Articles tagged with 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.
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.
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 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.
Researchers at UCLA are developing spin-transfer torque magnetoresistive random access memory (STT-RAM) with great potential over current memory technologies. The technology has achieved densities comparable to dynamic random access memory and speeds comparable to static random access memory.
Researchers have developed dual-diameter nanopillars that absorb light as well or even better than commercial thin-film solar cells, using less semiconductor material. The new structure, designed by Ali Javey and his team, enables fine control over geometry and shape of the single-crystalline nanopillar arrays.
UCLA Engineering has received a $6 million award from NIST to construct the Western Institute of Nanotechnology on Green Engineering and Metrology (WIN-GEM), a cutting-edge facility supporting energy conservation technologies in microelectronics and nanotechnology.
A new study by Lifeloc Technologies reveals popular consumer breathalyzers to be inaccurate and inconsistent in measuring breath alcohol content. The company's independent report confirms these devices' notorious inaccuracy, warning consumers against relying on them for accurate BAC measurement.
Scientists used a unique frequency comb system to detect minute traces of contaminant molecules in arsine gas, which can cause semiconductor defects. The technique offers a combination of speed, sensitivity, specificity, and broad frequency coverage.
Researchers at Rice University discovered that strong magnetic fields can transform highly conductive carbon nanotubes into semiconductors. By applying a magnetic field, a band gap opens up and the material becomes an insulator.
Researchers demonstrate first full quantum control of qubit spin in tiny colloidal nanostructures, advancing quantum computing and energy generation technologies. The discovery enables precise control over light-matter interactions, paving the way for more efficient photovoltaic cells and potential breakthroughs in climate change.
Researchers have made a breakthrough in the development of solar cells, capable of harnessing more energy from sunlight. By using quantum dots and titanium dioxide, they can capture and transfer excess electrons, leading to potentially higher efficiencies. However, further research is needed to eliminate energy loss in the next step.
Researchers at Lawrence Berkeley National Laboratory are developing gamma-ray detectors to improve cancer therapy using heavy-ion beams. The Compact Compton Imager 2 (CCI-2) is a compact imager that can provide real-time images of the ion beam's energy distribution in tumors.
Researchers at Arizona State University have developed a new quaternary alloy semiconductor nanowire material that can be used to create more efficient photovoltaic cells and light-emitting diodes. The alloy, which has a wide range of band gaps, can also be used to produce colors for displays.
Researchers at Princeton University have made a breakthrough in quantum physics, discovering an equation that allows computers to model the properties of materials up to 100,000 times faster than previously possible. This new formula enables scientists to study the flaws in materials more effectively, leading to potential advancements ...
Researchers from Empa have successfully synthesized a graphene-like polymer with well-defined pores using a 'bottom-up' synthesis method. The new material boasts finer pores than traditional lithographic processes, opening up new possibilities for applications in electronics and other fields.
Researchers at Vanderbilt University have successfully demonstrated the fractional quantum Hall effect in clean graphene, a two-dimensional crystalline material. This breakthrough exploits graphene's unique electrical properties to create novel devices and test theoretical models of extreme environments.
Researchers at Rutgers University have discovered novel electronic properties in 2D carbon structure graphene, exhibiting strongly correlated behavior among charge-carrying particles. The findings are similar to superconductivity observed in some metals and complex materials, enabling the flow of electric current with no resistance.
Professor Christian Wetzel is working to develop efficient green LEDs to bridge the gap in color technology. His goal is to produce true white LEDs and enable widespread adoption of energy-efficient lighting solutions.
Researchers at Arizona State University and Technical University of Eindhoven have made a breakthrough in creating nanoscale lasers, which can improve computer performance and speed up Internet access. The new design uses a combination of semiconductors and metals to confine light and achieve a laser with the smallest thickness ever pr...
Researchers have developed a new design for solar cells using arrays of nanoscale pillars, each a single crystal, to efficiently convert light into charge-carrying electrons. The efficiency of the test device was measured at six percent, which is higher than most photovoltaic devices based on nanostructured materials.
Researchers developed an electronic glue to overcome a hurdle in semiconductor nanocrystal manufacturing. The innovation increases electronic coupling between nanocrystals, paving the way for mass-produced, low-cost device applications.
A team of researchers from Berkeley Lab has made a breakthrough in controlling the electric and magnetic properties of a multiferroic material by applying electric fields. The study uses calcium-doped bismuth ferrite film, creating p–n junctions that can be created, erased, and inverted with ease.
Scientists have developed non-blinking semiconductor nanocrystals, overcoming a long-standing challenge in their applications. The discovery enables the use of nanocrystals in devices like low-threshold lasers and solar cells, as well as biological imaging and tracking.
Boston College researchers have developed a titanium nanostructure that improves the efficiency of energy transport, achieving a peak conversion efficiency of 16.7 percent under ultraviolet light. The novel material enhances the 'water-splitting' technique by collecting and transporting electrons with minimal energy loss.
Researchers at University of California, Berkeley and University of Massachusetts Amherst developed a new technique to self-assemble nanoscale elements, enabling densities 15 times higher than previous methods. This approach could lead to improved data storage capacity and energy-efficient applications.