Scientists developed a more general approach for controlling acoustic scattering on complex, odd-shaped objects using a coating of two thin fluid layers. The coating significantly reduces the scattering strength, allowing for ideal acoustic measurements in laboratories.
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 analyzed four Canadian cities using RETScreen software and found that geothermal heat pumps are most viable in Halifax. The study suggests that the systems could provide significant financial savings, breaking even within 7 years.
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.
Researchers discovered that umbrella-shaped diamond nanostructures with metal mirrors can collect photons three to five times more efficiently than bulk diamond. This breakthrough could lead to applications in magnetic sensors and quantum computing.
Researchers from UC Santa Barbara develop a simple new electron-beam multilayer deposition technique to create high-quality ITO intracavity contacts, yielding significant improvements in optoelectronic properties. The technique paves the way for others to enter this realm of research and provides a critical part of gallium nitride-base...
Researchers create Bose-Einstein condensate in a biological protein using terahertz radiation, demonstrating Fröhlich condensation. This phenomenon could lead to new medical applications and ways to control chemical reactions in industry.
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 from California Institute of Technology found that heat can shorten dendrites by up to 36% and possibly extend battery lifetimes. By analyzing the effect of temperature on individual lithium atoms, they discovered that increased temperatures trigger atomic motion, leading to the breakdown of dendrite structures.
A team of researchers from Harvard University explored evaporative patterning transitions and discovered a simple mechanism behind drying-induced residue formations. By controlling the dynamics of evaporation, they can obtain specific types of residues while avoiding others.
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.
Researchers have obtained the first nanometer-resolved image of individual tobacco mosaic virions using low-energy electron holography, a non-destructive single-particle imaging technique. This breakthrough could lead to improved drug design by providing detailed knowledge of biomolecular structures.
Scientists developed a new type of thin film transistor made from zinc oxynitride, achieving electron mobility speeds about ten times greater than predecessors. The argon plasma process improved the material's stability and reduced nitrogen loss.
Researchers have discovered that vertically aligned carbon nanotubes (VACNTs) can be used to capture and store greenhouse gases like carbon dioxide and sulfur dioxide more effectively than traditional adsorption materials. The study found that adjusting the morphological parameters of VACNTs can significantly impact gas adsorption.
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.
Researchers from Italy have devised a novel method to convert low-frequency signals into higher frequencies using Nobel Prize-winning Josephson junctions. The approach produces voltage pulses containing hundreds of harmonics, enabling the creation of smaller and more efficient signal generators.
Researchers have developed a simple mechanism to control the swimming direction of magnetotactic bacteria, which can provide insight into the earth's sedimentary layers and potentially be used as indicators of climate change. The new tool uses a rotating permanent magnet to generate a controlled magnetic field.
Plant cellulose can self-assemble into wrinkled surfaces that produce striking optical effects, such as iridescence and color changes. The researchers found that the twisting structure of cellulose creates a pattern of parallel ridges that split light into its colored components, producing an iridescent sheen.
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.
A team of researchers developed a system to study how materials respond to mechanical stress, enabling nondestructive characterization of structural materials. The tool could lead to aerospace components that are lighter and more tolerant to damage.
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.
A Lab-on-a-Disc platform developed by German and Irish researchers detects bacterial species causing urinary tract infections in 70 minutes, significantly reducing wait times compared to traditional methods.
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.
The study provides a high-resolution readout of the energy levels for cations from their vibrational ground state to excited states, furthering our understanding of the coupled vibrations in the Renner-Teller effect. The results also shed light on the electronic structure of organic molecules.
A new model suggests that template-assisted ligation could have enabled the leap from monomers to self-replicating polymer chains in primordial soup. The model proposes a cycle between 'day' and 'night' phases, driven by environmental changes, where polymers join together to form longer chains via template-assisted ligation.
The NASA-led group has developed a wide-field-of-view imager capable of detecting soft X-ray emissions produced when the solar wind encounters neutral gas, including Earth, Mars, and comets. The imager uses Lobster-Eye optics to focus soft X-rays onto a plane located at half the radius of the sphere.
Researchers have developed a hybrid photocatalyst using titanium dioxide nanoparticles, silver, and reduced graphene oxide that can break down BPA under visible light. This new material has significantly improved photocatalytic activity compared to traditional TiO2 nanoparticles.
Researchers from Korea University have developed an easy and microelectronics-compatible method to grow graphene, allowing for the synthesis of high-quality, multi-layer graphene on silicon substrates. The technique involves ion implantation and activation annealing, enabling controllable and scalable production of large-area graphene.
Chinese scientists created a tunable membrane material that effectively recreates the quantum tunneling effect for sound waves. The material has an effective density near zero and enables high transmission around sharp corners and efficient wave splitting.
Researchers from Italy, Japan and Germany correlated two precise measurements of Avogadro's number to obtain a single value that can be used to redefine the kilogram. The new estimate will help expand international access to precise measurements and pave the way for a more accurate and globally accessible definition.
The determination of fundamental constants is becoming increasingly accurate, according to a review paper published this week. This will aid in the redefinition of standard scientific units, including the kilogram and the Kelvin, by 2018.
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 report from the American Institute of Physics finds that Ph.D. physicists in non-academic careers are intellectually stimulating, challenging, and rewarding. Many earn salaries higher than their academic counterparts, with 85% working in STEM fields and 71% describing their jobs as intellectually challenging.
Scientists are using subatomic particles called muons to analyze the thickness of concrete slabs and metal pipes. The technique can safely identify faulty infrastructure components without creating radiation or invasive inspections.
Researchers discover smaller nanoparticles of magnesium hydride have better mechanical properties, including plastic stability and homogeneous dislocation activity. This suggests a path forward for making better hydrogen storage tanks by engineering them to take advantage of these properties.
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 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.
A branching tree-like structure can increase the melting rate of materials for better energy storage. The study's findings could help improve phase change systems, essential for renewable energy sources like wind and sun.
IBM researchers have successfully fabricated futuristic components on silicon chips using a new technique. The breakthrough allows for the integration of III-V materials onto silicon wafers, which may enable further miniaturization and cost reduction in computer chips.
Researchers discovered that nanobubbles persist in liquid, influencing the formation and dissociation of natural gas hydrates. The findings provide insight into the mechanism of hydrate decomposition and could lead to more efficient and safe extraction of methane hydrates.
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.