Articles tagged with Crystal Structure
Researchers have observed the moment of initial crystal nucleation, revealing a stochastic fluctuation between disordered and crystalline states. The team proposed a new thermodynamic theory to explain this phenomenon, suggesting that energy barriers increase as crystals grow.
Research by Nagoya Institute of Technology scientists has clarified how crystal defects in half-Heusler Ni-based alloys contribute to high thermoelectric conversion efficiencies. The study used large-scale crystal structure simulations and XAFS spectra to analyze the effects of atomic defects on material properties.
A team of researchers has successfully fabricated atomically thin, 2D hexagonal boron nitride (h-BN) films that phase transition to strong, super lightweight cubic boron nitride (c-BN) at room temperature. The findings reveal a promising material for protective coatings, nanotechnology thermal applications, and deep-UV light emitters.
Researchers at RUDN University have synthesized and described new dibenzophenazine-based discotic liquid crystals with promising properties for industrial electronics. The crystals can withstand temperatures up to 330? and show potential in organic optoelectronic devices and solar panels.
Researchers at the University of Göttingen have successfully filmed a phase transition of a crystal structure using laser beams and ultrafast transmission electron microscopy. The experiment reveals the rapid formation and growth of tiny regions where the material undergoes a structural change, providing fundamental insights into light...
Researchers use novel techniques to observe salt crystal formation at the atomic level for the first time. The study confirms theoretical predictions about crystal formation and provides insight into polymorphism in crystal growth.
Researchers at the University of Illinois used artificial materials with defects to study topological features and demonstrate a practical approach for exploring unconventional materials. They created a method for trapping fractional charges on disclination defects, which signals the presence of certain kinds of topology.
Researchers at Skoltech have discovered a mixed oxide Na(Li1/3Mn2/3)O2 that shows promise as a cathode material for sodium-ion batteries. The compound exhibits high energy density, no voltage fade over multiple charge cycles, and moisture stability.
A team of researchers from the University of Minnesota has made a groundbreaking discovery in materials science by observing metallic lines in a perovskite crystal. The study, published in Science Advances, reveals new possibilities for creating transparent conductive materials that could be used in touchscreens and smart windows.
Researchers at UCI used advanced electron microscopy to study phonons near defects in cubic silicon carbide, a material used in electronic devices. The team's findings could improve thermal properties and provide insights into defect structures.
Researchers at Tokyo Metropolitan University have designed a new superconductor using high entropy alloys, preserving zero resistivity under extreme pressures. The new compound, Co0.2 Ni0.1 Cu0.1 Rh0.3 Ir0.3 Zr2, has a superconducting transition at 8K, offering a relatively high temperature for an HEA-type superconductor.
Researchers have discovered a strengthening mechanism in biological ceramics by studying the shells of bivalve mollusks. The shell's microscopic structure features nanoscopic defects that improve its structural strength and damage tolerance.
Scientists have created 2D CaCl crystals that display unexpected metallicity and room-temperature ferromagnetism. These crystals exhibit piezoelectricity-like behavior and have potential applications in transistors and nanotransistor devices.
Scientists have developed a new method to observe polymer crystallization in real-time, allowing for direct measurement of the rate, extent, and location of crystal growth. This breakthrough enables manufacturers to test polymer materials for specific mechanical properties during crystallization.
The study uses high-speed atomic force microscopy to image several intrinsically disordered proteins (IDPs) and identify parameters defining protein shapes and sizes. The technique reveals globules that appear and disappear, as well as transformations between fully unstructured and loosely folded conformations.
Scientists investigate the structural stability, electronic states, and transformation of crystal phases of a recently identified polymorph of gallium selenide monolayer. The study reveals that the new phase is metastable, with stability reversing upon applying tensile strain, and large energy barriers for phase transitions.
Researchers have developed a new method to visualize protein complexes in their natural environment, revealing the structure of the Arp2/3 complex and its role in cell motility. The study provides insights into the regulation and activity of this important protein complex, which could lead to better understanding of disease mechanisms.
Researchers from the US, China, and Russia have discovered a novel hydrogen hydrate that forms at room temperature and low pressure. The new form of ice has three water molecules per hydrogen molecule, showing promise for cost-effective hydrogen storage solutions.
A team of researchers has discovered a new complex europium hydride, Eu8H46, which has a structure of 54 atoms. The discovery was made possible by the efficient USPEX crystal structure prediction tool, which helped understand and explain experimental data.
A team of scientists has achieved strong tricolor photoluminescence (PL) in non-photoluminescent pyrochlore Ho2Sn2O7 under high-pressure treatment. The PL is retained and largely enhanced after pressure release, with the potential applications for pressure threshold sensors on extreme conditions.
