Articles tagged with Diamond
New research has confirmed that salts trapped in many diamonds come from ancient seabeds buried deep beneath the Earth's crust. Marine sediment reacts under extreme pressures and temperatures to produce a balance of salts found in diamond.
Scientists create precise nitrogen-vacancy colour centres in diamonds using a new method, enabling the production of arrays of single NV centres with exactly one colour centre at each site. This facilitates the engineering of integrated devices and paves the way for the delivery of compact and robust quantum technologies.
Researchers at the University of Washington developed a method to synthesize nanodiamonds with intentional doping, enabling useful traits for medical research, computation, and beyond. The team used high-pressure and temperature to dope nanodiamonds with silicon, argon, and other elements.
Researchers developed a highly-sensitive nano-thermometer that accurately measures temperature at the nanoscale using diamond nanoparticles. The sensor exploits the properties of these tiny particles on the quantum level, enabling non-invasive temperature measurements in biological samples and electronic circuits.
Researchers used diamond inclusions to study the formation of mantle keels, which stabilize continental crust. The study found that thickening and stabilization occurred when mantle sections were squeezed by ocean floor material, resolving a long-standing debate.
Research suggests that eclogitic diamonds originate from oceanic crust, not marine sediments, providing new insights into diamond formation and the deep carbon cycle. The study found that the oceanic crust contains a large reservoir of carbon, which is then recycled into diamonds in Earth's mantle.
A new theory by QUT geologist Professor Balz Kamber explains why diamonds formed as precious gemstones rather than graphite, contradicting a common belief. The study suggests the upper mantle was relatively cool, leading to diamond formation during the Archaean era.
Recreating Earth's interior conditions helps scientists understand diamond formation and carbon transport in the mantle. Carbonate minerals remain stable up to depths of 1,000-1,300km before reacting with surrounding silica to form bridgmanite.
Researchers at MIT and international partners have developed an AI-powered method to explore the possibilities of strain-engineered materials. By applying machine learning methods, they can accurately predict how different amounts and orientations of strain would affect a material's properties.
A new hardware platform based on isolated electron spins in a two-dimensional material was demonstrated by researchers at the University of Pennsylvania. The system utilizes defects in sheets of hexagonal boron nitride to manipulate individual quantum states, enabling potential applications in quantum technology and sensing.
Scientists have created a high-quality diamond MEMS sensor chip that outperforms existing silicon sensors in terms of sensitivity and reliability. This breakthrough could enable the development of highly sensitive and reliable sensors for various applications, including disaster prevention and medicine.
Researchers have discovered that nanodiamonds can be used as photocatalysts to produce methanol from CO2 and water. The process requires UV light excitation but recent studies suggest that intermediate stages can be created in the band gap by doping with foreign atoms, enabling visible spectrum usage.
Researchers developed a computer model that simulates the conditions of explosions on short time scales. The new results reveal that a delicate balance of temperature and pressure is necessary for nanodiamonds to form. This study uses atomic-level simulations to provide insights into the formation process.
Researchers at TU Wien have measured the phenomenon of superradiance in tiny diamond defects, where one atom causes other atoms to emit energy as light. This creates an intense flash of quantum light that happens within 100 nanoseconds.
Hydroxyl-terminated diamond surfaces created via water vapor annealing maintain atomically flat surfaces and remove two-dimensional hole gas layers, enabling high-temperature operation.
Sandia National Laboratories engineers a platinum-gold alloy that surpasses diamond and sapphire in wear resistance, making it ideal for high-friction applications. The new alloy could save the electronics industry over $100 million annually by reducing material costs and improving durability.
Researchers discovered that blue diamonds form at least as deep as the transition zone between the upper and lower mantle. The boron element was incorporated into water-rich minerals like serpentine during geochemical reactions between seawater and oceanic plate rocks, traveling far deeper into the mantle than previously thought.
Researchers successfully created nitrides, a previously considered impossible material, using a direct synthesis method under ultra-high pressure. The development of these materials could lead to improved cutting tools and innovative applications in electronics.
Contrary to expectations, diamond doves don't adjust their movements to accommodate flexible perches. They use generalized behaviors regardless of perch stiffness, losing energy during takeoff on flexible branches.
Researchers found that cratonic roots may contain 1 to 2 percent diamond, with a total estimated value of quadrillion tons. The discovery challenges previous assumptions about the rarity of diamond and sheds light on the geological scale of its presence.
Scientists have created high-thermal-conductivity crystals of boron arsenide that could help manage heat in computer chips. The new material's properties make it comparable to silicon, a key component of current chip technology.
