Diamond

Lab-grown diamond device might change how we measure radiation doses

Texas A&M opens world’s largest academic controlled-explosions lab

The new facility enables scientists to observe and measure detonation forces in unprecedented detail, shedding light on industrial safety risks and potential breakthroughs. Researchers aim to develop safer designs and protocols by examining detonation disasters like the Buncefield Fire.

Diamond owl swoops in with new method to keep electronics cool

Researchers at Rice University have developed a new method to grow patterned diamond surfaces that can decrease operating temperatures in electronics. This approach uses microwave plasma chemical vapor deposition to create ordered layers of diamond crystals on substrates, allowing for controlled seed placement and scalable growth.

When the softest carbon meets the hardest

Graphene and diamond hybrids show promising performance in electronic devices, sensors, and machining tests. However, major challenges remain, including producing large-area hybrids with consistent quality and understanding fundamental properties.

Hong Kong researchers break the single-field barrier with dual-field assisted diamond cutting

Researchers at Hong Kong Polytechnic University create a new machining method that combines laser and magnetic fields to machine advanced materials like high-entropy alloys. The dual-field approach produces smoother surfaces, reduced damage, and improved material removal rates.

Surprising nanoscopic heat traps found in diamonds

Researchers discovered 'hot spots' around atomic defects in diamonds that briefly distort the surrounding crystal, affecting quantum-relevant defects. The findings indicate optical techniques used to control defects may unintentionally generate small pockets of heat, potentially affecting diamond-based quantum devices.

Rice engineers show lab grown diamond films can stop costly mineral buildup in pipes

Researchers at Rice University have developed lab-grown diamond coatings that can naturally resist scale formation without constant intervention. The nitrogen-terminated diamond surface accumulated significantly less scale than other surfaces, making it a promising anti-scaling material for water desalination and energy systems.

Successful measurement of ultrafast electric fields: development of a diamond nonlinear probe

Scientists have successfully measured ultrafast electric fields using a diamond nonlinear probe, achieving femtosecond temporal and nanometer spatial resolution. This breakthrough enables the detection of local electric field dynamics near surfaces with unprecedented precision.

Making diamonds with electron radiation

A team at University of Tokyo successfully created nanodiamonds using electron radiation on adamantane molecules. This method offers new techniques for imaging and analysis, and could lead to breakthroughs in fields like quantum computing and sensors.

The diamonds that could find cancer

Researchers at the University of Warwick have developed a handheld diamond magnetometer for cancer surgery, which uses magnetic tracer fluid to detect tumours. The device is ultra-sensitive and compact, offering a non-toxic alternative to traditional methods, such as radioactive tracers or blue dye.

Mirror-like graphite films break records in strength and conductivity

Researchers have developed a method to produce mirror-like graphite films with millimeter-sized grains, exceeding previous synthetic graphite's performance. The films demonstrate exceptional mechanical properties, thermal conductivity, and electrical conductivity, opening up new possibilities for high-tech applications.

Coherence enhancement via diamond-graphene hybrid for nanoscale quantum sensing

Researchers achieved a 2-fold enhancement in NV center coherence time by graphene-diamond hybridization, clarifying the physical mechanism and providing a novel approach to improve nanoscale quantum sensors. This technique leverages mature graphene transfer processes to reduce noise from diamond surfaces.

Rice method refines ultrapure diamond film fabrication for quantum and electronic applications

Researchers at Rice University have developed a new method to fabricate ultrapure diamond films for quantum and electronic applications. By growing an extra layer of diamond on top of the substrate after ion implantation, they can bypass high-temperature annealing and generate higher-purity films.

Crystallizing time

Physicists at Washington University in St. Louis have created a novel phase of matter called a time quasicrystal, which vibrates at precise frequencies over time. The researchers built the quasicrystals inside a diamond chunk using powerful nitrogen beams and microwave pulses.

For better quantum sensing, go with the flow

Researchers have developed a new technique for quantum sensing using nanodiamonds in microdroplets, which can detect trace amounts of certain ions and molecules. This method uses flowing droplets and carefully modulated microwaves to ignore unwanted background noise and add precision.

