Articles tagged with Diamond
Researchers have resolved the dynamics of phase change in hexagonal diamond formation during meteor impacts. The team conducted in situ X-ray diffraction measurements of dynamic diamond formation on nanosecond timescales.
Researchers at Brookhaven National Laboratory have devised a method to trap and arrange nanoparticles in a way that mimics the atomic structure of diamond using DNA scaffolds. The technique, developed by Oleg Gang, employs fabricated DNA as a building material to organize nanoparticles into 3D spatial arrangements.
Researchers at North Carolina State University have discovered a new phase of boron nitride (Q-BN) and developed a technique to create cubic boron nitride (c-BN) at ambient temperatures and air pressure. The discovery has potential applications for high-power electronics, transistors, and solid-state devices.
Three diamonds found in Johannesburg show that plate tectonics was in operation on Earth as early as 3.5 billion years ago, revealing key findings about the ancient planet's history.
Researchers at Berkeley Lab and UC Berkeley demonstrate record-breaking NMR/MRI signal sensitivity through hyperpolarization of carbon-13 nuclei in diamond. The technique enables orders of magnitude sensitivity enhancement for NMR studies under ambient conditions.
Researchers from North Carolina State University have discovered a new phase of solid carbon, called Q-carbon, which has unusual characteristics such as ferromagnetism. They have developed a technique for creating diamond-related structures at room temperature and ambient atmospheric pressure using Q-carbon.
Researchers have discovered that diamonds can form in a simpler natural chemical reaction involving water and rock. This finding could lead to a better understanding of the Earth's deep formation processes.
Researchers at Materialytics, LLC have developed a new testing method to identify the sources of diamonds with an average accuracy of 98%. The technique analyzes signals from the carbon itself, making it applicable to all diamonds and providing scientific verification for conflict-free trade.
Researchers at Harvard University have developed a new class of Raman laser using nanoscale diamond resonator, enabling wider wavelength range and potential for improved telecommunications. The device works by converting one frequency of laser light to another, opening up possibilities for broadband data communications.
Researchers discovered that umbrella-shaped diamond nanostructures with metal mirrors can collect photons three to five times more efficiently than bulk diamond. This breakthrough could lead to applications in magnetic sensors and quantum computing.
Researchers have developed a method to use nanoscale diamonds to identify cancerous tumours before they become life-threatening. The technique involves attaching hyperpolarised diamonds to molecules targeting cancers, allowing for the tracking of these molecules' movement in the body.
Scientists at Sichuan University develop an alloy combining diamond and cubic boron nitride, exhibiting superior hardness and wear resistance when cutting through steel and granite. The novel process enables mass production of the alloy, which could revolutionize various industrial materials processing.
Researchers have successfully levitated individual nanodiamonds in a vacuum, enabling the creation of extremely sensitive instruments and potentially even larger-scale quantum systems. The system combines optical, spin, and mechanical degrees of freedom, allowing for precise control over the nanodiamond's motion and spin state.
Researchers have achieved record-high pressure to study osmium, finding that innermost electrons start interacting with each other due to extreme pressure. This phenomenon opens up new possibilities for discovering brand new states of matter.
Researchers achieve unprecedented pressures of up to 770 GPa, revealing osmium's structural stability and interaction between core electrons. The findings have implications for understanding physics and chemistry of highly compressed matter.
Researchers have successfully coherently manipulated an electron spin embedded in a diamond resonator using a mechanical oscillating system. The discovery enables fast spin oscillation and precise measurement, making it suitable for highly sensitive sensors and potentially revolutionizing quantum computing.
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.
The newly discovered Rhombophryne longicrus is an unusually long-legged new species of frog from Madagascar that challenges the traditional burrowing behavior of its relatives. Genetic analyses reveal close relationships to another diamond frog species, highlighting concerns over extinction due to habitat destruction.
Researchers found that subtle visual distractions caused significant deviations from the intended path, contrary to intuition. The study's findings suggest a new phenomenon where the brain employs a suppression mechanism to tune out bigger distractions, but struggles with less apparent ones.
Researchers have used ultra-short pulses of X-rays to create a film of shock waves in diamonds, providing new insights into the structure of these hard materials. The study reveals that intense shock waves can compress diamond by almost ten percent, opening up new perspectives on its dynamic behavior under high pressure.
Scientists have created tiny diamond-based probes that can measure temperature with high accuracy, from near-cryogenic cold to slightly above the melting point of aluminum. The probes use luminescent signals from green glowing diamond defects and can detect fast thermal variations.
