Articles tagged with Semiconductors
Researchers at North Carolina State University discovered that altering the surface characteristics of a semiconductor material can significantly impact how neural cells grow. The study used gallium nitride and PC12 cells to mimic neural behavior, finding varying degrees of cell adhesion and growth on different textured surfaces.
University of Washington researchers develop two-dimensional, flexible semiconductors to build the thinnest-known LED, only three atoms thick yet mechanically strong. The LED can be used in a wide range of applications, including lighting and optical communication, offering high energy efficiency and miniaturization possibilities.
Researchers at the University of Cincinnati have developed a new method of light-matter interaction analysis, which appears to be a good way of helping make better semiconductor nanowires. The technique uses Rayleigh scattering to probe band structures and electron-hole dynamics in single indium phosphide nanowires.
A team of researchers from the University at Buffalo and two Chinese universities has developed an optical nanocavity that boosts the amount of light ultrathin semiconductors absorb. The advancement could lead to more powerful photovoltaic cells, faster video cameras, and potentially aid in developing hydrogen fuel.
Researchers at NC State University developed a 'superabsorbing' design that improves light absorption efficiency of thin film solar cells by decreasing semiconductor material thickness. The design, which looks like an onion, can absorb up to 90% of available solar energy using just a 10nm thick layer of amorphous silicon.
Researchers at JILA discovered a new quasiparticle, called a 'quantum droplet', which has both quantum and liquid-like characteristics. The droplets are stable enough for future studies on interactions between light and highly correlated states of matter.
Researchers at University of Wisconsin-Madison developed new, oxide-based materials to split water into hydrogen and oxygen gases using solar energy. The dual-layer catalyst design enabled a record high efficiency of 1.7%, making it possible to produce fuel at a price competitive with gasoline.
Researchers discovered a novel solid-state reaction that lets kesterite grains grow within seconds and at low temperatures. This process can produce near-micrometer-sized crystal grains suitable for thin film solar cells.
Researchers used a dual-electrode photoelectrochemistry method to study the flow of electrons at semiconductor-electrocatalyst junctions. They found that thin layers of ion-porous electrocatalyst material work best, reducing energy loss associated with the catalyst-semiconductor interface.
Researchers have discovered a novel liquid that can dissolve nine types of key semiconductors at room temperature and normal air pressure. The finding holds promise for improving electronic applications such as solar cells by creating low-cost, semiconducting thin films.
Physicists at the University of Basel have developed a quantum-classical hybrid system to stabilize the wavelength of photons emitted by a semiconductor, removing charge noise and enabling a stable single-photon source. This breakthrough could lead to improvements in semiconductor-based spin qubits and quantum communication.
Ben Mazin's superconducting detector array measures individual photon energy, allowing for higher per-pixel performance and improved time resolution. The ARray Camera for Optical to Near-infrared Spectrophotometry (ARCONS) instrument enables megapixel arrays within a decade.
Researchers at the University of Illinois developed nano-antennas that can detect molecules resonating in the infrared spectrum. The antennas concentrate long-wavelength light into ultra-subwavelength volumes, enhancing detection of small materials with standard IR spectrometers.
Researchers at Stanford University have created a theoretical framework to understand and predict the conductive properties of polymeric semiconductors. Their model reveals that the entangled structure of polymers, which allows them to bend, also impedes their ability to conduct electricity.
Researchers at Washington University in St. Louis have created a new class of materials that change their electronic properties when exposed to light. The composite material combines gold nanorods and zinc oxide, leading to improved performance in solar cells and potential applications for sensitive sensors.
Researchers at the Joint Center for Artificial Photosynthesis have developed a method to interface molecular hydrogen-producing catalysts with a semiconductor that absorbs visible light. This breakthrough enables the production of hydrogen fuel from sunlight without external electrical potential.
Researchers have discovered a quantum unit of photon absorption, dubbed 'AQ', that is general to all 2D semiconductors. This discovery could lead to exotic new optoelectronic and photonic technologies.
Researchers have created a more systematic approach to synthesizing quantum dots, enabling the purification of semiconductor nanocrystals with uniform surface properties. The new method uses gel-permeation chromatography and has been shown to produce quantum dots with improved stability and reactivity.
Researchers developed a single-pixel imaging technique using coded apertures to quickly manipulate THz waves, producing high-fidelity images in seconds. The technique has the potential to revolutionize areas like chemical fingerprinting, security imaging, and real-time skin cancer detection.
