Articles tagged with Applied Physics
Researchers have optimized a novel wall-less Hall thruster design, suitable for long-duration deep space missions. The new design enables scientists to observe hidden plasma regions, facilitating investigation of plasma instability and anomalous electron transport.
Researchers from Loughborough and Nottingham Universities developed a multi-SQUID device that can operate at 77 K, outperforming standard 4.2 K SQUID magnetometers. The new design uses flux focusers to achieve high temperature performance with low noise levels.
A team of researchers has developed a detailed analysis of the electrical characteristics of double-quantum-dot transistors, which could help design better devices for manipulating single electrons. The device's stability and geometry were found to be crucial in determining its electrical parameters.
Researchers create biphilic surface that repels water in some areas and attracts it in others, delaying frost formation even at 6 degrees below freezing. The unique condensation dynamics on the surface cause small droplets to merge and release energy, delaying freezing for over 3 hours.
Researchers have discovered an iron-gallium alloy called Galfenol that can generate significant amounts of power when subjected to strong impacts. The material converts mechanical energy into magnetic energy with high efficiency and can be used to create wireless impact detectors.
A new thermal cloak developed by researchers in Singapore can render objects thermally invisible by redirecting incident heat. The active thermal cloaking system has the potential to fine-tune temperature distribution and heat flow in electronic and semiconductor systems.
Scientists at Sichuan University develop an alloy combining diamond and cubic boron nitride, exhibiting superior hardness and wear resistance when cutting through steel and granite. The novel process enables mass production of the alloy, which could revolutionize various industrial materials processing.
Studying kangaroo cartilage reveals how shoulder and knee joints behave differently, leading to improved treatments and better implants. The researchers identified the collagen network as a key factor in absorbing forces without damaging.
Scientists applied over 50 volts across a weak hydrochloric acid drop, causing it to rise into the air above a glowing plasma layer. The effect is similar to Leidenfrost levitation but uses electricity instead of heat.
Researchers have designed a new device that can convert a DC electric field into a tunable source of terahertz radiation. The device exploits surface plasmon resonance in hybrid semiconductors to produce coherent terahertz emission, with potential applications in medical imaging and security.
Researchers developed a novel surface structure with gradient features to control droplet bouncing, enabling anti-icing capabilities for various applications. The new surface design prevents ice formation and reduces the contact time between droplets and surfaces.
Researchers developed a biodegradable silicon transistor using cellulose nanofibrillated fiber substrate, offering a sustainable alternative to traditional silicon-based transistors. The device exhibited superior performance and microwave-frequency operation capabilities comparable to existing semiconductor transistors.
A new ultrasonic fingerprint sensor measures 3D images of a finger's surface and tissue, making biometric solutions more robust and secure. The technology, developed by the University of California, Davis, has potential applications in medical diagnostics and personal health monitoring.
Researchers at UC San Diego have developed a new method to control electrical transport through high-temperature superconductors, enabling the creation of sophisticated electronic devices capable of measuring tiny magnetic fields in the brain or heart. This breakthrough paves the way for improved satellite communications and novel tech...
Researchers have developed a new method to create oxide Josephson junctions, which could lead to high-temperature superconducting electronics. The direct-write approach allows for mass production of high-quality junctions, reducing costs and enabling applications such as biomedical magnetic imaging.
Scientists have created tiny diamond-based probes that can measure temperature with high accuracy, from near-cryogenic cold to slightly above the melting point of aluminum. The probes use luminescent signals from green glowing diamond defects and can detect fast thermal variations.
A new approach has been proposed to communicate with spacecraft as they re-enter the atmosphere, utilizing a matched layer in the antenna to replicate special conditions that enhance signal transmission. This method could also be applied to other hypersonic vehicles, such as military planes and ballistic missiles.
Researchers created a cheap alternative to graphene aerogels for electromagnetic absorption, with properties similar to graphene aerogels. The new material has low loss and wide effective bandwidth, making it suitable for various applications.
Researchers developed coupled microcantilevers that can measure mass on the order of nanograms in a liquid environment with only a 1 percent margin of error. This enables weighing individual molecules, ideal for biological processes such as DNA hybridization and protein characterization.
Researchers at ETH Zurich developed a new multiplexing technique that accelerates nanoMRI imaging, enabling faster and more efficient scanning of nanoscale objects. The technique cuts normal scan time from two weeks to just two days.
