Articles tagged with Vacuum
Researchers have developed a new theory for observing the quantum vacuum, which could lead to new insights into black hole behavior. By using sound particles and ultra-cold atoms, they created a two-dimensional cloud where sound waves become audible to an accelerated observer in a silent phonon vacuum.
A team of researchers tested the effectiveness of different fabrics at filtering ultrafine particles, comparable to coughing or heavy breathing. Most fabrics commonly used for non-clinical face masks were found to be effective, with N95 masks being highly effective.
Researchers at NIST create complex structures with nanometer-scale precision using a new 3D-printing method, enabling the production of tiny medical devices such as flexible electrodes. The technique uses electron beams or X-rays to initiate gel formation, allowing for finer structural detail than traditional methods.
Researchers at Linköping University have developed a method to create thin metallic films using free electrons in a plasma, eliminating the need for powerful molecular reducing agents. This innovation enables the production of processors and similar components without the constraints of traditional chemical vapor deposition methods.
The US Army has developed an isolation chamber that captures and removes viral particles from patients with COVID-19, allowing healthcare providers to perform airway management safely. The device may also reduce the need for intubation, potentially saving lives.
Researchers at NIST have found a way to link measurements made by a device integral to microchip fabrication directly to the recently redefined International System of Units (SI), increasing users' confidence in their measurements. The device, a quartz crystal microbalance, is critically important to industries that rely on precision c...
Researchers created a suction unit that can grip rough surfaces, overcoming vacuum leakage limitations. The zero-pressure difference method uses a high-speed rotating water ring to maintain vacuum and achieve energy efficiency.
Researchers at UC Berkeley discovered that heat energy can be transferred across a few hundred nanometers of empty space through the Casimir interaction, a quantum mechanical phenomenon. This finding could have profound implications for designing microelectronic components where heat dissipation is key.
The new instrument has helped scientists pick out dozens of gravitational wave signals, including one from a binary neutron star merger. This extended range has enabled LIGO to detect gravitational waves on an almost weekly basis, with the detectors now reaching distances of over 400 million light years.
A large Canadian study found episiotomy can reduce the risk of severe perineal tears in instrument-assisted vaginal deliveries, particularly among first-time mothers. The rate of severe perineal tears has increased in Canada due to improved detection and reporting, affecting up to 15% of births.
New UBC research finds a higher risk of severe tears with unassisted episiotomies, while assisted births like forceps deliveries show some protection against perineal injury. The study suggests caution in applying general guidelines for all vaginal deliveries.
A research team investigated the possibility of negative energy in quantum physics, finding that while energy can be less than zero under certain conditions, it must be paid back. The study placed tight bounds on negative energy and connected it to quintessential properties of quantum mechanics.
Researchers at Osaka University discover novel mechanism of microbubble implosion, achieving ultrahigh electrostatic field near Schwinger limit. The density during compression reaches several hundred thousand to one million times solid density.
The James Webb Space Telescope successfully completed its final thermal vacuum test, with the spacecraft element exposed to extreme temperatures and conditions. The test paves the way for the integration of the telescope and spacecraft elements, a crucial step towards launch.
A new study reveals that charged particles can emit bright flashes of gamma rays by interacting with the quantum vacuum, challenging a long-held assumption about the nature of empty space. The researchers used high-powered lasers and strong magnetic fields to create conditions where Cherenkov emission could occur in vacuum.
A research team at Toyohashi University of Technology has developed a novel fire extinguisher concept called Vacuum Extinguish Method (VEM), which uses vacuum to suck in flames and combustion products. This method is suitable for enclosed spaces like spacecraft or submarines, where traditional extinguishers can spread harmful gases.
Researchers at Osaka University have developed a glue-free bimorph deformable mirror that can be used in vacuum chambers. The new technology uses inorganic silver nanoparticles to bond PZT actuators to a mirror substrate, allowing for precise shape modification and high-precision optics.
A new research group at the University of Jena has demonstrated quantum vacuum processes for the first time, using strong fields and high-performance lasers. The experiments aim to provide evidence for fundamental physics assumptions, with potential applications in medicine, life sciences, and materials research.
Researchers Korbut observed crowds in metro-mobs to understand how they move and coordinate actions, finding that individuals follow free space minimization rules and rely on others' movements for direction. The study highlights the importance of speed control, stopping signals, and joining methods in mob organization.
Researchers have successfully reversed and made repulsive Casimir forces, tunable and enhanced by external magnetic fields. By inserting a chiral material between plates, they created an oscillatory force with large magnitude, reflecting macroscopic effects of quantum fluctuations.