Princeton researchers successfully implant diamonds with silicon vacancies to create a quantum repeater, enabling the transmission of fragile quantum information over long distances. This breakthrough could lead to ultra-secure communication networks and new quantum computers solving complex problems.
Researchers have discovered a new tungsten boride that surpasses the widely used 'pobedit' material in terms of hardness and fracture toughness. The new compound, WB5, can be synthesized at normal pressure and has potential applications in various fields including drilling and machine building.
Researchers create method to detect individual phonons, enabling study of phonon decay and its implications for quantum technologies. The technique uses ultra-short laser pulses to excite and probe phonons in diamond crystals.
Researchers from MIPT and TISNCM developed a new type of nuclear battery using nickel-63 that packs about 3,300 milliwatt-hours of energy per gram, exceeding previous records. The battery achieves a power density 10 times higher than commercial chemical cells, making it suitable for powering small devices.
A recent study from UNIST has unveiled a new method for growing elastic diamonds, which can bend and stretch up to 9% without breaking. This breakthrough challenges previous theories that diamonds are brittle and opens possibilities for tuning their optical and optomechanical properties.
Harvard researchers engineered diamond strings that can quiet a qubit's environment and improve memory from tens to several hundred nanoseconds, enough time for many operations on a quantum chip. This breakthrough could serve as the backbone of a future quantum internet.
Scientists create new diamond etching process using solid-solution reaction of carbon into nickel at high temperature, enabling continuous diamond etching at a high rate. This technology avoids plasma damage and allows for selective etching of diamond in direct contact with nickel.
Scientists have discovered a way to exploit defects in nanoscale diamonds to enhance the sensitivity of magnetic resonance imaging (MRI) and nuclear magnetic resonance (NMR) systems. The technique could lead to low-cost alternatives to multimillion-dollar medical imaging and drug-discovery devices.
A new film, 'Voices from the Mine', sheds light on the human costs of artisanal diamond mining in Sierra Leone, where miners face poverty and hardship despite the industry's $250 million annual value. The film highlights the need for a more nuanced understanding of the diamond trade, particularly among consumers and policy makers.
Researchers from ITMO University developed a controlled light source based on nanodiamond, doubling emission speed without additional nanostructures. The artificial defects in the diamond crystal lattice enable efficient control of light emission, crucial for quantum computers and optical networks.
Scientists have successfully engineered defects in diamonds to store and transfer quantum information, a crucial step towards quantum computing. The technique uses vibrations from a mechanical resonator to stabilize optical properties, enabling the manipulation of electron orbitals.
Researchers have discovered that diamond can bend and stretch by up to 9 percent without breaking when grown in extremely tiny needle-like shapes. This finding could lead to the development of diamond-based devices for various applications, including biocompatible imaging and drug delivery.
Researchers have discovered a way to make diamonds flexible by etching tiny needles from artificial diamond films, achieving strains up to 9% and surpassing theoretical limits. The development holds implications for bioimaging, biosensing, and ultra-strength nanostructures, as well as optomechanical devices.
Research by NTU's Professor Subra Suresh and his team reveals diamond nano-needles can be stretched up to 9% without breaking, opening new avenues for applications in bioimaging, biosensing, drug delivery, data storage, and ultra-strength nanostructures.
Researchers developed a hydrogenated diamond circuit operational at 300 degrees Celsius, outperforming silicon-based devices in terms of efficiency and temperature resistance. The discovery has potential to improve energy savings and enable the construction of smaller, lighter electronic devices.
A new technique uses engineered diamond crystals to increase the strength of magnetic field produced by molecules, increasing their signal when measured by MRI. This could enhance imaging sensitivity for patient diagnosis and personalized medicine.
Researchers used the Advanced Photon Source to identify naturally occurring water at 410 kilometers below the Earth's surface, in the form of Ice-VII, a cubic crystalline form of water. This discovery could change our understanding of how water circulates deep in the Earth's mantle and how heat escapes.
Researchers at Imperial College London have developed a new maser that operates continuously at room temperature, leveraging synthetic diamond to achieve this feat. The discovery has significant implications for various fields, including medical imaging, airport security scanning, and deep space communication.
Japanese researchers have optimized laboratory-grown diamond structures to detect magnetic fields, enabling new biosensing applications. The design uses nitrogen-vacancy centers with stable negative charge states, reducing noise and increasing detection accuracy.
