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The experimental prototypes are lightweight, conform to the shape of the body, and can generate far more electricity than previous lightweight heat harvesting technologies.Researchers at North Carolina State University have developed a new design for harvesting body heat and converting it into electricity for use in wearable electronics. “In this prototype, the TEG is only one centimeter squared, but we can easily make it larger, depending on a device’s power needs,” says Vashaee, who worked on the project as part of the National Science Foundation’s Nanosystems Engineering Research Center for Advanced Self-Powered Systems of Integrated Sensors and Technologies (ASSIST) at NC State.The researchers also identified the optimal site on the body for heat harvesting.

Meanwhile, wearing the band on the chest limited air flow — limiting heat dissipation — since the chest is normally covered by a shirt. The entire system is thin — only 2 millimeters — and flexible. Heat that is not converted into electricity passes through the TEG into an outer layer of thermally conductive material, which rapidly dissipates the heat.“Previous approaches either made use of heat sinks — which are heavy, stiff and bulky — or were able to generate only one microwatt or less of power per centimeter squared (µW/cm2). Our technology generates up to 20 µW/cm2 and doesn’t use a heat sink, making it lighter and much more comfortable.“Wearable thermoelectric generators (TEGs) generate electricity by making use of the temperature differential between your body and the ambient air,” says Daryoosh Vashaee, an associate professor of electrical and computer engineering at NC State and corresponding author of a paper on the work.

“The goal of ASSIST is to make wearable technologies that can be used for long-term health monitoring, such as devices that track heart health or monitor physical and environmental variables to predict and prevent asthma attacks. While the skin temperature is higher around the wrist, the irregular contour of the wrist limited the surface area of contact between the TEG band and the skin.In addition, the researchers incorporated the TEG into T-shirts. “T-shirt TEGs are certainly viable for powering wearable technologies, but they’re just not as efficient as the upper arm bands,” Vashaee says.”The new design begins with a layer of thermally conductive material that rests on the skin and spreads out the heat.. The conductive material is topped with a polymer layer that prevents the heat from dissipating through to the outside air. To do that, we want to make famous SMF batteries factory devices that don’t rely on batteries,” he says. This forces the body heat to pass through a centrally-located TEG that is one cm2. The researchers also found that the upper arm was the optimal location for heat harvesting

Scientists have developed a smart bandage that can actively monitor chronic wounds and deliver appropriate drug treatments to improve the chances of healing. Chronic skin wounds from burns, diabetes, and other medical conditions can overwhelm the regenerative capabilities of the skin and often lead to persistent infections and amputations. Normal healing wounds fall within the range of pH 5.The pH of a chronic wound is one of the key parameters for monitoring its progress.With the idea of providing an assist to the natural healing process, the researchers at Tufts University in the US designed the bandages with heating elements and thermoresponsive drug carriers that can deliver tailored treatments in response to embedded pH and temperature sensors that track infection and inflammation. Patients are often older and limited in their ability to provide self-care, yet non-healing wounds are typically treated in an outpatient setting or at home.

While the smart bandages in this study combine pH and temperature sensors, researchers have also developed flexible sensors for oxygenation - another marker China motorcycle batteries supplier of healing - which can be integrated into the bandage. Components were selected to keep the bandage low cost and disposable, except for the microprocessor, which can be re-used.5, whereas non-healing infected wounds can have pH well above 6. The entire construct is attached to a transparent medical tape to form a flexible bandage less than 3 mm thick."In fact, flexible electronics have made many wearable medical devices possible, but bandages have changed little since the beginnings of medicine.5."One can imagine embedding other sensing components, drugs, and growth factors that treat different conditions in response to different healing markers," he said.Temperature is also an important parameter, providing information on the level of inflammation in and around the wound.

The smart bandages could provide real-time monitoring and delivery of treatment with limited intervention from the patient or caregivers. A microprocessor reads the data from the sensors and can release drug on demand from its carriers by heating the gel.Inflammation could also be tracked not just by heat, but by specific biomarkers as well.Non-healing chronic wounds are a significant medical problem.The research, published in the journal Small, is aimed at transforming bandaging from a traditionally passive treatment into a more active paradigm to address a persistent and difficult medical challenge."The smart bandage we created, with pH and temperature sensors and antibiotic drug delivery, is really a prototype for a wide range of possibilities," said Sonkusale.5 to 6. We are simply applying modern technology to an ancient art in the hopes of improving outcomes for an intractable problem," said Sonkusale."Weve been able to take a new approach to bandages because of the emergence of flexible electronics," said Sameer Sonkusale, a professor at Tufts University in the US.

