although its electrical conductivity is the highest of any material bar none, it is nearly impossible to shut it off completely.
On the other hand, with steel electromagnets, the force goes away when you turn off the electromagnet. If you were to introduce permanent magnets into the body, by eating them for example,
your bowels would quickly be cinched together and the magnets would inexorably bore themselves directly through tissue in mutual attraction.
Thus the electric field created between the two electrodes causes the flow of these particles back and forth.
and a polymer solution on top of an indium-tin-oxide (ITO) glass ply that was used as the anode for the LED.
said Professor Pieter Abbeel of UC Berkeley Department of Electrical engineering and Computer sciences, in a statement from the university. he key is that
as well as studying how to expand this technique to other materials such as semiconductors or dielectrics, opening up the possibility of water repellent electronics.
The superconductor in this case is aluminium. Thomas Sand Jespersen an associate professor at the University of Copenhagen who helped create the material says it's a way to make a perfect transition between the nanowire and a superconductor.
Nanowires are extremely thin nanocrystal threads used in the development of new electronic components like transistors and solar cells.
"said senior author Eric Klavins, Ph d.,a UW associate professor of electrical engineering and of bioengineering. It might also enable engineered yeast to perform complicated behaviors that coordinated multicellular systems such as our immune system can accomplish,
and Nicholas J. Bolten, a UW doctoral student in electrical engineering, simply wanted to see if it could induce one yeast cell to send a signal that sets off a cascade of changes in another cell.
#New process prints electroluminescent layers directly onto three-dimensional objects Electroluminescent (EL) panels are found in many electronics applications, particularly as backlighting for LCD displays, keypads, watches,
In essence, the new technique involves printing electroluminescent layers directly onto an object without any intermediate carrier layer (the plastic material mentioned earlier.
when an electric current is applied.""By means of the innovative production process we developed together with our industry partner,
any type of three-dimensional object can be provided with electroluminescent coatings at low costs, "said Doctor Ing.
Electroluminescent panels are a very popular way to backlight a screen, particularly as they provide an even glow across their entire face,
however, the production process sees different components of the coating (specifically the electroluminescent and electrically conductive ingredients) applied using a new and unique pad printing process.
and utilizes a cheap air-breathing cathode made of liquid nickel sprayed onto one side of a regular
This is because their research shows that the periodic holes on the surface of the silver film provides excitation of surface-plasmon polaritons (electromagnetic waves that travel along the surface of a metal-dielectric
Of course, there's also a 100-240v AC-DC adapter to plug in the device when power is available.
According to the researchers, their ink retains an electrical conductivity greater than 800 S m, an order of magnitude more than previous 3d printed carbon-based materials,
According to the researchers, the vanadium flow battery works especially well with their hybrid electrode, allowing them to boost the electric current,
"the team claims that this is due to the fact that photoelectrons and holes generated in the larger bandgap of the perovskite are transferred with 80 percent efficiency to become excitons in the quantum dot nanocrystals.
using lithium iron phosphate as the cathode and graphite as the anode, he said. To scale up to this goal
like the semisolid materials that 24m forms into anodes and cathodes. hat we do is provide more line of sight paths for the lithium ions to get out of the electrode,
which 24m layers its anode and cathode materials together, with an electrolyte material in between. he electrolyte lies between the two layers,
It infused into both the cathode and the anode. That necessary for the lithium ions to get out of the back of the battery,
There plenty about how 24m gets its layers of anode cathode and electrolyte to form this perfect blend of battery performance characteristics that Chiang didn reveal in this interview.
But he did say that the startup has put together a set of methods that can allow it to be replicated in a production environment that much,
what is now done with electric currents in semiconductor integrated circuits. Researchers have developed many approaches to do this but have not yet been able to put the oldest and simplest artificial light sourcehe incandescent light bulbnto a chip.