Researchers at UNIST demonstrated a novel method for epitaxially synthesizing uniform and homogeneous III-V semiconductor nanowires on Si wafers. The high quality of the nanowires was achieved without using metal catalysts, opening up new possibilities for opto-electronic devices.
A joint NSF/SRC program supports 29 researchers at 18 US universities to develop self-corrective electronic systems. The funding aims to ensure system reliability in life-critical applications, such as pacemakers and autonomous vehicles.
Researchers used a microwave oven to produce a nanocrystal semiconductor for more efficient photovoltaic solar cells and LED lights, biological sensors, and systems to convert waste heat to electricity. The method produces the material quickly and uses less toxic metals than other semiconductors.
A team at NIST has developed a simple and cost-effective way to separate metallic from semiconducting carbon nanotubes, paving the way for high-purity samples in electronics applications. The method uses liquid extraction with subtle differences in polymer hydrophobicity, yielding high-resolution results.
Researchers at University of Cincinnati have made a groundbreaking discovery in semiconductor nanowires, opening doors to better ways of harnessing solar energy and improving air quality sensors. The new structure has unique properties that could lead to advances in photovoltaic cells and stronger security measures.
Researchers at the University of Illinois have developed a new technique to measure nanometer-scale infrared absorption in semiconductor plasmonic microparticles. This allows for direct observation of plasmonic behavior within microparticle infrared antennas, enabling confirmation of theoretical models and design parameters.
Clint Frye, a Kansas State University doctoral student in chemical engineering, has been named the university's first Lawrence scholar. As a scholar, he will spend four years conducting collaborative research at the Lawrence Livermore National Laboratory and performing related research on semiconductors at K-State.
Researchers at Polytechnique Montréal and international partners create a new method for self-doping nanowires, allowing for precise control of electronic properties. This breakthrough enables the development of novel nanoscale devices with tailored shape and composition.
Researchers at UCSB create novel way to convert sunlight into energy using gold nanorods and platinum nanoparticles, avoiding common semiconductor material limitations. This new process shows promise for efficient and cost-effective solar power generation.
Researchers at TUM developed a cost-effective process to improve CMOS sensor performance using ultra-thin organic films. Spray-coating was found to be the most effective method, resulting in up to three times more sensitivity to light than conventional sensors.
Researchers from Lund University have made a significant breakthrough in solar cell technology, demonstrating the potential for nanowires to produce 13.8% efficient energy. The nanowire solar cells can absorb sunlight more efficiently than traditional silicon cells, offering higher efficiency at a lower cost.
Researchers developed a new optical technique to monitor and control nanoscale topography during semiconductor etching. This allows for precise control over the dimensions of devices, improving performance, speed, error rate, and time to failure.
Researchers at Oregon State University are developing a photosynthetic biorefinery to produce affordable products from diatoms. They aim to create a facility that can simultaneously produce semiconductors, biomedical products and biofuels using cheap materials like silicon and nitrates.
Researchers at the University of Toronto have successfully induced high-temperature superconductivity in a semiconductor by placing it in proximity to a topological insulator using Scotch poster tape. This breakthrough could lead to advancements in quantum computing and improvements in energy efficiency.
Researchers at NTNU have patented a method to grow semiconductor nanowires on graphene, offering excellent optoelectronic properties. This technology has the potential to enable new types of device systems, including solar cells and self-powered nanomachines, with large market potential.
Researchers at MIT have developed a new process to create defect-free patterns of nanocrystal films with nanoscale resolution, enabling applications in electronic devices, solar cells, and biosensors. The electrical conductivity of the films is roughly 180 times greater than that of conventional methods.
Researchers develop electrotactile stimulation devices that can respond to touch and finger movement, paving the way for smart surgical gloves. The devices could enable precise local ablations and ultrasound scans with unprecedented accuracy.
The new SFPV technology allows for the creation of high-quality p-n junctions in semiconductors that are difficult to dope by conventional chemical methods. Researchers demonstrate the effect in configurations using copper oxide and silicon, achieving stable electrically contacted p-n junctions.
Researchers at RIT and Raytheon are developing larger, cheaper infrared detectors grown on silicon wafers. This technology could enable more scientists to access infrared astronomy, find exoplanets, and study the universe's acceleration. The new detectors may also advance remote sensing and medical imaging.
Researchers at NPL have demonstrated a monolithic 3D ion microtrap array that can confine individual ions at the nanoscale and scale up to handle tens of qubits. This breakthrough device could enable faster quantum computation and advanced measurements.
Researchers from CCNY and UC Berkeley have created rewritable computer chips using a beam of light. The technique, published in Nature Communications, uses laser light to control the spin of an atom's nucleus for encoding information.