Researchers from the University of Manchester have printed a radio frequency antenna using compressed graphene ink, demonstrating its potential for commercial use in low-cost applications. The antenna is flexible, environmentally friendly, and could be mass-produced at a lower cost than traditional metals.
North Carolina State University researchers develop tunable liquid metal antenna controlled by voltage, allowing for dynamic changes in operating frequency and radiation pattern. This innovation enables miniaturization and adaptation to correct near-field loading problems, making it highly desirable for mobile devices.
Researchers have designed and tested a magnetic shield that provides more than 10 times better shielding than previous state-of-the-art shields. The device enables high precision measurements of fundamental particles, potentially revealing previously hidden physics.
Artificial muscles made from gold-plated onion cells have been created by National Taiwan University researchers. The onions' cell structure allows them to bend and stretch in different directions depending on the applied voltage, enabling unique actuation modes.
Scientists at Walailak University and Hokkaido University report the first full 3D scan of a single biological cell, achieving micron resolution with picosecond ultrasonics. This technique allows for nondestructive imaging of living cells, opening new avenues for studying their physical properties.
A team of researchers has found a way to strip out metallic carbon nanotubes from arrays using a simple, scalable procedure, leaving behind semiconducting nanotubes suitable for electronic devices. This breakthrough could lead to the development of smaller, faster, and cheaper electronic devices.
Researchers at Durham University and the University of São Paulo discovered a correlation between single-walled carbon nanotube concentration and computational capability in composite materials. The emerging field of 'evolution-in-materio' uses natural evolution principles to train materials to mimic electronic circuits.
Geographic tongue (GT) is characterized by evolving red patches on the tongue surface due to loss of papillae. New research reveals GT can spread in circular or spiral patterns, with spiral patterns indicating a more acute condition that lingers for a long time.
Researchers discovered that microfibers in plant hairs change shape to collect and release water, a phenomenon that may inspire technology to mimic. This unique feature could help develop an apparatus capable of collecting water from the air in arid regions.
Researchers have discovered elastocaloric materials that can change temperature in response to mechanical stress, enabling more efficient solid-state refrigeration. These materials could lead to environmentally-friendly replacements for traditional cooling technologies, with potential applications in household refrigerators, air condit...
A team at Trinity College in Dublin has discovered a new class of magnetic materials based on Mn-Ga alloys, which could revolutionize data storage and increase wireless data transmission speeds. The material has unique properties that make it immune to external magnetic fields and free from demagnetizing forces.
Researchers have created a textured rubber material that provides better traction on ice, offering a potential solution for slip-resistant winter boots. The material, made of glass fibers embedded in a compliant rubber, was developed to reduce incidents of pedestrian slips and falls on icy surfaces.
A team of researchers from the University of Michigan and Western Michigan University has developed a new radiation-resistant spintronic material that can maintain its spin-dependence after being irradiated. This breakthrough could enable electronic devices to work in harsh environments, such as space-based communications satellites.
Researchers have developed a thin film that maintains electric and magnetic properties even when highly curved, paving the way for wearable devices. The new material improves upon existing materials by reducing leakage current and increasing flexibility.
Researchers discover molybdenum disulfide thin-film transistors functional at high temperatures, demonstrating potential for extreme-temperature electronics. The material's stable operation after two months suggests new applications in harsh environments.
Researchers have created a pump that moves fluid using vibration instead of a rotor, potentially capturing wasted mechanical energy and reducing noise in industrial situations. The design mimics the movement of birds' flapping wings, which manipulate airflow to move themselves.
A Brazilian team of researchers has developed a new levitation device that can hover tiny polystyrene particles with more control than any instrument before. The device uses sound waves to reflect off a concave reflector, allowing the particle to be moved around without precise setup.
Researchers developed a new way to calculate the electrical properties of individual components in composite materials, which could improve the energy efficiency of medical refrigerators, air-conditioned car seats, and other thermoelectric applications. The technique uses effective medium theory and allows for the separation of phase p...
Researchers found that regular poor trimming can cause residual stress in nails, leading to shape changes and serious conditions. They suggest optimising nail shapes to reduce stress and promote health in both humans and animals.
Researchers propose a new method for measuring magnetic properties of materials at atomic resolution, utilizing the phase symmetry of an electron beam. This technique enhances the magnetic signal, enabling the detection of magnetism with unprecedented precision.
Single-walled carbon nanotubes (SWCNTs) show promise as a successor to silicon for smaller, faster and cheaper electronic devices. A new method improves their reliability and performance by coating them with PVDF-TrFE, a fluoropolymer that mitigates impurities and defects.