Researchers discovered crystallized water trapped in diamonds formed at extreme depths, challenging previous assumptions about diamond origins. The study suggests water may exist in the lower mantle, potentially affecting ocean water recycling and Earth's internal dynamics.
Australian researchers at RMIT University have successfully coated 3D printed titanium implants with diamond, improving biocompatibility and reducing bacterial attachment. The breakthrough could lead to radical improvements in biomedical implants and orthopedic procedures.
Researchers found unique diamond impurities containing Ice-VII, a naturally occurring aqueous fluid from the deep mantle. This discovery provides evidence of water-rich regions deep below the Earth's crust and has significant implications for understanding the planet's inner workings.
Researchers have discovered a diamond containing the fourth most abundant mineral in Earth, calcuim silicate perovskite, at the surface. This finding suggests that oceanic crust is recycled into the lower mantle, with potential implications for our understanding of Earth's core.
Researchers discovered diamond formation from ankerite through spontaneous iron reduction, suggesting a possible mechanism for abundant diamond creation in Earth's lower mantle. The process occurs without melting at high pressures and temperatures, similar to those found in meteoritic impact zones.
Scientists have discovered a new method to trigger chemical reactions using tiny diamond anvils, which can break bonds and trigger electron transfers without heat or solvents. This breakthrough could lead to more precise and environmentally friendly chemistry.
Researchers have successfully fabricated nanocrystalline diamonds using plasma vapor deposition, enabling the creation of micro-anvils with pressures up to 500 gigapascals. The high-pressure capabilities of these nanocrystalline diamonds hold promise for studying materials under extreme conditions.
Researchers have demonstrated the potential for diamond as a material for spintronics, with strong spin-orbit coupling and tunable magnetic field control. Diamond's ease of processing and fabrication make it an attractive alternative to traditional semiconductor materials.
Researchers used UV laser photolysis to improve diamond synthesis by suppressing unwanted side products. The technique promotes faster and better-quality diamond growth, opening up new possibilities for material synthesis.
Researchers at CUNY's Advanced Science Research Center discovered a process to create a diamond-like material from two-layer graphene that becomes harder than diamond upon impact. This innovation has potential applications in wear-resistant protective coatings and ultra-light bullet-proof films.
Researchers developed a diamond-based detector that can measure the number of protons in a dose of radiation with almost perfect accuracy. The device allows for precise control of radiation doses for cancer treatment and research, enabling scientists to study cell responses to different doses of radiation.
Researchers add boron to gas mixture to create nanostructured diamond film with increased grain size, exhibiting diamond-like properties. The addition of boron also changes the film's electrical properties, offering new control for various applications.
A research team from MSU found that stretching diamond crystallites under an electric field causes changes in luminescence spectrum, making them suitable for use in quantum optic devices. The discovery could lead to the development of detectors for contact-free measuring of electric and magnetic fields with high spatial resolution
Researchers at Clemson University used a simple computer model to calculate the elastic properties of amorphous diamond, a new form of diamond with varying fractions of sp3-bonded carbon. The results show that this new substance retains desirable mechanical properties similar to crystalline diamond.
Scientists create dense ensembles of quantum spins in diamond with high resolution, enabling enhanced sensors and resources for quantum technologies. Nitrogen-Vacancy (NV) defects are used to measure magnetic fields and quantum computing, thanks to their unique properties such as long coherence times at room temperature.
CVDVale's technology enables the use of ultrasonic drills without anesthesia in 70% of cases, allowing for faster and less painful dental procedures. The company's innovative approach to synthetic diamond production has also expanded its applications to orthopedic surgeries.
A team of WSU researchers has observed and recorded the creation of hexagonal diamond in highly oriented pyrolytic graphite under shock compression. The discovery reveals crucial details about how hexagonal diamond is formed, potentially helping planetary scientists estimate impact severity at meteorite craters.
Researchers have created a proof of concept for MOSFETs using the deep depletion regime in bulk-boron-doped diamond, increasing hole channel carrier mobility by an order of magnitude. This enables more efficient power electronics and paves the way for fully exploiting diamond's potential in MOSFET applications.
Researchers at UTA and Wadia Institute of Himalayan Geology discovered the generation of H2, O2, H2O, and CO2 in the Earth's mantle, shedding new light on planetary evolution. The study also found that deep mantle upwelling can oxidize fluids to produce water and carbon dioxide.
Researchers have developed a simple method to create more nitrogen-vacancy centers in diamonds, enhancing their sensing capabilities for magnetic fields. This breakthrough could lead to more compact devices and improved sensitivity, enabling the creation of unique quantum states.