The artificial atom is actually a superconducting electrical circuit that the researchers make behave as an atom.
and in reality is microwaves.""We have demonstrated how we can control the lifetime of an atom in a very simple way,
#What are these nanostars in 2-D superconductor supposed to mean? Physicists from France and Russia have discovered magnetic disturbances in 2d superconductor layer,
resembling little oscillating stars. These starlike excitations are caused by a single magnetic atom put into the layer of superconducting material.
Physicists from France and Russia have discovered that the magnetic atoms in a two-dimensional layered superconductor create electronic disturbances that look like oscillating"nanostars".
and their colleagues from Paris-Saclay University studied the emergence of Yu-Shiba-Rusinov (YSR) states bound around single magnetic atoms embedded in a two-dimensional superconductor.
magnetic excitations extend over a greater distance as compared to ordinary three-dimensional superconductors, and the emergent YSR quantum states are more stable,
"We have demonstrated that the use of two-dimensional superconductors instead of the three dimensional ones results in an increase in the spatial extension of YSR states for several dozen nanometres,
i e. ten times further than in"normal"three-dimensional superconductors. And the area of excitation was shaped like a sixfold electronic"star"with its rays extending along the axis of the crystal lattice of niobium diselenide.
The main purpose of the Laboratory is to study the quantum properties of new superconductors and topologically protected materials,
They suggested that magnetic atoms introduced into a superconductor must create special states of excitation around themselves-electron-hole standing waves named after their discoverers.
but rather special excitations in two-dimensional quantum systems in a magnetic field. The theory predicts that such non-Abelian anyons may occur in a two-dimensional"liquid"of electrons in a superconductor under the influence of a local magnetic field.
The electron liquid thus becomes degenerate, i e. the electrons can have different states at the same energy level.
to being generated mostly by electric dipole transitions (the linear push and pull of electric forces). Those two emission pathways have distinct spectra,
These could be electrical fields when dealing with atoms and ions or magnetic fields in superconducting qubits."
Finding could have implications for high-temperature superconductivity A team of physicists led by Caltech's David Hsieh has discovered an unusual form of matter--not a conventional metal, insulator,
This phase, characterized by an unusual ordering of electrons, offers possibilities for new electronic device functionalities and could hold the solution to a longstanding mystery in condensed matter physics having to do with high-temperature superconductivity--the ability
they form a ferromagnet--the type of magnet you might use on your refrigerator and that is used in the strip on your credit card.
Cuprates are the only family of materials known to exhibit superconductivity at high temperatures--exceeding 100 Kelvin(-173 degrees Celsius.
A high enough level of doping will transform cuprates into high-temperature superconductors, and as cuprates evolve from being insulators to superconductors, they first transition through a mysterious phase known as the pseudogap,
where an additional amount of energy is required to strip electrons out of the material. For decades, scientists have debated the origin of the pseudogap
and its relationship to superconductivity--whether it is a necessary precursor to superconductivity or a competing phase with a distinct set of symmetry properties.
"There is also very recent work by other groups showing signatures of superconductivity in Sr2iro4 of the same variety as that found in cuprates,
"Given the highly similar phenomenology of the iridates and cuprates, perhaps iridates will help us resolve some of the longstanding debates about the relationship between the pseudogap and high-temperature superconductivity."
The synthesized magnetic composite is separated from the solution phase in the presence of a magnetic field in a short time through this method.
Now scientists report in the journal ACS Nano("Hierarchical Porous Nitrogen-Doped Carbon Nanosheets Derived from Silk for Ultrahigh-Capacity Battery Anodes and Supercapacitors")the development of a new,
or neutralizing cathodes, it has a higher thrust-to-mass ratio than low-power, plasma-based ion engines meaning it packs a Punch in January,
The Columbia team, led by Electrical engineering Associate professor Harish Krishnaswamy, is the first to demonstrate an IC that can accomplish this.
"We are working closely with Electrical engineering Associate professor Gil Zussman's group, who are network theory experts here at Columbia Engineering,
fundamental questions for the larger scientific community,"said Michel Maharbiz, an associate professor in UC Berkeley's Department of Electrical engineering and Computer sciences and the study's principal investigator."
The team successfully suspended glass particles 400 nanometres across in a vacuum using an electric field,
"Our solution was to combine the laser beam that cools the glass particle with an electric field
"The electric field also gently moves the glass particle around inside the laser beam, helping it lose temperature more effectively."
and signal processing applications and is well known to limit the capacity of optical fiber communications networks. While we want to avoid this disruption this effect has also some unique properties
which can be harnessed for important applications in manipulating microwave signals and developing certain types of lasers.
