SCG CONFIRMED AS VENUE FOR NEXT WEEK’S HISTORY-MAKING 2019 NRL TOUCH PREMIERSHIP GRAND FINAL

first_imgTouch Football Australia (TFA), the Sydney Roosters and the SCG Trust have today announced that next week’s Grand Final of the 2019 NRL Touch Premiership – an historical event for the sport of Touch Football – will be held at Sydney’s most iconic stadium, the SCG.The event will be held at 12pm on Sunday 18th August.This year has seen the first full season of the NRL Touch Premiership play out. The NRL Touch Premiership is an elite Touch Football tournament with men’s and women’s tournaments played simultaneously. Teams represent eight NRL clubs.Games are played at major stadiums across Australia and New Zealand and are broadcast on Fox League, NRL.com and Kayo, as well as Sky Sport in New Zealand.Last year, 2018, saw the NRL Touch Premiership launch, though that was a pilot tournament with just seven gamedays. This year the tournament has seen a full season played over five months.The NRL Touch Premiership Grand Final will be hosted by the Sydney Roosters, one of the clubs involved in the NRL Touch Premiership. The Grand Final will tap off at midday, ahead of the 2pm Roosters vs Warriors NRL fixture.TFA CEO Jamie O’Connor is thrilled that the NRL Premiers, the Roosters, are keen to host this history-making event – the Grand Final for the first full season of this elite touch tournament – at a venue with such a rich sporting history.“This is a momentous occasion for our sport. The new NRL Touch Premiership is now the world’s premier domestic touch competition so to be able to play the Grand Final on one of the world’s most iconic stadiums is very special,” he said.“Come Grand Final day you’ll see the best touch footballers in the world battling it out for the Premiership. It’ll be an entertaining spectacle from world-class athletes who are extremely fast, with phenomenal footwork and ball skills.“The Premiership is the first time the public has been able to witness these athletes in action at major stadiums and on TV and I’m looking forward to the show they’ll put on.”Sydney Roosters CEO Joe Kelly thanked TFA for allowing the Club to host their Grand Finals and called on Members and fans to show their support.“We’re thrilled to play host to the 2019 NRL Touch Premiership Men’s and Women’s Grand Finals at the Sydney Cricket Ground.“The competition has come a long way in a short amount of time and features some of the best touch football talent in the country, many Australian representative players.“We’re calling on our Roosters Members and supporters to arrive early and show your support for the players that have qualified for the Grand Finals.”Current status of the tournamentsThe Parramatta Eels are guaranteed a spot in the Women’s Grand Final, while the North Queensland Cowboys are guaranteed a spot in the Men’s.The Semi-Finals will determine who takes on the Eels in the Women’s and the Cowboys in the Men’s, when second place on each of the men’s and women’s ladders plays third place. The Semi-Finals will be held at 12pm this Sunday 11th August at GIO Stadium, Canberra.In the Women’s, the Gold Coast Titans (second on the ladder) will take on the Brisbane Broncos (third) for a grand final spot; while in the Men’s, the Newcastle Knights (second) will go head to head with the Wests Tigers (third).Touch Football is Australia’s largest social sport, with 680,000 participants around Australia. And it’s hugely popular in Sydney’s Eastern Suburbs – the Eastern Suburbs Touch Association is the largest Touch Football competition in NSW, and the second largest in Australia (after Brisbane Metropolitan Touch Association).“We’re looking forward to footy fans from Sydney and across New South Wales – as well as those following their teams down from Queensland – coming to the SCG to witness this historic event.”Those who can’t make it to the game can watch live on Fox League, or live and on-demand on Kayo Sports.Key facts about the 2019 NRL Touch Premiership8 NRL clubs: The tournament has expanded from six NRL clubs in 2018 to eight in 2019, with the Sydney Roosters and the New Zealand Warriors joining the Wests Tigers, Parramatta Eels, Newcastle Knights, Gold Coast Titans, Brisbane Broncos and North Queensland Cowboys in this elite Touch Football tournament.240 elite athletes: Each of the eight NRL clubs have fielded both an elite women’s and elite men’s touch team, meaning that more than 120 female and 120 male athletes have been competing to win their club a Premiership.26 gamedays: The tournament has also significantly extended in gamedays since 2018 – from just seven in 2018 to 26 in 2019. The tournament runs over a period of five months, from 6th April to 18th August 2019.More than 10 stadiums: Matches have been played at all major stadiums throughout Australia (including ANZ, Suncorp and CBUS Stadiums), as well as the brand new Western Sydney Stadium, Adelaide Oval, Glen Willow Stadium in Mudgee, GIO Stadium in Canberra and Mt Smart Stadium in New Zealand.For more information or to arrange an interview, contact:NRL Touch Football GM – Marketing and Communications, Alice EllisPh: 0436 668 327  //  Email: alice.ellis@touchfootball.com.aulast_img read more

