Articles tagged with Nanocrystals
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Researchers at Berkeley Lab developed graphene-wrapped magnesium nanocrystals with enhanced hydrogen storage properties. The study found that an atomically thin layer of oxidation forms on the crystals without degrading their performance.
Researchers create model to test existing theories on electron transport mechanism in nanomaterials, laying groundwork for AI-powered machine learning devices. They also explore neural networks inspired by the human brain and nervous system.
Scientists have successfully demonstrated electronic spin effects in wet-chemically produced nanocrystals, opening doors to more efficient and powerful electronics. The Rashba effect, a phenomenon normally not observed due to high crystal symmetry, was controlled by varying layer thickness, light used, and electric fields.
Researchers at University of Illinois create first significant examples of optical crystallography for nanomaterials, improving precision of nanocrystal engineering and understanding of reactions. The new technique uses absorption spectroscopy to identify crystal type in liquid-dispersed nanomaterials, offering simple, accurate analysis.
Researchers at Kumamoto University have developed highly sensitive gas sensors for detecting volatile organic compounds, with the ability to detect biomarkers in the parts-per-billion range. The sensors use anisotropically shaped SnO2 nanocrystals with precise control over particle size and pore distribution.
Researchers directly determined the relation between bandgap energy and size/shape of individual CsPbBr3 nanocrystals, revealing effective coupling between semiconductor NCs upon close contact. This study provides unique insights into interacting behavior of neighboring NCs and paves the way for designing large quantum structures.
Researchers have developed a method to improve the performance of cellulose nanocrystals, making them suitable for sustainable materials, biomedical applications and green manufacturing. The improved nanocrystals can be used in dental regenerative medicine, replacing synthetic materials with an environmentally friendly alternative.
Researchers at NIST and Shandong University have found a way to grow large crystals that could revolutionize laser technology. The microcrystals outperform conventional crystals in some ways, but their performance challenges scientific theory.
KAUST researchers develop a nanocrystalline material that rapidly converts blue light into white light, enabling data speeds of up to 2 GB/s. This innovation has the potential to replace traditional LEDs for energy-efficient lighting and enable new applications like VLC.
Researchers at ICFO have developed a solution-processed, semi-transparent solar cell based on AgBiS2 nanocrystals, which are non-toxic and abundant. The cells achieved power conversion efficiencies of 6.3%, competing with current thin film technologies, and offer potential as a low-cost alternative to traditional solar cells.
Researchers at UC Santa Cruz developed a new capping strategy to stabilize perovskite nanocrystals, overcoming instability issues with organometal-halide materials. The approach uses unique branched ligands to control particle size and improve photoluminescence quantum yield.
A Wayne State University researcher aims to improve upconversion nanocrystals' composition and atomic structure to expand the library of bright and multicolor emitters. The project is expected to lead to better diagnosing and treatment plans for numerous health issues by enhancing imaging and chemical sensing of disease biomarkers.
Researchers at the University of Pennsylvania have created the first transistors made entirely of nanocrystal 'inks', opening up new possibilities for flexible and wearable electronics. The new process, which uses lower-temperature equipment, can be applied to larger areas and is compatible with a wide range of materials.
Researchers at Kyoto University have discovered a method to replace surface ions of copper oxide nanocrystals with sodium sulfide, transforming them into hollow copper sulfide nanocages. This process allows for the creation of cadmium sulfide and zinc sulfide nanocages through subsequent chemical conversions.
Researchers at Berkeley Lab have developed a new materials recipe for a battery-like hydrogen fuel cell, pushing its performance forward in key areas. The graphene-encapsulated magnesium crystals act as 'sponges' for hydrogen, offering a compact and safe way to store hydrogen.
Researchers demonstrated triplet exciton energy transfer from semiconductor nanocrystals to surface-bound molecular acceptors, extending the original excited state lifetime. This finding has implications for fields like solar energy conversion and optoelectronics.
Researchers discovered that solid materials, including nanocrystals and the Earth's crust, share similar deformation properties due to slip-avalanches. This study enables the transfer of results across different scales and materials, providing new tools for predicting material deformation and hazard prevention.
A novel computational framework allows researchers to predict the properties of cellulose nanocomposites by modifying surface chemistry. The approach enables designing materials with targeted properties, such as improved hydrogen bonding with polymers.
Researchers in China have developed tiny nanocrystals that can specifically target and identify cancer cells, potentially leading to earlier diagnosis and treatment. The nanocrystals, made from heavy metals lanthanum and europium, can be used as 'staining' agents to highlight diseased cells under a microscope.
