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.....»»
Researchers realize water-air acoustic communication based on broadband impedance matching
With increasing demand for exploration and utilization of marine resources, achieving direct and efficient communication between water and air has been an urgent need. Sound waves, as the only propagation way with low attenuation in both water and ai.....»»
Arctic Ocean soundscapes reveal changes in mammal populations in response to climate change
While the sounds of our oceans may be familiar to us through the lens of nature documentaries, from the haunting calls of whales to the barks of some fish, this acoustic environment can provide a wealth of knowledge to scientists regarding the comple.....»»
Scientists demonstrate the existence of a universal lower bound on topological entanglement entropy
In a new study, scientists from the US and Taiwan have theoretically demonstrated the existence of a universal lower bound on topological entanglement entropy, which is always non-negative. The findings are published in the journal Physical Review Le.....»»
Room-temperature continuous-wave topological Dirac-vortex microcavity lasers on silicon
With the explosive growth of data traffic, it is highly desired to develop hybrid photonic integrated circuits combining various optical components on a single chip......»»
A strategy for the spin-acoustic control of silicon vacancies in a 4H silicon carbide-based bulk acoustic resonator
Bulk acoustic resonators—stacked material structures inside which acoustic waves resonate—can be used to amplify sounds or filter out undesired noise. These resonators have found wide use in today's RF telecommunication, like Front-End Modules (F.....»»
Measuring the changing soundscape in Glacier National Park
From the eerie echo of a bugling elk to the gentle swoosh of water lapping against a stony shore, a unique combination of sounds helps distinguish each national park. This acoustic environment, as perceived by humans, is known as a soundscape, and it.....»»
High-speed electro-optic modulation in topological interface states of a one-dimensional lattice
Electro-optic modulators, which convert signals from the electrical to the optical domain, are at the heart of optical communications, terahertz wireless communications, microwave signal processing, and quantum technology. Next-generation electro-opt.....»»
Topological materials open a new pathway for exploring spin hall materials
A group of researchers have made a significant breakthrough which could revolutionize next-generation electronics by enabling non-volatility, large-scale integration, low power consumption, high speed, and high reliability in spintronic devices......»»
Researchers advance topological superconductors for quantum computing
Quantum computers process information using quantum bits, or qubits, based on fragile, short-lived quantum mechanical states. To make qubits robust and tailor them for applications, researchers from the Department of Energy's Oak Ridge National Labor.....»»
Generating biskyrmions in a rare earth magnet
Magnetic skyrmions have received much attention as promising, topologically protected quasiparticles with applications in spintronics. Skyrmions are small, swirling topological magnetic excitations with particle-like properties. Nevertheless, the low.....»»
Study reports observation of nonlinear disclination states
Higher-order topological insulators are unusual materials that can support topologically protected states. Recently discovered disclination states also belong to the class of higher-order topological states but are bound to the boundary of the discli.....»»
Researchers use "topological gardening" to achieve unexpected spin transport
"Trimming" the edge-states of a topological insulator yields a new class of material featuring unconventional "two-way" edge transport, as reported in a new theoretical study from Monash University, Australia, published in Materials Today Physics......»»
New study reveals temperature-coupled song preferences in an eavesdropping parasitoid fly
Ambient temperature can affect acoustic communication signals produced by ectothermic signalers. For example, the temporal features of acoustic signals can occur at a higher rate at higher temperatures. If species recognition is based on evaluating t.....»»
Mathematics formula K-theory used to advance understanding of topological materials
Terry Loring, distinguished professor of mathematics and statistics, published and co-authored a new research piece involving his research on K-theory with the major advances in applications to critical problems in physics......»»
In some materials, immutable topological states can be entangled with other manipulable quantum states
Rice University physicists have shown that immutable topological states, which are highly sought for quantum computing, can be entangled with other manipulable quantum states in some materials......»»
Millimeter-scale meron lattices that can serve as spin injectors for LEDs
Merons, topological structures based on in-plane magnetized magnetic materials, could have numerous valuable applications, particularly for carrying information or storing magnetic charge. Most past realizations of these structures, however, were lim.....»»
Acoustic emission monitoring technique, an essential way to analyze pulsed laser processing
Acoustic emission (AE) monitoring is used to reveal the interaction mechanisms in pulsed laser processing of float glass. Circular ablated pits and irregular shaped cracks are formed on the float glass's upper surface by the pulsed laser dotting. By.....»»
Fiber optic sensing tracks seismicity from injected carbon dioxide at Australian site
Researchers at a field site in Victoria, Australia are among the first to use fiber optic distributed acoustic sensing (DAS) for high-precision tracking of induced seismicity from a small carbon dioxide (CO2) injection, according to a new study publi.....»»
3D/4D printed bio-piezoelectric scaffolds show potential in bone tissue engineering
Piezoelectricity has been well recognized as the key factor in bone regeneration. However, the current additive-manufactured scaffolds mainly focus on the reconstruction of bionic topological structure and mechanical microenvironment, while the cruci.....»»
Visualizing the topology of electrons with "3D glasses"
They are seen as a beacon of hope for energy-saving electronics and the high-tech of the future: topological quantum materials. One of their properties is the conduction of spin-polarized electrons on their surface—even though they are actually non.....»»