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33 year old male charged with five firearm related charges – Kew

first_imgFacebook Twitter Google+LinkedInPinterestWhatsAppProvidenciales, Wednesday, 08th October 2014 11:08AM – After a thorough investigation by the Royal Turks and Caicos Islands Police Force, charges have been laid against a 33-year-old male relating to an incident, which took place on Sunday, 05th October 2014 in the Kew Town area. The 33 year old male will be taken before the Chief Magistrate in the Magistrate’s Court later this week on charges of Discharging Firearm, Possession of Ammunition, Discharging Ammunition, Possession of Firearm with intent to endanger life and Possession of Ammunition with intent to endanger life.The 33 year old male will not be entering a plea until the day of his Sufficiency Hearing in the Supreme Court. The Chief Magistrate will schedule the date for that Sufficiency Hearing later this week. Historic $4m road works project in Kew Town, Glass Shack, first ever sidewalks under construction YOUNG MAN FOUND DEAD, KEW TOWN AGAIN Facebook Twitter Google+LinkedInPinterestWhatsApp Related Items:kewtown, magistrate’s court, possession of fireaRM, royal turks and caicos police force Recommended for you Nearly 100 Haitian migrants caught by TCI Police Marine divisionlast_img read more

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Meredith Zinczenko Partner On Mag Launch

first_imgMeredith and David Zinczenko’s Galvanized agency are partnering on the launch of a quarterly magazine built off of the latter’s successful “Eat This, Not That!” healthy-eating franchise.The first issue will be distributed at 80,000 newsstands starting Dec. 2, though Meredith wouldn’t release the total draw. Galvanized will handle editorial, while Meredith is responsible for printing, distribution, sales and marketing. With heavy paper stock, a thick folio and a hefty $13 price tag, the magazine is built on reader revenue, but advertising still plays a small part. Just one of its 120 pages—the back-cover—is an ad, but Meredith says it’s looking to expand on that base in future issues. It’s a model that the publisher has used in the past, according to Tom Harty, president of Meredith’s national media group.”We have produced a number of high quality publications through our Special Interest Media Group on topics from food to home décor to kitchen and bath design,” he says. “Frequently called ‘bookazines,’ these titles typically sell for a higher price point.”The content also meshes well with Meredith’s portfolio of epicurean and healthy-living brands, including Eating Well, allrecipes and Fitness. Meredith’s deal doesn’t extend to Web content or books, however.For Zinczenko and Galvanized, the magazine launch is the first piece of a franchise reboot that will include a new website, mobile apps, digital magazine and two new books.Zinczenko, the former editor-in-chief of Men’s Health and founder of “Eat This, Not That!,” bought the brand from Rodale, his former employer, in September for an undisclosed amount. The franchise has produced 16 books and sold more than 7 million copies since its debut in 2007.last_img read more

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The Wilmington Insider For July 31 2018