Researchers at UCSB have successfully synthesized a semiconductor material through genetic engineering and molecular evolution. By directing the evolution of enzymes, they created new mineral architectures with unique properties, opening up possibilities for specialized materials.
Researchers at Northwestern University have developed a new, all-solid-state solar cell that exceeds the performance of traditional Grätzel cells. The device achieves an impressive conversion efficiency of approximately 10.2 percent and is stable over time, addressing key limitations of current solar technology.
The team's research involves tapping into an unused range in the electromagnetic spectrum and a new microchip technology. This could reduce size and cost while creating images without multiple lenses inside devices.
Researchers at University of Cambridge use light to guide electrons through a barrier, creating new particles that interact strongly. This breakthrough has potential to lead to practical devices using quantum mechanics visible to the eye.
Scientists at the University of Copenhagen have developed a new method for cooling semiconductor membranes using lasers. By heating the material, they were able to cool its fluctuations to minus 269 degrees C.
Researchers have developed a way to create stronger and more efficient continuous wave T-rays, which can detect biological phenomena such as increased blood flow around tumorous growths. The new technology could lead to innovations similar to the 'tricorder' scanner used in Star Trek, enabling faster and more convenient medical scanning.
Paul Alivisatos, Berkeley Lab director, has won the Wolf Prize in Chemistry for his pioneering work on nanochemistry and artificial nanostructures. He shares the award with Charles Lieber of Harvard University, both recognized authorities on nanoscience and quantum dot technology.
Researchers at the University of Illinois have developed a technique to integrate compound semiconductor nanowires on silicon wafers, enabling high-performance solar cells. The approach uses densely packed arrays of tiny strands of III-V semiconductor that grow up vertically from the silicon wafer.
Scientists have made precise measurements of the quantum Hall effect in graphene, supporting the redefinition of the kilogram and ampere. This breakthrough aims to establish a universal and stable definition for these fundamental constants, linking them to natural quantities.
A new method developed at NIST enables the creation of unique features in diamond, allowing for precise cuts and potentially leading to improvements in nanometrology. The method could also improve MEMS devices used in cell phones, gyroscopes, and medical implants, making them more durable and efficient.
Researchers developed semiconductor materials that detect gamma rays, identifying plutonium and uranium. The method uses dimensional reduction to create heavy elements with immobilized electrons, making them suitable for detection.
A team of researchers at Purdue University has successfully created ultrapure gallium arsenide material that captures exotic states of matter. By cooling the material to extremely low temperatures and applying a magnetic field, they can create correlated states where electrons behave according to quantum mechanics.
Scientists at the University of Pennsylvania have developed a nanoscale plasmonic cavity that drastically reduces emission lifetime in semiconductors. By engineering high-intensity electromagnetic fields and controlling confinement, they achieve an unprecedented record-breaking emission lifetime measured in femtoseconds.
Prof. Eran Rabani's team at Tel Aviv University successfully dopes semiconductor nanocrystals, enabling the creation of p-n junctions in solar panels, light-emitting diodes, and other devices. The method allows for controlled electronic properties, opening up possibilities for more efficient and cost-effective applications.
Physicists at the University of Pennsylvania have demonstrated a dramatic increase in the combined on time of semiconductor nanorods when clustered together, providing new insight into this mysterious blinking behavior.
Researchers have developed a new technique to improve artificial photosynthesis by using cuprous oxide coated with a thin film of atoms, enabling the production of hydrogen from water. The process utilizes widely available materials and can be easily scaled up for industrial fabrication.
Researchers at Berkeley Lab have demonstrated localized surface plasmon resonances in doped semiconductor quantum dots, opening up possibilities for plasmonic sensing and manipulation of solid-state processes. This discovery extends the range of candidate materials for plasmonics to include semiconductors, offering advantages such as d...
Researchers at the University of Pennsylvania have made significant progress in controlling the characteristics of lead selenide nanowires, a promising material for semiconductors. By manipulating the exposure to oxygen and chemical hydrazine, they can alter the conductive properties between p-type and n-type devices.
Researchers have demonstrated a solar cell that responds to virtually the entire solar spectrum and can be manufactured using one of the semiconductor industry's most common methods. The new design promises highly efficient solar cells with practical production costs.
Researchers at JILA have created a terahertz radiation source that is unusually efficient and less prone to damage than similar systems. The technology uses ultrafast lasers and semiconductors to produce high-intensity output, making it suitable for applications such as detecting trace gases or imaging weapons.