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Producing electricity from your sweat might be key to next wearable technology

<p>Imagine a world where the smart watch on your wrist never ran out of charge, because it used your sweat to power itself.</p> <p>It sounds like science fiction but researchers have figured out how to engineer a <a href="https://cosmosmagazine.com/science/biology/bacterial-biofilm/" target="_blank" rel="noreferrer noopener">bacterial biofilm</a> to be able to produce continuous <a href="https://cosmosmagazine.com/science/electricity-from-sweaty-fingertips/">electricity fr</a><a href="https://cosmosmagazine.com/science/electricity-from-sweaty-fingertips/" target="_blank" rel="noreferrer noopener">o</a><a href="https://cosmosmagazine.com/science/electricity-from-sweaty-fingertips/">m perspiration</a>.</p> <p>They can harvest energy in evaporation and convert it to electricity which could revolutionise wearable electronic devices from personal medical sensors to electronics.</p> <p>The science is in a <a href="https://www.nature.com/articles/s41467-022-32105-6#ref-CR7" target="_blank" rel="noreferrer noopener">new study</a> published in <em>Nature Communications.</em></p> <p>“The limiting factor of wearable electronics has always been the power supply,” says senior author Jun Yoa, professor of electrical and computer engineering at the University of Massachusetts Amherst (UMass),  in the US. “Batteries run down and have to be changed or charged. They are also bulky, heavy, and uncomfortable.”</p> <p>But the surface of our skin is constantly moist with sweat, so a small, thin, clear and flexible biofilm worn like a Band-Aid could provide a much more convenient alternative.</p> <p>The biofilm is made up of a sheet of bacterial cells approximately 40 micrometres thick or about the thickness of a sheet of paper. It’s made up a genetically engineered version of the bacteria <em>Geobacter sulfurreducens</em> to be exact.</p> <p><em>G. sulfurreducens</em> is a microorganism known to <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3209890/#:~:text=Interestingly%2C%20Geobacter%20sulfurreducens%20also%20called,electron%20transfer%20through%20the%20biofilms." target="_blank" rel="noreferrer noopener">produce electricity</a> and has been used previously in “<a href="https://www.nature.com/articles/s41579-019-0173-x" target="_blank" rel="noreferrer noopener">microbial fuel cells</a>”. These require the bacteria to be alive, necessitating proper care and constant feeding, but this new biofilm can work continuously because the bacteria are already dead.</p> <p>“It’s much more efficient,” says senior author Derek Lovley, distinguished professor of Microbiology at UMass Amherst. “We’ve simplified the process of generating electricity by radically cutting back on the amount of processing needed.</p> <p>“We sustainably grow the cells in a biofilm, and then use that agglomeration of cells. This cuts the energy inputs, makes everything simpler and widens the potential applications.”</p> <p>The process relies on evaporation-based electricity production – the <a href="https://www.nature.com/articles/s41565-018-0228-6" target="_blank" rel="noreferrer noopener">hydrovoltaic effect</a>. Water flow is driven by evaporation between the solid biofilm and the liquid water, which drives the transport of electrical charges to generate an electrical current.</p> <p><em>G. sulfurreducens</em> colonies are grown in thin mats which are harvested and then have small circuits etched into them using a laser. Then they are sandwiched between mesh electrodes and finally sealed in a soft, sticky, breathable polymer which can be applied directly onto the skin without irritation.</p> <p>Initially, the researchers tested it by placing the device directly on a water surface, which produced approximately 0.45 volts of electricity continuously. When worn on sweaty skin it produced power for 18 hours, and even non-sweating skin generated a substantial electric output – indicating that the continuous low-level secretion of moisture from the skin is enough to drive the effect.</p> <p>“Our next step is to increase the size of our films to power more sophisticated skin-wearable electronics,” concludes Yao.</p> <p>The team aim to one day be able to power not only single devices, but entire electronic systems, using this biofilm. And because microorganisms can be mass produced with renewable feedstocks, it’s an exciting alternative for producing renewable materials for clean energy powered devices.</p> <p><img id="cosmos-post-tracker" style="opacity: 0; height: 1px!important; width: 1px!important; border: 0!important; position: absolute!important; z-index: -1!important;" src="https://syndication.cosmosmagazine.com/?id=200509&amp;title=Producing+electricity+from+your+sweat+might+be+key+to+next+wearable+technology" width="1" height="1" /></p> <div id="contributors"> <p><em><a href="https://cosmosmagazine.com/technology/electricity-from-sweat-biofilm/" target="_blank" rel="noopener">This article</a> was originally published on <a href="https://cosmosmagazine.com" target="_blank" rel="noopener">Cosmos Magazine</a> and was written by <a href="https://cosmosmagazine.com/contributor/imma-perfetto" target="_blank" rel="noopener">Imma Perfetto</a>. Imma Perfetto is a science writer at Cosmos. She has a Bachelor of Science with Honours in Science Communication from the University of Adelaide.</em></p> <p><em>Image: </em><em>Liu et al., doi.org/10.1038/s41467-022-32105-6</em></p> </div>

