Getting hold of quantum dot biosensors
SCIENCE DAILY
Harnessing the nano-tractor-beam like abilities of optical tweezers, researchers have developed an all-silicon nanoantenna to trap individual quantum dots suspended in a microfluidic chamber.
Harnessing the nano-tractor-beam like abilities of optical tweezers, researchers have developed an all-silicon nanoantenna to trap individual quantum dots suspended in a microfluidic chamber.
10 hours
Bond dissociation energies for transition metal silicides accurately determined
SCIENCE DAILY
Transition metal silicides are promising for future developments in electronic devices, but fundamental aspects of the chemical bonding between their transition metal atoms and silicon remain poorly understood. One of...
Transition metal silicides are promising for future developments in electronic devices, but fundamental aspects of the chemical bonding between their transition metal atoms and silicon remain poorly understood. One of the most important, but poorly known, properties is the strength...
12 hours
Getting hold of quantum dot biosensors
PHYS.ORG
Quantum dots (QDs) have found so many applications in recent years, they can now be purchased with a variety of composite structures and configurations. Some are available suspended in a biologically friendly fluid, making them well...
Quantum dots (QDs) have found so many applications in recent years, they can now be purchased with a variety of composite structures and configurations. Some are available suspended in a biologically friendly fluid, making them well poised to serve as...
14 hours
Bond dissociation energies for transition metal silicides accurately determined
PHYS.ORG
Transition metal silicides, a distinct class of semiconducting materials that contain silicon, demonstrate superior oxidation resistance, high temperature stability and low corrosion rates, which make them promising for a variety...
Transition metal silicides, a distinct class of semiconducting materials that contain silicon, demonstrate superior oxidation resistance, high temperature stability and low corrosion rates, which make them promising for a variety of future developments in electronic devices. Despite their relevance to...
14 hours
Quantum ruler for biomolecules
SCIENCE DAILY
Quantum physics teaches us that unobserved particles may propagate through space like waves. This is philosophically intriguing and of technological relevance: a research team has demonstrated that combining experimental quantum interferometry with quantum chemistry allows deriving information about optical and...
Quantum physics teaches us that unobserved particles may propagate through space like waves. This is philosophically intriguing and of technological relevance: a research team has demonstrated that combining experimental quantum interferometry with quantum chemistry allows deriving information about optical and...
15 hours
Can 'large stars' anti-aging research' help future memory devices?
SCIENCE DAILY
Nothing is forever, but is it possible to slow down inescapable decay? An inquiry into the delay of deterioration of quantum memory devices and formation of black holes explained with...
Nothing is forever, but is it possible to slow down inescapable decay? An inquiry into the delay of deterioration of quantum memory devices and formation of black holes explained with intuitive analogies from everyday life.
16 hours
Unconventional quantum systems may lead to novel optical devices
PHYS.ORG
(Phys.org)—Physicists have experimentally demonstrated an optical system based on an unconventional class of quantum mechanical systems that could lead to the development of new quantum optical devices. The system is...
(Phys.org)—Physicists have experimentally demonstrated an optical system based on an unconventional class of quantum mechanical systems that could lead to the development of new quantum optical devices. The system is called a "PT-symmetric quantum walk," since it consists of single...
16 hours
Physicists measure molecular electronic properties of vitamins
PHYS.ORG
Quantum physics teaches us that unobserved particles may propagate through space like waves. This is philosophically intriguing and of technological relevance: a research team at the University of Vienna has demonstrated that combining experimental...
Quantum physics teaches us that unobserved particles may propagate through space like waves. This is philosophically intriguing and of technological relevance: a research team at the University of Vienna has demonstrated that combining experimental quantum interferometry with quantum chemistry allows...
17 hours
Can anti-aging research help future memory devices?
PHYS.ORG
Nothing is forever, but is it possible to slow down inescapable decay? An inquiry into the delay of deterioration of quantum memory devices and formation of black holes explained with intuitive analogies from everyday...
Nothing is forever, but is it possible to slow down inescapable decay? An inquiry into the delay of deterioration of quantum memory devices and formation of black holes explained with intuitive analogies from everyday life
18 hours
Female patients with esophageal cancer have superior response to treatment, study reveals
NEWS MEDICAL
Female patients with locally advanced esophageal cancer that is treated with chemotherapy and radiation therapy before surgery are more likely to have a favorable...
Female patients with locally advanced esophageal cancer that is treated with chemotherapy and radiation therapy before surgery are more likely to have a favorable response to the treatment than male patients are, and women are less likely to experience cancer...
