Currently plasmonic absorbers used in biosensors have a resonant bandwidth of 50 nanometers said Koray Aydin assistant professor of electrical engineering and computer science at Northwestern University's Mccormick School of engineering and Applied science.
3-D nanomagnetic logic Electrical engineers at the Technical University Munich (TUM) have demonstrated a new kind of building block for digital integrated circuits.
Their magnetic fields can be thought of as being coupled into one, and the"north-south"polarity of the magnet that is free to flip will be determined by the orientation of the majority of fixed magnets.
#Nanotube cathode beats large pricey laser Scientists are a step closer to building an intense electron beam source without a laser.
Using the High-Brightness Electron Source Lab at DOE's Fermi National Accelerator Laboratory a team led by scientist Luigi Faillace of Radiabeam Technologies is testing a carbon nanotube cathode about the size of a nickel
Tests with the nanotube cathode have produced beam currents a thousand to a million times greater than the one generated with a large pricey laser system.
While carbon nanotube cathodes have been studied extensively in academia Fermilab is the first facility to test the technology within a full-scale setting.
Fermilab was sought out to test the experimental cathode because of its capability and expertise for handling intense electron beams one of relatively few labs that can support this project.
The new cathode appears at first glance like a smooth black button but at the nanoscale it resembles in Piot's words millions of lightning rods.
When a strong electric field is applied it pulls streams of electrons off the surface of the cathode creating the electron beam.
The exceptional strength of carbon nanotubes prevents the cathode from being destroyed. Traditionally accelerator scientists use lasers to strike cathodes
in order to eject electrons through photoemission. The electric and magnetic fields of the particle accelerator then organize the electrons into a beam.
The tested nanotube cathode requires no laser: it only needs the electric field already generated by an accelerator to siphon the electrons off a process dubbed field emission n
#Nanoengineering enhances charge transport promises more efficient future solar cells Solar cells based on semiconducting composite plastics and carbon nanotubes is one of the most promising novel technology for producing inexpensive printed solar cells.
Physicists at Umeå University have discovered that one can reduce the number of carbon nanotubes in the device by more than 100 times
and the nanotubes have outstanding electrical conductivity, and they can effectively separate and transport electrical charges generated from solar energy.
The material is a two-dimensional metallic dielectric photonic crystal and has the additional benefits of absorbing sunlight from a wide range of angles
which then causes the material to glow emitting light that can in turn be converted to an electric current.
No one had tried putting a dielectric material inside so we tried that and saw some interesting properties.
Semiconducting materials exhibit mid-range electrical conductivity. When semiconducting materials are subjected to an input of a specific energy bound electrons can be moved to higher energy conducting states.
and as a replacement for carbon in the cathodes of lithium batteries. Another potential application comes from the fact that silicon crystals at dimensions of 5 nanometers
#Magnetic field opens and closes nanovesicle Chemists and physicists of Radboud University managed to open and close nanovesicles using a magnet.
Because the strength of the magnetic field is linked precisely to the size of the vesicles the deformation can be controlled more easily.
without the magnetic field the vesicles close and they open when the field is turned on. After switching the field off they return to a closed state.
if we could steer these rockets with magnetic fields but to our surprise the vesicles opened during those experiments.
We also hope to find materials for which the same effect occurs in a lower magnetic field-that of an MRI.
and reliability of Gan micro-rod LEDS fabricated on graphene to the test they found that the resulting flexible LEDS showed intense electroluminescence (EL)
and were concentrating on the speed of electrical conduction through the patch. We thought nanotubes could be integrated easily.
Biocompatible Carbon nanotube#Chitosan Cardiac Scaffold Matching the Electrical conductivity of the Heart. Seokwon Pok Flavia Vitale Shannon L. Eichmann Omar M. Benavides Matteo Pasquali and Jeffrey G Jacot ACS Nano Just Accepted Manuscript DOI:
#Engineers show light can play seesaw at the nanoscale University of Minnesota electrical engineering researchers have developed a unique nanoscale device that for the first time demonstrates mechanical transportation of light.
or out of the samarium nickelate when an electric field is applied, regardless of temperature, so the device can be operated in the same conditions as conventional electronics.
