Wed, May 24, 2017 | updated 09:33 PM IST

Is invisibility cloak on its way to reality?

Updated: Jul 16, 2016 09:42 IST      
Is invisibility cloak on its way to reality?

Washington D.C, Jul 16 (ANI): Invisibility cloak has hidden Harry Potter and hobbits from view and now, this sci-fi staple may be moving closer to reality!

Scientists at Queen Mary University of London (QMUL) have made an object disappear by using a composite material with nano-size particles that can enhance specific properties on the object's surface.

Researchers demonstrated for the first time a practical cloaking device that allows curved surfaces to appear flat to electromagnetic waves.

While the research might not lead to the invisibility cloak made famous in J.K Rowling's 'Harry Potter' novels quite yet, this practical demonstration could result in a step-change in how antennas are tethered to their platform. It could allow for antennas in different shapes and sizes to be attached in awkward places and a wide variety of materials.

Co-author Yang Hao said: "The design is based upon transformation optics, a concept behind the idea of the invisibility cloak. Previous research has shown this technique working at one frequency. However, we can demonstrate that it works at a greater range of frequencies making it more useful for other engineering applications, such as nano-antennas and the aerospace industry."

The researchers coated a curved surface with a nanocomposite medium, which has seven distinct layers (called graded index nanocomposite) where the electric property of each layer varies depending on the position. The effect is to 'cloak' the object: such a structure can hide an object that would ordinarily have caused the wave to be scattered.

The underlying design approach has much wider applications, ranging from microwave to optics for the control of any kind of electromagnetic surface waves.

First author Luigi La Spada said: "The study and manipulation of surface waves is the key to develop technological and industrial solutions in the design of real-life platforms, for different application fields.

Spada added, "We demonstrated a practical possibility to use nanocomposites to control surface wave propagation through advanced additive manufacturing. Perhaps most importantly, the approach used can be applied to other physical phenomena that are described by wave equations, such as acoustics. For this reason, we believe that this work has a great industrial impact."

The study appears in Scientific Reports. (ANI)

DNA may have only modest impact on sexual assault arrests

Updated: May 24, 2017 19:06 IST     

Washington D.C. [USA], May 24 (ANI): Most arrests in sexual assault cases occur before crime laboratory results are available, a new study found, suggesting that DNA testing may influence arrests in just a small number of cases.

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Your eyes can reveal if you have the post-disaster blues

Updated: May 24, 2017 16:01 IST     

Washington D.C. [USA], May 24 (ANI): Turns out, your eyes really are the windows to your soul as a recent study has found that depression risk following a natural disaster can be predicted via pupil dilation.

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Size of whale has evolved in the recent past!

Updated: May 24, 2017 11:03 IST     

New Delhi [India], May 7 (ANI): Interestingly, blue whales, the largest vertebrate animal that ever lived, have recently evolved into giants.

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Washington D.C. [USA], May 7 (ANI): A team of researchers discovered that deep portions of earth's mantle might be as hot as it was more than 2.5 billion years ago.

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Death by Kissing Bugs more common than thought: Study

Updated: May 22, 2017 13:26 IST     

New York [USA], May 22 (ANI): Kissing Bugs, who like to bite humans around their lips and faces, as they sleep, are more dangerous than you have ever thought of.

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Now, deaf-blind can 'watch' television with this technology

Updated: May 21, 2017 14:15 IST     

Washington D.C. [USA], May 21 (ANI): In a first, researchers have developed a new technology that types Braille or subtitles of television channels in real time and helps deaf-blind people "watch" television without intermediaries.

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Planting trees cannot replace cutting CO2 emissions!

Updated: May 18, 2017 17:15 IST     

New Delhi [INDIA], May 18 (ANI): According to a new study, growing plants and then storing CO2, taken up from the atmosphere, is no viable option to counteract unmitigated emissions from fossil fuel burning.

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Washington D.C. [USA], May 17 (ANI): Large families and strong social ties may help female rhesus macaques live longer, by reducing their chances of dying by 2.3 percent in one year, reveals a new study.

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Turns out, 'drunk you' not that different from 'sober you'

Updated: May 16, 2017 07:21 IST     

Washington D.C. [USA], May 16 (ANI): Your personality may change when you drink, but less than you think, according to a recent study.

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Researchers find ways to make solar energy affordable

Updated: May 14, 2017 21:20 IST     

Washington D.C. [USA], May 14 (ANI): In a recent study, researchers used data science to determine and predict the effects of exposure to weather and other conditions on materials in solar panels.

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Washington D.C. [USA], May 14 (ANI): Just like students choose their flatmates, Briton researchers have found that males of great tit birds are quiet selective when it comes to neighbourhood and opt to nest together with like-minded neighbours to improve their chances of survival.

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Washington D.C. [USA], May 13 (ANI): A group of international scientists studying China's Yellow River has come up with an analytic formula that could help officials better predict and prevent its all-too-frequent floods, which threaten as many as 80 million people.

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'Winged' snakes once slithered the Earth

Updated: May 13, 2017 12:54 IST     

Washington D.C. [USA], May 13 (ANI): A mysterious 5-million-year-old "winged serpent" has finally been identified as a new species of ancient snakes.

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Newly-found distant 'warm Neptune' has primitive atmosphere

Updated: May 12, 2017 10:33 IST     

Washington D.C. [USA], May 12 (ANI): A team of scientists has discovered a distant Neptune-sized planet that has clear skies and an atmosphere almost entirely composed of hydrogen and helium, scientists have discovered.

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New 3-D printed 'bionic skin' lets robots 'feel'

Updated: May 11, 2017 12:27 IST     

Washington D.C. [USA], May 11 (ANI): A team of researchers has come up with a revolutionary process for 3D printing stretchable electronic sensory devices that could give robots the ability to feel their environment.

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Washington D.C. [USA], May 11 (ANI): African lion is the next big cat species to become extinct as they have lost most of their prey, according to a recent study.

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The hidden cost of helping your co-workers

Updated: May 10, 2017 19:56 IST     

Washington D.C. [USA], May 10 (ANI): If you're a co-worker who helps other, you are likely to feel good, but are those good feelings coming at a price?

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Scientists track brain developments of newborn babies

Updated: May 10, 2017 15:25 IST     

Washington D.C. [USA], May 10 (ANI): Researchers can now easily study how the human brain develops as scientists have published ground-breaking scans of newborn babies' brains.

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Device to check ripeness of tomatoes?

Updated: May 10, 2017 12:30 IST     

Washington D.C. [USA], May 10 (ANI): Future farmers may be zapping tomatoes with lasers!

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Secret behind stealthy solar storms revealed

Updated: May 09, 2017 09:41 IST     

Washington D.C.[USA], May 9 (ANI): While mostly massive solar storms are often preceded by some kind of warning, sometimes mysterious slower-moving 'stealth' storms appear seemingly out of nowhere, leaving scientists baffled.

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