ISEM is the program leader for electrification and plays crucial role for design of next generation electric vehicles A key to unlocking the electric vehicle capability is a lightweight and powerful battery pack. ur simple fabrication method of eco-friendly materials
Doping the zinc oxide causes it to behave like a metal at certain wavelengths and like a dielectric at other wavelengths.
the addition of boron and nitrogen to graphenes carbon to connote the conductivity necessary to produce an electrical insulator.
reportedly harvests the electromagnetic radiation transferring to and from mobile phones and converts it into direct current (DC) electrical energy,
Selective biosensors transduce chemical signals into an electric current, which regulates electrophoretic delivery of chemical substances without necessitating liquid flow.
and aligned beautifully with the Earth magnetic field lines, like aurorae. e realised we may be onto something big.
They flow in these tubular structures that are aligned with the Earth magnetic field. And they can then move of their own accord.
scissors and to switch on a blender to make a smoothie. Most importantly to him, he was able to smoothly pick up a beer
The energy of the radio waves the router sent out was converted into direct current voltage with a component called a rectifier,
but we didn't have the delicate touch required to control magnetic fields precisely enough to levitate smaller objects."
The electrical engineers used their frequency comb to synchronize the frequency variations of the different streams of optical information,
first author on the paper and a UCSD electrical engineering Phd student. he frequency comb ensured that the system did not accumulate the random distortions that make it impossible to reassemble the original content at the receiver. he laboratory experiments involved setups with both three and five optical channels,
Called Q-Eye, the invention senses radiation across the terahertz (THZ) region of the spectrum between microwaves and infrared.
an associate professor in the campus electrical engineering and computer sciences department, developed the new algorithm. Abbeel said the best thing about the technique is that it rids the need of reprogramming
After carrying out a lot of research, Prakash has built a rotating magnetic field to coordinate with the flow of droplets in a timely manner and acts as a clock."
and refrigerators--to the Internet so they can work in concert with one another and be controlled remotely
they were able to create a 3d electrical circuit. Found in the cell walls of plants and algae or secreted by bacteria,
which they will swipe at a water dispenser just like a Westerner getting cash from an ATM MACHINE.
Current water dispensers are charging one Kenyan shilling (about half a cent U s.)for 20 liters of fresh water,
Because of the advanced tech inherent with the water dispenser machines, the water is not only cheaper, but safer to Drink up until now,
Two different metals, a anode and a cathode are submerged into different solutions and are connected by a salt bridge to form a reaction,
"So the way thermoelectric generators work is you have a hot plate and a cold plate and you smash these generators together
or a smartphone is infinitely greater than a vacuum cleaner and they only need tiny little bits of energy,
including resistors, switches, transistors, and, indeed, diodes. They have learned that it is possible to see quantum mechanical effects
Liquid nitrogen cooled superconductors and permanent magnets combine to allow Lexus to create the impossible. Now, Lexus, your hoverboard is really cool, but"impossible"?
Lexus is taking advantage of key properties of materials called superconductors. As you might expect,
When superconductors are cooled below a certain temperature, their electrons buddy up and move through the material without encountering any sort of resistance.
More specifically, Lexus'use of liquid nitrogenhich has a temperature of-321 degrees Fahrenheitells us that they're using a high-temperature superconductor like yttrium barium copper oxide,
Lexus'superconductor probably starts working at about-292 degrees Fahrenheit, which sounds unfathomably cold. However, this temperature is actually quite warm by superconductor standards.
The first superconductor ever discovered, in 1911, had to be cooled down to-452 degrees Fahrenheit, only a few degrees warmer than absolute zero, the coldest possible temperature.
So how did Lexus float its high-temperature superconductors? By playing a magnetic trick on them.
When a high-temperature superconductor is too warm to work, magnetic fields can pass right through it without a problem.
But if you then cool the superconductor down so that it starts working, it gets"stuck"on the magnetic field lines that were passing through it,
as if it were caught in a magnetic spiderweb. In other words, superconductors"freeze the flux lines of the field,
"says Steve Gourlay, the head of the Lawrence Berkeley National Lab's Superconducting Magnet Group, leaving the superconductor embedded in the magnetic field at that particular location.
A cross-section of a high-temperature superconductor (blue rectangle)" embedded"in a magnetic field (black lines. The magnetic channels through the superconductor are called"quantum vortices."
"How cool is that?(Wikimedia Commons) To levitate the superconductor, all you need to do is embed the superconductor in the magnetic field a couple of inches above some kind of magnetic surface.