Scientists at Boston University and Stanford University School of Medicine attach E. coli colonies to a microcantilever, allowing real-time monitoring of bacterial motion and communication patterns. The new system enables rapid assessment of antibiotic susceptibility and potential applications in cancer drug development.
Researchers discovered that geckos can turn their toe hairs' stickiness on and off, allowing for speed and energy-efficient climbing. This mechanism is crucial for geckos' survival and enables potential applications in synthetic dry-adhesives for extreme environments.
Scientists at Yale University have successfully changed the color of butterfly wings using evolutionary principles, producing the first structural color change in an animal. The research has implications for the design of new materials and devices, and may help physicists and engineers develop more efficient designs.
Scientists have created a way to plant imperfections called 'NV centers' at specific spots within a diamond lattice, advancing quantum computing and atomic-scale measurement. The technique successfully localized NV centers within a cavity approximately 180 nanometers across.
Researchers used the Constructal Law to analyze airplane designs and found they follow evolutionary trends towards larger size, greater range and efficiency. The study predicts future aerospace design with surprising accuracy.
A team of researchers developed a tiny prototype device that mimics the parasitic fly's freakishly acute hearing mechanism, which may be useful for new generation of hypersensitive hearing aids. The device uses piezoelectric materials to turn mechanical strain into electric signals, minimizing power consumption.
A France-US research team reports a new multi-bit MRAM storage paradigm that can store up to 4 bits per cell, rivaling flash memory in terms of storage density. The technology uses Crocus Technology's proprietary Magnetic Logic Unit (MLU) technology to remotely control a sensor to probe magnetic configurations.
Researchers are monitoring the physics of the ice edge in the Beaufort Sea to better understand and predict open water in Arctic seas. The international effort aims to study how processes drive sea ice melt will change with increasing open water.
A team of researchers at KAIST has developed a flexible, wearable sensor that can directly measure goose bumps on the skin, which is caused by sudden changes in body temperature or emotional states. The sensor uses a coplanar capacitor and detects piloerection through a simple linear relation between deformation and capacitance change.
Researchers have developed a novel approach to magnetic cooling, utilizing solid magnetic substances as refrigerants in miniaturized magnetic refrigerators. The technology is more efficient and 'green' than traditional fluid-compression refrigeration, with potential applications in domestic and industrial settings.
Researchers have successfully scaled up molecular self-assembly from nanometers to millimeters using noncovalent interactions, enabling the creation of large-area nanostructures. This breakthrough paves the way for alternative patterning techniques in nanoelectronics and materials science.
Scientists at the University of Twente have successfully folded flat sheets of silicon nitride into complex 3D structures using a custom software program and water. The technique has potential applications in delivering drugs to targeted areas of the body or performing autonomous microsurgery.
Researchers have developed sperm-inspired microrobots that can be controlled by oscillating weak magnetic fields, enabling applications such as targeted drug delivery and in vitro fertilization. The robots consist of a head coated in a thick cobalt-nickel layer and an uncoated tail, propelled forward by magnetic torque.
Researchers created a new ultracapacitor by combining graphene flakes with single-walled carbon nanotubes, resulting in three times higher specific capacitance. The hybrid structure's low costs and small size make it suitable for portable electronics and hybrid electric vehicles.
A new study reveals a sensitive detection method that can identify small quantities of plutonium or highly enriched uranium in luggage, posing a significant threat to nuclear security. The approach combines commercially available spectral X-ray detectors with a specialized algorithm, enhancing the detection powers of X-ray imaging.
Brookhaven physicist Alexei Klimentov receives a $3.4 million mega-grant to develop new 'big data' computing tools, building on the success of his ATLAS experiment workload and data management system. The project aims to efficiently handle large-scale data distribution and processing for various scientific fields.
Researchers found a new application of physics tools in understanding epigenetic memory, which is how organisms create a biological memory of certain conditions. The study highlights the interdisciplinary nature of modern molecular biology and shows how mathematical models can help clarify complex biological problems.
Researchers used high-speed photography to study how ultrasound-stimulated microbubbles dissolve killer blood clots. The team found that the bubbles deform the clots' boundaries before burrowing into them, creating fluid-filled tunnels that break up the clots from the inside out.
Researchers found that even DOD-approved soundproof rooms can be compromised by poor design and sealing issues. To improve security, acoustic door seals and mandatory entry vestibules are proposed as remedies.