Technology

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High tech shortages in the future as coronavirus shuts down manufacturers

<p>There are now <a href="https://www.who.int/docs/default-source/coronaviruse/situation-reports/20200212-sitrep-23-ncov.pdf?sfvrsn=41e9fb78_2">more than 45,000</a> confirmed cases of the coronavirus dubbed COVID-19 by the World Health Organization, and the disease has caused at least 1,115 deaths. The impact of the virus is now reaching way beyond public health: China is at the heart of global manufacturing, and as supply chains suffer, <a href="https://www.logisticsmgmt.com/article/coronavirus_and_the_global_supply_chain_rising_panic_part">panic</a> is beginning to set in.</p> <p>In many provinces across China the government has urged hundreds of millions of workers to <a href="https://www.afr.com/world/asia/virus-death-toll-above-900-as-workers-told-to-stay-home-20200210-p53zbr">stay home</a> to help reduce the spread of the virus. As a result, many factories have stayed closed since the Lunar New Year holiday in late January, halting the production of products and parts destined for countries around the world, including Australia.</p> <p>Apple is one of the most high-profile companies affected, with its <a href="https://www.wsj.com/amp/articles/rapid-spread-of-coronavirus-tests-apples-china-dependency-11580910743">manufacturing partner Foxconn hitting a lengthy production delay</a>, but they are far from alone.</p> <p><strong>Global supply chains, global problems</strong></p> <p>The sectors hit hardest <a href="https://www.forbes.com/sites/stevebanker/2020/02/10/global-high-tech-supply-chains-disrupted-by-the-coronavirus/amp/">appear to be</a> high-tech electronics, pharmaceuticals and the automotive industry.</p> <p>Globalised supply chains and just-in-time manufacturing mean many seemingly unrelated products are vulnerable to pauses in the flow of goods from China.</p> <p>It only takes one small missing part to bring entire supply chains to a standstill. If a tyre manufacturer in the United States doesn’t receive valves from a supplier in China, a car plant in Germany won’t receive any tyres, and therefore can’t ship finished cars to its customers.</p> <p>Something similar happened to automotive giant Hyundai, which had to <a href="https://www.nytimes.com/2020/02/04/business/hyundai-south-korea-coronavirus.html">suspend all operations</a> at its manufacturing plant in South Korea due to a lack of parts from China.</p> <p>Even tech companies such as Samsung, Google and Sony, which have moved their factories out of China in recent years, are <a href="https://qz.com/1800540/how-coronavirus-is-upending-the-tech-industrys-supply-chain/">being affected</a>. They still rely on China for many components such as sensors or smartphone screens.</p> <p>It is not just large businesses that will feel these effects. Many small businesses around the world also source products and parts from China.</p> <p>The supply of these is now uncertain, with no sign yet as to when normal service may resume. For products and parts that are still being manufactured in China, new enhanced screening measures at all Chinese border crossings are likely to cause further delays.</p> <p><strong>How will Australia be affected?</strong></p> <p>The effects of the coronavirus are also being felt in Australia. China is our largest trading partner for both imports and exports. According to the United Nations Comtrade database, <a href="https://tradingeconomics.com/australia/imports/china">Australian imports from China</a> were valued at A$85.9 billion in 2018. The biggest product categories were electronics and electrical equipment, making up A$19.8 billion, and machinery, which accounts for another A$15.7 billion.</p> <p>Moreover, <a href="https://www.aph.gov.au/About_Parliament/Parliamentary_Departments/Parliamentary_Library/pubs/BriefingBook44p/China">90% of all Australia’s merchandise imports</a> are from China, and half of those are engineering products such as office and telecommunications equipment.</p> <p>Besides the well-publicised impact on airlines, universities and tourism, Australian construction companies are warning clients of upcoming project delays as a result of forecast disruptions in materials sourced from China. Aurizon, Australia’s largest rail operator, has said the coronavirus will delay the arrival of <a href="https://www.afr.com/companies/retail/coronavirus-fallout-hits-australian-companies-20200210-p53zfc">66 new rail wagons</a> being made in Wuhan, the city at the epicentre of the outbreak.</p> <p><strong>Expect shortages of high-tech goods</strong></p> <p>Product shortages could also soon be visible on retailers’ shelves, with electronics stores such as JB Hi-Fi and Harvey Norman expected to experience <a href="https://www.theguardian.com/world/2020/feb/12/coronavirus-fallout-could-leave-australian-tourism-and-retail-sector-in-the-doldrums">significant disruption</a> to their supply of computers, televisions and smartphones.</p> <p>When shortages like this occur, customers will struggle to buy the products they want, when they want them. The only channels available might be third-party resellers offering highly inflated prices. In extreme cases, supply shortages like these can also lead to <a href="http://personal.cb.cityu.edu.hk/biyishou/Consumer_panic_buying.pdf">panic buying</a> and stockpiling.</p> <p><strong>More uncertainty ahead</strong></p> <p>It is commonly said that “when China sneezes, the world catches a cold”. So what is the long-term diagnosis for the coronavirus breakout, and what will the economic symptoms be?</p> <p>As so much is still unknown about COVID-19, with no vaccine or formal means of preventing it spreading having emerged yet, it’s too early to predict what the full impact will be.</p> <p>For many industries the next few months will bring high levels of uncertainty, with disruptions certain to continue, before recovery programs can start to gain traction.</p> <p>This is obviously a worry for many organisations, but could also be a period of new opportunity for others, as the world comes to terms with this latest global health crisis. Supply chains that are agile enough to react quicker than their competitors’, or those with more robust risk management plans, might find themselves gaining greater market share as a result of this crisis.<!-- Below is The Conversation's page counter tag. Please DO NOT REMOVE. --><img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important; text-shadow: none !important;" src="https://counter.theconversation.com/content/131646/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /><!-- End of code. If you don't see any code above, please get new code from the Advanced tab after you click the republish button. The page counter does not collect any personal data. More info: http://theconversation.com/republishing-guidelines --></p> <p><em><a href="https://theconversation.com/profiles/john-l-hopkins-255434">John L Hopkins</a>, Theme Leader (Future Urban Mobility), Smart Cities Research Institute, <a href="https://theconversation.com/institutions/swinburne-university-of-technology-767">Swinburne University of Technology</a></em></p> <p><em>This article is republished from <a href="http://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/high-tech-shortages-loom-as-coronavirus-shutdowns-hit-manufacturers-131646">original article</a>.</em></p>