If you tried to move the superconductor, you'd kickstart circular eddies of electrical current on the superconductor's surface,
spawning miniature magnetic fields that work to the superconductor in place. These eddy currents even oppose gravity,
pushing off of the surface's magnetic field to keep the superconductor floating in midair. In normal conducting material such as copper,
which resists the flow of electricity, those eddies would weaken. The lack of electrical resistance in superconductors means that once an eddy current starts
nothing can sap its strength. As long as you keep the superconductor cold, it'll stay floating above a magnet,
its eddy currents fighting gravity to a Draw in short, Lexus has come up with a cool way to use superconductors to levitate a hoverboard and its rider, an impressive achievement,
if true--Lexus hasn't provided video of someone riding the board. But by now, you've probably noticed a theme:
levitation happens when the superconductor interacts with an outside magnetic field. And this is where Lexus is giving us a little movie magic.
If the superconductors are in the hoverboard, then we need an outside magnetic field for the hoverboard to coast on.
This is where Lexus'"permanent magnets"come in. Gourlay suspects that Lexus laid down a bunch of very strong rare-earth magnets underneath the"sidewalk,
"setting up a magnetic field powerful enough to support both board and, Lexus promises, a rider.
In fact, Gizmodo reports that the hoverboard only works on"special metallic surfaces.""This sort of setup is probably too expensive for your everyday skate park.
Rare-earth magnets"can be, oh, I don't know, $100 a kilogram?""Gourlay said.""It isn't cheap."
"So unless you plan on covering your driveway with thousands of dollars'worth of magnets,
this cleverly made hoverboard wouldn't even get you out of your garage. Even so, Gourlay is intrigued by the prospect of using superconductorshich are used in everything from maglev trains to the Large Hadron Collidern something like a hoverboard."
"I couldn't ride it without breaking my neck, "he said, "but that would be kind of cool."
We made the discovery by applying a magnetic field and looking for undulations in sample properties such as the resistance
when we placed a small sample of the insulating material on a cantilever in a magnetic field,
But then they came up with the idea of a rotating magnetic field. very time the field flips,
when it's exposed to a magnetic field. Known as giant magnetoresistance, this property is crucial to achieving the large storage capacity we've come to enjoy in our hard drives,
When materials with giant magnetoresistance are exposed to a magnetic field, they significantly alter their electronic resistance.
The material has such incredible magnetoresistance because of another interesting property-its electrons are superfast, with a top speed of around 300 km/s. In a magnetic field,
which causes an increasing percentage of electrons to flow in the'wrong'direction as the magnetic field becomes stronger."
"The faster the electrons in the material move, the greater the Lorentz force and thus the effect of a magnetic field,"explains Binghai Yan, one of the lead researchers from the Max Planck Institute for Chemical Physics of Solids
and a microwave Carbon nanoparticles can be incredibly useful in the treatment of many types of disease,
using a process that involves plain old honey and a microwave. The resulting particles are less than 8 nanometres thick (a human hair is around 80,000-100,000 nanometres)
"If you have a microwave and honey or molasses, you can pretty much make these particles at home,
the microwave-produced nanoparticles are effective in delivering the drugs where they're needed, and vibrational spectroscopic techniques were used to monitor how the polymers gradually released their payload.
so in the future you might not have to hunt around for your charging adapter every evening.
fabricated and tested by a team of Penn State electrical engineers that can provide exceptional capabilities for manipulating light.
which consists of a periodic array of strongly coupled nanorod resonators, could improve systems that perform optical characterization in scientific devices, such as ellipsometers;
a postdoctoral fellow in electrical engineering and lead author of a recent paper in Scientific Reports explaining their invention."
Co-authors include Seokho Yun, a former postdoctoral scholar in the Penn State Electrical engineering Department, Douglas H. Werner, John L. and Genevieve H. Mccain Chair Professor of Electrical engineering
, Zhiwen Liu, associate professor of electrical engineering, and Theresa Mayer, Distinguished Professor of Electrical engineering. The paper is titled"Broadband and Wide field-of-view Plasmonic Metasurface-enabled Waveplates."
"This work was supported by the National Science Foundation through Penn State's Center for Nanoscale Science e
But existing electroporation methods require high electric field strengths and for cells to be suspended in solution,
Researchers are using the glass as a cathode material as recently reported in Scientific Reports a journal from the publishers of Nature.
In crystalline form vanadium pentoxide can take three positively charged lithium ions--three times more than materials presently used in cathodes such as lithium iron phosphate.
To produce the cathode material Afyon and his colleagues blended powdered vanadium pentoxide with borate compounds.
