Articles tagged with Low Temperature Physics
A team of researchers used resonant inelastic X-ray scattering to study the behavior of electron spins in iron selenide, a material that exhibits directionally-dependent electronic behavior. They found that high-energy spin excitations are dispersive and undamped, indicating a well-defined energy-versus-momentum relationship.
Researchers use computational detective work to verify the existence of a 3D quantum spin liquid in cerium zirconium pyrochlore, overcoming decades-long challenge. The material exhibits fractionalized spin excitations, where electrons do not arrange their spins in relation to neighbors.
The study reveals that superconductors can transmit spin currents between magnets, allowing for controlled magnetic interactions and modifying the magnetic response. This breakthrough enables new approaches to information processing using magnetic materials at low temperatures.
Physicist Guido Pagano has won a prestigious CAREER award from the National Science Foundation (NSF) to study quantum entanglement and develop new error-correcting tools for quantum computation. He aims to understand how measurement affects entangled systems and create tools to correct errors caused by quantum decoherence.
China's space transportation systems have made significant leaps in recent decades, with advancements in launch vehicles, propulsion systems, and artificial intelligence. The country aims to become a powerful space nation by the mid-21st century, with plans for manned missions to the Moon and Mars.
Researchers led by Associate Professor Yuki Fuseya found concrete evidence of Turing patterns at the nanoscale in a bismuth monolayer, resembling stripes on tropical fish. The study paves the way for new research directions in nanoscale physics and could lead to techniques for producing nanoscale devices with self-healing properties.
Scientists have developed a new method to read out superconducting circuits using light, enabling the engineering of large-scale quantum systems without requiring enormous cryogenic cooling power. This breakthrough overcomes scaling challenges and facilitates long-range transfer and networking between quantum systems.
A University of Arizona team proposes a solar-powered lunar ark to store cryogenically frozen seed, spore, sperm, and egg samples from 6.7 million Earth species in the event of a global crisis. The concept, inspired by Noah's Ark, aims to preserve biodiversity and prevent extinction.
Researchers at the University of Sydney and Microsoft have created a single chip that can generate control signals for thousands of qubits, revolutionizing quantum computing. This breakthrough resolves a key limitation to scaling up quantum machines, paving the way for more powerful computers.
Researchers developed low-cost, mass-producible metamaterial tiles to absorb environmental emissions and improve telescope sensitivity. The tiles enabled unprecedented sensitivity in measuring the cosmic microwave background, transforming our understanding of the universe's beginning and evolution.
Researchers developed theoretical models to predict clathrate hydrates outside Earth, revealing contrast in stable water forms on celestial bodies. Clathrate hydrates play a crucial role in preserving atmospheric volatile gases, storing them slowly over geological timescales.
Researchers have overcome a major limitation of stratospheric balloon payloads by creating an ultralight dewar that can cool large telescopes to near absolute zero. The breakthrough enables scientists to explore the cold universe and see faint signals from distant galaxies.
Researchers at NIST have developed a miniature thermometer that can measure temperatures below 1 Kelvin, enabling faster and more accurate measurements of chip-scale devices in quantum computing and other fields. The new thermometer is smaller, faster, and more convenient than conventional cryogenic thermometers.
A team of researchers used machine learning to study complex spin models, revealing key similarities between distinct phases. By training an AI on one model and applying it to another, they found that the algorithm could correctly classify phases and identify temperature transitions.
Valerii Vinokur, a senior scientist at Argonne National Laboratory, has made significant contributions to understanding topological properties of matter and their related phase transitions. His research has enabled the discovery of novel superinsulating states of matter in disordered superconducting films.
Scientists at Tokyo Tech achieve unprecedented precision in localizing biomolecules within intact cells using cryogenic fluorescence microscopy. The technique corrects the 'dipole orientation effect', a major limitation in fluorescence microscopy, resulting in nanometer-level accuracy.
Researchers at ETH Zurich have demonstrated a terahertz quantum cascade laser that operates without cryogenic cooling, reaching temperatures of up to 210 K. This breakthrough removes the main obstacles to widespread use in various applications, including non-invasive imaging and quality control.
Researchers have successfully created a graphene-based topological insulator, which enables the creation of low-dissipation ballistic electrical circuits. This breakthrough builds upon previous work and overcomes challenges related to spin-orbit coupling, a key component necessary for topological insulators.
Researchers used cryo-force spectroscopy to study DNA elasticity and binding forces at low temperatures. The study reveals that DNA behaves as a chain of small coil springs, with the spring constant determined for individual components.
Researchers discovered that levitated droplets can self-propel across a cryogenic liquid surface, gliding and oscillating without friction. The phenomenon is driven by an asymmetry between the front and back of the drop, emerging in the supporting film's thickness.
