Squeezing data from a diamond sandwich
Researchers have developed software to remove signal interference from neutron experiments under megabar pressures. This enables the accurate extraction of data on extraordinary atomic structures of materials.
Diamond
Articles tagged with Diamond
Efficient heat dissipation perovskite lasers using a high-thermal-conductivity diamond substrate
Researchers developed a perovskite nanoplatelet laser on a diamond substrate, achieving efficient heat dissipation and low pump-density-dependent temperature sensitivity. The study demonstrates potential for electrically driven perovskite lasers.
Understanding the mechanism of non-uniform formation of diamond film on tools
A research team reveals the mechanism behind non-uniform diamond film formation on tools, identifying carbon filaments as a key factor. Inhibiting carbon filament growth is crucial for developing dry processing methods that reduce environmental waste.
SourceToyohashi University of Technology (TUT)·JournalDiamond and Related Materials·TypeExperimental study·DateMar 22, 2023
Numerical simulation of materials-oriented ultra-precision diamond cutting: Review and outlook
Researchers review numerical simulations for ultra-precision diamond cutting, exploring properties and microstructures of workpiece materials and their impact on the cutting process. The study provides guidelines for numerical simulations to predict machining responses for various materials.
SourceInternational Journal of Extreme Manufacturing·JournalInternational Journal of Extreme Manufacturing·DateMar 17, 2023
USTC realizes quantum-enhanced microwave ranging
Researchers from USTC developed a novel method combining micro/nano resolution with deep sub-wavelength localization to achieve quantum-enhanced position measurement accuracy of 10^-4 wavelengths. This breakthrough technology enables high-precision microwave positioning, surpassing traditional radar systems.
SourceUniversity of Science and Technology of China·JournalNature Communications·TypeExperimental study·DateMar 9, 2023
Colloids get creative to pave the way for next generation photonics
Researchers at the University of Birmingham have devised a way to fabricate a complex structure, previously found only in nature, to control light in the visible range. This new approach uses self-assembled colloidal particles to create chiral photonic crystals with tailored optical properties.
SourceUniversity of Birmingham·JournalAdvanced Materials·TypeComputational simulation/modeling·DateMar 9, 2023
Breakthrough in tin-vacancy centers for quantum network applications
Researchers at Tokyo Institute of Technology have successfully created Sn-V centers with identical photon frequency and linewidth, marking a new phase in their use as quantum nodes. The breakthrough enables the formation of stable Sn-V centers suitable for creating remote entangled quantum states.
SourceTokyo Institute of Technology·JournalPhysical Review Applied·TypeExperimental study·DateFeb 24, 2023
Discovery of new form of carbon, called long-range ordered porous carbon (LOPC)
Researchers have discovered a new form of carbon, LOPC, which consists of 'broken C60 cages' connected by long-range periodicity. The formation of LOPC occurs under specific temperature and carbon/Li3N ratio conditions, and its characterization reveals unique electrical conductivity properties.
Exotic water ice contributes to understanding of magnetic anomalies on Neptune and Uranus
Researchers used density functional theory to investigate the mechanical properties of superionic ice XVIII, which is thought to make up a large part of Neptune and Uranus. The study found that dislocations in the crystal lattice produce shear, leading to macroscopic deformations and potentially influencing the planets' magnetic fields.
SourceFundação de Amparo à Pesquisa do Estado de São Paulo·JournalProceedings of the National Academy of Sciences·DateJan 20, 2023
New technique reveals changing shapes of magnetic noise in space and time
Researchers at Princeton University have developed a new technique to measure the spatial structure and time-varying nature of magnetic noise. This breakthrough opens up new possibilities for understanding quantum spin liquids, materials with bizarre quantum behaviors that were previously difficult to analyze experimentally.
SourcePrinceton University, Engineering School·JournalScience·TypeExperimental study·DateDec 23, 2022
Solving the puzzle: Cubic silicon carbide wafers demonstrate high thermal conductivity, second only to diamond
Researchers at the University of Illinois have solved a long-standing puzzle about cubic silicon carbide's thermal conductivity, which is higher than previously thought. The team measured an isotropic high thermal conductivity of over 500 W m–1 K–1, ranking it second only to diamond.
