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Ultrasound

Medical

Ultrasound cuts healing time of chronic wounds by 30 percent

Further to the mental anguish, a lot of time in a hospital bed can bring about some agonizing physical discomfort. This is most commonly brought about by skin ulcers and bedsores, which threaten to evolve into dangerous and potentially deadly infections if left untreated. But a British research team has happened upon a technique that promises to cut the healing time of these and other chronic wounds by around a third, using simple low-intensity ultrasounds.Read More

Science

3-D ultrasonic fingerprint scanning could strengthen smartphone security

Researchers at the University of California, Davis and Berkeley have managed to miniaturize low-depth ultrasound technology to create a fingerprint sensor that can scan your finger in 3D. This low-power technology, which could improve on the robustness of current-generation capacitive scanners, could soon find its way to our smartphones and tablets.Read More

Medical

Non-invasive Alzheimer's treatment restores memory using ultrasound

Alzheimer's disease is a chronic neurodegenerative disease that most often begins in people over 65 years of age. Usually it starts slowly and continues to worsen over time until the sufferer succumbs to an increasing loss of memory, bodily functions and, eventually, death. Research has shown that there is an association with Alzheimer's and the accumulation of plaques that affect the neuronal connections in the brain. Now researchers at the University of Queensland have discovered a new way to remove these toxic plaques using a non-invasive form of ultrasound therapy.Read More

Medical

Ultrasound technique shown to reverse Alzheimer’s symptoms in mice

Magnetic resonance (MR) imaging-guided ultrasound, a technology that involves highly-targeted ultrasound beams and monitoring their effects through imaging, has shown to help treat symptoms of Alzheimer’s disease in mice. The treatment was found to improve brain performance in the animals and has the researchers hopeful that the technique may prove effective in improving cognitive behavior in humans. Read More

Physics

New acoustic levitation device goes out of alignment to expand potential applications

Acoustic levitators are already pretty intriguing devices, in that they use opposing sound waves to suspend small objects in mid-air. Now, however, scientists from Brazil's University of São Paulo have created what they claim is a better acoustic levitator. It's less fussy about the exact orientation of its components, making it more feasible for use in practical applications. Read More

Science

New ultrasound research creates holographic objects that can be seen and felt

Haptic feedback has become a common feature of recent technology, but such systems usually rely on stimulation of parts of the user’s body via direct mechanical or acoustic vibration. A new technique being developed by researchers at the University of Bristol promises to change all of this by using projected ultrasound to directly create floating, 3D shapes that can be seen and felt in mid-air.Read More
Robotics

Water pipe-inspection robot designed to have a light touch

When it comes to robots that perform internal inspections of water pipes, virtually all of them move along on rubber tires or treads. As that rubber grips against the inside of the pipe, however, it dislodges rust particles that ultimately end up coming out of peoples' taps. In an effort to address that problem, the European Union TRACT project is developing a propeller-driven inspection robot that keeps the pipe-touching to a minimum.Read More

Science

Metamaterials allow ultrasound to penetrate bone and metal

Score another point for metamaterials. Researchers at North Carolina State University have designed complementary metamaterials that will aid medical professionals and engineers in diagnosing problems under the skin. These metamaterials are structured to account for so-called "aberrating layers" that block or distort the acoustic waves used in ultrasounds, making it possible to now conduct ultrasounds of a person's head or an airplane's wing – among other things.Read More

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