At the SpaceX event, the company named its first private passenger on a planned voyage around the moon in 2023.(Source).Audi dealers, particularly those from California where Tesla has made significant inroads, cheered the e-tron at Monday night’s crowded event.Keogh told attendees at Monday’s event that an e-tron had made a 175-mile journey over the mountains east of San Francisco with range to spare.“I want Audi to be the number-one electric vehicle seller in America over the long term,” Audi of America President Scott Keogh told Reuters in an interview on Monday.Tesla has developed its own network of Supercharger charging stations with more than 11,000 chargers in North America.Audi and parent Volkswagen are using the US launch of the e-tron SUV in mid-2019 to take aim at one obstacle to expanding electric vehicle sales - the lack of convenient ways to recharge their batteries.The e-tron is electric, and has two electric motors - one in the front and one in the rear - driving all four wheels.The e-tron will have an advanced cruise-control system that can keep the car within a lane and maintain a set distance behind another vehicle, but the system will be designed so that drivers must keep hands on the wheel. It is one of a volley of electric vehicles coming from Volkswagen AG brands, as well as other European premium brands including Daimler-owned Mercedes-Benz, BMW, Volvo Cars VRLA batteries and Jaguar Land Rover. Electrify America plans to have 2,000 chargers installed by mid-June next year. The Hungarian factory building motors for the e-tron will start with a production pace equivalent to 200 vehicles a day, Audi officials said.Audi officials said they do not have official range estimates for the e-tron SUV under US testing procedures. They said the vehicle should achieve a range under less rigorous European testing standards of roughly 250 miles or 400 km.In Europe, the vehicle will use cameras instead of conventional mirrors to give drivers a view to the rear.

However, in many other respects the e-tron is a conventional, mainstream luxury SUV. That feature is still not approved by US regulators.Audi will partner with online retailer Amazon to sell and install home electric vehicle charging systems to buyers of the e-tron, the companies said on Monday.UBS analyst Patrick Hummel said in a note on Tuesday that the e-tron “fails to set new benchmarks in the premium EV segment, even though we consider it better than the Mercedes EQC.The e-tron’s 95 kWh battery has less capacity than the 100 kWh battery used in the Tesla Model X 100D model, but more than the base Model X 75D. The e-tron is 5 inches (13 cm) shorter than the Tesla Model X, and it has conventional doors.“We want to work with all” automotive brands, said Giovanni Palazzo, Electrify America’s chief executive. It offers seating for five, and its length and wheelbase position it in the center of the market for midsize, five-passenger luxury SUVs such as the BMW X5.The Audi e-tron midsize SUV will be offered in the United States next year at a starting price of USD 75,795 before a USD 7,500 tax credit.Audi has been heralding the launch of the e-tron SUV for some time, but until Monday it had not shared many details of the vehicle. Those will be open to any vehicle, and customers can swipe a credit card to recharge.“We see charging installation as a very important business,” Pat Bigatel, director of Amazon Home Services, told Reuters at Audi’s launch event in San Francisco’s Bill Graham Civic Center.Tesla offers wall connectors for home charging at a $500 list price, and will arrange for installation, according to the company.Tesla CEO Elon Musk, who is also head of rocket company SpaceX, marked the e-tron launch by staging a SpaceX event in Los Angeles at roughly the same time on Monday evening as Audi’s unveiling. The Model X uses vertically opening “falcon wing” doors.All aim to expand the market for premium electric vehicles and also to grab share of that market from Palo Alto, California-based Tesla, which has had the niche largely to itself.

Analysts on Tuesday expressed concern that the vehicle’s driving range may not measure up to the Tesla Model X.The Model X 100D is rated at 295 miles (475 km) of range by the US government.” The EQC is a rival electric SUV the Daimler AG brand plans to launch in 2020. Amazon will deliver the hardware and hire electricians to install them through its Amazon Home Services operation.Audi executives said home charging stations would cost about $1,000, depending on the home’s electrical system.Amazon’s partnership with Audi to provide home charging systems is the first time the online retailer has struck such a deal with an automaker, and signals a new front in Amazon’s drive to expand its reach into consumers’ homes beyond the presence of its Alexa smart speakers in living rooms and kitchens.German luxury car brand Audi on Monday staged the global launch of a new electric sport utility vehicle on the home turf of rival Tesla Inc, and highlighted a deal with Amazon Inc to make recharging its forthcoming e-tron models easier. He also emphasized that the e-tron is designed to recharge more rapidly than rival electric vehicles.At the same time, Electrify America, a company funded by Volkswagen as part of its settlement of US diesel emission cheating litigation, plans to launch next year the next round of installations of public charging stations, Electrify America executives told Reuters

’ Creating new habits: Habit is a powerful force, unknowingly we all form habits about everything we do. Voice assistants may be in their early days right now, but once we are habituated, there’s no going back.The retail sector is optimised on people’s shopping habits, while it is anyone’s guess how exactly Alexa will impact a local retail outlet next door, the large organised stores and e-commerce sites will be at the frontline of disruption. Retail sector probably faces the maximum challenges in enhancing customer experience.Would you rather speak to your app or type this? ‘Purple women’s sleeveless top with polka dots, 100 per cent cotton, for party wear.Amazon has over 70 store brands and when you ask Alexa to order a pack of AA batteries, there is only one recommendation –AmazonBasics, its own store brand.. Something they can use it to their advantage.