SourceUniversity of Illinois Grainger College of Engineering·JournalNature Communications·DateDec 8, 2022
Nanodiamonds can be activated as photocatalysts with sunlight
Researchers have discovered that nanodiamonds can emit solvated electrons in water when exposed to visible light, a crucial step towards using them as photocatalysts. This discovery could lead to the development of inexpensive and metal-free processes for converting CO2 into valuable hydrocarbons or converting N2 into ammonia.
SourceHelmholtz-Zentrum Berlin für Materialien und Energie·JournalNanoscale·TypeExperimental study·DateNov 30, 2022
Using quantum sensor technology to improve brain tumor operations
The DiaQNOS project aims to develop quantum sensors for improved brain tumor surgery. Magnetic field sensors will refine neuronavigation, enabling more precise incision paths. Researchers from Mainz University and partners will create a device suitable for use in surgery.
Photocatalysis: Processes in charge separation recorded experimentally
Scientists have recorded photocatalysis charge separation processes experimentally on Cu2O particles, revealing rapid electron transfer and slower hole trapping, enabling better understanding of photocatalytic water splitting limitations. The technique allows for spatiotemporal imaging of charge transfer in photocatalyst particles.
SourceHelmholtz-Zentrum Berlin für Materialien und Energie·JournalNature·TypeExperimental study·DateNov 8, 2022
New insights into nanochannel fabrication using femtosecond laser pulses
Researchers developed a novel method to create deep nanochannels in hard and brittle materials like silica, diamond, and sapphire. By employing femtosecond laser direct writing technology, they achieved sub-100-nm feature sizes and ultrahigh aspect ratios.
SourceSPIE--International Society for Optics and Photonics·JournalAdvanced Photonics Nexus·DateNov 2, 2022
An ocean inside the Earth? Water hundreds of kilometers down
A team of researchers led by Goethe University Frankfurt analyzed a diamond from Botswana, revealing significant amounts of water stored in the transition zone. The discovery has far-reaching consequences for the dynamic situation inside the Earth, potentially altering global material circulation.
Mysterious diamonds came from outer space, scientists say
Researchers discovered lonsdaleite in ancient dwarf planet meteorites, confirming its existence and potential industrial applications. The unusual structure of lonsdaleite could help inform new manufacturing techniques for ultra-hard materials.
SourceRMIT University·JournalProceedings of the National Academy of Sciences·TypeObservational study·DateSep 12, 2022
High-accuracy electric vehicle battery monitoring with diamond quantum sensors for driving range extension towards carbon neutrality
Researchers at Tokyo Institute of Technology developed diamond quantum sensors to accurately measure EV battery charge. The sensors can detect small changes in current with 1% accuracy, extending driving range by up to 10%. This breakthrough reduces CO2 emissions and supports carbon neutrality.
SourceTokyo Institute of Technology·JournalScientific Reports·TypeExperimental study·DateSep 6, 2022
‘Diamond rain’ on giant icy planets could be more common than previously thought
Researchers found that oxygen makes diamond formation more likely, allowing for a wider range of conditions and planets. This discovery could lead to new methods of fabricating nanodiamonds with various applications.
SourceDOE/SLAC National Accelerator Laboratory·JournalScience Advances·TypeExperimental study·DateSep 2, 2022
Making nanodiamonds out of bottle plastic
Researchers at Helmholtz-Zentrum Dresden-Rossendorf have successfully created nanodiamonds out of PET plastic using powerful laser flashes. This breakthrough method opens up new possibilities for producing these minuscule diamonds, which are needed for highly-sensitive quantum sensors and medical contrast agents.
SourceHelmholtz-Zentrum Dresden-Rossendorf·JournalScience Advances·TypeExperimental study·DateSep 2, 2022
Diamonds and rust at the Earth's core-mantle boundary
Researchers found that under the extreme conditions of the core-mantle boundary, carbon from the core reacts with iron alloy to form diamond. This process may have occurred for billions of years, supplying enough carbon to explain high amounts in the mantle.
SourceArizona State University·JournalGeophysical Research Letters·TypeObservational study·DateAug 30, 2022
Measuring currents in the heart at millimeter resolution with a diamond quantum sensor
A team of scientists has developed a novel setup for magnetocardiography using a diamond quantum sensor to measure heart currents at millimeter resolution. The sensor is based on nitrogen vacancies sensitive to weak magnetic fields produced by heart currents and can operate at room temperature.