19 hours
Electrons flowing like liquid in graphene start a new wave of physics
PHYS.ORG
A new understanding of the physics of conductive materials has been uncovered by scientists observing the unusual movement of electrons in graphene.
A new understanding of the physics of conductive materials has been uncovered by scientists observing the unusual movement of electrons in graphene.
20 hours
Physicists explore a new recipe for heating plasma
PHYS.ORG
In the quest for fusion energy, scientists have spent decades experimenting with ways to make plasma fuel hot and dense enough to generate significant fusion power. At MIT, researchers have focused their...
In the quest for fusion energy, scientists have spent decades experimenting with ways to make plasma fuel hot and dense enough to generate significant fusion power. At MIT, researchers have focused their attention on using radio-frequency (RF) heating in magnetic...
20 hours
Boeing, Northrop get contracts for nuclear missile work
PHYS.ORG
The Air Force said Monday it has awarded contracts to Boeing Co. and Northrop Grumman Corp. for work that could lead to replacement of the nation's intercontinental ballistic missiles.
The Air Force said Monday it has awarded contracts to Boeing Co. and Northrop Grumman Corp. for work that could lead to replacement of the nation's intercontinental ballistic missiles.
23 hours
Fusion heating gets a boost
MIT
The Plasma Science and Fusion Center explores a new recipe for heating plasma.
The Plasma Science and Fusion Center explores a new recipe for heating plasma.
1 day
It Rains Diamonds on ‘Ice Giant’ Planets
SCI-NEWS.COM
A new experiment at SLAC National Accelerator Laboratory reveals how large diamonds may be formed from just hydrogen and carbon in the...
A new experiment at SLAC National Accelerator Laboratory reveals how large diamonds may be formed from just hydrogen and carbon in the deep interior of ice giant planets such as Neptune and Uranus. Dr. Dominik Kraus, a scientist at Helmholtz...
1 day
Heating quantum matter: A novel view on topology
SCIENCE DAILY
Certain quantities appear as integer multiples of fundamental and indivisible elements. This quantization of physical quantities at the heart of our description of nature, made its way through the centuries, as evidenced...
Certain quantities appear as integer multiples of fundamental and indivisible elements. This quantization of physical quantities at the heart of our description of nature, made its way through the centuries, as evidenced by the antique concept of the atom. The...
1 day
Newly developed nomograms provide accurate predictions for patients with oropharyngeal cancer
SCIENCE DAILY
Researchers recently developed and validated a nomogram that can predict 2-year and 5-year overall survival (OS) and progression-free survival (PFS) for patients with local-regionally advanced oropharyngeal...
Researchers recently developed and validated a nomogram that can predict 2-year and 5-year overall survival (OS) and progression-free survival (PFS) for patients with local-regionally advanced oropharyngeal squamous cell carcinoma (OPSCC) treated primarily with radiation-based therapy.
2 days
UAE nuclear programme edges toward 2018 launch
PHYS.ORG
At first glance, the long hallway seems abandoned. But behind glass walls, in soundproof offices, engineers and physicists are putting the final touches to the Arab world's first nuclear programme.
At first glance, the long hallway seems abandoned. But behind glass walls, in soundproof offices, engineers and physicists are putting the final touches to the Arab world's first nuclear programme.
2 days
Physicists resolve long-standing mystery of structure-less transition
PHYS.ORG
Nagoya University-led team of physicists use a synchrotron radiation X-ray source to probe a so-called "structure-less" transition and develop a new understanding of molecular conductors.
Nagoya University-led team of physicists use a synchrotron radiation X-ray source to probe a so-called "structure-less" transition and develop a new understanding of molecular conductors.
2 days
How heating up a quantum system can be used as a universal probe for exotic states of matter
PHYS.ORG
In physical sciences, certain quantities appear as integer multiples of fundamental and...
In physical sciences, certain quantities appear as integer multiples of fundamental and indivisible elements. This quantization of physical quantities, which is at the heart of our description of nature, made its way through the centuries, as evidenced by the antique...
2 days
Avoiding disruptions that halt fusion reactions
PHYS.ORG
Inside a fusion experiment, where scientists study the reactions at the heart of our sun, disruptions—large-scale instabilities of the plasma—cause rapid and complete loss of magnetic confinement. Models of fusion plasmas now combine advanced numerical methods...
Inside a fusion experiment, where scientists study the reactions at the heart of our sun, disruptions—large-scale instabilities of the plasma—cause rapid and complete loss of magnetic confinement. Models of fusion plasmas now combine advanced numerical methods with high-performance computing capabilities....