"Lithium deposited on the platinum anode at the beginning (top), during (middle) and end (bottom) of the second cycle.
Residual dead lithium can be seen on and around the anode. With the new stage, scientists can directly image changes as they occur.
scientists can now chemically image the interface between the platinum anode and the electrolyte during the battery operation.
and protects the anode. The layer is formed as a result of the electrolyte breaking down. In their studies, the team found that extended battery cycling leads to lithium growing beneath the layer--the genesis of the dendrites that have implications for battery safety and performance.
a physical process that results in colors, says Dr. Junpeng Guo, professor of electrical engineering and optics,
and the Center for Mechatronics and Automation Technology (Zema) is using a new technology based on the shape memory properties of nickel-titanium alloy.
As a result they are dependent on other devices and equipment, such as electric motors or pneumatics they tend to be heavy, relatively inflexible, at times loud,
Additionally, the scientists also focus on developing other triggers for switching the adhesion like light, magnetic field, electric field or changes in temperature.
which involves applying a change in magnetic field to materials, they decided to also explore the potential of elastocaloric cooling.
"This is an important step toward the use of elastocaloric materials in cooling devices such as household refrigerators and air conditioners,
While heat pumps, air conditioners and refrigerators are most likely to benefit from elastocaloric technology, "elastocaloric cooling can be viewed as a direct substitute for vapor compression technology--one that's more efficient
"said Koray Aydin, assistant professor of electrical engineering and computer science at Northwestern University's Mccormick School of engineering.""So the amount of material that is available for light emission or light absorption is limited very.
But for physicists, one common defect known as a nitrogen-vacancy center (NV center) has applications in both quantum information processing and ultra-sensitive magnetometry, the measurement of exceedingly faint magnetic fields.
"JQI Fellow Vladimir Manucharyan and colleagues at Harvard university used NV centers in diamond to sense the properties of magnetic field noise tens of nanometers away from the silver samples.
Since electrons are charged particles, their motion results in fluctuating magnetic fields, which extend outside of the conductor.
Typically, changing magnetic fields can wreak all sorts of havoc, including for the nearby NV centers.
1 and 0. The sensor can be calibrated in the presence of a constant magnetic field such that it is in state 1
. If the sensor experiences an oscillating magnetic field, the sensor switches to state 0. There is one more important component to this sensor--it can detect magnetic field strength as well.
For weak magnetic field fluctuations, the NV sensor will slowly decay to state 0; for stronger fluctuations, it will decay much faster from 1 to 0. By detecting different decay times,
physicists can precisely measure the fluctuating magnetic fields, which tells them about the electron behavior at a very small length scale.
In addition, by changing the nature of the silver sample from polycrystalline to single-crystalline they were able to observe a dramatic difference in the behavioral trends of the magnetic field noise
and corresponding magnetic field noise from the single silver crystal is a departure from so-called Ohmic predictions of the polycrystalline case,
which have led to a decrease in both thermal and electrical conductivity. The new liquid-phase sintering creates grain boundaries
onl prweb About PI PI is a leading manufacturer of precision motion control equipment, piezo motors, air bearing stages and hexapod parallel-kinematics for semiconductor applications, photonics, bio-nano-technology and medical engineering.
Synthetic diamonds with nitrogen vacancies (NVS) defects that are extremely sensitive to magnetic fields have held long promise as the basis for efficient, portable magnetometers.
the Jamieson Career development Assistant professor in Electrical engineering and Computer science and one of the designers of the new device. e make use of almost all the pump light to measure almost all of the NVS.
a graduate student in electrical engineering who is advised by senior authors Englund and Danielle Braje, a physicist at MIT Lincoln Laboratory.
Lead researcher, UNSW Associate professor Andrea Morello from the School of Electrical engineering and Telecommunications, said his team had realised successfully a new control method for future quantum computers.
The findings were published today in the open-access journal Science Advances("Electrically controlling single-spin qubits in a continuous microwave field".
"This is an electron wave in a phosphorus atom, distorted by a local electric field. Unlike conventional computers that store data on transistors and hard drives, quantum computers encode data in the quantum states of microscopic objects called qubits.
can be controlled using electric fields, instead of using pulses of oscillating magnetic fields, "explained UNSW's Dr Arne Laucht,
postdoctoral researcher and lead author of the study. Associate professor Morello said the method works by distorting the shape of the electron cloud attached to the atom,
using a very localized electric field.""This distortion at the atomic level has the effect of modifying the frequency at
"The findings suggest that it would be possible to locally control individual qubits with electric fields in a large-scale quantum computer using only inexpensive voltage generators, rather than the expensive high-frequency microwave sources.
which the built-in electric field creates a well which traps and protects charge carriers. This opens up the possibility of creating entirely new classes of organic electronic devices
It converts solar rays into microwaves--using conventional photovoltaic solar panels--and then beams the microwave's energy to microwave collector farms at designated locations On earth.
since it allows for information carried by light to be converted into electrical information that can be processed in electrical circuits.