Breakthrough in high-sensitivity quantum sensors with diamond heteroepitaxy

Researchers developed heteroepitaxial diamond quantum sensors with high sensitivity and accuracy for monitoring electric vehicle battery systems. The breakthrough could pave the way for widespread adoption in industries related to sustainable development.

Helium in the Earth's core

A new study by researchers from the University of Tokyo reveals that helium can bond with iron under extreme conditions, contradicting previous findings. The discovery suggests there could be significant amounts of helium in the Earth's core, potentially rewriting our understanding of the planet's origins.

Atomic-level diamond surface polishing with high quality, efficiency, and material removal rates

A new photocatalytic chemical mechanical polishing (PCMP) slurry has been developed for Single Crystal Diamond (SCD) polishing, resulting in exceptionally smooth surfaces with minimal damage. The Material Removal Rate (MRR) peaks at 1168 nm·h−1, emphasizing the efficiency and effectiveness of this advanced polishing technique.

Sliding into novel materials: A new frontier in material science

Researchers at Tel Aviv University have developed a method to transform graphite into novel materials with controlled atomic layers, enabling the creation of tiny electronic memory units. This process, known as 'Slidetronics,' allows for precise manipulation of material properties, opening doors to innovative applications in electronic...

Diamond continues to shine: new properties discovered in diamond semiconductors

Boron-doped diamonds exhibit plasmons, allowing electric fields to be controlled on a nanometer scale, for advanced biosensors and nanoscale optical devices. This discovery could pave the way for new types of biomedical and quantum optical devices.

PPPL leading two CHIPS and Science Act projects

PPPL researchers will lead two collaborative projects involving national labs, academic, and industry partners to advance microelectronics and sensors. The projects aim to create a science-based plasma-processing toolbox for next-generation semiconductor device manufacturing processes.

High-quality nanodiamonds for bioimaging and quantum sensing applications

Researchers from Okayama University create nanodiamonds with nitrogen-vacancy centers, exhibiting strong fluorescence and stable spin states for biological applications. The developed nanodiamonds have improved spin quality compared to bulk diamonds, making them suitable for bioimaging and quantum sensing.

Ensuring a bright future for diamond electronics and sensors

Scientists at DOE's Princeton Plasma Physics Laboratory perfect processes for growing diamond at lower temperatures without sacrificing quality. The breakthrough could enable the implementation of diamond in silicon-based manufacturing, opening a door for advanced electronics and sensors.

Major development successes in diamond spin photon quantum computers

The SPINNING project successfully demonstrated the entanglement of two registers of six qubits each over 20m distance with high fidelity. The spin-photon-based quantum computer achieved lower error rates than superconducting Josephson junctions, outperforming prominent models like Eagle and Heron.

New diamond bonding technique a breakthrough for quantum devices

A novel diamond bonding technique allows for the direct integration of synthetic diamonds with materials used in quantum and conventional electronics, overcoming a major hurdle in their use. The technique enables the creation of thin diamond membranes suitable for advanced quantum applications.

First successful demonstration of a dual-media NV diamond laser system

The researchers combined an NV diamond with a laser diode in an optical resonator, successfully demonstrating the sensor system with two active media. This breakthrough enables high-contrast sensors to measure biomagnetic signals from the brain or heart with improved sensitivity and dynamic range.

Discovering quasiparticles ejected from color centers in diamond crystals

Scientists have created extremely thin sheets of nitrogen-vacancy (NV) centers in diamond crystals, which exhibit exceptional sensitivity to environmental variations. The findings reveal the emergence of Fröhlich polarons, previously thought not to exist in diamonds, opening up new prospects for quantum sensing.

Unlocking the secrets of diamond: new insights into nitrogen-vacancy center formation

Researchers have demonstrated a novel method to increase the density and depth of nitrogen-vacancy centers in type-Ib diamonds through controlled temperature and orientation. This study advances our understanding of diamond materials and opens up new possibilities for cutting-edge scientific and technological applications.

Purdue physicists throw world’s smallest disco party

Physicists at Purdue University have achieved a groundbreaking milestone in levitated optomechanics by observing the Berry phase of electron spins in nano-sized diamonds. By levitating and spinning these tiny diamonds at incredibly high speeds, they were able to study the effects of fast rotation on spin qubits.