2 days
Testing TVs and tablets for 'green' screens
PHYS.ORG
To improve viewing pleasure, companies have developed television—and tablet screens—that include quantum dots to enhance brightness and color. Some quantum dots are made with potentially harmful metals, which could leach into the environment when...
To improve viewing pleasure, companies have developed television—and tablet screens—that include quantum dots to enhance brightness and color. Some quantum dots are made with potentially harmful metals, which could leach into the environment when the device is discarded. But other...
2 days
NICER and LISA to Confirm or Disprove Predictions of General Relativity
ASTRO WATCH
Two astrophysical missions, NICER and LISA, could soon change our understanding of the universe....
Two astrophysical missions, NICER and LISA, could soon change our understanding of the universe. Scientists hope that both instruments would help them answer fundamental questions about the universe, testing many aspects of Einstein’s theory of general relativity.NASA’s Neutron star Interior...
3 days
Testing TVs and tablets for 'green' screens
SCIENCE DAILY
Today, researchers report preliminary results suggesting that under simulated landfill conditions, quantum dots can leach out of TVs and tablets. But because this happens in such tiny amounts, the team says that in the...
Today, researchers report preliminary results suggesting that under simulated landfill conditions, quantum dots can leach out of TVs and tablets. But because this happens in such tiny amounts, the team says that in the grand scheme of things, it might...
3 days
McCain completes round of radiation, chemo for brain cancer
ABC NEWS
The daughter of U.S. Sen. John McCain of Arizona says the 80-year-old lawmaker has completed the first round of radiation and chemotherapy as he battles an aggressive form of brain...
The daughter of U.S. Sen. John McCain of Arizona says the 80-year-old lawmaker has completed the first round of radiation and chemotherapy as he battles an aggressive form of brain cancer
4 days
Astrophysicists Explain the Mysterious Behavior of Cosmic Rays
ASTRO WATCH
A team of scientists from Russia and China has developed a model which explains the nature of high-energy cosmic rays...
A team of scientists from Russia and China has developed a model which explains the nature of high-energy cosmic rays (CRs) in our Galaxy. These CRs have energies exceeding those produced by supernova explosions by one or two orders of...
4 days
Crystallization-induced emission enhancement: A novel fluorescent Au-Ag bimetallic nanocluster with precise atomic structure
Science Magazine
We report the first noble metal nanocluster with a formula of Au4Ag13(DPPM)3(SR)9 exhibiting crystallization-induced emission enhancement (CIEE), where DPPM denotes bis(diphenylphosphino)methane and...
We report the first noble metal nanocluster with a formula of Au4Ag13(DPPM)3(SR)9 exhibiting crystallization-induced emission enhancement (CIEE), where DPPM denotes bis(diphenylphosphino)methane and HSR denotes 2,5-dimethylbenzenethiol. The precise atomic structure is determined by x-ray crystallography. The crystalline state of Au4Ag13 shows...
4 days
Multiple-wavelength neutron holography with pulsed neutrons
Science Magazine
Local structures around impurities in solids provide important information for understanding the mechanisms of material functions, because most of them are controlled by dopants. For this purpose, the x-ray absorption fine structure method, which provides radial...
Local structures around impurities in solids provide important information for understanding the mechanisms of material functions, because most of them are controlled by dopants. For this purpose, the x-ray absorption fine structure method, which provides radial distribution functions around specific...
4 days
Mach-Zehnder interferometry using spin- and valley-polarized quantum Hall edge states in graphene
Science Magazine
Confined to a two-dimensional plane, electrons in a strong magnetic field travel along the edge in one-dimensional quantum Hall channels that are protected against...
Confined to a two-dimensional plane, electrons in a strong magnetic field travel along the edge in one-dimensional quantum Hall channels that are protected against backscattering. These channels can be used as solid-state analogs of monochromatic beams of light, providing a...
4 days
Identifying time scales for violation/preservation of Stokes-Einstein relation in supercooled water
Science Magazine
The violation of the Stokes-Einstein (SE) relation D ~ (/T)–1 between the shear viscosity and the translational diffusion constant D at temperature T is of great...
The violation of the Stokes-Einstein (SE) relation D ~ (/T)–1 between the shear viscosity and the translational diffusion constant D at temperature T is of great importance for characterizing anomalous dynamics of supercooled water. Determining which time scales play key...
4 days
Correlation-induced superconductivity dynamically stabilized and enhanced by laser irradiation
Science Magazine
Studies on out-of-equilibrium dynamics have paved a way to realize a new state of matter. Superconductor-like properties above room temperatures recently suggested to be in copper oxides achieved by selectively...