Technology

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Travelling soon? Never do this with electronic items when boarding a flight

<p><span style="font-weight: 400;">Many travellers when going on a plane take a variety of electronic items with them, including mobile phones, iPads, laptops, Kindles … the list never ends.</span></p> <p><span style="font-weight: 400;">However, there is one thing you should never do whilst boarding a plane with your devices.</span></p> <p><span style="font-weight: 400;">The current travel advice stipulates that you should never travel with any electronic items that have no battery left and cannot be turned on.</span></p> <p><a href="https://www.britishairways.com/travel/home/public/en_au"><span style="font-weight: 400;">British Airways </span></a><span style="font-weight: 400;">describes essential hand luggage packing tips on their website.</span></p> <p><span style="font-weight: 400;">BA states: “Charge any electrical or battery-powered devices such as phones, tablets, e-books and laptops. Airport security might ask you to switch them on.”</span></p> <p><span style="font-weight: 400;">This is also the case in the USA, as the Transportation Security Administration (TSA) announced that it would not allow mobile phones or other electronic devices on US-bound planes unless travellers were able to turn them on at the request of security staff. This was announced in 2014.</span></p> <p><span style="font-weight: 400;">It was ruled that anyone who had a powerless device would be barred from boarding their US flight and would have to reschedule the flight, even if the passenger offered to give up the item or send it separately.</span></p> <p><span style="font-weight: 400;">The UK Department of Transport (DfT) quickly followed suit, saying:</span></p> <p><span style="font-weight: 400;">“In line with the US advice, passengers on some routes into and out of the UK may now also be required to show that electronic devices in their hand luggage are powered up or face not being allowed to bring the device onto the aircraft.</span></p> <p><span style="font-weight: 400;">"Passengers flying into or out of the UK are therefore advised to make sure electronic devices being carried in their hand luggage are charged before they travel."</span></p> <p><span style="font-weight: 400;">Domestic flights within Australia and New Zealand have not been impacted by this change, but as it affects a wide range of airlines, including British Airways, Qantas, Virgin Australia, Emirates and Delta as well as other carriers that fly to, from and via the UK and US, it’s better to be safe instead of sorry.</span></p>