Afyon used this vanadate-borate glass powder for the battery cathodes which he then placed in prototypes for coin cell batteries to undergo numerous charge/discharge cycles.
Thus we have invented a way to make a perfect transition between the nanowire and a superconductor.
The superconductor in this case is aluminium. There is great potential in this, "says Associate professor Thomas Sand Jespersen,
or something blocking the object that causes a systematic error in the detector says Lawson Wong a graduate student in electrical engineering
and then bring them together explains Faraz Najafi a graduate student in electrical engineering and computer science at MIT and first author on the new paper.
or hundreds of photonic qubits it becomes unwieldy to do this using traditional optical components says Dirk Englund the Jamieson Career development Assistant professor in Electrical engineering and Computer science at MIT and corresponding author on the new paper.
which is led by Karl Berggren an associate professor of electrical engineering and computer science and of which Najafi is a member.
which they deposit the superconductor niobium nitride in a pattern useful for photon detection. At both ends of the resulting detector they deposit gold electrodes.
"Potential applications range from battery anodes, to solar cells, to 3d electronic circuits and biomedical devices.""The 3d transformation process involves a balance between the forces of adhesion to the substrate and the strain energies of the bent,
including semiconductors, conductors and dielectrics.""""This work establishes the concepts and a framework of understanding.
while still ensuring optimal electrical conductivity. Finally, a fluidic microchannel enables the delivery of pharmacological substances--neurotransmitters in this case--that will reanimate the nerve cells beneath the injured tissue.
After writing a quantum state onto the nuclear spin of the europium using laser light the team subjected the crystal to a combination of a fixed and oscillating magnetic fields to preserve the fragile quantum information.
#Preventing transformer explosions Transformer failures have cost human lives when things have gone seriously wrong says Hkon Nordhagen a materials specialist at SINTEF in Trondheim Norway the largest independent research organisation in Scandinavia.
Large oil filled transformers are found in all power and switching stations as well as in many large buildings.
Today transformers are installed in stiff steel tanks. The risk of explosions can be reduced if the industry changes to soft housings that absorb energy in the same way as modern car bodies he says.
The idea of using automotive industry technology in transformer housings has led to a pilot project in which SINTEF's materials and electricity experts are collaborating.
All large transformers use oil for insulation and cooling as this greatly reduces energy losses and improves reliability compared to dry type transformers.
The increasing focus on energy efficiency actions might also enforce a substitution of many smaller dry isolated transformers with oil filled transformers.
Statistics suggest that internal failure will occur on average in about 15 of Norway's 3000 transformers every year.
The arc which occurs in such situations makes the oil evaporate and form combustible gasses.
and extremely rapid pressure build up in the transformer tank. If the tank ruptures combustible gases will leak out.
and any combustible materials in the vicinity of the transformer can catch fire. The fire may also be fed with oil from the tank.
#Transformers are equipped with relay protection that disconnect them from the grid within a few power cycles
#Additionally transformer tanks are reinforced by means of welded steel beams in order to make them withstand pressure rises
On one hand the transformer tanks are able to withstand more pressure than they could have done without the reinforcement on the other the extra stiffness means that they cannot expand
when the electric arc is burning causing the pressure in the oil and gas to rise dramatically.
Our idea is to design transformer tanks in such a way that they expand when their internal pressure increases without risking that major rises in tension
If such an expansion is allowed there will be more time available for the transformer to be disconnected from the grid before rupture occurs.
The aim of the recently launched transformer safety pilot project is to pave the way for a large-scale competence-building main project.
With better knowledge and new mathematical models we will be able to observe the relationships between the physics of electric arcs the transformer tank and the electrical protection system.
As you're reading the front of the queue the whole front of the queue will be in your cache says Justin Kopinsky an MIT graduate student in electrical engineering
and add an ecological washing machine for plastics that uses a special biodetergent which will reduce the cost of operation even more.
After the competition the two companies started talking and joined efforts with the aim of integrating the ecological washing machine system using degradable plastic substances in less than 28 days without affecting the environment hence replacing lye
This method uses magnetic fields to break the time-reversal symmetry with certain specialized garnet and ferrite materials.
Magnetic fields are also sources of interference in many applications such as cold atom microsystems. These constraints have deterred availability of Faraday effect isolators for on-chip optical systems till date.
Moreover their method enables this value to be tuned through the application of an electric field meaning graphene circuit elements made in this way could one day be rewired dynamically without physically altering the device.
Applying an electric field pulse can change the sign of the surface charges. That's an unstable situation Rappe said in that the positively charged surface will want to accumulate negative charges and vice versa.