first_imgWILMINGTON, MA — Below is a round-up of what’s going on in Wilmington on Tuesday, July 31, 2018:Happening Today:Weather: Mostly sunny, with a high near 84. Calm wind becoming south around 6 mph in the afternoon.Municipal/School Meetings: The Wilmington School Committee is meeting at 7:30am in the Wilmington High School’s Principal’s Conference Room. Read the agenda HERE. … The Wilmington Board of Assessors is meeting at 11am in the Wilmington Town Hall’s Small Conference Room. Read the agenda HERE.In The Community: The Tewksbury/Wilmington Elks holds bingo — open to the public — every Tuesday. Doors open at 5pm. Pizza, hot dog and pastries are sold. Free coffee.In The Community: Angels In Motion meets every Tuesday, from 9:30am to 2:30pm, at the Wilmington Knights of Columbus Hall (112 Middlesex Avenue).  The club provides a great opportunity for seniors to meet new friends or reacquaint with old ones. A luncheon is served as noon.  Free. Handicapped accessible.In The Community: The Town Beach is open today.  Lifeguards are on duty from 10am to 8pm. Admission is FREE for residents. Proof of residency is required. Learn more HERE.At The Library: Preschool Storytime: Rock Around The World at 10am. Pokemon Club at 3pm. [Learn more and register HERE.]At The Senior Center: Walking Group at Yentile at 8am. Computer Class at 9am. Aerobics at 10:30am. Mah Jong at 1pm. [Learn more HERE.](NOTE: What did I miss? Let me know by commenting below, commenting on the Facebook page, or emailing wilmingtonapple@gmail.com. I may be able to update this post.)Like Wilmington Apple on Facebook. Follow Wilmington Apple on Twitter. Follow Wilmington Apple on Instagram. Subscribe to Wilmington Apple’s daily email newsletter HERE. Got a comment, question, photo, press release, or news tip? Email wilmingtonapple@gmail.com.Share this:TwitterFacebookLike this:Like Loading… Related5 Things To Do In Wilmington On Tuesday, July 16, 2019In “5 Things To Do Today”5 Things To Do In Wilmington On Tuesday, July 9, 2019In “5 Things To Do Today”5 Things To Do In Wilmington On Tuesday, July 23, 2019In “5 Things To Do Today”last_img read more

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2014 Honda City Diesel Enters India Market Price and Variants Details

first_imgJapanese auto major Honda’s big ticket item – the fourth generation City sedan has finally made its way into the burgeoning Indian market with a price tag of ₹7.42 lakh.City, the most desired car from Honda on Tuesday finally bid adieu to the speculations and the rumours around it since its global unveiling in November last year. The company launched the car in five trims in the domestic market-Honda City E, City S, City, SV, City V and City VX. This is the first time Honda is offering its City sedan in both petrol and diesel options in the country. Honda City diesel is going to be India’s most fuel efficient car by offering a fabulous 26kmpl mileage. The petrol version of the City sedan packs a 1.5-litre i-VTEC engine, which churns out a power of 119 PS @ 6600 rpm and 145 Nm torque @ 4600 rpm. The diesel variant comes with a 1.5-litre i-DTEC engine, which is also used in the Honda Amaze. It is mated with a 6-speed manual transmission and pumps in 100 PS power @ 3600 rpm and 200 Nm torque @ 1750 rpm. The petrol model of City comes in two variants: 5-speed manual and automatic, which is offered with a CVT automatic gearbox.The petrol variants of the City sedan is priced between ₹7.42 lakh and ₹10.98 lakh, while the diesel variant starts at ₹8.62 lakh and the top variant comes for ₹11.10 lakh.Dealers across India have started accepting bookings for Honda. The delivery of the City petrol will commence from mid-February, while the diesel models will be available in the market immediately, said the company. According to Honda, the bookings have already crossed 9,000.Price and ModelsHonda City petrolPetrol E MT: ₹7.42 lakhPetrol S MT: ₹ 8.04 lakhPetrol SV MT:  ₹8.49 lakhPetrol V MT:  ₹8.99 lakhPetrol VX MT:  ₹9.93 lakhPetrol V CVT: ₹9.49 lakhPetrol VX CVT: ₹10.98 lakhHonda City DieselDiesel E MT: ₹8.62 lakhDiesel S MT: ₹9.24 lakhDiesel SV MT: ₹9.66 lakhDiesel V MT: ₹10.16 lakhDiesel VX MT: ₹ 11.10 lakhlast_img read more