"Just by applying an electric field, you're dynamically controlling how light interacts with this material."
and systems that will transform signal processing and computation. Ramanathan compares the current state of quantum materials research to the 1950s,
In these highly efficient devices individual molecules would take on the roles currently played by comparatively-bulky wires resistors and transistors.
and rate performances of Li-S batteries for practical application with the N-ACNT/G hybrids as cathode materials. said Prof.
and low frequencies fall between microwaves and infrared waves. The light in these terahertz wavelengths can pass through materials that we normally think of as opaque such as skin plastics clothing and cardboard.
The key according to UCSB professor of electrical and computer engineering Kaustav Banerjee who led this research is Mos2's band gap the characteristic of a material that determines its electrical conductivity.
Graphene has been used among other things to design FETSEVICES that regulate the flow of electrons through a channel via a vertical electric field directed into the channel by a terminal called a gate.
While one-dimensional materials such as carbon nanotubes and nanowires also allow excellent electrostatics and at the same time possess band gap they are not suitable for low-cost mass production due to their process complexities she said.
or small proteins still maintaining good electrostatics which can lead to high sensitivity even for detection of single quanta of these biomolecular species she added.
great electrostatics due to their ultra-thin body scalability (due to large band gap) as well as patternability due to their planar nature that is essential for high-volume manufacturing said Banerjee.
This color filtering is done commonly using off-chip dielectric or dye color filters which degrade under exposure to sunlight
#Scientists fabricate defect-free graphene set record reversible capacity for Co3o4 anode in Li-ion batteries Graphene has already been demonstrated to be useful in Li-ion batteries,
Wrapping a large sheet of negatively charged df-G around a positively charged Co3o4 creates a very promising anode for high-performance Li-ion batteries.
The researchers demonstrated that wrapping a large-sized negatively charged sheet of df-G around a positively charged piece of Co3o4 creates an anode with several impressive characteristics.
with its perfect crystallinity, improves the anode performance because when a single graphene sheet is wrapped around a bundle of Co3o4 particles,
and then electrically detaching from the anode, which would otherwise occur. Because of this protective effect, the anode's capacity is preserved even after 200 cycles,
whereas anodes with an imperfect graphene layer rapidly decrease with cycling. The large size of the graphene plays a key role in the performance
because a larger size provides a higher cycling stability of the nanosized anode materials by improving their mechanical integrity.
With these advantages, the researchers expect the df-G to bring significant advances of composite electrodes for a variety of electrochemical system,
It was Bag who put similar sized and charged nanoparticles together to form a building block then used an artist's airbrush to spray layers of electrical circuits atop each other to create a solar-powered device.
The particles are collected in a magnetic field undeposited contaminants are washed away and the purified antibodies recovered by removing the polyethylene glycol.
A high-performance EC electrode must have high electrical conductivity, a high ion-accessible surface area, a high ionic transport rate and high electrochemical stability.
The electrode demonstrates superior electrical conductivity, exceptional mechanical flexibility and unique hierarchical porosity, ensuring the efficient transport of electrons
Carbon is the most popular material that supercapacitors are composed of due to its low cost high surface area high electrical conductivity and long term stability.
because graphene droplets change their structure in response to the presence of an external magnetic field,
what happens in lithium iron phosphate-a material commonly used in the cathode, or positive electrode, of electrical vehicle batteries-as the battery charged."
and monitor the phase transformation that takes place in the cathode as lithium ions move from the cathode to the anode,
Getting as many lithium ions as possible to move from cathode to anode through this process,
The scientists were able to control the motion of the propellers using a relatively weak rotating magnetic field.
alternative chemical material by demonstrating performance comparable to that of the expensive platinum catalyst used for the cathode of fuel cell batteries.
environmentally friendly way to produce high performance lithium ion battery anodes,"said Zachary Favors, a graduate student working with Cengiz and Mihri Ozkan, both engineering professors at UC Riverside.