You could come along with a tip that produces a certain electric field and just by putting it near the oxide you could change its polarity Martin said.
and his team took ordinary dust from a vacuum cleaner and dumped it onto the treated surface.
or dielectrics opening up the possibility of water repellent electronics. Funding was provided by the Bill & Melinda Gates Foundation and the United states Air force Office of Scientific research h
#High-temperature superconductivity in atomically thin films A research group has succeeded in fabricating an atomically thin,
high-temperature superconductor film with a superconducting transition temperature (Tc) of up to 60 K(-213°C). The team also established the method to control/tune the Tc.
This finding not only provides an ideal platform for investigating the mechanism of superconductivity in the two-dimensional system,
because the unique quantum effects in superconductors are a great advantage in achieving the energy saving
the device application of superconductors has long been hindered. The largest obstacle is the necessity of a huge and expensive cooling system with liquid helium, because of the low Tc of conventional superconductors,
which is close to absolute zero (0 K, --273°C)* 1. It has also been a big challenge to realize the high-density integration of superconductors into electronic devices.
In order to overcome these problems, it is definitely necessary to develop a new superconductor with higher-Tc,
that can be fabricated into a thin film. The research team at Tohoku University turned its attention to iron selenide (Fese
which is a member of iron-based superconductors*2 . While the Tc of bulk Fese is only 8 K(-265°C a signature of higher-Tc superconductivity has been suggested in ultrathin film
and its verification has been required urgently. The researchers at first fabricated high-quality, atomically thin Fese films Fig. 1, with thickness of between one monolayer (which corresponds to three-atoms thickness) and twenty monolayers (sixty-atoms thickness),
which is direct evidence of the emergence of superconductivity in the films. The researchers found that the Tc estimated from the gap-closing in a monolayer film is surprisingly high (above 60 K),
While multilayer films do not show superconductivity in the as-grown state, the researchers have discovered a novel method to deposit alkali atoms onto the films
the researchers have succeeded in converting non-superconducting multilayer Fese films into high-Tc superconductors with Tc as high as 50 K. The present result gives a great impact to both the basic
and applied researches in superconductors. The researchers have shown clearly how the superconductivity is emerged, enhanced and controlled in atomically thin Fese films.
While the Tc achieved in this study (50-60 K) is still lower than that of the cuprate high-Tc superconductors (highest Tc?
135 K) which caused the"high-Tc fever"in the world 30 years ago, it obviously exceeds the record of other"high-Tc superconductors"such as fullerene (C60) superconductors (Tc 33 K) and Mgb2 (Tc 39k),
closely approaching the temperature of liquid nitrogen (77 K). The present report would lead to intensive researches to further increase Tc by changing the number of atomic layers, the amount of doped electrons and the species of substrate.
and applied researches on superconductivity, because the Tc of 50-60 K achieved in the present study is high enough to keep the superconducting state by using a closed-cycle-gas-type cooling system without liquid helium.
The present success in fabricating an atomically thin high-temperature superconductor not only provides an ideal platform to investigate the novel two-dimensional superconductivity,
The ultrathin high-Tc superconductor would effectively contribute to the significant downsizing and consequent high-density integration in electric circuits,
or between people working in tandem on chores like loading a dishwasher, or navigating a room packed with people."
and enables the manipulation of nanomagnets with spin currents rather than magnetic fields, "explained Gyung-Min Choi,
Eventually, Prakash decided to build a rotating magnetic field that could act as clock to synchronize all the droplets.
Prakash realized that a rotating magnetic field might do the trick. Katsikis and Prakash built arrays of tiny iron bars on glass slides that look something like a Pac-Man maze.
Next, they turned on the magnetic field. Every time the field flips, the polarity of the bars reverses, drawing the magnetized droplets in a new, predetermined direction, like slot cars on a track.
Combined with the fact that the magnetic field can control millions of droplets simultaneously this makes the system exceptionally scalable."
uses an inexpensive air-breathing cathode created with nickel sprayed onto one side of ordinary office paper.
The anode is screen printed with carbon paints creating a hydrophilic zone with wax boundaries.
Coupled with the unique properties of hard x-rays, namely penetration of complex environments and operation in electric and magnetic fields, such optics will enable highest-resolution imaging of systems under in-situ and in-operando conditions,
Seunghyup Yoo (Electrical engineering) have succeeded in developing LEDS based on graphene quantum dots. Highly pure GQDS were synthesized by an environmentally-friendly method designed by Prof.