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Nasa showcases potential new heart pump motor

first_imgAn animation released by Nasa on social media on 8 March showcases a new piece of technology which could give hope to people born with a missing ventricle. The video shows a heart motor pump that uses flywheel technology produced by Doctor Mark Rodefeld at Nasas Glenn Research Center.Flywheel technology is a type of technology that features a motor gaining incredible speed and then maintaining the energy produced as rotational or kinetic energy. Rhodes states on Nasas website that the idea behind the pump is to help those, particularly children, who are born with half a heart and therefore lack the full system to pump blood round their bodies.The current method of dealing with this problem is to have a heart transplant or the Fontan procedure, which is a set of surgeries that creates a passive version of the blood pumping system within the heart. Rodefelds solution was to create a small conical pump, driven by an electrical motor to be placed into an existing heart network. This would reproduce the pressures and flow coming from the body and head, reducing the wear and tear on the single remaining ventricle and extend the life of the patient.A team of scientists and researchers spent two years designing and creating prototypes based on Rodefelds idea and their initial tests have been successful. But Nasa states on its website that further development is needed as the pump will need to be the size of a nickel in order to work. Rodefeld hopes that he will be able to engage more engineers at Glenn in the development of the project, with the goal of advancing this life-saving technology in young patients.last_img read more

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Wisconsin girl termed the hero for escaping captor

first_imgA US Federal Bureau of Investigation (FBI) missing person poster shows Jayme Closs, a 13-year-old Wisconsin girl, missing since her parents were discovered fatally shot three months ago, has been located in Gordon, Wisconsin, US as seen in this poster provided on 11 January. Photo: ReutersA 13-year-old girl’s escape from a rural home where she was held captive for three months by a Wisconsin man charged with murdering her parents helped break the case and she should be treated as a hero, the local sheriff said on Friday.Jayme Closs is with her aunt after her rescue on Thursday and has been reunited with the rest of her family and her dog, Barron County sheriff Chris Fitzgerald told reporters.Thousands of volunteers and hundreds of law enforcement officers had searched the small town of Barron after Closs’ parents were found shot dead in their home in October, their front door blown open with a shotgun, their daughter gone.Closs was targeted by suspected kidnapper Jake Patterson, 21, who carefully planned her parents’ murder, even shaving his head to avoid leaving forensic evidence at the crime scene, Fitzgerald told reporters.“Jayme was the target,” said Fitzgerald. “The suspect had specific intentions to kidnap Jayme and went to great lengths to prepare to take her.”Relying on what Fitzgerald called “the will of a kid to survive,” a dishevelled Closs escaped the house in the tiny town of Gordon where she had been held captive, about 60 miles (100 km) north of her home in Barron. Her captor was not at home when she managed to flee, Fitzgerald said. She was found by a woman walking her dog on Thursday afternoon.“Jayme is the hero in this case. She’s the one who helped us break this case,” Fitzgerald told reporters.Closs spoke to investigators on Friday after spending a night in the hospital for evaluation. Authorities did not offer any details about the conditions of her captivity or how she had managed to escape.‘Looking for Her’Less than 15 minutes after Closs’ rescue, Patterson was taken into custody after police pulled him over, based on Closs’ description of his vehicle.“The suspect was out looking for her when law enforcement made contact with him,” Fitzgerald told a news conference, adding police were not seeking any other suspects in the case at this time.Police are now trying to work out why Patterson targeted Closs.“We don’t believe there was a social media connection and are determining how he became aware of Jayme,” Fitzgerald said. “Nothing in this case shows the suspect knew anyone at the Closs home, or at any time had contact with anyone in the Closs family.”Patterson, an unemployed resident of Gordon, was charged on Friday with kidnapping and with murdering James and Denise Closs with a shotgun. Their bodies were discovered on 15 October.He was being held in the Barron County jail, and it was not yet clear whether he had a lawyer. He faces an initial court hearing on Monday.Authorities have released few details about Patterson, who has no previous criminal record in Wisconsin.Fitzgerald, the Barron County sheriff, said Patterson grew up in Gordon and attended high school in the area.The president of the Jennie-O Turkey store in Barron, where James and Denise Closs had worked for decades, said Patterson had been an employee there for a single day three years ago. He quit the next day, saying he was moving, Steve Lykken said.“We are still mourning the loss of longtime Jennie-O family members Jim and Denise, but our entire team is celebrating with the community, and the world, that Jayme has been found,” Lykken said.The superintendent of the local school district, Jean Serum, described Patterson as a nice kid and member of his high school’s quiz bowl team. He graduated in 2015.Inne StrengthAbout 350 people under the age of 21 are kidnapped by strangers in the United States each year, according to FBI data.Those that survive months in captivity need inner strength and a great deal of luck, according to survivors and experts who have worked with such victims.Elizabeth Smart, who was held captive for nine months as a teenager after her 2002 abduction in Utah, posted a photo of Closs on Instagram, praising the “miracle” that she had been found.“No matter what may unfold in her story let’s all try to remember that this young woman has SURVIVED and whatever other details may surface the most important will still remain that she is alive,” Smart wrote.last_img read more