In Karlsruhe, the methods for signal processing and automatic speech recognition have been developed and applied. n addition to the decoding of speech from brain activity
Each charging station will come with two Level 2 chargers that can charge vehicles in several hours plus one Direct current
and from that we can provide signal processing and machine learning techniques to detect gestures. f course,
whose electrical conductivity increases 200-fold when stretched. The research team is using the new fibers to make artificial muscles,
and the thin rubber layer is a dielectric, resulting in a fiber capacitor. These fiber capacitors exhibited the unrivaled capacitance change of 860 percent
including its electrical conductivity. The secret ingredient in Shah ink is a mix of biocompatible elastomer
The critical point is that IBM has integrated the optical components side-by-side with electrical circuits on a single silicon chip using sub-100nm semiconductor technology.
are believed to be the most complex superconductor integrated circuits ever successfully yielded. They are fabricated in part at D-Wave facilities in Palo alto,
it doesn run out in the same way that a battery does. he cell is made up of three layers cathode, electrolyte and anode
The company will also be releasing new printing materials in order to try its hand at printing resistors, sensors and, for future models of its printer, even lithium-ion batteries.
Krishna Shenoy, a professor of electrical engineering who studies neural prostheses at Stanford, was enthusiastic about the new prosthesis."
which run on light rather than electric current. The problem has been one of size and temperature incandescent filaments must get extremely hot before they can produce visible light.
When electric current is passed through an incandescent light bulb's filament usually made of tungsten the filament heats up and glows.
as well as the electrical conductivity of the spinal cord and nearby tissue. Additionally, unlike other non-rechargeable spinal cord stimulators, the Precision Novi is able to provide different field shapes
which can be moved out of the way by delivering an electric current. Each reservoir can be activated individually to open up depending on the applied current,
and Mark Ratner who theorized in 1974 that a molecule could act as a rectifier, a one-way conductor of electric current.
including resistors, switches, transistors, and, indeed, diodes. They have learned that it is possible to see quantum mechanical effects, such as interference, manifest in the conductance properties of molecular junctions.
The electrons at the center of the spirals are driven pretty vigorously by the laser electric field.
when heated by an electric current, the researchers could then stretch the nanowire in a controlled way.
and then a strong electric field stretches it out. The process is slow, however, and the number of nozzles per unit area is limited by the size of the pump hydraulics. The other approach is to apply a voltage between a rotating drum covered by metal cones and a collector electrode.
and the electric field causes the solution to travel to the top of the cones, where it emitted toward the electrode as a fiber.
says Reza Ghodssi, a professor of electrical engineering at the University of Maryland. Relative to other approaches, he adds,
and then a strong electric field stretches it out. The process is slow, however, and the number of nozzles per unit area is limited by the size of the pump hydraulics. The other approach is to apply a voltage between a rotating drum covered by metal cones and a collector electrode.
and the electric field causes the solution to travel to the top of the cones, where it emitted toward the electrode as a fiber.
says Reza Ghodssi, a professor of electrical engineering at the University of Maryland. Relative to other approaches, he adds,
what is now done with electric currents in semiconductor integrated circuits. Researchers have developed many approaches to do this, but have not yet been able to put the oldest and simplest artificial light sourcehe incandescent light bulbnto a chip.
and Professor Chongwu Zhou of the Ming Hsieh Department of Electrical engineering, in concert with their collaborators, is documented in a paper titled lack Arsenic-Phosphorus:
was made in the lab of Federico Capasso, the Robert L. Wallace Professor of Applied Physics and Vinton Hayes Senior Research Fellow in Electrical engineering at the Harvard John A. Paulson School of engineering and Applied science (SEAS)."
2015superconductivity Ciqus researchers obtain high-quality perovskites over large areas by a chemical method March 4th, 2015warming up the world of superconductors:
2015ultra-thin nanowires can trap electron'twisters'that disrupt superconductors February 24th, 2015simulating superconducting materials with ultracold atoms:
Rice physicists build superconductor analog, observe antiferromagnetic order February 23rd, 2015quantum Computing Forbidden quantum leaps possible with high-res spectroscopy March 2nd,
#XEI Scientific and University of Southern California announce a publication in Advanced Materials on the use of downstream plasma cleaning The research team of Associate professor Stephen Cronin is located in the Ming Hseih Department of Electrical engineering
"said Michel Maharbiz, a UC Berkeley associate professor of electrical engineering and computer sciences and head of the smart-bandage project."
allowing electrical signals to leak through, much like a resistor.""Our device is a comprehensive demonstration that tissue health in a living organism can be mapped locally using impedance spectroscopy,
"said study lead author Sarah Swisher, a Ph d. candidate in electrical engineering and computer sciences at UC Berkeley.