Studies on out-of-equilibrium dynamics have paved a way to realize a new state of matter. Superconductor-like properties above room temperatures recently suggested to be in copper oxides achieved by selectively exciting vibrational phonon modes by laser have inspired studies on...
4 days
Probing topology by "heating": Quantized circular dichroism in ultracold atoms
Science Magazine
We reveal an intriguing manifestation of topology, which appears in the depletion rate of topological states of matter in response to an external drive. This phenomenon is presented...
We reveal an intriguing manifestation of topology, which appears in the depletion rate of topological states of matter in response to an external drive. This phenomenon is presented by analyzing the response of a generic two-dimensional (2D) Chern insulator subjected...
4 days
A quick and easy way to shut down instabilities in fusion devices
PHYS.ORG
Scientists have discovered a remarkably simple way to suppress a common instability that can halt fusion reactions and damage the walls of reactors built...
Scientists have discovered a remarkably simple way to suppress a common instability that can halt fusion reactions and damage the walls of reactors built to create a "star in a jar." The findings, published in June in the journal Physical...
4 days
Quick and easy way to shut down instabilities in fusion devices
SCIENCE DAILY
Scientists have discovered a remarkably simple way to suppress a common instability that can halt fusion reactions and damage the walls of reactors built to create...
Scientists have discovered a remarkably simple way to suppress a common instability that can halt fusion reactions and damage the walls of reactors built to create a "star in a jar."
5 days
Engineers deliver new key components to help power a fusion energy experiment
PHYS.ORG
Fusion power, which lights the sun and stars, requires temperatures of millions of degrees to fuse the particles inside plasma, a soup of charged...
Fusion power, which lights the sun and stars, requires temperatures of millions of degrees to fuse the particles inside plasma, a soup of charged gas that fuels fusion reactions. Here on Earth, scientists developing fusion as a safe, clean and...
5 days
Abnormal eating schedules affect skin’s protection from harmful UV rays of the sun
NEWS MEDICAL
Sunbathers may want to avoid midnight snacks before catching some rays. A study in mice from the O'Donnell Brain Institute and UC Irvine shows...
Sunbathers may want to avoid midnight snacks before catching some rays. A study in mice from the O'Donnell Brain Institute and UC Irvine shows that eating at abnormal times disrupts the biological clock of the skin, including the daytime potency...
5 days
Proton-M Launches Military Satellite into Orbit
ASTRO WATCH
A military communications satellite, known as Blagovest 11L, has been successfully launched into space by a Proton-M heavy-lift rocket. The launch vehicle thundered off...
A military communications satellite, known as Blagovest 11L, has been successfully launched into space by a Proton-M heavy-lift rocket. The launch vehicle thundered off from Site 81/24 at the Baikonur Cosmodrome in Kazakhstan at exactly 4:07 a.m. local time on...
5 days
Why It's Dangerous to Condition Your Hair After a Nuclear Attack
LIVE SCIENCE
Last week, when North Korea was threatening to send a ballistic missile toward the U.S. territory of Guam, the island's inhabitants were warned that in the...
Last week, when North Korea was threatening to send a ballistic missile toward the U.S. territory of Guam, the island's inhabitants were warned that in the case of a nuclear attack, they should not condition their hair.
5 days
Methanogenic heterodisulfide reductase (HdrABC-MvhAGD) uses two noncubane [4Fe-4S] clusters for reduction
Science Magazine
In methanogenic archaea, the carbon dioxide (CO2) fixation and methane-forming steps are linked through the heterodisulfide reductase (HdrABC)–[NiFe]-hydrogenase (MvhAGD) complex that uses flavin-based electron bifurcation to...
In methanogenic archaea, the carbon dioxide (CO2) fixation and methane-forming steps are linked through the heterodisulfide reductase (HdrABC)–[NiFe]-hydrogenase (MvhAGD) complex that uses flavin-based electron bifurcation to reduce ferredoxin and the heterodisulfide of coenzymes M and B. Here, we present the...
5 days
Comprehensive single-cell transcriptional profiling of a multicellular organism
Science Magazine
To resolve cellular heterogeneity, we developed a combinatorial indexing strategy to profile the transcriptomes of single cells or nuclei, termed sci-RNA-seq (single-cell combinatorial indexing RNA sequencing). We applied sci-RNA-seq to profile nearly...
To resolve cellular heterogeneity, we developed a combinatorial indexing strategy to profile the transcriptomes of single cells or nuclei, termed sci-RNA-seq (single-cell combinatorial indexing RNA sequencing). We applied sci-RNA-seq to profile nearly 50,000 cells from the nematode Caenorhabditis elegans at...