Tiny quantum sensor to make a big impact

Researchers developed a new 2D quantum sensing chip using hexagonal boron nitride that can simultaneously detect temperature anomalies and magnetic fields in any direction. The chip is significantly thinner than current quantum technology for magnetometry, enabling cheaper and more versatile sensors.

Novel diamond quantum magnetometer for ambient condition magnetoencephalography

Researchers have developed a highly sensitive diamond quantum magnetometer that can achieve practical ambient condition magnetoencephalography. The novel magnetometer uses a single crystalline diamond to detect magnetic fields, achieving record sensitivities of up to 9.4 pT Hz-1/2 in the frequency range of 5 to 100 Hz.

A simple internet with significant possibilities

Researchers at Harvard University have successfully demonstrated the first metro-area quantum computer network in Boston, using existing telecommunication fiber to send hacker-proof information via photons. The breakthrough overcomes signal loss issues, enabling the creation of a secure quantum internet.

Lead-vacancy centers in diamond as building blocks for large-scale quantum networks

A team of researchers created a single negatively charged lead-vacancy center in diamond, which emits photons with specific frequencies not influenced by the crystal's vibrational energy. This characteristic makes the PbV center a promising building block for large-scale quantum networks.

Making diamonds at ambient pressure

Researchers create diamond film at 1 atm pressure and 1025°C using a novel liquid metal alloy, breaking the high-pressure requirement. The synthesized diamond has a high purity and unique silicon-vacancy color centers, opening new avenues for applications in magnetic sensing and quantum computing.

Under pressure

Scientists have created a novel instrument that enables the precise measurement of superconductors under extreme pressure, overcoming existing limitations. The new tool uses quantum sensors integrated into a standard pressure-inducing device, allowing for direct imaging of the material's behavior.

Diamonds are a chip's best friend

Researchers at Kyoto University have determined the magnitude of spin-orbit interaction in acceptor-bound excitons in a semiconductor. The study revealed two triplets separated by a spin-orbit splitting of 14.3 meV, supporting the hypothesis that two positively charged holes are more strongly bound than an electron-and-hole pair.

Technique could improve the sensitivity of quantum sensing devices

A new technique enables researchers to identify and control a greater number of atomic-scale defects in diamonds, which can be used to build larger systems of qubits for improved quantum sensing. This approach uses a specific protocol of microwave pulses to locate and extend control to additional defects.

Pioneering diamond manufacturing: Enhancing efficiency and precision with energy beam-based direct and assisted polishing techniques

Energy beam-based direct and assisted polishing technologies for diamonds improve surface quality and material removal rates, overcoming limitations of traditional methods. Researchers analyzed four latest polishing techniques, including laser polishing, ion beam polishing, plasma-assisted polishing, and laser-assisted polishing.

Are diamonds GaN’s best friend? Revolutionizing transistor technology

Researchers at Osaka Metropolitan University fabricated GaN transistors using diamond substrates, achieving more than twice the heat dissipation of SiC-based transistors. This novel technology has the potential to revolutionize power and radio frequency electronics with improved thermal management capabilities.

A promising pairing: Scientists demonstrate new combination of materials for quantum science

Researchers combined diamond and lithium niobate onto a single chip to achieve high efficiency in coupling the two materials. This pairing enables stable and reliable qubits, critical for quantum communication networks and applications.

Embedding nanodiamonds in polymer can advance quantum computing and biological studies

Embedding nanodiamonds in polymer can advance quantum computing and biological studies. The technique, developed at the University of São Paulo, enables integration of quantum emitters into photonic devices and cell marking applications.

Next generation semiconductors: Diamond device shows highest breakdown voltage

Researchers at the University of Illinois have developed a diamond semiconductor device with the highest breakdown voltage and lowest leakage current. The device operates at high voltages and currents without losing electrical performance, making it suitable for applications such as solar panels and wind turbines.

Ancient diamonds reveal new clues to Earth’s geological evolution

A University of Alberta study of superdeep diamonds provides previously unknown information about the formation and transport of diamonds within Gondwana, a ancient supercontinent. The research reveals that diamonds were transported to the base of Gondwana by host rocks carrying subducted mantle material.