Scientists at the University of Tokyo used molecular dynamics calculations to simulate glass-forming ability of metallic mixtures. They found that even small changes in composition can disrupt crystallization and lead to glassy states upon cooling. This breakthrough may lead to a universal theory of glass formation and cheaper, more re...
Researchers confirm flat band behavior in germanium's 2D 'bitriangular' lattice, a structure with potential for exotic states of matter like ferromagnetism and superconductivity. The discovery confirms earlier theoretical predictions and opens up new possibilities for materials design.
Researchers from the University of Barcelona, HZDR, and TU Darmstadt investigate the effects of simultaneously exposing alloys to magnetic fields and mechanical stress. They found that certain materials can boost their cooling efficiency by up to doubling it with commercially available neodymium permanent magnets.
A new laser-based method allows researchers to map the electronic structures of crystals at room temperature, revealing potential capabilities for solar cells, LED lights, and artificial photosynthesis. The technique also enables the design of novel semiconductor-based quantum devices.
Scientists have developed a natural potassium-tantalate-niobate (KTN) perovskite nonlinear photonic crystal with 3D spontaneous Rubik's domain structures, enabling compensation of phase-mismatch along arbitrary directions. This breakthrough paves the way for new applications in optical communications, quantum entanglement sources, and ...
Researchers have observed ideal type-II Weyl points in classical circuits, which exhibit strongly tilted band structures and linear degenerate points. These findings provide a new platform for studying Weyl physics and topological phenomena.
Scientists at the University of Groningen elucidated the structure of OpuA, a transport protein that imports glycine betaine to counteract dehydration. The protein's unique structure and mechanism allow it to regulate cell pressure and prevent cells from exploding under osmotic stress.
Researchers from TUM and RUB have developed flexible MOFs by adding carbon arms to the organic connecting pieces, allowing them to maintain their shape under pressure. The material's behavior is driven by configurational entropy, which enables it to transform between open-pored and closed-pore structures.
Researchers at St Petersburg State University have discovered a new mineral called petrovite with unique properties that make it promising for use in sodium ion batteries. The mineral's structural type is suitable for ionic conductivity, which could lead to the development of more efficient cathode materials.
Scientists have successfully controlled the composition of perovskite ions in hybrid organic-inorganic nanocrystals, maintaining their morphology and light-emitting efficiency. This breakthrough enables the synthesis of perovskites with varying compositions, advancing the development of efficient solar cells and light-emitting devices.
A new environmentally friendly method for restoring spent cathodes to mint condition could make it more economical to recycle lithium-ion batteries. Researchers at the University of California San Diego have developed a process that uses inexpensive and benign chemicals, consumes 80-90% less energy, and emits 75% less greenhouse gases.
The journal CrystEngComm has published a special issue to mark the Cambridge Structural Database's (CSD) milestone, featuring 33 papers showcasing diverse research enabled by the database. The CSD, curated by the CCDC, offers insights into solid-state and crystalline materials, from bond nature to MOF discovery.
Scientists have uncovered the chemical structure behind defects in white graphene that emit single photons, paving the way for controlled fabrication and practical applications. The study reveals a direct link between carbon incorporation and quantum emission, with potential implications for quantum sensing and computing.
The study confirms the accuracy of ODPL measurements and reveals the possibility of measuring optical absorption in crystals using this method. Researchers found that the origin of the two-peak structure in ODPL spectra is due to the Urbach-Martienssen absorption tail observed in many semiconductor crystals.
Researchers used Lorentz transmission electron microscopy to observe complex vortex-like magnetic structures in a Kagome crystal. The study suggests that 3D magnetic structures play a crucial role in understanding these configurations and provides an experimental proof of their existence.
Researchers develop new method to classify magnetic topological materials, identifying thousands of potential compounds with unique properties. This breakthrough could lead to significant advances in thermoelectric converters, quantum computers, and magnetic storage media.
Researchers determined the crystal structures of SARS-CoV-2 papain-like protease, revealing novel packing and solvent content. The findings provide valuable insight into inhibition mechanisms and may aid optimization of promising inhibitors for therapeutic development.
Researchers at Rice University have discovered a unique 2D material that enables the valleytronics phenomenon, touted as a possible platform for information processing and storage. The material has been found to be scalable and less susceptible to environmental degradation.
Researchers at UW-Madison develop a method to control the growth of twisting, microscopic spirals of two-dimensional materials. By utilizing screw dislocations and curved surfaces, they create new properties that can be exploited to study quantum physics on the nanoscale.