"##Other lead researchers on the project include Vivek Subramanian and Ana Claudia Arias, both faculty members in UC Berkeley's Department of Electrical engineering and Computer sciences;
and Yasser Khan, a UC Berkeley Ph d. student in electrical engineering and computer sciences, who fabricated the sensor array.
The distortion results from the fact that an electric charge positioned near a metallic surface will produce just such an electric field
2015iranian Scientists Apply Nanotechnology to Produce Electrical insulator March 7th, 2015new nanowire structure absorbs light efficiently: Dual-type nanowire arrays can be used in applications such as LEDS and solar cells February 25th,
2015ultra-thin nanowires can trap electron'twisters'that disrupt superconductors February 24th, 2015discoveries Quantum computing: 1 step closer with defect-free logic gate-Developing a new approach to quantum computing, based on braided quasiparticles as a logic gate to speed up computing,
along with colleagues at Aix-Marseille University in France, have discovered a high performance cathode material with great promise for use in next generation lithium-sulfur batteries that could one day be used to power
One of the major challenges for the practical application of lithium-sulfur batteries is to find cathode materials that demonstrate long-term stability.
cathode. In a paper they recently published in the chemistry journal Angewandte Chemie, Gogotsi, along with his colleagues at Aix-Marseille University explain their process for extracting the nanolaminate from a three-dimensional material called a Ti2sc MAX phase.
Currently, sulfur infiltrated carbon nanomaterials have demonstrated to be the most promising cathode materials for Li-S batteries.
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,
Article in the journal APL Materials shows how to grow Bi2pt2o7 pyrochlore, potentially a more effective cathode for future fuel cells March 10th, 2015graphene meets heat waves March 9th,
Rice physicists build superconductor analog, observe antiferromagnetic order February 23rd, 2015aerospace/Space Anousheh Ansari Wins the National Space Society's Space Pioneer Award
#Researchers snap-shot fastest observations of superconductivity yet Abstract: An international team of researchers has used infinitely short light pulses to observe ultrafast changes in the electron-level properties of superconductors, setting a new standard for temporal resolution in the field.
The scientists--from the Universit Cattolica del Sacro Cuore, the University of British columbia (UBC) and other institutions--liken the new technique to the development of high-speed film capture in the early days of photography."
like superconductivity, could revolutionize technology.#####For more information, please click herecontacts: Chris Balmawriteemail('science. ubc. ca','balma';
Here's how to see the'fastest slow process'--to understand superconductors March 9th, 2015strength in numbers:
2015ciqus researchers obtain high-quality perovskites over large areas by a chemical method March 4th, 2015warming up the world of superconductors:
Article in the journal APL Materials shows how to grow Bi2pt2o7 pyrochlore, potentially a more effective cathode for future fuel cells March 10th,
Article in the journal APL Materials shows how to grow Bi2pt2o7 pyrochlore, potentially a more effective cathode for future fuel cells March 10th,
Article in the journal APL Materials shows how to grow Bi2pt2o7 pyrochlore, potentially a more effective cathode for future fuel cells Abstract:
which could act as a more effective cathode--a fundamental electrode component of fuel cells from which positive current flows through an external circuit delivering electric power."
"The much less studied cubic pyrochlore structure is an appealing alternative to perovskites for such applications as fuel cell cathodes."
The cathode of a solid oxide fuel cell electrochemically reduces oxygen. Bi2pto7's oxygen-deficient structure makes it an ideal catalyst for the process.
2015discoveries Researchers snap-shot fastest observations of superconductivity yet March 10th, 2015the chameleon reorganizes its nanocrystals to change colors March 10th,
2015interviews/Book reviews/Essays/Reports/Podcasts/Journals/White papers Researchers snap-shot fastest observations of superconductivity yet March 10th,
March 10th, 2015energy ORNL microscopy directly images problematic lithium dendrites in batteries March 7th, 2015iranian Scientists Apply Nanotechnology to Produce Electrical insulator March 7th,
it is critical to have a large electrochemically accessible surface area, high electrical conductivity and short ion diffusion pathways.