SourceTokyo Institute of Technology·JournalCommunications Physics·TypeExperimental study·DateAug 23, 2022
New Geology articles published online ahead of print in May
Researchers investigate protogenetic clinopyroxene inclusions for diamond dating and find implications for understanding Earth's mantle processes. They also study Andean deformation and its relation to flat slab subduction and tectonic inheritance.
What can deep diamonds tell us about deep earthquakes?
Studies of deep diamonds provide evidence of fluids carried by subducted slabs, suggesting that fluids can no longer be ignored in the story of deep earthquake generation. The diamonds' distinctive chemistry and inclusions indicate a connection to organic material and serpentinized mantle peridotite.
Growing extremely tiny, uniformly sized diamonds — without explosives
Researchers have created ultra-uniform nanodiamonds using a new chemical process that mimics the conditions found in natural diamond formation. The tiny crystals are crucial for drug delivery, sensors, and quantum computer processors. With this breakthrough, scientists can now control single atoms within larger structures.
UNLV researchers discover new form of ice
Researchers at UNLV's Nevada Extreme Conditions Lab have discovered a new form of ice with unique properties. The team found that the transition to Ice-X occurs at much lower pressures than previously thought.
SourceUniversity of Nevada, Las Vegas·JournalPhysical Review B·TypeObservational study·DateMar 18, 2022
Discovered: An easier way to create "flexible diamonds"
A team of scientists led by Samuel Dunning has developed an original technique to predict and guide the ordered creation of strong, yet flexible, diamond nanothreads. The innovation allows for easier synthesis of the material, which has potential applications in space elevators, ultra-strong fabrics, and other fields.
SourceCarnegie Institution for Science·JournalJournal of the American Chemical Society·TypeExperimental study·DateMar 2, 2022
Development of a diamond transistor with high hole mobility
Researchers at NIMS have created a diamond field-effect transistor (FET) with high hole mobility, reducing conduction loss and increasing operational speed. The FET's normally-off behavior also makes it safer for electronic devices.
SourceNational Institute for Materials Science, Japan·JournalNature Electronics·TypeExperimental study·DateFeb 24, 2022
Growing the perfect diamond: Simulations reveal interesting geometric patterns
Scientists have simulated the growth of ultra-thin polycrystalline diamond films with promising results. The two-dimensional simulations revealed interesting geometric structures and shed light on how to create robust materials. The research has implications for biomedical science, quantum devices, and other applications.
SourceOkinawa Institute of Science and Technology (OIST) Graduate University·JournalActa Materialia·TypeComputational simulation/modeling·DateFeb 14, 2022
How Mars lost its oceans
Researchers recreated conditions expected in Mars' core billions of years ago and found that molten metal gave rise to a brief magnetic field. This led to the evaporation of water vapor and eventual loss of Martian oceans about 4 billion years ago.
Using nanodiamonds as sensors just got easier
University of Rochester researchers adapt excited state lifetime thermometry to extract temperatures of nanoscale materials from light emitted by nitrogen vacancy centers in single nanodiamonds. The technique allows for precise measurement of temperature changes on fast time scales and is safe for imaging sensitive nanoscale materials ...
SourceUniversity of Rochester·JournalApplied Physics Letters·TypeExperimental study·DateJan 26, 2022
Diamond quantum sensor detects “magnetic flow” excited by heat
A team of researchers from Japan Advanced Institute of Science and Technology successfully detects thermally excited magnons in a yttrium iron garnet sample using a diamond-based quantum sensor. This breakthrough enables the detection of thermal magnon currents, opening doors to heat-controlled quantum devices.
SourceJapan Advanced Institute of Science and Technology·JournalPhysical Review Applied·DateJan 26, 2022
Solving a crystal's structure when you've only got powder
Researchers develop small-molecule serial femtosecond crystallography, enabling precise analysis of complex materials. The technique reveals accurate atomic structures of previously unsolvable compounds.