The 'nap' protein complex, essential for M. pneumoniae's attachment, movement, and transformation, has been clarified at the atomic level. The study reveals that P40/P90 proteins bind to sialic acid substance on cell surfaces, contrary to popular belief.
Researchers at Université de Genève develop non-flammable solid electrolyte that operates at room temperature, transporting sodium instead of lithium. The new battery technology has potential to store more energy and is being used to create a new generation of stable and powerful batteries.
A study developed a new crystal structure of deltamethrin that kills mosquitoes 12 times faster than the original form. This could lead to more effective malaria control even in areas with high insecticide resistance.
A new synthesis method for crystalline graphitic nanoribbons has been developed, utilizing pressure-induced polymerization of 1,4-diphenylbutadiyne. The resulting product is a graphene nanoribbon with an armchair edge and controlled width.
Researchers found that sapphire crystal faces exhibit contact angles far greater than 10°, with the (1-102) face being hydrophobic. This discovery provides insights into intrinsic wettability and its potential applications in materials science and technology.
Researchers at Hokkaido University discovered that carbon-carbon covalent bonds can expand and contract flexibly, a new phenomenon that could confer unique properties on organic compounds. The study found that these flexible bonds exhibit reversible expansion and contraction in response to external stimuli.
Crystallization in confined spaces is poorly understood, but researchers have gained insight into the process using colloid particles. The study reveals that kinetics, not thermodynamics, drives crystal structure formation in these systems.
Researchers describe a technique for designing DNA nanostructures that can self-assemble into specific shapes. The new framework efficiently searches the space of possible solutions, avoiding undesired assemblies and overcoming challenges in molecular self-assembly.
Scientists have introduced a new finding about hydrogen sulfide, producing superconducting structures at relatively high temperatures. The discovery uses stoichiometric H3S produced by heating elemental sulfur with excess hydrogen under pressure.
Researchers from the University of Cambridge used numerical experimentation to determine the limits of matt structural colour in the visible spectrum. They found that saturated, pure colors like reds, yellows, and oranges are difficult to recreate using this method, with blues and greens being the most feasible options.
Researchers successfully predicted properties of over 120,000 crystal structures using convolutional neural networks, confirming diamond's hardness and suggesting potential superhard materials exist.
A team of scientists from Arizona State University developed a microfluidic device that reduces sample size and waste in X-ray crystallographic experiments. The device, validated by publishing results in Nature Communications, allows for the determination of protein structures with high resolution and reduced sample consumption.
A study by researchers at KAUST reveals that image artifacts from astigmatism can misidentify crystal phases in 2D semiconductors, affecting the accuracy of scanning transmission electron microscopy. The team demonstrated that these effects can be mitigated using specific beam configurations.
Researchers at KAUST developed a novel approach to grow single-crystal transition metal dichalcogenide (TMD) nanoribbons using surface templates and ledge-directed growth. The resulting TMD nanoribbons exhibited defect-free structures and could be transferred onto new substrates without damage.
Researchers from the University of Freiburg and their collaborators have developed a new method to simulate the formation of quantum crystals using dipolar atoms. This allows for unprecedented precision in measuring structures that have not been observed before, providing insights into the quantum properties underlying crystal formation.
Scientists have discovered a novel disordered crystalline phase of silica that forms under dynamic shock compression, challenging longstanding assumptions about the material's behavior. The findings provide new insights into planetary formation and evolution, and may reveal details about the Earth's geologic history.
Researchers at Nara Institute of Science and Technology discovered a novel membrane protein YeeE that enables bacteria to uptake thiosulfate from the environment. This unique mechanism provides a sophisticated method for sulfur synthesis, potentially lowering production costs in industries like food, cosmetics, and pharmaceuticals.
Physicists at the University of Warwick demonstrate that applying a noble metal to a crystal's surface can excite its structure, enabling new electrical effects such as converting movement and heat into electricity. This technique has great potential for use in sensors, energy conversion, and mobile technologies.
Scientists have created a novel artificial material made of thin layers of nickelates, which can accurately control electronic properties and develop energy-efficient devices. By refining the layers to eight atoms, the entire sample behaves like a single material with one large jump in conductivity.
Researchers have successfully observed the interaction of two time crystals, a major breakthrough that could lead to applications in quantum information processing. The discovery showcases controlled interactions between time crystals, a crucial step towards harnessing their potential.
Researchers at Aalto University have successfully demonstrated the quantum-mechanical interaction of two time crystals, a breakthrough that could enable the construction of a quantum computer operating at room temperature. The experiment involved exchanging magnetic quantum excitations, or magnons, between the two time crystals.