This photo-thermoelectric effect turns out to occur almost instantaneously, thus enabling the ultrafast conversion of absorbed light into electrical signals.
whether the meat in their grocery store or refrigerator is safe to eat. The sensor, which consists of chemically modified carbon nanotubes,
so that their ability to carry an electric current changes in the presence of a particular gas.
to calculate the input, in this case the speed of each rotor. This is known as a negative feedback loop,
and resonators (like the body of a guitar) amplify sound. They reported their findings in the May 8, 2015,
Graphene-based quantum electronic resonators and lenses have as yet untold potential but if conventional optics is any guide,
and the atomic structure in the nanotubes halts electric currents. This disparity creates a barrier, caused by the difference in electron movement as currents move next to and past the hairlike boron nitride nanotubes.
This osmological Principleis backed up by observations of the early universe and its microwave background signature
and the contact points with metal connections on silicon are no longer smooth enough to be used efficiently in electrical circuits.
These negatively charged ions produce an electric field that effectively serves as a diode to hinder error-causing crosstalk.
Stepping stones to a Unique State A material's band gap is fundamental to determining its electrical conductivity.
and very soon it could potentially be applied to several sectors including engineering where electrical engineers can adjust the band gap
Image of the magnetic fields recorded by scanning a tiny superconducting coil over the surface of a Lamno3 film grown on a substrate crystal.
on a substrate crystal of nonmagnetic strontium titanate using a method pulsed laser deposition developed many years ago for high-temperature superconductors and multicomponent materials by Prof Venkatesan,
This shift of electric charge occurs as the manganese atomic layers form atomically charged capacitors leading to the build up of an electric field, known as polar catastrophe
The team plans to use local electric fields to controllably turn on/off the magnetism of its 5-layer films
and explore potential applications in microwave devices and magnetic recording. With magnetic memory elements approaching nano dimensions, this technique promises new approaches in magnetic recording and computing g
superconduct together The discovery of a surprising feature of superconductivity in an unconventional superconductor by a RIKEN-led research team provides clues about the superconducting mechanism in this material
and thus could aid the search for room-temperature superconductors. Superconductors conduct electricity with zero resistance,
and hence they could potentially revolutionize electric motors, generators and utility grids. However, scientists have yet to discover a material that becomes superconducting at ambient temperature-all known superconductors operate only at cryogenic temperatures,
making them impractical for general applications. Unfortunately, progress toward achieving the goal of room-temperature superconductivity has been hindered by scientistslimited understanding of the fundamental mechanism responsible for the emergence of this remarkable physical phenomenon.
Superconductivity occurs as the result of pairs of electrons binding together in such a way that they act as a single quasiparticle.
In conventional superconductors, which include elemental materials that become superconducting at temperatures very close to absolute zero,
the binding force is provided by vibrations in the atomic lattice through which the electrons travel.
Yet not all superconductors behave this way. In unconventional superconductors that do not fit the conventional model,
this binding force develops in a different manner and various mechanisms have been proposed for it. One such mechanism is the magnetic
or spin fluctuation of the electrons themselves, which binds electrons in pairs through the entanglement of electron spins.
recent experiments have shown that this mechanism cannot explain the superconducting state in the quintessential unconventional superconductor Cecu2si2.
and are responsible for superconductivity in Cecu2si2. This kind of electron binding may also be present in the recently discovered class of high-temperature iron-based superconductors. e found that the origin of the unconventional superconductivity in Cecu2si2 is an exotic multipole degree of freedom consisting of entangled spins
and orbitals, says Suzuki. he finding urges us to reconsider the mechanism of superconductivity. c
#Water heals a bioplastic (w/video) A drop of water self-heals a multiphase polymer derived from the genetic code of squid ring teeth,
These metasurface devices, described in a paper published online on August 31, 2015, in the journal Nature Nanotechnology("Dielectric metasurfaces for complete control of phase and polarization with subwavelength spatial resolution and high transmission"
Like all light, laser pulses feature electric fields that normally point in many directions. Polarizing a laser pulse aligns these fields along one direction,
making many materials that have good electrical conductivity, flexibility and transparency-all three are needed for foldable electronics-wear out too quickly to be practical,
said Zhifeng Ren, a physicist at the University of Houston and principal investigator at the Texas Center for Superconductivity,
Victor Anaskin) Surface plasmons are electromagnetic waves propagating along a metal-dielectric interface (e g.,, gold/air) and having the amplitudes exponentially decaying in the neighbor media.