"says study co-lead author Yu-Chih Chen, a postdoctoral researcher in Electrical engineering and Computer science at the University of Michigan College of Engineering.
and biology,"says study co-senior author Euisik Yoon, Ph d.,professor of electrical engineering and computer science and of biomedical engineering and director of the Lurie Nanofabrication Facility at the U-M College of Engineering."
With its high electrical conductivity, ability to store energy, and ultra-strong and lightweight structure, graphene has potential for many applications in electronics, energy, the environment,
including its electrical conductivity. And it's flexible and robust enough to print robust macroscopic structures.
and graphene's electrical conductivity most likely contributed to the scaffold's biological success."Cells conduct electricity inherently--especially neurons,
and Mark Ratner who theorized in 1974 that a molecule could act as a rectifier, a one-way conductor of electric current.
including resistors, switches, transistors, and, indeed, diodes. They have learned that it is possible to see quantum mechanical effects, such as interference, manifest in the conductance properties of molecular junctions.
#High-temperature superconductivity in atomically thin films: A route to developing ultimate superconducting nanodevices A research group at Tohoku University 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, led by Prof.
This finding not only provides an ideal platform for investigating the mechanism of superconductivity in the two-dimensional system,
Superconductors are regarded as one of the most promising candidates for next-generation advanced electronic devices, because the unique quantum effects in superconductors are a great advantage in achieving the energy saving
and ultrahigh-speed processing. However, 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
by using the molecular-beam-epitaxy (MBE) method*3. Then they carefully investigated the electronic structure of grown films by angle-resolved photoemission spectroscopy (ARPES)* 4 Fig. 2. In the ARPES measurement,
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,
and these particles not only serve as a cathode by corroding to protect the iron structure
The electrons at the center of the spirals are driven pretty vigorously by the laser's electric field.
In Kinsis, material scientists, chemists, physicists, biologists, electrical engineers, information scientists, food scientists and physicians work closely together.
which is demonstrated to represent a fingerprint of hot-carrier dominated thermoelectricity. The measurement scheme allows researchers to evaluate the characteristic cooling length for hot-carriers,
2015how natural channel proteins move in artificial membranes June 3rd, 2015high-temperature superconductivity in atomically thin films:
Scientists found they could prod these skyrmions to move using electric currents and an idea was born:
are tiny devices that stop the flow of electric current (off and on, 1 and 0). But there's a limit to how small we can make them,
When the scientists applied an electric current to the metal layers the stripes stretched through the channel
By running a smaller electric current through the system, they could make the skyrmions move.''These aren't exotic materials--they're widely used already in the magnetics industry,
The electric current needed to move the skyrmions is much lower than what's used in other experimental memory alternatives, like racetrack memory,
and Gary Bernard, electrical engineering professor at the University of Washington, Seattle, who are renowned experts in the study of insect physiology and ecology.
In graphene, infrared light launches ripples through the electrons at the surface of this metallike material called surface plasmon polaritons that the researchers were able to control using a simple electrical circuit.
It is known that splitting a hydrogen molecule at the anode of fuel cell using platinum is relatively easy.
splitting the oxygen molecule at the cathode of fuel cell (oxygen reduction reaction(,ORR)) is more difficult
An electrolyte or membrane is used to separate oxygen gas at the cathode region from hydrogen gas in the anodic region,
while ions can still migrate from the anode to the cathode. The electrolyte plays a key role.
It must permit only the appropriate ions to pass between the anode and cathode. If free electrons or other substances could travel through the electrolyte,
such as increasing catalytic activity, reducing cathode flooding and eliminating the need for external humidification equipment. However, at higher temperatures, current electrolyte that is used in PEMFC dehydrate (becomes very dry),
Jlich researchers develop ultrahigh-resolution 3-D microscopy technique for electric fields July 7th, 2015new Biosensor Produced in Iran to Detect Effective Drugs in Cancer Treatment July 4th,
They also want to evaluate how this characteristic may affect other properties, such as electrical conductivity and thermal transport.