A high-performance material has been discovered, exhibiting exceptional mechanical properties at extremely low temperatures. The CoCrFeNi high-entropy alloy shows a high ultimate tensile strength of 1.26 GPa and elongation to failure of 62% at 4.2 K.
Researchers have created a new method for measuring the state of qubits, a crucial step towards building powerful quantum computers. This breakthrough could lead to significant advancements in fields like pharmaceutical development and cryptography.
Researchers at Johns Hopkins University have detected electrical dipole fluctuations in a quantum material at extremely low temperatures, revealing a new property of quantum matter. The study uses Raman spectroscopy to observe the irregular oscillations of tiny charged poles on the material.
Astronomers have discovered a new material that could directly detect dark matter particles, expanding the search scope to unexplored mass ranges. The material detects electrons recoiling from collisions with dark matter particles and operates near absolute zero.
The James Webb Space Telescope underwent critical cryogenic testing inside Chamber A at NASA's Johnson Space Center in Houston, ensuring it will safely reach its orbit and perform its science mission. The telescope was subjected to a range of tests, including alignment checks and simulations of starlight detection.
Scientists from Ural Federal University discovered a mathematical method to calculate the temperature of single-walled carbon nanotube superconductivity and developed a way to increase it. By adding a zigzag-like internal carbon chain, they increased the superconducting transition temperature by 45 degrees.
The telescope underwent a series of tests designed to ensure it functions as expected in an extremely cold environment, including alignment checks and cryogenic vacuum testing. After 15 years of planning and over 90 days of testing, the telescope's cryogenic test has been deemed an outstanding success.
Engineers aligned NASA's James Webb Space Telescope's 18 hexagonally shaped primary mirror segments using a multi-wavelength interferometer and seven actuators to achieve precise alignment. The ability to adjust the mirror segments' positions and shapes is critical for accurate focus on celestial targets.
A reliable clinical assay can detect the Zika virus from semen samples with a limit of detection of 5 viral copies per mL of semen. This assay has been validated through experiments with 100 semen samples spiked with recombinant Accuplex ZIKV and tested for other viruses.
Nagoya University researchers have created whisker-like crystals composed of tantalum, silicon, and tellurium, which produce high thermoelectric powers over a wide temperature range. The crystals' unique one-dimensional electronic structures enable low electrical resistivity and improved cooling performance.
Louis Taillefer, a Canadian quantum physicist and CIFAR's Director of Quantum Materials program, has made groundbreaking discoveries in experimental low-temperature physics. He was awarded the Simon Memorial Prize for his contributions to understanding quantum materials.
RIT students design and deploy telescope and camera to orient rocket payload based on star images, testing new CMOS detector technology operable at cryogenic temperatures. The Cryogenic Star Tracking Attitude Regulation System will launch in December on a suborbital sounding rocket.
The research team successfully cooled electrons to 3.7 millikelvin in a nanoelectronic device, breaking the previous record of 4 millikelvin. This breakthrough enables the development of new quantum technologies, including quantum computers and sensors, which require extremely low temperatures.
The James Webb Space Telescope's 'Pathfinder' telescope completed its second super-cold optical test, using specialized equipment to simulate star images and perform end-to-end testing. The successful test demonstrates the ability to optically test and align the telescope at planned operating temperatures.
The James Webb Space Telescope's Integrated Science Instrument Module has begun its final cryogenic test at NASA's Goddard Space Flight Center. The test, which will last several months, aims to ensure the instruments are ready for flight and can withstand the extreme temperatures they will encounter in space.
Herbert C. Freyhardt, a research professor at the University of Houston, received the International Cryogenic Materials Conference Lifetime Achievement Award for his work in developing type II superconducting materials and promoting the understanding of flux pinning effects.
Researchers have created a novel plasma diagnostics method by studying the pressure change at the inner walls of energy-saving light bulbs. The technique measures the force exerted on a solid surface by plasma, providing insights into processes that conventional probes can't detect.
Scientists have developed a new approach combining ptychographic X-ray imaging and fluorescence microscopy to study the role of trace elements in biological functions. This technique demonstrates unparalleled sensitivity for measuring trace element distribution in thicker specimens at cryogenic temperatures.
A team of physicists has successfully cooled highly-charged ions to sub-Kelvin temperatures, forming a Coulomb crystal that opens up new fields in laser spectroscopy. This breakthrough enables precision tests of quantum electrodynamics, measurement of nuclear properties, and laboratory astrophysics.