Towards superior nanoscale sensing and imaging with optimized diamond probes
Researchers at Japan Advanced Institute of Science and Technology have developed a novel method to fabricate diamond probes with controlled shape and higher sensitivity. These probes enabled the imaging of periodic magnetic domain structures in ferromagnets, showing promise for quantum applications.
SourceJapan Advanced Institute of Science and Technology·JournalJournal of Applied Physics·DateJan 13, 2022
Sensor based on quantum physics could detect SARS-CoV-2 virus
A novel quantum-based sensor has been developed to detect the SARS-CoV-2 virus with high accuracy and speed. The sensor uses nitrogen vacancy centers in diamond to detect minute perturbations in the presence of viral RNA, enabling fast and reliable detection.
Can diamonds originate methane?
Researchers successfully reproduced the formation of methane from diamonds under high-pressure conditions, shedding light on the deep Earth's carbon cycle. This finding suggests that hydrocarbons like methane can be created without biological activities, which has significant implications for our understanding of the planet's climate.
New ultrahard diamond glass synthesized
Researchers have synthesized a new form of carbon glass with three-dimensional bonds, the hardest known glass material. The discovery has potential for mass production and opens up new possibilities in devices and electronics.
PKU researchers observes localized phonon modes at a heterointerface
Researchers from Peking University developed a new technique using 4D-EELS to measure phonon modes at heterointerfaces, directly observing localized phonon modes for the first time. This breakthrough enables better understanding and control of solid interfaces' properties.
Research in Brief: First-ever interior Earth mineral discovered in nature
Researchers from UNLV have discovered a new mineral, davemaoite, which originated between 410-560 miles deep within the Earth's lower mantle. The calcium silicate compound was trapped in a diamond and preserved due to its incredible strength, making it possible for scientists to study its structure.
Researchers compare energy consumption during extraction and synthesis of one diamond carat
The study compared traditional mining and innovative synthesis methods for producing a single carat diamond, revealing that energy consumption varies widely between the two. While some synthetic methods are more efficient than mining, others consume significantly more energy.
Diamonds are forever: Scientists develop microscopic calibration tool with fluorescent nanodiamonds
Researchers at the University of Illinois created a novel device using microscopic fluorescent diamonds to calibrate sensitive microscopy systems. The nanodiamonds' stability and longevity make them ideal as a 'first-aid kit' for microscopes, allowing for easy reuse and quality control.
SourceBeckman Institute for Advanced Science and Technology·JournalPhotonics Research·TypeImaging analysis·DateNov 5, 2021
How flawed diamonds 'lead' to flawless quantum networks
Researchers from Tokyo Institute of Technology demonstrate that lead-vacancy centers in diamond exhibit dihedral symmetry and large ground state splitting, essential properties for quantum networks. The high-pressure high-temperature treatment recovers damaged crystal lattice, leading to long spin coherence time at higher temperatures.
GaN-on-diamond semiconductor material that can take the heat - 1,000℃ to be exact
Researchers have successfully bonded gallium nitride and diamond without intermediate layers using surface-activated bonding. The resulting GaN-on-diamond material demonstrates stability even at extreme temperatures of up to 1,000℃, enabling the development of highly conductive semiconductors for high-power devices.
New substance classes for nanomaterials: Nano spheres and diamond slivers made of silicon and germanium
Researchers at Goethe University Frankfurt and Bonn have synthesized molecular nano spheres made of silicon atoms, known as silafulleranes, which can encapsulate chloride ions. The discovery of these new compounds may lead to improved applications in electronics, solar cells, and batteries.
SourceGoethe University Frankfurt·JournalJournal of the American Chemical Society·TypeExperimental study·DateSep 8, 2021
A solid favor for researchers: A new way to investigate the electric double layer effect
Scientists at Tokyo University of Science develop a new methodology to investigate the elusive electric double layer (EDL) effect in all-solid-state batteries. The study reveals that the EDL effect is dominated by the electrolyte's composition and can be suppressed through charge compensation, leading to improved performance.
SourceTokyo University of Science·JournalCommunications Chemistry·TypeExperimental study·DateAug 26, 2021
Dancing with the light: A new way to make crystals bend by shining light
Researchers at Waseda University have developed a novel mechanism for inducing high-speed bending in thick crystals using the photothermal effect, enabling rapid actuation and simulation. This breakthrough has significant implications for flexible robotics, actuators, and soft robotics.
