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    Researchers discover Security Loophole allowing Attackers to use Wi-Fi to See Through Walls

    November 4, 2022, Categories  Physics, Technology/Electronics

    Researchers discover security loophole allowing attackers to use Wi-Fi to see through walls
    Overview of Wi-Peep. Credit: Proceedings of the 28th Annual International Conference on Mobile Computing And Networking (2022). DOI: 10.1145/3495243.3560530

    A research team based out of the University of Waterloo has developed a drone-powered device that can use Wi-Fi networks to see through walls. The device, nicknamed Wi-Peep, can fly near a building and then use the inhabitants’ Wi-Fi network to identify and locate all Wi-Fi-enabled devices inside in a matter of seconds.

    The Wi-Peep exploits a loophole the researchers call polite Wi-Fi. Even if a network is password protected, smart devices will automatically respond to contact attempts from any device within range...

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    Polarized X-rays Reveal Shape, Orientation of Extremely Hot Matter around BlackHole

    November 4, 2022, Categories  Astronomy/Space

    CygX-1 black hole
    An artist’s impression of the Cygnus X-1 system, with the black hole appearing in the center and its companion star on the left. New measurements from Cygnus X-1, reported Nov. 3 in the journal Science, represent the first observations of a mass-accreting black hole from the Imaging X-Ray Polarimetry Explorer (IXPE) mission, an international collaboration between NASA and the Italian Space Agency. (Image: John Paice)

    Researchers’ recent observations of a stellar-mass black hole called Cygnus X-1 reveal new details about the configuration of extremely hot matter in the region immediately surrounding the black hole.

    Matter is heated to millions of degrees as it is pulled toward a black hole. This hot matter glows in X-rays...

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    Researchers studying new way to Heal Diabetic Wounds by Activating ‘Hidden’ Mechanism in the Body

    November 4, 2022, Categories  Health/Medical, Biology/Biotechnology

    Researchers at Indiana University School of Medicine are looking for ways to heal wounds by using a healing protein that is active in fetuses, but largely inactive in adults and absent in diabetic adults.

    “We already know from previous studies at other institutions that if a fetus is wounded, it can regenerate the tissue, or repair it to be like new,” said Chandan K. Sen, PhD, associate vice president of military and applied research, the J. Stanley Battersby chair and distinguished professor of surgery and director of the Indiana Center for Regenerative Medicine and Engineering at Indiana University School of Medicine. “But after birth, such regenerative wound healing ability is lost. Healing in adults is relatively inefficient often associated with undesirable scar formation.”

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    Research Team develops Aqueous Rechargeable Batteries based on Zinc Anodes

    November 4, 2022, Categories  Technology/Electronics, Chemistry/Nanotechnology

    Water for drinking? Nope, water for batteries
    Schematic diagram of an aqueous zinc battery stabilized by a protective polymer layer. Credit: POSTECH

    Can we survive three minutes without air or three days without water? How about without batteries? Imagine not having a battery for three hours.

    Lightweight, high-capacity lithium-ion batteries are widely used in mobile phones, laptops, and other necessities in today’s world. However, the organic electrolytes in conventional lithium-ion batteries are highly flammable, leading to fatal fires or explosions. As lithium-ion batteries are widely used in our lives, such accidents can cause direct damage to users, which has led to a demand for a safer battery system.

    Professor Soojin Park and Gyujin Song (Post-doc fellow) in the Department of Chemistry and Ph.D...

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