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Categories: Ecology: Trees, Physics: Acoustics and Ultrasound
Published Researchers develop a paper-thin loudspeaker
(via sciencedaily.com) Researchers created an ultrathin loudspeaker that can turn any rigid surface into a high-quality, active audio source. The fabrication process can enable the thin-film devices to be produced at scale.
Published The physics of a singing saw
(via sciencedaily.com) Researchers have used the singing saw to demonstrate how the geometry of a curved sheet, like curved metal, could be tuned to create high-quality, long-lasting oscillations for applications in sensing, nanoelectronics, photonics and more.
Published Tumors partially destroyed with sound don't come back
(via sciencedaily.com) Noninvasive sound technology breaks down liver tumors in rats, kills cancer cells and spurs the immune system to prevent further spread -- an advance that could lead to improved cancer outcomes in humans.
Published Ultrasound gave us our first baby pictures can it also help the blind see?
(via sciencedaily.com) While there are no successful non-invasive therapeutics currently available for the treatment of vision loss, researchers at have come up with a new idea to address this growing problem. Currently, ophthalmologists use electronic technology to directly stimulate retinal neurons by implanting electrode devices inside the eye, a technique that requires expensive and invasive surgery. A research team is now exploring a non-surgical solution that could restore sight by using another of the five senses: Sound.
Published 'Ears' for rover Perseverance's exploration of Mars
(via sciencedaily.com) Scientists have built instruments to give humans eyes and a nose on Mars -- and now they are helping add ears as well.
Published Dual-mode endoscope offers unprecedented insights into uterine health
(via sciencedaily.com) A new endoscope design that combines ultrasound with optical coherence tomography can assess the structural features of the endometrium with unprecedented detail. This dual-mode endoscope could help doctors diagnose infertility problems that are related to endometrial receptivity with greater accuracy than current imaging technologies.
Published The Rule of Two helps make spaces sound better
(via sciencedaily.com) Researchers developed a new acoustic measurement technique in a room with more acoustic combinations than there are ants on Earth.
Published Warming oceans are getting louder
(via sciencedaily.com) Climate change is speeding sound transmission in the oceans and the way it varies over the globe with physical properties of the oceans. Two 'acoustic hotspots' of future sound speed increases are predicted east of Greenland and in the Northwest Atlantic Ocean, East of Newfoundland. In these locations, the average speed of sound is likely to increase by more than 1.5% if 'business-as-usual' high rates of greenhouse gas emissions continue through 2100.
Published Concert hall acoustics for non-invasive ultrasound brain treatments
(via sciencedaily.com) Engineers have developed a device that is a first step to enabling noninvasive, ultrasound-based therapies for the brain. For example, ultrasound waves are currently being used in clinical trials to treat epilepsy.
Published Quantum dots shine bright to help scientists see inflammatory cells in fat
(via sciencedaily.com) To accurately diagnose and treat diseases, doctors and researchers need to see inside bodies. Medical imaging tools have come a long way since the humble x-ray, but most existing tools remain too coarse to quantify numbers or specific types of cells inside deep tissues of the body. Quantum dots can do that, according to new research in mice.
Published New acoustic fabric converts audible sounds into electrical signals
(via sciencedaily.com) Researchers have developed a new acoustic fabric converts audible sounds into electrical signals. They designed a fabric that works like a microphone, converting sound first into mechanical vibrations, then into electrical signals, similarly to how our ears hear.
Published Gravitational wave mirror experiments can evolve into quantum entities
(via sciencedaily.com) Scientists review research on gravitational wave detectors as a historical example of quantum technologies and examine the fundamental research on the connection between quantum physics and gravity. The team examined recent gravitational wave experiments, showing it is possible to shield large objects from strong influences from the thermal and seismic environment to allow them to evolve as one quantum object. This decoupling from the environment enables measurement sensitivities that would otherwise be impossible.
Published Acoustic propulsion of nanomachines depends on their orientation
(via sciencedaily.com) Scientists have now found answers to central questions which had previously stood in the way of acoustic propulsion of nanoparticles.
Published Physicists show how frequencies can easily be multiplied without special circuitry
(via sciencedaily.com) A new discovery by physicists could make certain components in computers and smartphones obsolete. The team has succeeded in directly converting frequencies to higher ranges in a common magnetic material without the need for additional components. Frequency multiplication is a fundamental process in modern electronics.
Published Ultrasound scan can diagnose prostate cancer
(via sciencedaily.com) An ultrasound scan can be used to detect cases of prostate cancer, according to new research.
Published Ultrasounds for endangered abalone mollusks
(via sciencedaily.com) The world's abalone are threatened, endangered or otherwise vulnerable in nearly every corner of the planet. If only we could wave a magic wand to know when abalone are ready to reproduce, without even touching them. Scientists have now found that wand -- although it isn't magic, and it only looks like a wand. It's an ultrasound transducer, and it can be used to quickly and noninvasively detect when abalone are ready to spawn, they report in a study this week.
Published Transparent ultrasound chip improves cell stimulation and imaging
(via sciencedaily.com) Ultrasound scans -- best known for monitoring pregnancies or imaging organs -- can also be used to stimulate cells and direct cell function. A team of researchers has developed an easier, more effective way to harness the technology for biomedical applications.
Published Low-cost, 3D printed device may broaden focused ultrasound use
(via sciencedaily.com) Medical researchers have developed a method for producing a low-cost, easy-to-use focused ultrasound device that can help open up the blood-brain barrier for non-invasive procedures and diagnostics.
Published Musicians, chemists use sound to better understand science
(via sciencedaily.com) A team of researchers from music, chemistry and computer science is using sound to better understand biochemical processes such as the physical mechanisms of protein folding.
Published Speed of sound used to measure elasticity of materials
(via sciencedaily.com) Researchers have devised a revolutionary new technique for measuring the microscopic elasticity of materials. Known as SRAS, the technology works by measuring the speed of sound across the material's surface.