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Iran tanker centre of diplomatic row leaves Gibraltar

first_imgAn Iranian flag flutters on board the Adrian Darya oil tanker, formerly known as Grace 1, off the coast of Gibraltar on 18 August 2019. Gibraltar rejected a US demand to seize the Iranian oil tanker at the centre of a diplomatic dispute as it prepared to leave the British overseas territory after weeks of detention. Photo: AFPThe Iranian oil tanker at the centre of a diplomatic dispute has departed from Gibraltar after the British overseas territory rejected a US demand to seize the vessel.According to the monitoring website Marine Traffic, the supertanker — which had been detained since 4 July off the coast of Gibraltar — lifted anchor Sunday evening and started sailing south.Authorities in the British overseas territory have not confirmed its departure.Gibraltar seized the Grace 1 on 4 July on suspicion it was transporting oil to Syria in breach of European Union sanctions, triggering a sharp deterioration in relations between Tehran and London. Iran has repeatedly denied any violations.A Gibraltar judge ordered the tanker released last Thursday, with Iranian officials saying a new crew had arrived to pilot the vessel — now renamed the Adrian Darya — and its 2.1 million barrels of oil.But on Friday, the US Justice Department filed a last-minute request to detain the ship, alleging it was involved in supporting illicit shipments to Syria by Iran’s Islamic Revolutionary Guard Corps, listed as a terrorist group by Washington.Gibraltar’s government rejected that request, saying it could not seek a court order to detain the supertanker because US sanctions against Iran were not applicable in the European Union.The vessel had turned east as of early Monday, although its ultimate destination was unclear.In its decision ordering the release of the tanker, Gibraltar said it had received assurances from Iran that the vessel would not head to any country subject to EU sanctions.Iran denied it had made any promises about the ship’s destination to secure the release.”Iran has given no assurances over the Grace 1 not going to Syria to secure its release,” a state media website quoted foreign ministry spokesman Abbas Mousavi as saying.The US State Department has threatened to issue a visa ban on anyone working on the ship.The 4 July seizure came amid surging tensions in the Gulf after several alleged Iranian attacks on smaller tankers.Iran termed the move an “illegal interception” staged by the United States, while Washington cheered it as “excellent news”.Iran subsequently detained the British-flagged tanker Stena Impero in what was seen as a tit-for-tat move.Ties between Tehran and Washington have frayed since president Donald Trump withdrew last year from a landmark 2015 nuclear deal between major powers and Iran, reimposing crippling unilateral sanctions.last_img read more

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Trump Defeats Clinton Ed Gonzalez is the New Sheriff of Harris County

first_imgDonald Trump has been elected the 45th president of the United States, the capstone of a tumultuous and divisive campaign that won over white voters with the promise to “Make America Great Again,” NPR reports.In Harris County:Houston Public Media’s Coverage of Election 2016Democratic candidate for Sheriff of Harris County Ed Gonzalez won over incumbent Ron Hickman with 53 percent of the vote.Kim Ogg won a rematch of the Harris County District Attorney race against Republican incumbent Devon Anderson. Voters defeated a controversial school finance measure on the ballot for the Houston Independent School District, known as Proposition 1, sending the state’s largest school district into uncharted waters. Sharelast_img read more