The new gear reducer uses magnetism to transform speed, eliminating wear and lubrication needs. It can work in cryogenic temperatures and has applications in outer space, robotics, and various industries where conventional reducers are used.
Researchers at CUORE collaboration achieve temperatures approaching absolute zero to study neutrinos, ghostlike particles crucial for matter's existence. The cooled chamber will house an ultra-sensitive detector for rare process called neutrinoless double-beta decay.
Researchers have created a high-entropy alloy that exhibits exceptional damage tolerance, tensile strength and fracture toughness values, even improving its properties at cryogenic temperatures. The alloy's unique nano-twinning phenomenon contributes to its remarkable mechanical behavior.
University of Adelaide researchers have created the world's most precise thermometer, using light to measure temperature differences of 30 billionths of a degree in just one second. This breakthrough technology has the potential to revolutionize industrial and medical applications where trace amount detection is crucial.
Scientists have made a breakthrough in understanding superconductors, proposing a single theoretical framework that could apply to various materials. The unified model suggests a common explanation for the phenomenon, which could lead to more efficient and cost-effective superconductor applications.
Researchers at NIST have demonstrated a solid-state refrigerator that uses quantum physics to cool larger objects to extremely low temperatures. The prototype enables the placement of any suitable object in the cooling zone and later removal and replacement, similar to an all-purpose kitchen refrigerator.
A University of Oregon team has developed a formula to refrigerate coal-plant emissions, reducing carbon dioxide by 90%, sulfur dioxide by 98%, mercury by 100% and other pollutants. The process would save society 38% through reduced health-care and climate-change costs.
Researchers have demonstrated a prototype device capable of absolute measurements of optical power delivered through an optical fiber, outperforming existing devices with improved temperature control and speed. The new radiometer can measure power levels as low as 10 nanowatts with high accuracy, paving the way for ultraprecise calibra...
NASA's WEBB Telescope has successfully completed cryogenic testing on its primary and secondary mirror segments, proving their ability to operate at extremely low temperatures. The testing, conducted at the X-ray and Cryogenic Facility, verified the mirrors' shape changes with temperature as expected, ensuring crisp focusing in space.
The Mid-Infrared Instrument (MIRI) has completed 2,000 individual tests at cryogenic temperatures, a milestone for the James Webb Space Telescope mission. Scientists will use MIRI to study young planets around distant stars and explore their habitability.
The James Webb Space Telescope has completed its first round of cryogenic mirror testing, with six segments of the primary mirror responding to extreme temperatures. A second set of mirrors will arrive in late July for further testing, with the final set arriving in the fall.
Physicists use iron oxychalcogenides to study Mott localization in undoped pnictide parent compounds, providing further evidence that these systems are on the verge of Mott localization. This proximity to Mott localization endows the system with strong quantum magnetic fluctuations.
Physicist Hans-Otto Meyer's experiment reveals unexpected behavior of cryogenic electron emission at extremely low temperatures. Electron emissions increase in bursts as the temperature decreases, challenging current understanding of physics.
The James Webb Space Telescope has successfully polished its first primary mirror segment to meet the required prescription at operational cryogenic temperatures. This achievement sets the stage for a successful polishing process for the remaining 18 flight mirror segments.
NASA is developing a primary mirror for the James Webb Space Telescope to study the formation of the universe and its solar system. The mirror will be tested at extreme temperatures to simulate space conditions, with data from three different sizes of segments collected during this test.
Researchers create a thermometer capable of measuring temperatures as low as tens of trillionths of a degree above absolute zero. By leveraging the magnetization of atoms in a magnetic field, scientists were able to extract temperature information from easily measurable properties.
The James Webb Space Telescope's first flight mirror segment has successfully completed its series of cryogenic temperature tests, a crucial step towards the telescope's launch in 2013. The mirrors will undergo further polishing and verification to achieve the required 20 nanometer accuracy.
A new highly sensitive infrared spectrometer has been developed using nonlinear optics, offering 100 times higher sensitivity than current commercial devices. The device eliminates the need for cryogenic cooling, making it practical for various industrial applications.
Researchers at NIST have combined a transition-edge sensor with a microrefrigerator on a single microchip, achieving the first cooling of a fully functional detector. The combo chip offers the possibility of faster and cheaper precision analysis of materials like semiconductors and stardust.
Researchers detected no WIMPs, but the null result is valuable as it informs future detector designs. The Cryogenic Dark Matter Search will move to a deeper site at Snolab in Canada with larger detectors to increase chances of finding dark matter.
Researchers use simultaneous measurements to investigate electron-electron interactions near the metal-insulator transition, revealing a quantum critical point and temperature-dependent interaction strength. The study provides a theory that quantitatively explains phenomena in two-dimensional systems.