He is focused on the anode or negative side of the battery. Graphite is the current standard material for the anode,
but as electronics have become more powerful graphite's ability to be improved has been tapped virtually out.
#Bacterial nanometric amorphous Fe-based oxide as lithium-ion battery anode material Leptothrix ochracea is a species of iron-oxidizing bacteria that exists in natural hydrospheres where groundwater outwells worldwide.
but Jun Takada and colleagues at Okayama University discovered unexpected industrial functions of L-BIOX such as a great potential as an anode material in lithium-ion battery.
Results showed that L-BIOX exhibited a high potential as an Fe3+/Fe0conversion anode material. Its capacity was significantly higher than the conventional carbon materials.
A Potential Lithium-Ion Battery Anode Material. Hideki Hashimoto Genki Kobayashi Ryo Sakuma Tatsuo Fujii Naoaki Hayashi Tomoko Suzuki Ryoji Kanno Mikio Takano and Jun Takada.
The magnetic properties of the nanoparticles also mean they can be localized with an external magnetic field;
when they exposed it to an electric field. The metal layer was encased in the dielectric material silicon dioxide
which is used commonly in the semiconductor industry to help route electricity. They observed the metal atoms becoming charged ions, clustering with up to thousands of others into metal nanoparticles,
and forming a bridge between the electrodes at the opposite ends of the dielectric material. They demonstrated this process with several metals,
And depending on the materials involved and the electric current, the bridge formed in different ways. The bridge, also called a conducting filament,
Further, the electric field can be used to change the shape and size of the filament, or break the filament altogether,
For instance, removing oxygen from the graphene oxide fiber results in a fiber with high electrical conductivity. Adding silver nanorods to the graphene film would increase the conductivity to the same as copper,
Electrical engineering professor Dr. Chongwu Zhou and USC Viterbi graduate students Haitian Chen Yu Cao, and Jialu Zhang developed this energy-efficient circuit by integrating carbon nanotube (CNT) thin film transistors (TFT) with thin film transistors comprised of indium, gallium and zinc oxide (IGZO)."
"said Dr. Chongwu Zhou, professor in USC Viterbi's Ming Hsieh Department of Electrical engineering.""Before then, we were working hard to try to turn carbon nanotubes into n-type transistors and then one day,
research assistant and electrical engineering Phd student at USC Viterbi.""This gives us further proof that we can make larger integrations
#Charging portable electronics in 10 minutes Researchers at the University of California Riverside Bourns College of Engineering have developed a three-dimensional silicon-decorated cone-shaped carbon nanotube cluster architecture for lithium ion battery anodes that could enable charging of portable
Silicon is a type of anode material that is receiving a lot of attention because its total charge capacity is 10 times higher than commercial graphite based lithium ion battery anodes.
Consider a packaged battery full-cell. Replacing the commonly used graphite anode with silicon anodes will potentially result in a 63 percent increase of total cell capacity and a battery that is 40 percent lighter and smaller.
In a paper Silicon Decorated Cone Shaped Carbon nanotube Clusters for Lithium ion battery Anode recently published in the journal Small UC Riverside researchers developed a novel structure of three-dimensional silicon decorated cone-shaped
carbon nanotube clusters architecture via chemical vapor deposition and inductively coupled plasma treatment. Lithium ion batteries based on this novel architecture demonstrate a high reversible capacity and excellent cycling stability.
and discharge rates nearly 16 times faster than conventionally used graphite based anodes. The researchers believe the ultrafast rate of charge
#Technology using microwave heating may impact electronics manufacture Engineers at Oregon State university have shown successfully that a continuous flow reactor can produce high-quality nanoparticles by using microwave-assisted heating essentially the same forces
The new research has proven that microwave heating can be done in larger systems at high speeds.
