Articles tagged with Nanocrystals
Researchers at Berkeley Lab have created bilayered nanocrystals with multiple catalytic sites, enabling sequential and selective catalytic reactions. This approach could improve design of high-performance nanostructured catalysts for multiple-step chemical reactions.
Researchers at TU Delft have discovered that adding nanocrystals to solid electrolyte material can significantly increase the efficiency of fuel cells. The addition creates more space in the network, allowing protons to move freely and improving conductivity.
Researchers from Lawrence Berkeley National Laboratory created a durable and efficient photocatalyst that can collect solar energy to extract hydrogen from water. The disorder-engineered nanocrystal absorbs infrared light, making it attractive for use in clean-energy technologies.
Researchers incorporated nanocrystals of iridium into flash memory designs, demonstrating excellent memory properties and thermal stability. Iridium's high work function and melting point make it an attractive option for improving nonvolatile memory with enhanced trapping ability.
Researchers at NIST have developed a simple process for producing nanocrystals that enable studies of physical and chemical properties affecting nanoparticle interaction. The process allows precise control over size, shape and composition, creating perfect-edged nanocubes with uniform size.
A team of chemists, physicists and materials scientists at the University of Pennsylvania created a new method to rapidly grow centimeter-scale membranes of binary nanocrystal superlattices by crystallizing a mixture of nanocrystals on a liquid surface. The study demonstrates a new way to control nanocrystal size, shape and concentration.
Researchers at Berkeley Lab have developed a method to design nanocomposites with desired properties, using a mix-and-match approach to combine materials on the nanoscale. This process enables new possibilities for electronic and energy technologies, including improved battery electrodes, photovoltaics, and electronic data storage.
Researchers have made a breakthrough in engineering nanoscale materials, enabling the creation of large-scale arrays of individual structures with precise locations. This discovery could lead to advancements in sensing, transistors, and other applications.
Researchers create a method to image proteins at ultrafast speeds using x-ray pulses. The technique involves injecting tiny water droplets through a 'particle gun' into the path of bright, brief x-rays, which then diffract off the protein molecules.
Researchers have developed bio-friendly nanocrystals that act as individual investigators of activity within a cell. These nanocrystals can track proteins in real-time, allowing for the study of biomolecules one at a time. The breakthrough has significant implications for understanding complex biological systems.
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.
Researchers in France and Germany have successfully produced homogeneous samples of pure and very small fluorescent diamond nanoparticles with high yield. The novel process involves irradiating micron-size diamonds, milling, and purification steps.
Scientists have discovered a new type of non-blinking nanocrystal that can emit light continuously. The discovery, published in Nature, may lead to more affordable and versatile lasers, brighter LED lighting, and improved biological markers.
Researchers at Los Alamos National Laboratory have demonstrated that certain nanocrystals can generate more than one electron after absorbing a photon, increasing the potential for efficient solar cells. The study finds that these crystals can produce up to half as much energy per electron as bulk solids, offering promising results for...
Researchers discover nanominerals have a significant impact on Earth's systems, influencing climate, ecosystems and human health through their unique properties. Nanoparticles play a crucial role in the lives of ocean-dwelling phytoplankton, affecting carbon cycling and global temperatures.
The review article reveals that nanominerals exhibit a range of physical and chemical properties depending on size and shape, influencing earth systems in complex ways. This shift in understanding has significant implications for fields like environmental science and geology.
A new technique, nano-area coherent electron diffraction, has been developed to study the atomic structure of gold and other nanocrystalline materials. The technique reveals striking differences in surface atoms' arrangement compared to bulk crystalline surfaces.
Researchers have developed a new form of platinum nanocrystals with improved catalytic activity, enabling more efficient fuel oxidation and hydrogen production. The nanocrystals, with tetrahexahedral structures, remain stable at high temperatures and can be controlled in size, making them suitable for industrial use.
Researchers have developed cellulose nanocrystals that can block cell receptors, potentially leading to new vaccine formulations. The crystals can also be used for targeted drug delivery and precise inkjet printing, overcoming safety concerns associated with traditional methods.
A team of researchers led by Kyung Byung Yoon found that manually applying microcrystals to a substrate yields superior results compared to self-assembly methods. The manual process allows for denser packing and more regular orientation of microcrystals, making it preferable in the overlapping range of 0.5 to 3 µm.
Researchers at the University at Buffalo have developed a novel drug delivery system using nanocrystals of hydrophobic drugs, which can target tumors with comparable efficacy to conventional surfactant-based systems. The system eliminates the need for separate carriers, reducing toxicity and improving drug penetration.
Researchers discovered that germanium nanocrystals in silica glass don't melt until temperatures rise nearly 200 degrees Kelvin above the melting point of bulk germanium. The nanocrystals also require more than 200 K below the bulk melting point to resolidify.
Researchers at University College London develop a novel method for obtaining full 3D images of nanocrystal interiors using coherent X-ray diffraction imaging. This technique allows for the assessment of defects in materials, which are essential for specific properties, and enables single-molecule imaging with X-ray free-electron lasers.
Researchers at Berkeley Lab have developed dual nanocrystal solar cells that are as cheap and easy to make as organic polymer-based solar cells. The new devices, comprising cadmium-selenide and cadmium-telluride, offer improved stability in air due to the absence of organic materials.
High-intensity ultrasound is used to generate nanoparticles of molybdenum disulfide or oxide, which bind to tiny silica spheres. Hollow shells are then created by etching away the silica, resulting in nanospheres with increased edge-surface area for enhanced catalytic activity.
Researchers at Berkeley Lab have discovered a way to transform nanocrystals into other materials with different physical and chemical properties through cation exchange reactions. This process is faster and more reversible than previously thought, opening up new possibilities for the development of nanotechnology.
Researchers at Hebrew University create gold-tipped nanocrystals that offer a solution to problems of building nanoscale transistors and electronic circuits. These nanodumbbells provide strong chemical bonds between the gold and semiconductor, leading to good electrical connectivity.
Researchers at the Max Planck Institute have developed a novel technique for tailoring silicon nanocrystals on 4-inch wafers, enabling the mass production of these tiny crystals. By controlling the size and position of the nanocrystals, the team aims to improve the efficiency of light-emitting devices such as LEDs.
Researchers at Purdue University have developed a process to produce metal nanocrystals in large quantities at low cost, containing valuable nanocrystals in common machining processes. The discovery could lead to widespread uses of nanocrystals in various industries, including automotive and electronics.
Researchers at Technion-Israel Institute of Technology have created plastic LEDs that can efficiently produce near-infrared radiation, a crucial component for high-speed fiber optic communications. The new technology has the potential to cut costs and increase efficiency, paving the way for global networks in homes.
Researchers at UC Davis report a significant breakthrough in superplasticity, achieving the ability to stretch metal without breaking at lower temperatures. The discovery involves using nanostructured materials, which are 1,000 times smaller than microcrystals, resulting in stronger and more practical materials.
Researchers developed nanometer-sized semiconductor crystals that emit multiple colors of light, enabling the simultaneous measurement of several biological markers. These crystal probes show improved photochemical stability and fluorescence lifetime compared to conventional dye molecules.
Scientists at ORNL have synthesized a range of metal and semiconductor nanocrystals embedded in materials like silica and sapphire. These nanocrystals could enable faster, smarter computers and improved flat-panel displays.