Travel Trouble

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CHOICE reveals: How long your appliances should really last

<p>As consumers we’re lucky that we have an abundance of appliance choices to choose from to suit every budget. With toasters starting at $20 reaching all the way up to $150, there is something out there for everyone.</p> <p>But just how long should you expect an affordable appliance to last in comparison to its higher-end counterpart? <em><a rel="noopener" href="https://www.choice.com.au/" target="_blank">Choice</a></em> has released new guidelines, showcasing the “reasonable” life expectancy of household appliances.</p> <p><iframe src="https://www.facebook.com/plugins/post.php?href=https%3A%2F%2Fwww.facebook.com%2Fchoiceaustralia%2Fposts%2F10156656490116163&amp;width=500" width="500" height="669" style="border: none; overflow: hidden;" scrolling="no" frameborder="0" allowtransparency="true" allow="encrypted-media"></iframe></p> <p>According to the consumer group, while your cheap toaster could die out within two years, you can expect your expensive fridge to last over 10 years.</p> <p>The results of the research were based around 1000 people who took part in the survey, along with in-house product testing and manufacturer feedback.</p> <p>“In most cases the lifetime for electrical appliances should go way beyond the one-to-two-year manufacturer’s warranty,” said spokeswoman for Choice, Nicky Breen.</p> <p>If a product turns out to be faulty, shoppers have the right to a full refund or replacement under New Zealand Consumer Protection. The rule applies regardless of the consumer being within the official warranty period.</p> <p>But according to Ms Breen, it isn’t that simple as consumer guarantees tend to be a “little confusing”.</p> <p>“The law says you’re entitled to a remedy if a fault develops within a reasonable amount of time, but it’s not clear what that reasonable time is,” she said</p> <p>“You may buy a TV or fridge and it develops a fault within a year or two, you take it back to the retailer and there’s an impasse. What we’re doing is urging people to use these guidelines.”</p> <p>According to the results of the survey, a fridge should last around six to 13 years, while washing machines and dishwashers have a lifespan of five to 11 years. A laptop will give you four to eight years depending on how expensive it is, and a smartphone should last between three to six years.</p> <p>“Someone should start a GoFundMe to put this on billboards outside of Harvey Norman and The Good Guys,” said Facebook user, Kristen Hall.</p> <p>Others compared appliances today to the ones sold in the past. “Washing machines, the prehistoric ones, lasted and lasted, 25-plus years and still working,” said Helen Valen.</p> <p>“Had to replace them just because we got sick of waiting for them to fail and they didn’t look their best anymore. Same with stoves. So, it’s not the technology, it’s the design for failure/obsolescence business model."</p> <p>Naomi Agar pointed out that her mum’s fridge had to be replaced last year, after 47 years. “My microwave purchased in “’88 is still going”, she said.</p> <p>But not everyone was convinced as some pointed out the discrepancies in the survey results. “The mobile phone one is a joke,” Karla McClelland said. “The latest Samsung and Apple phones don’t last more than two years before something stuffs up.”</p> <p>Adam Scott questioned the life expectancy of a laptop saying, “Where did you get that figure? The life expectancy of a spinning drive is two years, three maximum,” he said.</p> <p>“The heat paste on the CPU will be chalk after a few years, leading to the CPU and GPU overheating. That’s if the power brick hasn’t died by then. Oh, and the battery will have well and truly died by then.” </p> <p>Do you agree with these results? Let us know in the comments below. </p>

Technology

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What’s covered by your travel insurance

<p>The recent ban affecting travellers flying to the USA and UK on flights departing from a number of Middle Eastern ports has implications for those who travel with electronic items, especially business travellers.</p> <p>This new ruling requires passengers departing from the affected ports to pack laptops, tablets, e-readers, cameras, portable DVD players and electronic game units larger than a smartphone in their checked luggage rather than carrying them on board as hand luggage.</p> <p>When that happens, it is unlikely that a standard travel insurance policy would provide cover in the event that these items are stolen or damaged, since checked luggage is deemed to be the responsibility of the airline.</p> <p>Typical is the American Express travel insurance product disclosure statement, which says "We will not pay… for camera equipment or Electronic Equipment whilst carried in or on any Conveyance, unless they accompany You as personal cabin baggage."</p> <p>According to Natalie Ball, director of Compare Travel Insurance, "While the carry-on electronics ban will inconvenience a vast number of travellers, insurers are already in talks to revise their policies in light of this ban.</p> <p>"Travellers should not be held to ransom by these stringent security measures and insurers are well aware that they must adapt to redress the situation. Keeping your belongings under close watch is the best way to go. In keeping with the current electronics ban this may no longer be possible. If possible, consider leaving your more expensive electronics behind."</p> <p><em>Written by Michael Gebicki. First appeared on <a href="http://Stuff.co.nz" target="_blank"><strong><span style="text-decoration: underline;">Stuff.co.nz</span></strong></a>.</em></p> <p><em><strong>Have you arranged your travel insurance yet? Tailor your cover to your needs and save money by not paying for things you don’t need. <span style="text-decoration: underline;"><a href="https://elevate.agatravelinsurance.com.au/oversixty?utm_source=over60&amp;utm_medium=content&amp;utm_content=link1&amp;utm_campaign=travel-insurance">To arrange a quote, click here</a></span>. For more information about Over60 Travel Insurance, call 1800 622 966.</strong></em></p>