Scientists at Argonne National Laboratory have found a way to create a material combination that demonstrates superlubricity, a highly-desirable property in which friction drops to near zero. The team used graphene and diamond nanoparticles to create a nanoscale phenomenon, but found that humidity inhibited the effect.
Researchers discovered that near wins, such as coming close to winning a game or scratch-off lottery ticket, can intensify motivational energy and lead individuals to pursue unrelated goals. This 'near win' effect is thought to extend motivation beyond the original goal, resulting in faster completion of tasks.
Researchers at MIT have created a new magnetic-field detector that is significantly more efficient than its predecessors. The device uses synthetic diamonds with nitrogen vacancies to measure magnetic fields and has the potential to be used in medical imaging, contraband detection, and geological exploration.
Scientists at the University of Illinois have determined the physical process dominating heat flow between metals and diamond, challenging previous theories. By applying extreme pressure to metal films on diamond, researchers found that phonons can 'feed' a higher frequency diamond phonon, regardless of metal stiffness.
Researchers studied a rare rock covered in small diamonds, speckles of garnet, and other minerals using X-ray machines to uncover its genesis. The findings suggest diamonds form at high temperatures and pressures, contradicting previous theories.
Researchers at TUM develop a method to extract optically stored information from nitrogen-vacancy centers in nanodiamonds electronically. The technique uses a direct transfer of energy to a neighboring graphene layer, enabling picosecond electronic detection.
New research from Arizona State University reveals that lonsdaleite is not a separate type of diamond but rather a structurally disordered form of ordinary diamond. The study found defects in the crystal structure caused by shock metamorphism, plastic deformation, or unequilibrated crystal growth.
A team of Carnegie scientists synthesized a novel form of silicon with a quasi-direct band gap, suitable for high-efficiency solar applications. The new allotrope, Si24, has an open framework structure and is stable at ambient pressure, making it potentially more effective than conventional diamond-structured silicon
A new method uses a pulsing laser to convert graphite into nanodiamond at room temperature, offering advantages over traditional methods such as lower cost and scalability. The technique has potential applications in various fields including biosensors, quantum computing, fuel cells, and next-generation computer chips.
The researchers have developed a novel measurement technique for MRI signals using a diamond sensor chip, detecting the signal from a single hydrogen atom and achieving an accuracy of better than one angstrom. This breakthrough brings them closer to imaging at the level of single molecules, with potential applications in structural bio...
Researchers at Carnegie Institution successfully produce ultra-thin diamond nanothreads, exhibiting superior strength and stiffness compared to existing nanotubes and polymer fibers. The discovery has significant potential for various applications, including advanced materials and space technology.
Researchers at Penn State University have discovered a method to produce ultra-thin diamond nanothreads with exceptional strength and stiffness. The discovery is based on compressing benzene molecules under high pressure, allowing them to form a strong tetrahedral core linked by hydrogen atoms.
Researchers at Moscow Institute of Physics and Technology have developed a new method for synthesizing ultrahard fullerite, a material with hardness values ranging from 150 to 300 GPa, surpassing diamond. The breakthrough synthesis requires lower pressures and can be achieved at room temperature, enabling industrial-scale production.
Scientists have found abundant nanodiamonds distributed across three continents, providing conclusive evidence of a 13,000-year-old cosmic impact. The discovery supports a hypothesis linking the impact to the mass extinction of megafauna in North America.
Scientists propose a new quantum computer architecture based on microscopic defects in diamond, which could lead to the development of reliable quantum computers. The architecture has great potential for miniaturization and mass production, similar to how transistors were miniaturized in classical computer science.
Scientists have created a way to plant imperfections called 'NV centers' at specific spots within a diamond lattice, advancing quantum computing and atomic-scale measurement. The technique successfully localized NV centers within a cavity approximately 180 nanometers across.
Rice chemist Ed Billups and colleagues created nanodiamonds in hydrogenated anthracite coal, but smaller diamonds degraded with subsequent images taken under an electron microscope. The researchers found a window of stability for diamonds within a range of 19-52 angstroms.
Rice University scientists have found that a mixture of diamond nanoparticles and mineral oil outperforms other types of fluid in heat transfer applications. The researchers tested the nanofluid at concentrations up to 0.1 percent weight and found significant improvements in thermal conductivity, while maintaining a usable viscosity.
Researchers at Ohio State University demonstrated that diamond wires can transmit spin, a magnetic effect that could revolutionize computing. The discovery challenges conventional methods of measuring spin dynamics and has the potential to make computers faster and more powerful.
A University of Alberta team has discovered a water-rich mineral called ringwoodite, containing 1.5% water by weight, deep beneath the Earth's crust. This finding confirms scientific theories about massive volumes of water trapped between 410-660 km below the surface.