This is similar to how we are now used to using the ubiquitous smartphones for completing tasks and transactions or consume content on-demand, as opposed to waiting for a show to be aired on TV.’ This means more convenience to the customer and an unfair competitive advantage to brands embracing it.Voice of a brand or vice-a-versa: When a brand builds an Alexa Skill, it is opening its gates to the new wave of early adopters and influencers who’ll be the doyens of voice commerce. Try it if you have an Echo device and welcome a pack of batteries magically appearing on your doorstep. If you can imagine a step further, a camera-less voice assistant can even help in private situations like a trail room when a customer wants to know if there is the China car batteries factory next size available!Customers are unforgiving, and retail sector whether online or physical faces upward challenges in keeping up with changing customer behaviour caused by technology.

But voice assistants like Alexa has created a great opportunity for the brands to embrace it first and welcome customers whenever they are ready. In the next six to eight months, you will start to increasingly witness white goods and appliances which say ‘Alexa enabled.The classic problem of keeping the customer engaged from the first moment they enter the store until an attendant is available can be solved by placing voice assistants and customising it to provide tactical answers to questions about products and services a customer can avail.Its changing our behaviour: Voice assistant changes our shopping behaviour at a fundamental level by helping us discover products faster. And what if we tell you building Alexa Skill is not the only way to embrace voice?Alexa Voice Services or AVS in short, lets you integrate Alexa directly into your connected brand’s app, website, or the product itself. Voice can help.

While Alexa’s brains plus Amazon’s retail muscle is a lethal combo for getting high on shopping, the impact voice assistants have are game-changing in the retail sector at large, here are top four by Sreeraman Thiagarajan, co-founder of Agrahyah Technologies. We can type about 40 to 60 words but can speak 100 to 150 words per minute, which means the experience of shopping using a voice like Alexa is faster than endlessly swiping to find the right product on a shopping website or app.Increases delight in CX: When a customer walks out of the store without purchasing, it means she simply fired everyone from the CEO to a merchandiser.

A lithium-ion battery charges and discharges move between two electrodes, called an anode and a cathode."The way to make batteries better is to improve the materials used for the electrodes.The team of researchers determined that lithium insertion caused an asymmetry in the spacing between vanadium atoms, known as Peierls distortion, which was responsible for the breakup of the VS2 flakes. The electrodes were able to maintain a reasonable capacity because, unlike cobalt oxide, the VS2-TiS2 material is electrically conductive, Koratkar said."This was new.They discovered that covering the flakes with a nanolayered coating of titanium disulfide (a material that does not Peierls distort), would stabilise the VS2 flakes and improve their performance within the battery.

Koratkar sees multiple applications for this discovery in improving car batteries, power for portable electronics, and solar energy storage where high capacity is important, but increased charging speed would also be attractive.Koratkar and his team improved the performance of batteries by substituting cobalt oxide with vanadium disulfide (VS2). Their small size would also contribute to a compact battery.Koratkar said that vanadium and sulfurs small size and weight allow them to deliver a high capacity and energy density. And it gives you faster-charging capability because its highly conductive. The TiS2 coating acts as a buffer layer.The excitement surrounding the potential of VS2 has been growing in recent years, but until now, researchers had been challenged by its instability - characteristic that would lead to short battery life.

The research was published in the Journal of Nature Communications. This discovery claims to improve battery performance for consumer electronics, solar grid storage, and electric vehicles."It gives you higher energy density because its light. It holds the VS2 material together, providing mechanical support." Koratkar said.Once that problem was solved, the team found that the VS2-TiS2 electrodes could operate at a high specific capacity, or store a lot of charge per unit mass..In recent research, scientists have discovered a high capacity lithium-ion battery Safe and reliable maintenance-free Motorcycle Battery YB5L-B2 that can charge in a matter of minutes.

The researchers not only established why that instability was happening but also developed a way to combat it, Koratkar said. From those points of view, we were attracted to this material," said Koratkar. In a traditional lithium-ion battery, the anode is made of graphite, while the cathode is composed of lithium cobalt oxide.These materials perform well together, which is why lithium-ion batteries have become increasingly popular, but now researchers believe the function can be enhanced further.When charging was done more quickly, the capacity didnt dip as significantly as it often does with other electrodes. People hadnt realised this was the underlying cause. What we are trying to do is make lithium-ion technology even better in performance," said Nikhil Koratkar, corresponding author.