SourceWaseda University·JournalJournal of the American Chemical Society·TypeExperimental study·DateJul 28, 2021
Seeing with radio waves
Scientists from the University of Tsukuba used radio-frequency imaging to detect nitrogen-vacancy defects in diamond with improved resolution. The technique, called spin-locking, enhances accuracy and sensitivity by shielding electron spin from random noise.
Ancient diamonds show Earth was primed for life's explosion at least 2.7 billion years ago
Researchers found ancient diamonds with gases similar to those in the modern mantle, indicating little change in atmospheric volatiles over the last 2.7 billion years. This suggests that essential volatile elements like carbon and nitrogen were present on Earth soon after its formation.
'Flashed' nanodiamonds are just a phase
Researchers develop method to control flash Joule heating process to produce valuable allotropes, including fluorinated nanodiamonds and graphene. The process uses organic fluorine compounds and fluoride precursors to create the desired structures.
What causes the deep Earth's most mysterious earthquakes?
A team of scientists has found that fluids play a key role in deep-focus earthquakes, which occur between 300 and 700 kilometers below the planet's surface. The research suggests that water carried down from oceanic plates was instrumental in creating these mysterious events.
New approach to growing cubic boron nitride: a pathway to next-gen semiconductors
A new method for growing bulk single-crystal nitrides has been developed by Lehigh University materials scientist Siddha Pimputkar, which could lead to more-efficient and less-costly electronic devices. The approach involves using lithium nitride as a precursor and a specialized pressure cooker to overcome the challenges of growing lar...
Diamonds engage both optical microscopy and MRI for better imaging
Researchers have developed microdiamond tracers that can provide information via both MRI and optical fluorescence simultaneously, allowing high-quality images up to a centimeter below the surface of tissue. This technique enables faster imaging and overcomes the limitation of light microscopy in probing deeper tissues.
SourceUniversity of California - Berkeley·JournalProceedings of the National Academy of Sciences·DateMay 17, 2021
Future sparkles for diamond-based quantum technology
Two research breakthroughs accelerate the development of synthetic diamond-based quantum technology by addressing cost and fabrication difficulties. A new hard masking method enables precise engineering of optical defects in diamond devices, while a novel growth process uses lower-cost polycrystalline substrate.
Hidden within African diamonds, a billion-plus years of deep-earth history
Researchers have discovered a way to date fluid-bearing diamonds, revealing three distinct periods of diamond formation spanning over 2 billion years. The study provides insights into the evolution of the deep earth and continents, with potential implications for our understanding of planetary history.
University of Tartu scientists develop materials for future fusion reactor
Researchers aim to create diamond windows that can withstand high levels of radiation, a crucial step towards building safer fusion reactors. The University of Tartu's three-year project involves partnerships with German and Latvian institutions to develop materials and technologies necessary for the DEMO reactor.
Lab-made hexagonal diamonds stiffer than natural diamonds
Researchers at Washington State University have created hexagonal diamonds using sound waves, finding them stiffer than natural cubic diamonds. The discovery could lead to the development of superior materials for machining and drilling, potentially replacing traditional diamond in these industries.
Deep diamonds contain evidence of deep-Earth recycling processes
Deeply subducted serpentinite rocks are found to carry surface water as far as 700 kilometers into the mantle, allowing scientists to trace material exchange. The presence of these rocks confirms a long-suspected pathway for deep-Earth recycling.
Reading between the diamonds
Researchers used lab tools to mimic extreme conditions, redefining the conditions under which carbonates can exist in the Earth's lower mantle. The study expands our understanding of the deep carbon cycle and the Earth's evolution.
Diamond color centers for nonlinear photonics
A team of researchers at the University of Tsukuba demonstrated second-order nonlinear optical effects in diamonds using internal color center defects. This breakthrough may lead to faster internet communications, all-optical computers, and quantum sensing technologies.
Combined technique using diamond probes for nanoscale imaging of magnetic vortex structure
Physicists at Johannes Gutenberg University Mainz have combined two quantum sensing techniques to analyze a sample, enabling the mapping of magnetic fields and magnetization. The technique uses diamond color centers in diamond probes to provide a sensitivity that opens up new measurement options.