Superdeep diamonds provide a window on supercontinent growth

Scientists have discovered that superdeep diamonds can provide a window into the growth and formation process of ancient supercontinents like Gondwana. By analyzing tiny inclusions within these diamonds, researchers were able to determine the age of the mantle rocks that helped buoy and grow the supercontinent from below.

Ancient diamonds shine light on the evolution of Earth

A team of experts analyzed ancient diamonds formed between 650 and 450 million years ago, providing new processes for how continents evolved and moved. The research sheds light on the supercontinent cycle and offers a direct window into Earth's deep workings.

Groundbreaking study shows defects spreading through diamond faster than the speed of sound

A groundbreaking study reveals that linear defects in diamond can spread at speeds exceeding the speed of sound, which could impact our understanding of material strength, failure, and manufacturing. This discovery may lead to new insights into earthquake ruptures, structural failures, and precision manufacturing.

Scientists film soundwaves in a crystal

Researchers used a unique X-ray technique to capture soundwaves' propagation in a diamond crystal, revealing ultrafast structural phenomena that were previously beyond scientific reach. The breakthrough enables real-time imaging of solid materials with unprecedented resolution and speed.

National Science Foundation research award will expand the shift+OPEN initiative from the MIT Press

The MIT Press is expanding its shift+OPEN initiative with a $275,000 NSF grant to flip two high-impact subscription-based journals to diamond OA. The program aims to accelerate STEM and HSS research by providing barrier-free access to scholarly works.

Diamond materials as solar-powered electrodes - spectroscopy shows what's important

Researchers have found that diamond materials can release electrons in water and trigger chemical reactions when excited by light. The team used X-ray spectroscopy to precisely track the processes taking place on the surface of diamond materials, revealing that they are well-suited for use in aqueous solutions.

Argyle study reveals crucial third clue to finding new diamond deposits

Researchers have identified three key ingredients needed to bring valuable pink diamonds to the surface: deep carbon, continental collision, and stretching of landmasses. This discovery could lead to finding new pink diamond deposits globally.

SLAC researchers take important step toward developing cavity-based X-ray laser tech

Researchers at SLAC National Accelerator Laboratory have developed a key process for next-gen X-ray lasers, demonstrating the use of synthetic diamond crystal mirrors to steer X-ray pulses around a rectangular racetrack. The achievement marks an important step towards creating brighter and more stable X-ray laser pulses.

Rice lab’s boron nitride composite could be useful for advanced technology applications

Researchers created a nanocomposite of hexagonal and cubic boron nitride, which exhibits unexpected thermal and optical properties. The composite's low thermal conductivity makes it suitable for heat-insulating electronic devices, while its second-harmonic generation property is larger than expected after heating.

Scientists crack the code of what causes diamonds to erupt

Researchers discovered that tectonic plate breakup is the main driving force behind diamond-rich magmas and eruptions from deep inside the Earth. The team's findings could shape the future of diamond exploration, informing where diamonds are most likely to be found.

Sensing and controlling microscopic spin density in materials

A team of researchers has found a way to control the spin density in diamond by applying an external laser or microwave beam. This technique could enable the development of more sensitive quantum sensors and improve the sensitivity of existing nanoscale quantum-sensing devices.

A novel laser slicing technique for diamond semiconductors

Researchers from Chiba University developed a novel laser-based technique to slice diamonds into thin wafers, paving the way for their adoption as next-generation semiconductor materials. The technique uses short laser pulses to transform diamond into amorphous carbon, reducing density and crack formation.

HKU Engineering team uses diamond microparticles to create high security anti-counterfeit labels

A team of researchers developed a pioneering technological solution using diamond-based anti-counterfeiting labels with unique Physically Unclonable Functions. The labels can be scanned using a phone, making them highly suitable for commercial products, and are extremely tough and cheap to produce.

Move over diamond. hBN is quantum’s new best friend.

Researchers have developed a method to stabilize the –1 state of boron vacancy defects in hBN, enabling it to replace diamond as a material for quantum sensing and quantum information processing. The team discovered unique properties of hBN and characterized its material, opening up new avenues for study.

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.

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.