The research team measured the Casimir torque's effect on liquid crystals, proving its significance in twisting them. The findings could lead to new nanoscale devices, such as actuators or motors, and help researchers understand nanoscale part motions powered by the Casimir effect.
Researchers use newly connected tools to map out previously inaccessible details of a high-temperature superconductor's phase diagram. The study reveals interesting characteristics on the 'far side' of the dome, including simpler quirkiness that disappears on the overdoped far side.
The Society of Vascular and Interventional Neurology presents the latest clinical trials and breakthrough technology related to vacuum aspiration for removing blood clots in stroke patients. The results aim to improve the lives of stroke patients worldwide.
A new portable vacuum gauge, developed by NIST scientists, tracks changes in the number of cold lithium atoms trapped by laser and magnetic fields to measure pressure. This innovation uses ultracold trapped lithium atoms, which have an exceptionally low vapor pressure at room temperature.
Researchers from Yale, Harvard, and Northwestern University found that many theorized heavy particles may not exist, contradicting the Standard Model. The study's results suggest a smaller electron EDM, challenging alternative theories like supersymmetry and grand unified theories.
A randomized clinical trial examined the timing of pushing during delivery, finding no significant difference between immediate and delayed pushing in rates of natural delivery or adverse outcomes among newborns. However, rates of hemorrhage and infection were higher among women who delayed pushing.
Scientists at TU Wien and Cornell University develop a novel method to create ultra-pure ice and apply it to titanium dioxide surfaces, revealing that smallest impurities are surprisingly significant. The study finds that two organic acids, acetic acid and formic acid, are the main culprits behind surface contamination.
Researchers at Purdue University have created a machine that spins at over 60 billion revolutions per minute, allowing them to study the properties of vacuum and its effects on materials. This breakthrough technology has the potential to advance our understanding of quantum mechanics and material science.
Mass deforestation in Colombia's Andes-Amazon 'biodiversity bridge' is threatening the region's ecosystems and thousands of rare species. The area, once controlled by FARC soldiers, has been cleared at an alarming rate for farms and coca crops.
The IUPUI 360 Dust Analysis project offers free testing of household dust contaminants, including lead and chromium, which can be tracked inside or blown in from outside. Participants receive detailed information about their dust and suggestions to mitigate any health risks.
Researchers at Columbia University have developed a single molecular insulator that can effectively block leakage current in transistors, paving the way for smaller and more efficient devices. The breakthrough uses quantum interference-based approach to create a novel technique for blocking tunnelling conduction at the nanoscale.
A French nanorobotics team has successfully assembled the world's smallest house using a new microassembly system. The μRobotex nanofactory allows for precise control over nanostructures and optical fibers, enabling advanced sensing technologies and applications.
Researchers studied liquid sheet behavior in open space without air interaction, considering vacuum oil with variable viscosity and surface tension. They found instabilities due to temperature gradients and surface tension gradients, which can lead to fragmentation of the sheet into droplets.
Brazil's new synchrotron light source, Sirius, has selected 23 suppliers from 18 firms to develop its high-tech components. The suppliers were chosen based on their ability to develop world-class advanced technologies and meet the project's strict parameters.
A new device has been developed to reduce radiation exposure in nanoscale-level imaging of living cells, allowing for more accurate and undamaged images. This innovation enables the study of biological, chemical, and materials science samples in their near-native environments.
Scientists at TUM found that electrodes are wetted twice as fast in a vacuum than under normal pressure. The liquid spreads evenly from all four sides, reducing electrolyte absorption by ten percent.
Researchers successfully synthesized a purely honeycomb borophene sheet on an Al(1 1 1) surface, exhibiting a planar, non-buckled honeycomb lattice similar to graphene. Theoretical calculations show that the structure is energetically stable and could enable superconductivity.
After completing 100 days of cryogenic testing, NASA's James Webb Space Telescope has emerged from Chamber A at the Johnson Space Center. The telescope is now set to be integrated with its spacecraft element in California, marking a crucial step towards its launch as the world's premier infrared space observatory.
Researchers have discovered evidence of dynamical dark energy, suggesting that the nature of dark energy may not be a constant vacuum energy. The discovery was made possible by high-precision measurements of Baryonic Acoustic Oscillations and will require confirmation from next-generation astronomical surveys.
Gallium selenide, a 2D semiconductor, loses electrical conductivity in air due to oxidation, hindering its application in nanoelectronic devices. Encapsulating GaSe in vacuum-manufactured devices with protective layers can maintain its optoelectronic properties.