5 days
In situ architecture, function, and evolution of a contractile injection system
Science Magazine
Contractile injection systems mediate bacterial cell-cell interactions by a bacteriophage tail–like structure. In contrast to extracellular systems, the type 6 secretion system (T6SS) is defined by...
Contractile injection systems mediate bacterial cell-cell interactions by a bacteriophage tail–like structure. In contrast to extracellular systems, the type 6 secretion system (T6SS) is defined by intracellular localization and attachment to the cytoplasmic membrane. Here we used cryo-focused ion beam...
5 days
TED-Ed: The hunt for dark matter
CERN
VIDEO
Around 85% of the matter in our Universe is a mystery. If this dark matter has never been observed, how do we know what it is, and how do scientists know where to start looking? This...
Around 85% of the matter in our Universe is a mystery. If this dark matter has never been observed, how do we know what it is, and how do scientists know where to start looking? This new animation, made in...
6 days
NASA Protects its super heroes from space weather
SCIENCE DAILY
When astronauts travel in space they can't see or even feel radiation. However, NASA's Human Research Program (HRP) is studying the effects radiation plays on the human body and developing ways to...
When astronauts travel in space they can't see or even feel radiation. However, NASA's Human Research Program (HRP) is studying the effects radiation plays on the human body and developing ways to monitor and protect against this silent hazard.
6 days
Sharp X-ray pulses from the atomic nucleus
PHYS.ORG
X-rays make the invisible visible: they permit the way materials are structured to be determined all the way down to the level of individual atoms. In the 1950s it was x-rays which revealed the...
X-rays make the invisible visible: they permit the way materials are structured to be determined all the way down to the level of individual atoms. In the 1950s it was x-rays which revealed the double-helix structure of DNA. With new...
6 days
Psychology of Hate: What Motivates White Supremacists?
LIVE SCIENCE
Nascent supremacists are like atoms missing a proton. They're lacking something socially or emotionally, and white supremacist groups step in to fill the void.
Nascent supremacists are like atoms missing a proton. They're lacking something socially or emotionally, and white supremacist groups step in to fill the void.
6 days
Newly upgraded laser peers further into the extreme universe at SLAC's LCLS
PHYS.ORG
Scientists at the Department of Energy's SLAC National Accelerator Laboratory recently upgraded a powerful optical laser system used to create shockwaves that generate high-pressure...
Scientists at the Department of Energy's SLAC National Accelerator Laboratory recently upgraded a powerful optical laser system used to create shockwaves that generate high-pressure conditions like those found within planetary interiors. The laser system now delivers three times more energy...
6 days
Magnetic resonance is used to evaluate food quality
PHYS.ORG
The applications and benefits of nuclear magnetic resonance (NMR) in medicine are well known, but the technology is also used in other areas, such as agribusiness, where its applications include quality analysis...
The applications and benefits of nuclear magnetic resonance (NMR) in medicine are well known, but the technology is also used in other areas, such as agribusiness, where its applications include quality analysis of seeds and other products of animal and...
6 days
129I waste used to track ocean currents for 15,000 km after discharge from nuclear plants
PHYS.ORG
Radioactive 129I has travelled the equivalent of a third of the way round the globe, since being released...
Radioactive 129I has travelled the equivalent of a third of the way round the globe, since being released from nuclear fuel reprocessing plants in the UK and France. The iodine's 15,000 km journey begins in the nuclear plants at Sellafield...
7 days
Physicists measure complementary properties using quantum clones
PHYS.ORG
(Phys.org)—In quantum mechanics, it's impossible to precisely and simultaneously measure the complementary properties (such as the position and momentum) of a quantum state. Now in a new study, physicists have cloned quantum states and...
(Phys.org)—In quantum mechanics, it's impossible to precisely and simultaneously measure the complementary properties (such as the position and momentum) of a quantum state. Now in a new study, physicists have cloned quantum states and demonstrated that, because the clones are...
7 days
Scientists reveal engineered fusion protein that could recover blood vessel health
NEWS MEDICAL
Scientists from Boston Children's Hospital Vascular Biology Program have revealed an engineered fusion protein that could recover blood vessel health following the onset of hypertension, atherosclerosis,...
Scientists from Boston Children's Hospital Vascular Biology Program have revealed an engineered fusion protein that could recover blood vessel health following the onset of hypertension, atherosclerosis, stroke, heart attack, and other cardiovascular diseases.
7 days
Shortcuts...
Facebook
Twitter
Email
About PS
Log In
Register
Video
Trending
Fresh
America Was Once Tricked Into Believing Nuclear War Had Begun
SCIENCE