Travel Tips

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US to ban electronic devices on flights

<p>US authorities are reportedly planning to ban passengers travelling on certain US-bound foreign flights from carrying electronic devices larger than a mobile phone.</p> <p>The new requirement from the Transport Security Administration (TSA) prohibits passengers from bringing items like laptops, iPads, Kindles and cameras onboard, although doesn’t specify if flight crews are included in the ban.</p> <p>The ban is related to people flying into the US from the following airports:</p> <ul> <li>Queen Alia in Jordan</li> <li>Cairo International in Egypt</li> <li>Ataturk International in Turkey</li> <li>King Abudlaziz and King Khalid in Saudi Arabia</li> <li>Kuwait International in Kuwait, Mohammaed V in Morocco</li> <li>Doha International in Qatar</li> <li>Dubai international and Abu Dhabi international in the United Arab Emirates.</li> </ul> <p>The airlines affected by the ban include Royal Jordainia, Egyptair, Turkish airlines, Saudia airlines, Kuwait airways, Royal Air Morocco, Qatar Airways, Emirates and Etihad.</p> <p>Royal Jordanian was among the first airlines to respond, posting on Monday:</p> <blockquote class="twitter-tweet"> <p dir="ltr">Attention all passengers ⚠️ <a href="https://t.co/HCNDcjcdi1">pic.twitter.com/HCNDcjcdi1</a></p> — Royal Jordanian (@RoyalJordanian) <a href="https://twitter.com/RoyalJordanian/status/844267588817424384">March 21, 2017</a></blockquote> <p>Airlines were reportedly circulated an email on Monday and given 96 hours to comply with the new ruling, which US officials have said is in response to a terrorism threat.</p> <p>The White House has declined to comment.</p> <p>What do you think of the new ruling? </p>

International Travel

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Man brings new life to old electronics with beautiful sculptures

<p>Electronics are one of the fastest-growing types of waste in the world, with many of our favourite devices only having a lifespan of three or four years. With this in mind, one artist has found a unique way to minimise his environmental footprint by recycling old, outdated televisions, computers and other devices into stunning insect sculptures.</p> <p>“They look very futuristic, they look very mechanical,” Hobart artist Steve Wakeling told the <a href="http://www.abc.net.au/news/2016-08-29/making-bug-sculpture-art-from-old-electronics/7794378" target="_blank"><strong><span style="text-decoration: underline;">ABC</span></strong></a>. “The wiring and the miniature detail that goes into the parts of a DVD player is amazing. They're very pretty.</p> <p>“The parts that go into the bugs, they're rare parts and they're getting rarer. Pretty soon you won't see them unless they're in art.”</p> <p>After looking through the gallery above, you may be shocked to learn that Wakeling has no formal art training, just an affinity for creating shapes. “Once you get the basic shapes together to look like a head, then you can add the fine detail like the horns, the eyes, the nose and everything.”</p> <p>To see more of his pretty sculptures, click here, and tell us in the comments below, have you ever reinvented an old object into something new?</p> <p><em>Images: Carol Rääbus / 936 ABC Hobart</em></p> <p><strong>Related links:</strong></p> <p><a href="/entertainment/art/2016/08/works-of-art-made-with-plants/"><strong><em><span style="text-decoration: underline;">Incredible works of art made with only plants</span></em></strong></a></p> <p><a href="/entertainment/art/2016/08/woman-with-ms-turns-mris-into-art/"><span style="text-decoration: underline;"><em><strong>Woman diagnosed with MS turns her brain scans into art</strong></em></span></a></p> <p><a href="/entertainment/art/2016/05/artist-creates-fashion-designs-with-food/"><span style="text-decoration: underline;"><em><strong>Artist creates incredible fashion designs using food</strong></em></span></a></p>

Art