Friday October 19, 2018
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Your body could soon power wearable devices

The study described a small tab (1.5 centimetres long, by one centimetre wide). It delivered a maximum voltage of 124 volts, a maximum current of 10 microamps and a maximum power density of 0.22 millwatts per square centimetre.

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The tab consists of two thin layers of gold, with polydimethylsiloxane (also called PDMS — a silicon-based polymer used in contact lenses, Silly Putty and other products) sandwiched in between. Wikimedia Commons
The tab consists of two thin layers of gold, with polydimethylsiloxane (also called PDMS — a silicon-based polymer used in contact lenses, Silly Putty and other products) sandwiched in between. Wikimedia Commons
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Researchers have developed a metallic tab which, when connected to a human body, is capable of generating electricity from bending a finger and other simple movements.

According to a research project led by the University at Buffalo, New York, and Institute of Semiconductors (IoP) at the Chinese Academy of Science (CAS), the tab — a triboelectric nanogenerator — can convert mechanical energy into electrical energy for electronic devices.

“The human body is an abundant source of energy. We thought: ‘Why not harness it to produce our own power?’” said lead author Qiaoqiang Gan, associate professor at the University at Buffalo.

The tab was detailed in the journal Nano Energy. Triboelectric charging occurs when certain materials become electrically charged after coming into contact with a different material. Most everyday static electricity is triboelectric.

Also Read: Scientists Use Pocket-size Device to Map Human Genetic Code

The tab consists of two thin layers of gold, with polydimethylsiloxane (also called PDMS — a silicon-based polymer used in contact lenses, Silly Putty and other products) sandwiched in between.

The tab was detailed in the journal Nano Energy. Wikimedia Commons
The tab was detailed in the journal Nano Energy. Wikimedia Commons

One layer of gold is stretched, causing it to crumple upon release and create what looks like a miniature mountain range. When that force is reapplied, for example, from a finger bending, the motion leads to friction between the gold layers and PDMS.

“This causes electrons to flow back and forth between the gold layers. The more friction, the greater the amount of power is produced,” said Yun Xu, a professor at the IoP.

The study described a small tab (1.5 centimetres long, by one centimetre wide). It delivered a maximum voltage of 124 volts, a maximum current of 10 microamps and a maximum power density of 0.22 millwatts per square centimetre.

Also Read: Mitra: An Indian Robot That Greets You With A ‘Namaste’

That is not enough to quickly charge a smartphone, but it lit 48 red LED lights simultaneously. The team is planning to use larger pieces of gold, which when stretched and folded together are expected to deliver even more electricity.

The researchers are also working on developing a portable battery to store energy produced by the tab. They envision the system serving as a power source for various wearable and self-powered electronic devices. (IANS)

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The Latest Gold Bangles Designs With Price: The Latest In The Line

An assortment of gold bangles is truly appealing to the eyes.

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At times, even the guests bring up gold bangles to gift to the bride. Pixabay

Men and women equally love and adore gold ornaments, and buy them according to their budgets. Different kinds of metals are used for making ornaments and gold is one of the best materials. It is alluring and expensive metal so much appreciated for its quality, look and sheen. Gold, the precious metal, is used for making a variety of jewelry in different designs, patterns and styles. Among so many kinds of gold jewelry items, gold bangles are the most popular. Gold bangles are popular type of jewelry worn by most women today. It is mostly Indian women who adorn their wrists with bangles and indeed traditional Indian jewelry is not complete without bangles.

gold jewelry
Gold Jewellery in display at a shop, Wikimedia Commons

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If you are a parent about to wed your daughter, then you may look online for exquisite pieces of gold bangles along with price and weight. Online gold stores have made it easy to shop for gold bangles from the comfort of one’s home.

gold jewelry
Among so many kinds of gold jewelry items, gold bangles are the most popular. Pixabay

Bangles are symbolic of culture, tradition and customs. Women in this century are no more guided by age old beliefs when searching for gold jewelry. There is a kind of love affair between young women and gold jewelry in the current times. They are now putting forward their preference and choices in front before making any purchase.

Custom jewelry designs at its best

Every jewelry lover or jewelry shopper is open to trying out new designs, styles and patterns of gold jewelry. There is more demand for engraving and jewelry customization. With the online stores, there isn’t any dearth of fusion gold bangles, traditional gold bangles and contemporary designs. Latest gold designs are thin and delicate gold bangles that are gifted by moms to their daughter-in-laws. Along with such jewelry, you can gift charm bracelets to be adorned on usual occasions.

An assortment of gold bangles is truly appealing to the eyes. Buy them at best prices online.