And by varying the microwave power it can precisely control nucleation temperature and the resulting size and shape of particles."
"Combining continuous flow with microwave heating could give us the best of both worlds large, fast reactors with perfectly controlled particle size."
Hygienic conditions and sterile procedures are particularly important in hospitals, kitchens and sanitary facilities, air conditioning and ventilation systems, in food preparation and in the manufacture of packaging material.
This allows those charges to be collected at the edge of the film where they can be harnessed to provide an electric current.
The paper's four co-authors come from MIT's departments of physics chemistry materials science and engineering and electrical engineering and computer science.
along with MIT's Jeffrey Grossman the Carl Richard Soderberg Associate professor of Power engineering and three others appears this month in the journal ACS Nano explaining in greater detail the science behind the strategy employed to reach this efficiency breakthrough.
and receive a microwave signal the system becomes capable of revealing charge-carrier concentrations or defect locations in specific regions of nanoscale materials and devices.
That technique called near-field scanning microwave microscopy (NSMM) had never before been attempted using a nanowire probe.
and negative charge carriers inside a nanostructure#information of great practical significance to microdevice fabricators#and scientists from PML's Electromagnetics Division have made notable progress in the technique.
and aluminum (200 nm) in order to conduct the microwave signal all the way to the end of the tip and back.
Optical radiation can serve to excite the sample in a different way from the microwave signal
The problem with that approach says veteran NSMM researcher Pavel Kabos of the Advanced High-frequency Devices Program in PML's Electromagnetics Division is that the laser has to shine in from the side.
With the new design the illumination will be applied directly over the probe tip at the same place on the sample that is being exposed to the microwave signal.
and integrate measurements from topographic microwave and optical modalities. But Bertness is optimistic. It took ten years of hard work learning how to fabricate
"We started by buying simple resistors then tried induction and obtained results that far exceeded our expectations,
The team created silicon dioxide (Sio2) nanotube anodes for lithium-ion batteries and found they had over three times as much energy storage capacity as the carbon-based anodes currently being used.
This has significant implications for industries including electronics and electric vehicles which are always trying to squeeze longer discharges out of batteries."
The paper,"Stable Cycling of Sio2 Nanotubes as High-performance Anodes for Lithium-Ion Batteries,"was published online in the journal Nature Scientific Reports.
It was authored co by Cengiz S. Ozkan, a mechanical engineering professor, Mihrimah Ozkan, an electrical engineering professor,
Silicon dioxide has previously been used as an anode material in lithium ion batteries, but the ability to synthesize the material into highly uniform exotic nanostructures with high energy density
Specifically, Sio2 nanotube anodes were cycled 100 times without any loss in energy storage capability and the authors are highly confident that they could be cycled hundreds more times.
including light transparency and electrical conductivity, and can be recycled completely. To create the thin film the researchers spin coated graphene oxide solution to a glass surface.
Satellite Signals A wireless device developed by researchers at Duke university that converts microwaves into electricity could eventually harvest Wi-fi or satellite signals for power according to its creators.
In this case the microwave-harvesting metamaterial that acts kind of like a solar panel converting microwaves into up to 7. 3 volts of electricity enough to charge small electronics.
People with Down syndrome usually have smaller brain volumes than control groups including significantly smaller cerebellums a portion of the brain involved in motor control.
Sharks don t generate their own electric field. Instead they have sensors that can pick up electric signals
Sharks can sense electric fields of creatures around them. Perhaps the don't eat me markings would be benifical in that case...
and use ultraviolet lamps and a hot plate stored in two heavy suitcases. Zaman has made a cheap handheld scanner called Pharmacheck to quickly identify fake medicine in villages
and ONR said they were armed with a variety of weapons--from. 50 caliber machine guns to high-powered microwave weapons.
As the Airborne wind turbine makes giant vertical loops air spins four rotors which drive generators. A tether sends the power to a ground station.