In addition, Yu envisions simply letting the resonator emit that energy in the form of infrared light toward the sky,
Researchers are first to demonstrate electroluminescence from multilayer molybdenum disulfide Over the last decade, advances in the technology of light-emitting diodes,
A new study by researchers from the California Nanosystems Institute at UCLA is the first demonstration of electroluminescence from multilayer molybdenum disulfide,
when electric current is run through it or when it is shot with a nondestructive laser. Multilayer molybdenum disulfide, by contrast, is easier and less expensive to produce,
it was rather surprising for us to discover that similar vertical devices made of multilayer Mos2 somehow showed very strong electroluminescence,
Duan and his team used a technique called electric field-induced enhancement, which relocates the electrons from a dark state to a luminescent state,
and an interconnection material linking semiconductor devices to form the desired electrical circuits, "said Kim.""This renders high processing temperature undesirable,
because they can be used to create devices that produce direct current or to drive chemical reactions on otherwise inert metal surfaces.
whose electrical conductivity increases 200-fold when stretched. The research team is using the new fibers to make artificial muscles,
and the thin rubber layer is a dielectric, resulting in a fiber capacitor. These fiber capacitors exhibited a capacitance change of 860 percent
SQUID is a high-sensitivity magnetic sensor based on the superconductivity phenomenon. In the process, a strong magnetic field is applied to food to magnetize the metal fragments inside,
In 1974, molecular electronics pioneers Mark Ratner and Arieh Aviram theorized that an asymmetric molecule could act as a rectifier, a one-way conductor of electric current.
A typical diode consists of a silicon p-n junction between a pair of electrodes (anode and cathode) that serves as the"valve"of an electrical circuit,
directing the flow of current by allowing it to pass through in only one"forward"direction.
Dielectric materials can provide fast charge and discharge response, high energy storage, and power conditioning for defense, medical and commercial applications.
But it has been challenging to find a single dielectric material able to maximize permittivity, breakdown strength, energy density and energy extraction efficiency.
The hybrid sol-gel materials had shown potential for efficient dielectric energy storage because of their high orientational polarization under an electric field,
and in our bilayer dielectric, the n-octylphosphonic acid groups are inserted between the sol-gel layer
when we apply an electric field is that the polarization response -which measures how much the polar groups line up in a stable way with the field-behaves in a linear way,
"This is what you want to see in a capacitor dielectric material.""The next step will be to scale up the materials to see if the attractive properties transfer to larger devices.
"The simplicity of fully solution-based processes for our dielectric material system provides potential for facile scale up and fabrication on flexible platforms,
"This work emphasizes the importance of controlling the electrode-dielectric interface to maximize the performance of dielectric materials for energy storage application
"says study co-lead author Yu-Chih Chen, a postdoctoral researcher in Electrical engineering and Computer science at the University of Michigan College of Engineering.
and biology,"says study co-senior author Euisik Yoon, Ph d.,professor of electrical engineering and computer science and of biomedical engineering and director of the Lurie Nanofabrication Facility at the U-M College of Engineering."
which improves the electrical conductivity of the laminate. Image: Xianjun Huang, et al.//University of Manchester) The study demonstrates that printable graphene is now ready for commercial use in low-cost radio frequency applications,
With its high electrical conductivity, ability to store energy, and ultra-strong and lightweight structure, graphene has potential for many applications in electronics, energy, the environment,
including its electrical conductivity. And it's flexible and robust enough to print robust macroscopic structures.
and graphene's electrical conductivity most likely contributed to the scaffold's biological success."Cells conduct electricity inherently--especially neurons,
"said Qiaoqiang Gan, UB assistant professor of electrical engineering and the study's lead author. Additional authors of the study are:
UB Phd candidates in electrical engineering Nan Zhang, Kai Liu, Haomin Song, Xie Zeng, Dengxin Ji and Alec Cheney;
"An interferogram showing the photoelectron energy vs. delay time between identical femtosecond pump and probe pulses,
The interferogram is taken from a movie of photoelectron energy vs. momentum with one frame corresponding to a 50-attosecond delay.
The oscillations in the intensity of photoelectron signal for emission normal to the surface show how long light is trapped in the form of excitonic polarization during the coherent nonlinear interaction with the silver surface.
The electrons at the center of the spirals are driven pretty vigorously by the lasers electric field.
Overtext Web Module V3.0 Alpha
Copyright Semantic-Knowledge, 1994-2011