creating the intense internal electric field. This field now becomes the dominating factor in determining the emission properties.
and magnetic fields can never vanish simultaneously. As a consequence, even total darkness is filled with finite fluctuations of the electromagnetic field,
An experimental setup to measure electric fields with extremely high temporal resolution and sensitivity has made now it possible to directly detect vacuum fluctuations,
"This device looks a lot like a washing machine, but the dimensions are tiny. Through optical manipulation the particle ring can be squeezed at will,
which is associated with the electron's tiny magnetic field, "he added. Dzurak noted that that the team had patented recently a design for a full-scale quantum computer chip that would allow for millions of our qubits,
or other bulk carbon anodes in a battery,"said Xiulei (David) Ji, the lead author of the study and an assistant professor of chemistry in the College of Science at Oregon State university."
because they open some new alternatives to batteries that can work with well-established and inexpensive graphite as the anode,
Aside from its ability to work well with a carbon anode however, lithium is quite rare,
The new findings show that it can work effectively with graphite or soft carbon in the anode of an electrochemical battery.
and be ready to take the advantage of the existing manufacturing processes of carbon anode materials."
By using a strong magnetic field that interacts with the nuclear spins of carbon atoms in the proteins,
using microwaves generated by a gyrotron, a high-frequency microwave oscillator developed in collaboration with Richard Temkin of MIT Department of physics and Plasma Science and Fusion Center.
In addition, Tim Swager and his group in the MIT Department of chemistry have developed paramagnetic polarizing agents for the experiments.
director of the NMR program at the National High Magnetic field Laboratory and a professor at Florida State university. ou don have to crystallize the proteins,
an Associate professor of Electrical engineering at KAUST, tells Nanowerk. To complement existing designs for stretchable antenna systems
Conventional electron pulse technology uses a static magnetic field to compress the electrons transversely. However, the static field can interfere with the electron source and the sample and lead to temporal distortion of the electron pulses--both
which are coils of wire that create uniform magnetic fields, to focus the electron beams. The use of static field elements can lead to the undesirable presence of static magnetic fields on the electron source (cathode)
and the sample and can also cause temporal distortions when transporting ultrashort electron pulses. To solve these problems,
University of Wisconsin-Madison electrical engineers have created the fastest, most responsive flexible silicon phototransistor ever made.
"A hybrid intercalation battery based on a sodium/magnesium (Na/Mg) dual salt electrolyte, metallic magnesium anode,
and a cathode based on Fes2 nanocrystals. ACS) Today, lithium-ion batteries are the storage technology of choice for many applications, from electric cars to smartphones.
inexpensive and high-energy density anode material and paired it with pyrite, which is made of iron and sulfur,
as the cathode. The electrolyte the electrically conducting component contains sodium and magnesium ions. Testing showed that the resulting devices energy density was close to that of lithium-ion batteries.
as it would do in a regular freezer, by also applying very high pressures. Water crystals can severely damage the tissue by rupturing its cells.
and Dr. Kaddour Bouazza-Marouf, Reader in Mechatronics in Medicine, said the device learns from its user,
including those on ventilators, to communicate effectively for the first time by breathing an almost effortless act which requires no speech, limb or facial movements. o
prone to breaking and susceptible to interference from electric motors and other electromagnetic devices. But a single optical fiber can contain several sensors;
artificial upper limb that will restore natural motor control and sensation in amputees. The project has brought together an interdisciplinary team of experts from government agencies
so instead early designs deflected longer wavelengths like microwaves. Cloaks have struggled also to handle many wavelengths of light at once.
Applying an electric field can send these ions streaming away from the satellite at high speeds
This electron wave creates a trailing wave-shaped electric field structure on which the electrons surf and by
The Stanford team ended up using our old friend graphene to play the cathode to aluminum's anode.
Instead of running on liquid propellant, the pumps are powered by electric motors with lithium polymer batteries. This eliminates the need for extra spaghetti tubes and valves,
and now the electric motor is about 95 percent efficient, versus the 60 percent efficiency of the gas motor.
Next, the signal from the sensor triggers a laser (or a blast of electricity or microwave energy) that heats up a section of air or water
#Plug Your Toaster Into the Sun Sunport lets you use solar power at homeithout the panels.
