Scientists develop clothing that can communicate
New York, Aug 12 : Researchers have, for the first time, produced fibres with embedded electronics that are so flexible they can be woven into soft washable fabrics and made into wearable clothing.
Embedding high speed optoelectronic semiconductor devices, including light-emitting diodes (LEDs) and diode photodetectors, into washable fabrics also makes it possible to produce clothing that communicates optically with other devices.
This discovery, described in the journal Nature, could unleash a new 'Moore's Law' for fibres, in other words, a rapid progression in which the capabilities of fibres would grow rapidly and exponentially over time, said researchers from the Massachusetts Institute of Technology (MIT) in Boston.
The key breakthrough for producing these new fibres was to add to the preform light-emitting semiconductor diodes the size of a grain of sand, and a pair of copper wires a fraction of a hair's width.
When heated in a furnace during the fibre-drawing process, the polymer preform partially liquifies, forming a long fibre with the diodes lined up along its centre and connected by the copper wires.
"We are anticipating the emergence of a 'Moore's law' analogue in fibres in the years ahead," said Yoel Fink from the varsity.
"It is already allowing us to expand the fundamental capabilities of fabrics to encompass communications, lighting, physiological monitoring, and more. In the years ahead, fabrics will deliver value-added services and will no longer just be selected for aesthetics and comfort," Fink added.
In this case, the solid components were two types of electrical diodes made using standard microchip technology: LEDs and photosensing diodes.
The resulting fibres were then woven into fabrics, which were laundered 10 times to demonstrate their practicality as possible material for clothing.
One of the advantages of incorporating function into the fibre material itself is that the resulting fibre is inherently waterproof.
To demonstrate this, the team placed some of the photodetecting fibres inside a fish tank.
A lamp outside the aquarium transmitted music through the water to the fibres in the form of rapid optical signals.
The fibres in the tank converted the light pulses -- so rapid that the light appears steady to the naked eye -- to electrical signals, which were then converted into music. The fibres survived in the water for weeks.
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Deepika Kumari leads Indian recurve archery team to dramatic World Cup gold
Shanghai (PTI): The Indian trio of Deepika Kumari, Ankita Bhakat and teenager Kumkum Mohod held their nerve in a tense shoot-off to beat home favourites China and clinch the women's recurve team gold medal at the Archery World Cup Stage 2 here on Sunday.
In a final marked by fluctuating fortunes, India edged past the home side 5-4 (28-26) in the shoot-off after the four-set regulation ended 4-4.
The victory was especially sweeter as India had earlier stunned record 10-time Olympic champions South Korea in the semifinals en route to their first World Cup women's team gold since 2021.
Deepika, who was also part of India's World Cup-winning teams in Guatemala City and Paris in 2021, now has seven World Cup team gold medals to her name since 2010.
It was also the Indian women recurve team's first World Cup medal in three years, its previous podium finish coming in Stage 4 in Paris in 2023 where Ankita was a member of the winning team.
India's campaign in Shanghai has thus already yielded two medals after compound archer Sahil Jadhav opened the country's account, securing a bronze on Saturday.
India also remained in contention for another podium finish later in the day with recurve archer Simranjeet Kaur set to compete in the semifinals. She is a win away from her maiden individual World Cup medal.
Travelling without a full-time national coach amid the continuing impasse over appointments, it was the vastly experienced Deepika who led from the front, constantly motivating her teammates during breaks and changeovers.
Prafull Dange, who was the designated women's recurve coach after his ward Kumkum topped the national trials, largely remained in the background as Deepika guided the side through the pressure moments against a hostile home crowd and vocal Chinese support staff.
Against a young Chinese side comprising Zhu Jingyi, Huang Yuwei and teenage archer Yu Qi, who all made their World Cup debuts only last year, India looked in control initially but nearly let the match slip after taking the opening set (54-53).
Shooting last in the Indian order, Deepika set the tone with successive 10s as India edged the first set despite Ankita (8-8) and 17-year-old Kumkum (10-8) putting up an inconsistent show.
Deepika continued her fine rhythm in the second set with another perfect 10 as India briefly held a one-point advantage (28-27) midway through the end. But China responded strongly with two 9s and a 10 in their final three arrows of the second set to post 55.
Ankita replied with a 9, but Kumkum managed only an 8, leaving Deepika needing a 10 to level the set.
The four-time Olympian, however, slipped to a 7 as India lost the set 52-55 and China drew level at 2-2.
The hosts then moved ahead in the third set. The teams were initially tied at 56, but a review upgraded China's final arrow from 8 to 9, handing them the set 57-56 and a 4-2 lead.
India appeared on the verge of defeat in the fourth set despite Deepika rediscovering her touch with two 10s. Kumkum's final arrow landed in the 7-ring as India posted a modest 54.
China required two 10s and a 9 from their last three arrows to seal the match.
Zhu and Huang delivered perfect 10s, leaving 18-year-old Yu Qi needing a 9 for victory in front of the home crowd.
But the youngster shot an 8, allowing India a dramatic escape and forcing a shoot-off.
The Indians peaked at the right moment in the decider. Ankita opened with a 9, Kumkum followed with a superb 10, and Deepika calmly delivered a 9 when only an 8 was needed to seal the title.