Researchers have successfully used flawed but colorful diamonds as sensitive magnetometers to study high-temperature superconductors. These diamond sensors can measure tiny magnetic fields in exotic materials and even human tissue, offering a new tool to explore the physics of these poorly understood materials.
Researchers discover a defect in synthetic diamond that allows them to measure and potentially manipulate electrons, enabling new 'quantum technology' for faster information processing. The discovery could exponentially increase the computing capacity of tiny machines.
Scientists at Rice University and Russia have calculated a road map for creating ultra-thin diamond films without high pressure. The 'phase diagram' outlines conditions necessary to turn stacked graphene sheets into flawless diamond lattices, with potential applications in nanocapacitors, electronics, and nano-optics.
Researchers have developed new silk-coated diamond particles that can be injected into living cells to provide a novel technique for biological imaging and drug delivery. The silk coating enhances the brightness of the nanodiamonds while preserving their optical properties, making them safe for use in the body.
A team of researchers from University of California, Riverside claims that ancient zircons contain 'diamonds' which are actually fragments of polishing compound used in the laboratory analysis. The discovery was made using high-resolution electron microscopy and suggests no indigenous diamonds exist in these samples.
A recent study by Mark Baker and colleagues has identified nine proteins that contribute to the cherished aroma of black Périgord truffles. The researchers also discovered biomarkers of authenticity, freshness, and perfume maturation, shedding light on this culinary delicacy.
Researchers at Cambridge's Cavendish Laboratory have achieved high coherence in nitrogen-vacancy centers of nanodiamonds, enabling the creation of ultra-precise nanoscale magnetic field and temperature detectors. This breakthrough could enhance our understanding of chemical reactions within single cells and signalling in neural networks.
Researchers have recorded unprecedented observations of energy moving through diamond impurities, providing a starting point for new insights into critical electronic-state phenomena. The findings hold broad implications for magnetometry, quantum information, and sensing applications.
Scientists have developed a method to produce nanodiamonds using ethanol vapor at room temperature and pressure, requiring no surface growth. The discovery holds promise for various applications, including flexible electronics, implants, and drug delivery devices.
A new study led by UA graduate student Johanna Teske reexamines the composition of a potentially diamond-rich exoplanet, finding it may contain less carbon than previously thought. The analysis, based on revised star observations, suggests that the 'diamond planet' could be more rocky than initially proposed.
A team of researchers has made the first detailed observation of how energy travels through diamonds containing nitrogen-vacancy centers, defects that can be manipulated with optical methods. The findings could help scientists understand the properties of these diamonds, which have potential applications in quantum computing and imagin...
A new study on carbonado diamonds reveals the presence of a 3D connected pore network, while another paper discusses sea-level change off New Jersey and ancient Sierra Nevada faulting. Meanwhile, volcanic activity in Hawaii is examined through core-seismic-log integration.
Researchers at the University of Rochester have successfully levitated nanodiamonds in free space using a technique called laser trapping. The experiment enables the measurement of photoluminescence from defects inside the diamonds, which could lead to breakthroughs in quantum information and computing.
Researchers from UC Riverside and international partners discover a new mineral, cubic boron nitride, named qingsongite, which has unique properties resembling those of diamond. Qingsongite was found in the southern Tibetan mountains under extreme conditions and has been officially approved by the International Mineralogical Association.
Researchers studied China's Qinling and Tibetan Plateau orogens, finding evidence of late-stage foreland growth. In India, scientists proposed a cost-effective method for locating diamonds using geological, geochemical, and geochronological data. Additionally, a Middle Paleozoic continental arc was identified in southern China, providi...
Researchers from Boston College and Naval Research Laboratory discovered boron arsenide's unexpectedly high thermal conductivity, rivaling that of diamond. The material's unique vibrational properties allow for efficient heat conduction at specific frequencies.
Researchers at Advanced Diamond Technologies successfully created thin films of boron-doped diamond at low temperatures, potentially enabling a wider range of applications for electronic devices. The new method expands the possibilities for depositing high-quality diamond coatings without damaging sensitive electronics.
Researchers at Washington State University have created a superconductor capable of transmitting electrical current with zero resistance. By compressing carbon disulfide under high pressure and cooling it to near absolute zero, they achieved a material that exhibits properties like magnetism and superhardness.
Researchers at Berkeley Lab have developed a technique to hyperpolarize carbon-13 nuclear spins in diamond, enhancing NMR/MRI sensitivity by many orders of magnitude. This method uses a low-strength magnetic field and is applicable to various applications, including molecular detection and quantum information processing.