Researchers at Binghamton University, State University of New York researchers have found a way to improve the performance of tiny sensors that could have wide-reaching implications for electronic devices we use every day.
A research renaissance into chip-based control of light-sound interactions could transform our 5G networks, satellite communications and defense industries. These interactions, known as Brillouin scattering, are set to underpin new designs in microchips and push our theoretical understanding of fundamental science, write Professor Ben Eggleton and colleagues in Nature Photonics.
Atomically thin materials developed by Stanford researchers could create heat-shields for cell phones or laptops that would protect people and temperature-sensitive components and make future electronic gadgets even more compact.
Bats can find motionless insects on leaves in the dark. This was thought to be impossible, because the acoustic camouflage provided by the leaves should confuse their echolocation system. Inga Geipel and colleagues discovered how bats overcome this problem.
A device that eavesdrops on the quantum whispers of atoms could form the basis of a new type of quantum computer.
A new study of the impact on marine life of seismic air guns, used in geological surveys of the seafloor, has found that the sensory organs and righting reflexes of rock lobster can be damaged by exposure to air gun signals.
Ping! The popular 1990 film, The Hunt for Red October, helped introduce sonar technology on submarines to pop culture. Now, nearly 30 years later, a team of scientists at the University of Missouri is using this same sonar technology as inspiration to develop a rapid, inexpensive way to determine whether the drinking water is safe to consume. Based on their results, the scientists said they can determine changes in the physical properties of liquids.
Under certain circumstances, a wave can split into several paths, reaching some places with high intensity, while avoiding others almost completely. This kind of 'branched flow' has first been observed in 2001. Scientists at TU Wien (Vienna) have now developed a method to exploit this effect. The core idea of this new approach is to send a wave signal exclusively along one single pre-selected branch, such that the wave is hardly noticeable anywhere else.
Video cameras continue to gain widespread use, but there are privacy and environmental limitations in how well they work. Acoustical waves are an alternative medium that may bypass those limitations. Unlike electromagnetic waves, acoustical waves can be used to find objects and also identify them. As described in a new paper in Applied Physics Letters, the researchers used a 2D acoustic array and convolutional neural networks to detect and analyze the sounds of human activity.
Researchers have used sound waves to precisely manipulate atoms and molecules, accelerating the sustainable production of breakthrough smart materials. Metal-organic frameworks (MOFs) are versatile and porous nanomaterials that can be used to store, separate, release or protect almost anything, but the traditional process for creating them is environmentally unsustainable and time-consuming. Scientists have now demonstrated a clean, green technique that can produce a customized MOF in minutes, by harnessing the power of sound.