North Carolina State University engineers have developed a hands-free method for filling complex microchannels with liquid metal using vacuum, eliminating the need for outlets and reducing defects. This approach enables broader use of liquid metals in electronic and microfluidic applications.
Researchers from TU Dresden and CiQUS successfully synthesized decacene, the longest acene molecule ever produced. The breakthrough achievement demonstrates the power of collaboration between synthetic chemists and surface scientists to overcome long-standing chemical challenges.
The telescope is cooled to minus 387 Fahrenheit as scientists and engineers monitor its performance with temperature sensors and cameras. Once complete, the telescope will be integrated with the spacecraft and sunshield at Northrop Grumman, California, before undergoing final tests called 'observatory-level testing,'
A new inorganic adhesive method was developed to overcome the challenges of using organic adhesive in cryogenic adsorption pumps. The method involves combining membranes of metals with good compatibility, creating a strong adhesive force. The new pump achieved seven times larger pumping speed compared to previous models.
A new micropropulsion system for CubeSats uses an innovative design of tiny nozzles that release precise bursts of water vapor to maneuver the spacecraft. The FEMTA thruster technology demonstrates a thrust-to-power ratio of 230 micronewtons per watt, making it a viable method for attitude control of CubeSats.
The James Webb Space Telescope will undergo a three-month test period at NASA's Johnson Space Center to prove its ability to operate in space-like conditions. Chamber A, a historic Apollo-era test chamber, simulates temperatures as low as -393 degrees Fahrenheit, essential for detecting infrared light from distant objects.
Researchers at the Weizmann Institute of Science have developed a method to overcome the fundamental limit on particle density in atomic and molecular-beam experiments. By cooling skimmers to lower temperatures, they significantly reduced shockwaves and increased beam density, enabling more interesting chemical reactions.
Research found midpelvic operative vaginal deliveries associated with 80% higher severe complications for babies, compared to cesarean delivery. The study also revealed five- to ten-fold higher rates of birth trauma in midpelvic forceps and vacuum deliveries.
Researchers at Jülich's Peter Grünberg Institute have created a new method for high-resolution electron energy loss spectroscopy (HREELS) that allows for fast and efficient measurements. This innovation enables scientists to investigate unstable or sensitive samples, paving the way for breakthroughs in materials analysis.
Researchers used a temperature gradient to levitate ceramic, polyethylene spheres, glass bubbles, ice particles, lint strands and thistle seeds in a vacuum chamber for over an hour. The method achieved radial and vertical stability, expanding possibilities for particle dynamics and interactions in microgravity environments.
Researchers detect electromagnetic fluctuations in the quantum vacuum using a world-leading optical measurement technique. The findings could lead to breakthroughs in understanding radiation and material properties.
Research from Kyushu University found that even small amounts of impurities in the vacuum chamber can significantly impact OLED lifetime. The study analyzed environmental conditions and detected a correlation between shorter deposition times and increased degradation rates.
Researchers have detected linear polarisation in the light passing through the vacuum surrounding a neutron star, suggesting that strong magnetic fields can affect the properties of empty space. This finding provides experimental support for predictions made 80 years ago about vacuum birefringence.
Researchers successfully merge light and matter, creating a new condensed matter state with strongly coupled electrons. The discovery could advance technologies like quantum computers and communications by revealing new phenomena in cavity quantum electrodynamics.
Purdue University researchers have successfully controlled the electron spin of a levitated nanodiamond using lasers in a vacuum, enabling potential applications in quantum information processing, sensors, and fundamental physics studies. The technique could also be used to detect and measure gases, such as oxygen, with improved accuracy.
Researchers have developed a new squeezed vacuum source that can reduce phase noise in laser interferometers, enabling the detection of weaker gravitational waves. This advancement could enable the observation of more faint signals from distant events, including neutron star collisions.
The OSIRIS-REx spacecraft is being tested in a thermal vacuum chamber to evaluate its performance under extreme conditions. The 22-day test will assess the spacecraft's instruments and systems, ensuring they can withstand the harsh environment of space.
Researchers at MIT have developed a new approach to making solar cells, resulting in the thinnest and lightest complete solar cells ever made. The new process enables the creation of ultra-thin, flexible solar cells that can be integrated into various materials or surfaces, opening up new possibilities for portable electronic devices.
Researchers developed a portable ultrahigh vacuum storage system to securely transport air-sensitive platinum metal clusters for XAFS measurements. The 'suitcase' can store up to three samples and is designed for public transportation, reducing travel time and increasing accessibility.
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.