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Stretchable thermoelectric coils for energy harvesting in miniature flexible wearable devices

first_img © 2018 Science X Network The thermoelectric helical coil architecture was fabricated using monocrystalline silicon as the active material. The mechanically guided assembly generated 3-D helical structures from 2-D serpentines via compressive buckling. The serpentines incorporated silicon ribbons with p- and n-type segments, and the system was encapsulated on the top and bottom with polymer coatings. The architecture enabled transformation of the system from 2-D to 3-D during deployment and use. Although heavily doped with silicon, the 3-D coils were able to provide remarkable levels of mechanical compliance and robustness during handling and bending applications. The assembly did not significantly deviate from the geometry predicted using finite element analysis (FEA). Such material characteristics made the system well-suited to form intimate thermal interfaces to the human body, such as the wrist or ankles. Miniaturized semiconductor devices with energy harvesting features have paved the way to wearable technologies and sensors. Although thermoelectric systems have attractive features in this context, the ability to maintain large temperature differences across device terminals remains increasingly difficult to achieve with accelerated trends in device miniaturization. As a result, a group of scientists in applied sciences and engineering has developed and demonstrated a proposal on an architectural solution to the problem in which engineered thin-film active materials are integrated into flexible three-dimensional (3-D) forms. The approach enabled efficient thermal impedance matching, and multiplied heat flow through the harvester to increase efficient power conversion. In the study conducted by Kewang Nan and colleagues, interconnected arrays of 3-D thermoelectric coils were built with microscale ribbons of the active material monocrystalline silicon to demonstrate the proposed concepts. Quantitative measurements and simulations were conducted thereafter to establish the basic operating principles and key design features of the strategy. The results, now published on Science Advances, suggested a scalable strategy to deploy hard thermoelectric thin-films within energy harvesters that can efficiently integrate with soft material systems including human tissue to develop wearable sensors in the future. Thermoelectric devices provide a platform to incorporate ubiquitous thermal gradients that generate electrical power. To operate wearable sensors or the “Internet of Things” devices, the temperature gradient between the surrounding environment and the human body/inanimate objects should provide small-scale power supplies. Continued advances in the field focus on aggressive downscaling of power requirements for miniaturized systems to enhance their potential in thermoelectric and energy harvesting applications. Integrated processors and radio transmitters for example can operate with power in the range of subnanowatts, some recent examples are driven via ambient light-based energy harvesting and endocochlear potential. Such platforms can be paired with sensors with similar power to enable distributed, continuous and remote environmental/biochemical monitoring. Two key challenges in the development of miniaturized thermoelectric harvesters include matching the requisite thermal impedance and mechanical compliance of the active materials to integrate in biological systems. A well-developed system for device flexibility includes combining thin film polymers with metal foils such as wires or ribbons. In the study, Nan et al propose and demonstrate a solution by developing a two-dimensional (2-D) precursor system in the development of functional 3-D helical coils. The naturally flexible nature of the coils enabled the systems to conform to complex biological surfaces, even those dynamic with time, to ensure excellent thermal contact with the heat source. Furthermore, the 3-D nature of the system provided a multifold increase in the surface area for higher heat exchange capacity to yield maximum power. Mechanical deformability and durability of 3D thermoelectric harvesters. A) simulated distributions of strain in the silicon thermoelectric leg before and after uniaxial stretching in the plane by 60 percent. Results indicated reductions in strain on stretching as expected based on compressive buckling used to form 3D structures. B) Results of experimental durability tests involving multiple cycles of uniaxial stretching and release on a coil structure. The data only indicated a small increase in the electric resistance. C) Optical images (top) and simulated structures (bottom) after in-plane stretching. D) Simulated values of the maximum local strain. A maximum compression of 26 percent is possible prior to reaching fracture strain of silicon – the limiting factor of the system. Inset shows the deformed structure after compression and includes a strain distribution map of the silicon leg alongside the fracture point. E) Experimental measurements of the device resistance upon vertical compression. At a compression of 40 percent, the device showed open-circuit behavior due to silicon fracture. Credit: Science