee, MD, MS, MBA, a professor of radiology on the College of Washington College of Drugs.

A type of “previous errors in mammography,” based on the authors, was adjunct computer-aided detection (CAD) instruments, which grew quickly in recognition within the subject of breast most cancers screening beginning greater than 20 years in the past. CAD was authorized by the FDA in 1998, and by 2016 greater than 92% of U.S. imaging services have been utilizing the expertise to interpret mammograms and hunt for tumors. However the proof confirmed CAD didn’t enhance mammography accuracy. “CAD instruments are related to elevated false constructive charges, resulting in overdiagnosis of ductal carcinoma in situ and pointless diagnostic testing,” the authors wrote. Medicare stopped paying for CAD in 2018, however by then the instruments had racked up greater than $400 million a yr in pointless well being prices.

“The untimely adoption of CAD is a premonitory symptom of the wholehearted embrace of emergent applied sciences prior to completely understanding their influence on affected person outcomes,” Elmore and Lee wrote.

The medical doctors recommend a number of safeguards to place in place to keep away from “repeating previous errors,” together with tying Medicare reimbursement to “improved affected person outcomes, not simply improved technical efficiency in synthetic settings.”

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Supplies offered by College of California – Los Angeles Well being Sciences. Be aware: Content material could also be edited for type and size.

White House Prepares Curbs on Russia’s Access to U.S. Technology


Kevin Wolf, a accomplice in worldwide commerce at Akin Gump who labored in export controls below the Obama administration, mentioned the White Home may tailor its use of export controls to focus on sure strategic sectors, for instance firms within the aerospace or maritime business, whereas bypassing merchandise utilized by the Russian populace, like washing machines.

“They’re making it clear they’re not attempting to take motion that harms odd Russians,” Mr. Wolf mentioned.

Andy Shoyer, co-lead of worldwide arbitration, commerce and advocacy for Sidley Austin, mentioned the restrictions appeared more likely to give attention to semiconductors and semiconductor tools. The novel export controls that the US wielded towards Huawei have a robust attain with regards to semiconductors, since even chips made overseas are principally manufactured and examined utilizing equipment primarily based on American designs, he mentioned.

“It’s not simply what’s bodily exported from the U.S.,” Mr. Shoyer mentioned. “It may embody a considerable quantity of manufacturing, as a result of a lot of the semiconductor business depends on U.S. expertise.”

The worldwide semiconductor business, which has been roiled by shortages and provide chain disruptions all through the pandemic, may face extra disruptions given Ukraine’s function within the semiconductor provide chain.

Stacy Rasgon, a senior analyst at Bernstein Analysis, mentioned Ukraine was an necessary location for the purification of neon, a fuel used within the manufacturing of semiconductors. Whereas neon prices have been only a tiny fraction of what semiconductor firms pay, “probably placing a big fraction of purification capability in danger sounds considerably ominous for an business already scuffling with shortages,” he mentioned.

A spokesman for the Semiconductor Trade Affiliation mentioned the group was nonetheless evaluating potential impacts associated to Russia’s and Ukraine’s roles as supplies suppliers. However he mentioned Russia was not a big direct shopper of semiconductors, accounting for lower than 0.1 p.c of worldwide chip purchases, in line with the World Semiconductor Commerce Statistics group.

Weston Kieschnick on Relationship-Building and Education Technology


Adapting to a wave of latest edtech platforms and merchandise, and selecting probably the most helpful amongst them, might be daunting for some educators. Creator, training marketing consultant, and coach Weston Kieschnick is used to guiding lecturers by means of uncertainty about how expertise can serve their lecture rooms. ASCD talks with him about blended studying, social-emotional wellness, and the way lecturers can benefit from new applied sciences on The ASCD Weblog.