Sound Waves Levitate Multiple Objects


Researcher testing the acoustic traps generated by the Holographic Acoustic TweezersSergio Larripa, Asier Marzo, Bruce Drinkwater © 2018

Future technology for contactless medical procedures. In the perhaps not so distant future, surgeons could perform a range of medical procedures all without touching the patient, thanks to advancements in ‘acoustic tweezers’.

Surgeons won’t be shrunk and sent into the body like in the 1960s Sci-Fi, Fantastic Voyage, but could program a specialised array of mini-speakers to create an intricate sound field that ‘traps’ and manipulates selected objects in ‘acoustic tweezers’ for manipulation within tissue.

Advancements in acoustic tweezers from Professor Bruce Drinkwater in the Department of Mechanical Engineering, University of Bristol, and his...

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Faint Starlight in Hubble images reveals distribution of Dark Matter


Abell S1063, a galaxy cluster, was observed by the NASA/ESA Hubble Space Telescope as part of the Frontier Fields program. The huge mass of the cluster — containing both baryonic matter and dark matter — acts as cosmic magnification glass and deforms objects behind it. In the past astronomers used this gravitational lensing effect to calculate the distribution of dark matter in galaxy clusters.
Credit: NASA, ESA, and M. Montes (University of New South Wales, Sydney, Australia)

Astronomers using data from the NASA/ESA Hubble Space Telescope have employed a revolutionary method to detect dark matter in galaxy clusters...

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E-Bandage Generates Electricity, Speeds Wound Healing in Rats


A wound covered by an electric bandage on a rat’s skin (top left) healed faster than a wound under a control bandage (right).
Credit: American Chemical Society

Skin has a remarkable ability to heal itself. But in some cases, wounds heal very slowly or not at all, putting a person at risk for chronic pain, infection and scarring. Now, researchers have developed a self-powered bandage that generates an electric field over an injury, dramatically reducing the healing time for skin wounds in rats. They report their results in ACS Nano.

Chronic skin wounds include diabetic foot ulcers, venous ulcers and non-healing surgical wounds...

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3D-printed Robot Hand Plays the Piano


Robot hand playing the piano.
Credit: Josie Hughes

Scientists have developed a 3D-printed robotic hand which can play simple musical phrases on the piano by just moving its wrist. And while the robot is no virtuoso, it demonstrates just how challenging it is to replicate all the abilities of a human hand, and how much complex movement can still be achieved through design.

The robot hand, developed by researchers at the University of Cambridge, was made by 3D-printing soft and rigid materials together to replicate of all the bones and ligaments – but not the muscles or tendons – in a human hand...

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