The first topological acoustic transistor
Topological materials move electrons along their surface and edges without any loss, making them promising materials for dissipationless, high-efficiency electronics. Researchers are especially interested in using these materials as transistors, the.....»»
Topological near fields generated by topological structures
Metamaterials and metaoptics offer a broad dimension to explore exotic functionalities in physics and optics. In a new report now published in Science Advances, Jie Peng and a team of scientists in physics and interdisciplinary studies at the City Un.....»»
A faster way to find and study topological materials
Topological materials, an exotic class of materials whose surfaces exhibit different electrical or functional properties than their interiors, have been a hot area of research since their experimental realization in 2007—a finding that sparked furt.....»»
Reducing noise pollution with acoustic walls and rubberised roads
Sound-diffracting walls and rubberised asphalt ingredients tackle the major environmental concern of noise pollution from traffic......»»
New fishing management tools for the Pyrenean marine coastline
The Pyrenean marine coastline has a high biological connectivity between fish populations that move around different habitats at a regional scale, according to the RESMED project (2019–2021), an initiative based on acoustic telemetry techniques for.....»»
Topological materials become switchable
A donut is not a breakfast roll. Those are two very clearly distinguishable objects: One has a hole, the other does not. In mathematics, the two shapes are said to be topologically different—you cannot transform one into the other by small, continu.....»»
RF BAW filter maker Akoustis builds Asia-Pacific foothold in Taiwan
Akoustis Technologies, a US-based IDM of bulk acoustic wave (BAW) high-band filters for mobile and other wireless applications, has located its Asia-Pacific foothold in Taoyuan, northern Taiwan, looking to better serve Taiwanese ODMs and explore more.....»»
Spiral dislocation gives 3D topological photonics a robust edge
Crystals have enthralled humans for thousands of years with their visual beauty and elegant symmetrical shapes, and, more recently, with their numerous technological applications. Fundamentally, these materials are based on a highly regular arrangeme.....»»
These Bats Buzz like Bees to Save Their Own Lives
New research has discovered the first case of acoustic mimicry between a mammal and an insect—an acquired skill that could just save certain bats’ skin......»»
Physicists demo method for designing topological metals
U.S. and European physicists have demonstrated a new method for predicting whether metallic compounds are likely to host topological states that arise from strong electron interactions......»»
Humpback whale songs spread from pod to pod across the Pacific Ocean
A team of researchers with members from the University of St Andrews, Universidad San Francisco de Quito and the CETACEA Ecuador Project's Acoustic Ecology Program has found that songs created by humpback whales in some parts of the Pacific Ocean are.....»»
New insights into the interaction of topological insulators
Tungsten di-telluride (WTe2) has recently proven to be a promising material for the realization of topological states. These are regarded as the key to novel "spintronic" devices and quantum computers of the future due to their unique electronic prop.....»»
Researchers find novel topology-correlation interplay in toy model system built from iridate superlattice
In topological physics, band topology often originates from spin-orbit interaction, which gives rise to complex hopping parameters. While this approach has enjoyed great success in non-interacting or weakly interacting electronic materials, the conse.....»»
Saturn V was loud but didn"t melt concrete
The Saturn V carried man to the moon and remains the most powerful rocket to successfully launch to orbit. It captures the imagination—but sometimes, it might capture a bit too much imagination. Abundant internet claims about the acoustic power of.....»»
Asian elephants have a nasal pronunciation
With the help of an acoustic camera that visualizes sound pressure, researchers from the University of Vienna investigated the calls of Asian elephants. The elephants emitted their low frequency "rumbles" mainly through their trunk or through their m.....»»
Daily deals August 23: $299 iPad, $336 off 49-inch Samsung Curved 120Hz Monitor, $700 off EVGA GeForce RTX 3090 Ti, more
Tuesday's best deals include an Anker 737 Power Bank for $120, a Segway Go Kart Pro for $300 off, a Fender Concert Acoustic Guitar for $139, and much more.Best deals for August 23Every day, AppleInsider searches online retailers to find offers and di.....»»
Newly discovered magnetic interactions could lead to novel ways to manipulate electron flow
Newly discovered magnetic interactions in the Kagome layered topological magnet TbMn6Sn6 could be the key to customizing how electrons flow through these materials. Scientists from the U.S. Department of Energy's Ames National Laboratory and Oak Ridg.....»»
Topographic complexity is the most significant factor influencing bird acoustic indices in tropical forests
Ecoacoustics is an interdisciplinary science investigating soundscapes and their association with the environment over various temporal and spatial scales. Despite the data processing challenges (e.g., automated species identification), soundscape mo.....»»
NASA data, acoustic soundscapes assess health of Amazon rainforest
From space, parts of the Amazon rainforest that have previously been logged or burned may look fully recovered with a healthy, lush, and green canopy. They may seem to be places buzzing with activity and full of sounds. But inside the rainforest the.....»»
Auto supplier Gissing North America files for bankruptcy
Gissing is a subsidiary of a Chinese automotive supplier, and manufactures interior acoustic and cargo management systems......»»
How ancient soldiers used sound to frighten and confuse their enemies
As if the tumultuous din of battle is not horrendous enough, over the ages humans have discovered plenty of ways to exploit sound in warfare. I found an astonishing variety of ancient acoustic weapons while researching my book "Greek Fire, Poison Arr.....»»