CRISPR has a certain protein in it called Cas9 that acts like a scissor Lu associate professor of biological engineering electrical engineering
and create a live data set for every aspect of a space including the electrical engineering millwork and piping.
They beamed radar and lasers into the ground and wheeled scanners over a vast area to study subtle changes in the Earth's magnetic field.#
and a 74-horsepower electric motor. With nearly 100 percent of its 52 foot-pounds of torque available instantly, it can hit 60 mph in under four seconds.
Clutch-less electric motor Horsepower: 74 Fuel economy: n/a Price: n/a Range: 53 miles Charge time:
a crown of flakes, created by putting the material in a microwave oven and allowing bubbles to come to the surface and burst, in a way"just like popcorn,
They are driven by an external rotating magnetic field; they align themselves along the magnetic field lines and rotate about their longitudinal axis. Due to their helical shape they are able to swim forward through liquids.
When applying conventional fabrication techniques the magnetic properties of these micro-objects depend on the shape of the devices themselves.
In the first part of the curing stage they exposed a thin layer of this material to a magnetic field.
When an electric current is applied to one of the DEAS it creates a biased stress between the two DEAS thus bending the actuator.
My name is Luis Garcia and I#m a recently graduated 23-year-old Mechatronics Engineer from Sinaloa Mexico;
has cracked Dyson finally its 16-year mission to create a robot vacuum cleaner? The company#s  teaser video hints at a new release which looks a lot like a rival for the best-selling Roomba
#A truly intelligent domestic robot needs to complete complex everyday tasks while adapting to a constantly changing environment.#
#In order to take a leap forward in making our domestic robot industry a major industry it#s essential to expand robot demand based on the business service models of other industries with a secure core technology.
electrical engineering and neuroscience. While these interests may seem divergent the synthesis of them led him to Brown University#s Braingate Group where he is the Senior Research and development Engineer.
The team comprised of Daniela Rus Professor of Electrical engineering and Computer science and Director of CSAIL Cagdas Onal Assistant professor of Mechanical engineering at the Worcester Polytechnic institute and Andrew Marchese a doctoral candidate in engineering at MIT created the robot to be autonomous.
and electrical circuits is not so the team is working on creating a sensitive polymer skin to make the appearance of the hand more realistic and more usable in everyday life situations.
and his team of researchers from the Department of Systems and Control engineering and the Centre for Biomedical Cybernetics at the University of Malta who have developed a music player that can be controlled by the human brain.
Another distinguishing feature is haptic signal processing a technique that estimates muscular force during training and makes this information visible.
a team of ten undergraduate students (six mechanical engineers and two electrical engineers from ETH Zurich and two industrial designers from ZHDK) completed the project from concept to functional prototype as part of a nine-month
It uses electric motors instead of muscles and steel cables instead of tendons. 3d printed plastic parts work like bones and a rubber coating acts as the skin.
Our colleagues Yan Ou and Agung Julius at RPI and Paul Kim and Minjun Kim at Drexel use an external magnetic field to steer single-celled protozoa swimming in a Petri dish.
The same magnetic field is applied to every protozoa. We want controllers to steer them to do useful tasks such as targeted drug delivery and mobile sensing.
Other examples include bacteria that move toward a light source (phototaxis) single celled organisms attracted by a chemical source (chemotaxis) microrobots driven by an external magnetic field (magmites)
a modular robotâ consisting of hexagonal-shaped single-rotor units that can take on just about any shape or form.
However when joined together these units evolve into a sophisticated multi-rotor system capable of coordinated flight and much more.
In the beginningin the summer of 2008 Professor Raffaello Dndrea at the Institute for Dynamic Systems and Control at ETH Zurich envisioned an art installation consisting of single-rotor robotic units that would self-assemble on the ground
however was the stiffness of the chassis and manufacturing variability of the rotors. Only after completing the design of Revision 1
and the drone is indeed a toy quad rotor meant for playing games. We thought we could develop a game for the Parrot that would serve as a means for crowdsourcing the data we needed.