The process is claimed to reduce energy bills by up to 20 percent a year by enabling buildings to regulate temperature within rather than resorting to air conditioning
SQUIDS can detect minuscule magnetic fields, useful in applications ranging from medical imaging of soft tissue to oil prospecting.
Flux focusers are large areas of superconductor that improve magnetic field sensitivity and minimize parasitic fluxes.
and design of the SQUID arrays to maximize their magnetic field sensitivity.""The most exciting aspect of our result is that replacing single-SQUIDS operating at 4. 2 K with SQUID arrays operating at 77 K would be, for the first time,
to being generated mostly by electric dipole transitions (the linear push and pull of electric forces). Those two emission pathways have distinct spectra,
#Promising technique improves hydrogen production of affordable alternative to platinum Scientists have demonstrated that microwaves can help create nanostructured molybdenum disulfide (Mos2) catalysts with an improved ability to produce hydrogen.
The microwave-assisted strategy works by increasing the space, and therefore decreasing the interaction, between individual layers of Mos2 nanosheets.
"The microwave-assisted strategy could be a viable way to design advanced molybdenum disulfide catalysts for hydrogen production
Microwave-assisted synthesis is also a greener strategy when compared to conventional heating methods.""Microwave energy is more efficient than conventional heating
because it focuses its electromagnetic waves only on the material being treated and provides quicker, more even heating of a material's interior and exterior surfaces.
Conventional or surface heating is slower than microwave heating and fails to achieve the desired result
and analyzed using special filters composed of electrical and magnetic fields. The scientists used all of the decay products detected to identify the new isotope that has been created.
According to Dixon,"the rotor is suited to lower velocity, shallower waters, which are areas where you can't put conventional axial flow turbines,
with each rotor having a 25 year design life and the columns and electricity connectors 100 years.
Sato said his studies in electric car motor control systems sparked the idea for the new kind of ride."
since I was doing my masters in engineering specifically on electric car motor control systems, "he told Reuters. Sato says he is confident that Walkcar goes beyond bulkier devices such as the Segway or Toyota's Winglet."
A high enough level of doping will transform cuprates into high-temperature superconductors, and as cuprates evolve from being insulators to superconductors, they first transition through a mysterious phase known as the pseudogap,
where an additional amount of energy is required to strip electrons out of the material. For years, physicists have debated the origin of the pseudogap
and its relationship to superconductivity whether it is a necessary precursor to superconductivity or a competing phase with a distinct set of symmetry properties.
perhaps iridates will help us resolve some of the longstanding debates about the relationship between the pseudogap and high-temperature superconductivity,
The scientists create an ordered layer-like structure by applying a magnetic field during the casting process,
As long as the material remains liquid, the ceramic platelets align to the magnetic field. In the solidified material
Benjamin Tee, a recent doctoral graduate in electrical engineering; Alex Chortos, a doctoral candidate in materials science and engineering;
which are particularly effective at tunneling the signals from the electric field of nearby objects to the receiving electrode in a way that maximizes sensitivity.
According to the press release, these electrons are used then to supplement the voltage stored in the lithium-anode portion of the solar battery.
which gave rise to the very high electric field necessary to generate a long-term and dense plasma with little energy.
And if that fails, they could always just put a grape in a microwave e
where specially modified electric buses use Shaped Magnetic field In Resonance technology built into the road surface to receive a charge as they move along o
and oxygen by running an electric current through water, could be used to inexpensively power our homes
so that a magnetic field can travel'invisibly'between them. Before you get too excited, this isn't the same as the gravitational wormholes that allows humans to travel rapidly across space in science fiction TV SHOWS and films such as Stargate, Star trek,
But the physicists managed to create a tunnel that allows a magnetic field to disappear at one point
Last year they managed to create tunnels that directed magnetic fields from one place to another
because they didn't keep the magnetic field undetectable or magnetically'invisible'while it was travelling inside the tunnel.
That meant that they could make the magnetic field from a source, such as a magnet or an electromagnet, appear at the other end of the wormhole with no trace of it in between.
This created the illusion that the magnetic field must be travelling through some kind of extra dimension. Oddly enough
it also meant that an isolated magnetic monopole-a magnet with only one pole, North or South-appeared randomly at the end of the tunnel."
"The overall effect is that of a magnetic field that appears to travel from one point to another through a dimension that lies outside the conventional three dimensions."
The research will have practical applications in areas that use magnetic fields-for example, it could lead to the creation of MRI machines that don't require people to lie inside the claustrophobic machine,
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