Advances, doi: 10.1126/sciadv.aau5849. To improve mechanical and thermal properties of the 3-D coils, the scientists used FEA software for computationally guided optimization of the resulting device. In principle, the 3-D architecture of the device was advantageous for effective harvesting. Therefore, by design, the 3-D helical coil system included a tapering geometry that increased in width toward the top as engineered using FEA to optimize thermal and mechanical responses. The design scheme in the study was enhanced specifically for harvesting in miniature devices. Increased cooling capacity of the device design had greater benefits to contrast any losses owing to parasitic heat flow in the system.Nan et al, also conducted mechanical compliance tests on the devices to understand their capacity to endure substantial bending, in-plane stretching and out-of-plane compression, as with previous reports. The 3-D structures could be stretched by up to 60 percent in the in-plane direction for hundred cycles and vertically compressed up to 30 percent, with minimal degradation in electric properties. The devices showed exceptional mechanical compliance as predicted by FEA. Uniaxial stretching across 200 cycles did not result in electrical or mechanical failure. The 3-D coil showed resilience with potential for interfacial integration within miniature devices. Energy harvesting with thermoelectric coils and a road map for power enhancement. A) Schematic illustration of the measurement conditions testing the performance of harvesting devices. B) Measured power output characteristics showing a maximum power of 2 nW. C) Projected power output achieved by using known thermoelectric materials with thermoelectric figure-of-materials zT higher than that of Si. Credit: Science Advances, doi: 10.1126/sciadv.aau5849. Journal information: Science Advances Citation: Stretchable thermoelectric coils for energy harvesting in miniature flexible wearable devices (2018, November 14) retrieved 18 August 2019 from https://phys.org/news/2018-11-stretchable-thermoelectric-energy-harvesting-miniature.html Enhanced power factor in transparent thermoelectric nanowire materials 3D thermoelectric coils as active components of flexible and deformable systems to harvest electric power for wearable technologies. A) Schematic illustration of fabrication and 3D assembly. Thin-film p- and n-type materials were patterned into 2D serpentine shapes and transferred onto a layer of polyimide (PI) to form the active materials. The 2D precursor structures were completed with metal junctions and a surface coating of PI patterned via photolithography and etching. Chemical bonding such systems to pre-structured silicone substrates at selective locations were followed by pre-stretch to initiate a process of geometrical transformations to yield the final 3D architecture. B) Optical images of resulting 3D thermoelectric coils. The geometry of the structure and elastomer substrate combined to provide mechanical robustness against handling and mechanical deformation. C) An array of 8 x 8 coils. The magnified view shows the 3D structure is consistent to the geometry predicted by FEA. The colored profile represents strain in the silicon leg. D) The 8 x 8 array can be attached to the skin on the wrist and on the ankle. Photo credit: Xiwei Shan, UIUC Lab, Science Advances, doi: 10.1126/sciadv.aau5849. , Nature Biotechnology , Nano Energy More information: Kewang Nan et al. Compliant and stretchable thermoelectric coils for energy harvesting in miniature flexible devices, Science Advances (2018). DOI: 10.1126/sciadv.aau5849U. Pelz et al. Fabrication Process for Micro Thermoelectric Generators (μTEGs), Journal of Electronic Materials (2015). DOI: 10.1007/s11664-015-4088-7 Chunlei Wan et al. Flexible thermoelectric foil for wearable energy harvesting, Nano Energy (2016). DOI: 10.1016/j.nanoen.2016.09.011 Patrick P Mercier et al. Energy extraction from the biologic battery in the inner ear, Nature Biotechnology (2012). DOI: 10.1038/nbt.2394 Power output projections of the harvesting devices were also characterized to show consistent results aligned with design expectations. The open-circuit voltage of the device did not diminish across time in the measurements indicating that the thermal profile of the device was in a steady state. In the study, the authors generated a road map for power enhancement and a fabrication scheme to engineer energy harvesting devices with materials other than silicon – including organic variants.The authors recommend additional research on deposition methods, doping and patterning for organic and composite materials. The materials should not succumb to electrical resistance during mechanical transformation from 2-D to 3-D. With silicon used in the study, a three-fold increase in resistance was observed during the transformation potentially due to electrode contact, device degradation or plastic deformation in some parts of the device. The study represents a promising strategy to integrate thin-film materials in harvesters with soft material systems (including human skin) to realize energetically optimized wearable electronic devices in the future. This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only. Explore furtherlast_img read more

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