Instructions are sent then to electric motors that actuate three special wheels (called omniwheels), which in turn transfer forces to the sphere below:
Terahertz waves operate at a much higher frequency than the microwaves used in cellular and Wi-fi communications,
#Invisible Drones Could Become Reality with New Meta Material Electrical engineers at the University of California in San diego have created a new design for a cloaking device,
Boubacar Kanté, senior author of the study xtremely Thin Dielectric Metasurface for Carpet Cloakingnvisibility may seem like magic at first
An extremely thin cloaking devise is designed using dielectric materials. The cloak is a thin Teflon sheet (light blue) embedded with many small, cylindrical ceramic particles (dark blue.
Photo courtesy of Li-Yi Hsu/University of California, San diego) An extremely thin cloaking devise is designed using dielectric materials.
The battery-powered drone has a 10-foot (3-meter) wingspan, 10 electric motors (eight on the wings,
and entirely through the air or as researchers explain in more depth, hrough a time-varying magnetic field.
the more efficiently the energy is transferred, according to researchers. ven with an air gap of 20 centimeters,
The UC research team has developed a new kind of lithium-ion battery anode using portobello mushrooms,
But even better, according to the UC team, mushroom anodes could actually result in batteries that increase in efficiency over time, due to the organic material high potassium salt content. ith battery materials like this,
and electrical engineer Wolfram Pernice at the Karlsruhe Institute of technology in Germany, have hit on a solution to the disappearing memory problem using a material at the heart of rewritable CDS and DVDS.
known as a suspended microchannel resonator (SMR), measures particlesmasses as they flow through a narrow channel.
and to measure how each particle affects the vibration frequency of each mode at each point along the resonator.
This has an internal oscillator that adjusts its own frequency to correspond to the frequency of a resonator mode,
which makes use of several vibration modes to image an object as it sits on a nanomechanical resonator.
where objects must be attached to the resonator. The ability to achieve this dynamically in flow opens up exciting possibilities,
#A new look at superfluidity MIT physicists have created a superfluid gas, the so-called Bose-Einstein condensate, for the first time in an extremely high magnetic field.
The magnetic field is a synthetic magnetic field, generated using laser beams, and is 100 times stronger than that of the world strongest magnets.
Within this magnetic field, the researchers could keep a gas superfluid for a tenth of a second just long enough for the team to observe it.
Superfluids are thought to flow endlessly, without losing energy, similar to electrons in a superconductor. Observing the behavior of superfluids
to create and maintain a superfluid gas long enough to observe it at ultrahigh synthetic magnetic fields. oing to extremes is the way to make discoveries,
The electric field of the laser beams creates what known as a periodic potential landscape, similar to an egg carton,
When charged particles are exposed to magnetic fields, their trajectories are bent into circular orbits, causing them to loop around and around.
The higher the magnetic field, the tighter a particle orbit becomes. However, to confine electrons to the microscopic scale of a crystalline material,
a magnetic field 100 times stronger than that of the strongest magnets in the world would be required.
their trajectories are unaffected normally by magnetic fields. Instead, the MIT group came up with a technique to generate a synthetic
ultrahigh magnetic field, using laser beams to push atoms around in tiny orbits, similar to the orbits of electrons under a real magnetic field.
In this scenario, atoms could only move with the help of laser beams. ow the laser beams could be used to make neutral atoms move around like electrons in a strong magnetic field
or loop around, in a radius as small as two lattice squares, similar to how particles would move in an extremely high magnetic field. nce we had the idea,
Kennedy says. ew perspectives to known physicsfter developing the tilting technique to simulate a high magnetic field,
Those images also reveal the structure of the magnetic field something that been known, but never directly visualized until now. he main accomplishment is that we were able to verify
Ketterle says. f we can get synthetic magnetic fields under even better control, our laboratory could do years of research on this topic.
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