A novel combination of techniques is used to create a biocompatible nanodevice that can deliver localized heating to cancer cells while accurately sensing temperature with diamond nanocrystals. This allows for precise targeting of biological molecules and effective thermal cancer therapy.
Researchers have found that crystals can form in complex shapes using multiple pathways, challenging traditional theories. This new understanding has implications for materials science, health research, and basic science studies, including the formation of shells, teeth, and bones in animals.
Researchers developed a new technique to visualize and track molecules in real-time, revealing their dynamic behavior in living cells. This provides a more realistic picture of how molecules move within cells, shedding light on previously hidden factors involved in nanocrystal assembly.
Researchers at Université de Genève discover that chameleons change colors through the active tuning of a lattice of nanocrystals in iridophores. This unique system allows for rapid shifts between efficient camouflage and spectacular display, while also providing passive thermal protection.
A review by Virginia Tech scientist Maren Roman highlights discrepancies in studies about cellulose nanocrystals' impact on the respiratory system, gastrointestinal tract, skin, and cells. More research is needed to determine their potential adverse health effects.
A comprehensive assessment of cellulose nanocrystal environmental toxicity is crucial for their industrial applications. The latest evidence highlights potential adverse health effects through various types of exposure.
Researchers at ETH Zurich developed a physical model explaining electron transport in nanocrystal solar cells, which could lead to improved efficiency. The model reveals that nanocrystal size can be controlled to optimize absorption of sunlight, enabling the creation of flexible and thin solar cells with higher performance.
Researchers have successfully applied tunable luminescent nanocrystals to high-speed scanning technology, detecting multiple viruses within minutes. The technology enables screens that identify thousands of different target molecules simultaneously, saving time for future patients and potentially life-saving treatment.
Researchers at MIT have developed a new type of tiny particle that can be used to authenticate currency, electronic parts, and luxury goods. The particles contain colored stripes of nanocrystals that glow brightly when lit up with near-infrared light.
Scientists from ETH Zurich have synthesized uniform antimony nanocrystals, which can store both lithium and sodium ions, making them prime candidates for anode materials in both lithium-ion and sodium-ion batteries. The researchers found that the optimal size-performance relationship of these nanocrystals is between 20-100 nanometres.
Researchers have discovered cellulose nanocrystals with remarkable mechanical properties, including stiffness comparable to steel. These tiny structures, abundant in nature, offer a potential green alternative to carbon nanotubes for reinforcing materials.
Researchers at Purdue University and Macquarie University have developed a way to control the length of time light from luminescent nanocrystals lingers, exponentially boosting detection capabilities. This technology can identify thousands of different target molecules simultaneously, far surpassing current limits.
The discovery enables rapid localization and measurement of cells within living environments at the nanoscale, such as changes to a single cell in response to chemical signals. The ultra-sensitive nanoparticles, or SuperDots, can detect individual particles with thousand times more sensitivity than existing materials.
Berkeley Lab researchers observed direct size-dependence in metal nanocrystal phase transformations during reactions with hydrogen gas. This discovery holds key findings for optimizing commercial applications, including hydrogen storage systems, catalysts, fuel cells, and batteries.
Researchers have designed a new material that can dynamically modify sunlight as it passes through a window, maximizing both energy savings and occupant comfort. The coating provides selective control over visible light and heat-producing near-infrared (NIR) light.
Researchers at Vanderbilt University developed a new method to measure nanocrystals' adsorption and release of hydrogen and other gases. The technique revealed that the size of nanocrystals has a stronger effect on the rate of gas adsorption and release than previously expected, with smaller particles absorbing more gas faster.
Researchers at Penn and two institutions developed a way to precisely design active elements of catalysts, identifying critical parameters for improvement. This new paradigm can fine-tune catalysts used in various applications, including environmental remediation and material production.
Scientists have created a general strategy for making a wide range of nanoparticles in different size ranges, compositions and architectures. The new technique uses star-shaped block co-polymer structures as 'nanoreactors' to control the size and uniformity of colloidal nanocrystals.
Researchers used a revolutionary X-ray laser to freeze the motion of atoms in gold nanocrystals, revealing unusual supersonic vibrations. The new images support theoretical models for light interaction with metals and have potential applications in understanding material response after perturbation.
Researchers at the University of Michigan and MIT have discovered a method to control the arrangement of nanocrystals into complex patterns, including the herringbone style. By understanding the interactions between particles, they can design materials with specific properties, revolutionizing the field of nanotechnology.