"says Datta, a coauthor on the paper and Penn State professor of electrical engineering.""Resonant tunneling diodes with NDR can be used to build high frequency oscillators.
when the material is exposed to a magnetic field. This giant magnetoresistance, which is responsible for the large storage capacity of modern hard discs,
Modern hard discs utilize this phenomenon to significantly alter the resistance of a material by exposing it to a magnetic field.
The resistance of niobium phosphide changes so dramatically in a magnetic field, because the charge carriers are deflected by a phenomenon known as the Lorentz force.
This force causes an increasing percentage of electrons to start flowing in the"wrong"direction as the magnetic field is ramped up,
the greater the Lorentz force and thus the effect of a magnetic field,"explains Binghai Yan, a researcher at the Max Planck Institute for Chemical Physics of Solids in Dresden.
For their investigations, the scientists used the Dresden High Magnetic field Laboratory, as well as the High-Field magnet Laboratory at Radboud University in Nijmegen, Netherlands,
said Zhifeng Ren, principal investigator at the Texas Center for Superconductivity at UH (Tcsuh.""This is a form for the quick screening of materials,
so the catalyst has very good electrical conductivity and stability.''Wang used electrochemical tuning--putting lithium in, taking lithium out to test the catalytic potential of several metal oxides.'
size, and structure to facilitate desired interactions with light, electrical or magnetic fields, or chemical environment to provide unique functionality in a wide range of applications from energy to medicine.
temperature, chemicals, electric field or magnetic field. These various stimuli can be used to make the materials change colour,
we can create electric fields that attract and move around droplets containing any chemical solution, "says first author Alphonsus Ng who recently graduated with a Phd from the U of T Institute of Biomaterials and Biomedical engineering (IBBME) and Donnelly Centre,
"Our approach is to trap the probe light used for imaging inside of an optical resonator,
Because of the resonator, the signal gets enhanced by a factor of 50000.""In the microscope, built by Dr. David Hunger and his team,
one side of the resonator is made of a plane mirror that serves at the same time as a carrier for the nanoparticles under investigation.
Laser light is coupled into the resonator through this fibre. The plane mirror is moved point by point with respect to the fibre
which a magnetic field induces a Lorentz force on moving electric charge carriers, leading to deflection and a measurable Hall voltage.
and a CMOS wafer that contains the signal processing circuitry, "explained Horsley.""These wafers are bonded together,
They have demonstrated the feasibility of making microwave biodegradable thin-film transistors from a transparent, flexible biodegradable substrate made from inexpensive wood, called cellulose nanofibrillated fiber (CNF).
the biodegradable transistor needed to be able to operate at microwave frequencies, which is the working range of most wireless devices.
which finally showed the biodegradable transistor has superior microwave-frequency operation capabilities comparable to existing semiconductor transistors."
#New method of quantum entanglement packs vastly more data in a photon A team of researchers led by UCLA electrical engineers has demonstrated a new way to harness light particles,
a UCLA associate professor of electrical engineering who was the research project's principal investigator. Researchers from MIT
The idea was to take a Cooper pair--a pair of electrons that allows electricity to flow freely in superconductors
while tunneling--a quantum phenomenon--across a junction between two superconductor leads, to pass through two separate"quantum dots"--small crystals that have quantum properties."
Commercially available electric heating pads are sufficient for applying heat to an injured area but their cords need to be attached to an A c outlet to work.
#Faster detection of hidden objects by terahertz sensor Called'Q-Eye',the invention senses radiation across the spectrum between microwaves and infrared, known as the Terahertz (THZ) region of the spectrum
Arraythe research team used the Dipole Coil Resonance System (DCRS) to induce magnetic fields, which was developed by the team in 2014 for inductive power transfer over an extended distance.
in order to generate rotating magnetic fields, which was embedded in the Tx's flat platform. This has made it possible for mobile devices to receive power from any direction.
In addition, the DCRS works at a low magnetic field environment. Based on the magnetic flux shielding technology developed by the research team,
Signal processing in the intracellular domain of the precursor-protein-producing cells is responsible for modifications that likely induce a relative positional change of the dimerization partners and
the intracellular signal processing for single precursor proteins may be inhibited in order to specifically knock out the growth factors required by individual cancer types s
In addition, Yu envisions simply letting the resonator emit that energy in the form of infrared light toward the sky,
This is not the kind of magnet one would stick to a refrigerator. Magnetic order only appears in Tiau
They also allow for handy things like electrical conductivity in metals. Atomic moments in local-moment ferromagnets--that is, common magnetic materials--align all of their spins in the same direction.
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