Researchers have created a new type of semiconductor technology based on two-dimensional nanocrystals, which can be used to create smaller transistors. The material has a bandgap, allowing it to switch on and off, making it suitable for digital transistors.
Researchers developed a technique to measure the structure of gold nanocrystals under extremely high pressures, resolving distortion issues with X-ray beams. This breakthrough could lead to improvements in nanomaterials and a better understanding of planetary interiors.
Researchers have successfully imaged the changes in morphology of gold nanocrystals under pressures of up to 6.5 gigapascals, solving a long-standing problem in measuring nanomaterial structures. The study shows that the nanocrystals undergo plastic flow, becoming more fluid-like at high pressure, and reveals new insights into the beha...
Researchers found that even three-nanometer-sized nanocrystals can suffer from dislocation-mediated plastic deformation when subjected to stress. This challenges the long-held assumption that ultrafine nanocrystals are defect-free.
A team of scientists has made a breakthrough in understanding how materials behave under stress, leading to the creation of stronger and longer-lasting materials. Nickel nanocrystals have been found to deform permanently under intense pressure, which could help physicists and engineers create more resilient materials.
Researchers at the University of Chicago are developing 'designer atoms' through nanocrystal assembly, offering new opportunities for solar energy, quantum computing, and functional materials. By controlling electron correlation, they aim to create strongly correlated systems with unique properties.
A team of researchers at the University of Pennsylvania has developed flexible, low-voltage electronic circuits using cadmium selenide nanocrystals. The new technology offers improved performance and manufacturing cost compared to traditional silicon-based electronics, enabling potential biomedical and security applications.
Researchers at The Ohio State University have developed a method to purify and enrich magnetotactic bacteria, which can produce magnetic nanocrystals. These bacteria are found in aquatic environments worldwide and possess unique properties that allow them to align with the Earth's magnetic field.
Researchers at MIT have developed a method to create alloys with extremely tiny grains that remain stable even under high heat. The new material, made of tungsten and titanium, has exceptional strength and impact resistance, making it suitable for various applications.
A new video protocol has been developed to synthesize durable nanocrystals that can harvest solar energy efficiently. The technique, published in JoVE, focuses on the liquid phase synthesis of two nanocrystals that produce hydrogen gas or electricity when exposed to light.
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.
A new X-ray imaging technique has produced dramatic three-dimensional images of gold nanocrystals, revealing their structure for the first time. The improved image quality will likely lead to a better understanding of nanomaterials' properties.
An international research team has developed a new nanocrystallography technique that captures 3D images of biomolecules in action using the Linac Coherence Light Source X-ray laser. This method allows scientists to study molecules at room temperature without radiation damage, enabling the creation of atomic-scale resolution models.
Researchers mapped ferroelectric structural distortions in individual nanocrystals using the world's most powerful transmission electron microscope. The study indicates that a monodomain ferroelectric state remains stable down to dimensions of less than 10 nanometers, and room-temperature polarization flipping was demonstrated down to ...
Scientists at UC San Diego created metallic nanocubes that spontaneously organize into larger structures with precise orientations, enabling ultra-sensitive optical sensors and compact optical circuitry. The technique could revolutionize the development of new sensing technologies and optical devices.
A team of researchers from Berkeley Lab and SLAC used ultrafast X-rays to produce the first images of photosystem II microcrystals at room temperature. The study reveals new insights into the complex's composition and atomic structure, crucial for understanding its role in photosynthesis.
Scientists at USC have created a pathway to affordable solar cells made from tiny nanocrystals that can be printed onto clear surfaces. The new method overcomes a key challenge in liquid solar cell technology by stabilizing the nanocrystals and allowing for efficient electricity transmission.
A team of researchers has created glass-based inorganic LEDs that produce light in the ultraviolet range, paving the way for implantable biomedical devices. The new devices are scalable, chemically stable, and can be used in harsh environments, making them suitable for applications such as medical diagnostics and treatment.
Researchers have discovered a novel route for synthesizing EMT zeolites with large pores at near ambient temperature and low pressure. This approach avoids the use of expensive templates, enabling potential industrial applications in catalysis and adsorption.
Researchers have discovered a way to self-assemble uniform polyhedral silver nanocrystals into densest packings and exotic superlattices, opening the door to simpler fabrication of plasmonic materials. The technique uses gravity-driven sedimentation and allows for precise control over superlattice dimensions.
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.