The corticosteroid DEX, a powerful ameliorator of inflammation, was released from the polymer by external application of an Electromagnetic field for 2 hours/day for a week.
The nanowires respond to an electromagnetic field generated by a separate device, which can be used to control the release of a preloaded drug.
a conductive polymer material that responds to electromagnetic fields. Wen Gao, a postdoctoral researcher in the Center for Paralysis Research who worked on the project with Borgens
when the correct electromagnetic field is applied, the nanowires release small amounts of the payload. This process can be started
by using the corresponding electromagnetic field stimulating device, Borgens said. The researchers captured and transported a patch of the nanowire carpet on water droplets that were used used to deliver it to the site of injury.
The magnitude and wave form of the electromagnetic field must be tuned to obtain the optimum release of the drug,
The electromagnetic field is likely affecting the interaction between the nanomaterial and the drug molecules, Borgens said."
Once the electromagnetic field is removed, the polymer snaps back to the initial architecture and retains the remaining drug molecules."
"For each different drug the team would need to find the corresponding optimal electromagnetic field for its release,
Functional Drug Delivery Using Electromagnetic field-Responsive Polypyrrole Nanowires, "was published in the journal Langmuir. Other team members involved in the research include John Cirillo,
who designed and constructed the electromagnetic field stimulating system; Youngnam Cho, a former faculty member at Purdue's Center for Paralysis Research;
and an electromagnetic field was applied for two hours a day for one week. By the end of the week the treated mice had a weaker GFAP signal than the control groups,
but were exposed not to the electromagnetic field. In some cases, treated mice had no detectable GFAP signal.
2015news and information Nanometric sensor designed to detect herbicides can help diagnose multiple sclerosis June 23rd, 2015sweeping lasers snap together nanoscale geometric grids:
New technique creates multilayered, self-assembled grids with fully customizable shapes and compositions June 23rd,
2015discoveries Nanometric sensor designed to detect herbicides can help diagnose multiple sclerosis June 23rd, 2015sweeping lasers snap together nanoscale geometric grids:
New technique creates multilayered, self-assembled grids with fully customizable shapes and compositions June 23rd,
2015announcements Nanometric sensor designed to detect herbicides can help diagnose multiple sclerosis June 23rd, 2015sweeping lasers snap together nanoscale geometric grids:
New technique creates multilayered, self-assembled grids with fully customizable shapes and compositions June 23rd,
New ultralow-power circuit improves efficiency of energy harvesting to more than 80 percent June 23rd, 2015nanometric sensor designed to detect herbicides can help diagnose multiple sclerosis June 23rd,
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 fits the definition of a metamaterial, a class of structures first realized at UC San diego 15 years ago that is beginning to be expoited for potential practical use."
which endow them with several advantages compared to traditional metal-based metamaterials. The key advantages include enormous degree of tunability, relatively low losses,
"We have demonstrated now an entirely new class of electromagnetic metamaterials that are fabricated from separate atomic planes of Van der waals materials,
"Electromagnetic metamaterials are revolutionizing imaging and sensor technologies. Since the initial demonstration these systems have advanced already to practical applications."#
The U s. Deparment of Energy, Air force Office of Scientific research and the Moore Foundation funded the work.
2015imaging Robust new process forms 3-D shapes from flat sheets of graphene June 23rd, 2015sweeping lasers snap together nanoscale geometric grids:
New technique creates multilayered, self-assembled grids with fully customizable shapes and compositions June 23rd,
2015robust new process forms 3-D shapes from flat sheets of graphene June 23rd, 2015sweeping lasers snap together nanoscale geometric grids:
New technique creates multilayered, self-assembled grids with fully customizable shapes and compositions June 23rd,
nanoscale geometric grids: New technique creates multilayered, self-assembled grids with fully customizable shapes and compositions June 23rd,
2015newly-Developed Biosensor in Iran Detects Cocaine addiction June 23rd, 2015iranian Scientists Design Nano Device to Detect Cyanogen Toxic Gas June 23rd, 2015materials/Metamaterials n-tech Research Issues Report on Smart Coatings Market
, Free Download Available on Firms Website June 24th, 2015uk Graphene Open for Business with Asia June 23rd,
"Quantum dots, which have use in diverse applications such as medical imaging, lighting, display technologies, solar cells, photocatalysts, renewable energy and optoelectronics, are typically expensive and complicated to manufacture.
or chemical environment to provide unique functionality in a wide range of applications from energy to medicine.
2015materials/Metamaterials Physicists fine-tune control of agile exotic materials: Tunable hybrid polaritons realized with graphene layer on hexagonal boron nitride June 24th, 2015n-tech Research Issues Report on Smart Coatings Market, Free Download Available on Firms Website June 24th,
The interaction between liquid crystal molecules and plasmon waves on the nanostructured metallic surface played the key role in generating the polarization-independent
and energy harvesting devices could be transformed by the unique properties of graphene. The extremely cost efficient procedure that we have developed for preparing graphene is of vital importance for the quick industrial exploitation of graphene."
"At just one atom thick, graphene is the thinnest substance capable of conducting electricity. It is very flexible
transparent material able to conduct electricity. The same team have discovered recently that Graphexeter is also more stable than many transparent conductors commonly used by, for example, the display industry.
and solar panels, can be printed on plastic or paper substrates, but these substrates tend to be rigid or hard.
This sensor can measure muscle activity by detecting muscle electrical potentials over an area of 4x4 square centimeters with nine electrodes placed 2 centimeters apart in a 3x3 grid."
Another point is that various industries can reduce their costs by using this method in long-term periods through reducing the pollution and less consumption of energy.
The industrial and usual application of zinc oxide nanoparticles is in rubber industry due to its isolation against electricity
The results demonstrate a powerful operando technique--from the Latin for"in working condition"--that may revolutionize research on catalysts, batteries, fuel cells,
and other major energy technologies.""We tracked the dynamic transformations of a working catalyst, including single atoms and larger structures,
To prove the efficacy of this new mosquito-sized reaction chamber--called a micro-reactor--the scientists tracked the performance of a platinum catalyst during the conversion of ethylene to ethane, a model reaction relevant to many industrial synthesis processes.
low-pressure vacuum--but the micro-reactor allowed the TEM to operate in the presence of an atmosphere of reactive gases."
"But with the micro-reactor, some signals were too small to detect. Particles smaller than a single nanometer were hidden behind
and deposits energy as it passes through the micro-reactor. The sample then emits secondary x-rays,
"Versatile micro-reactor The new micro-reactor was designed specifically and built to work seamlessly with both synchrotron x-rays and electron microscopes."
"Brighter, faster experiments The collaboration has extended already this operando micro-reactor approach to incorporate two additional techniques--infrared
but other new micro-reactors can operate at up to 800 degrees Celsius--more than hot enough for most catalytic reactions
In the near future, this same micro-reactor approach will be used to explore other crucial energy frontiers,
including batteries and fuel cells.""We are seeing the emergence of a very powerful and versatile technique that leverages both NSLS-II
who was named recently Special Assistant for Operando Experimentation for Brookhaven's Energy Sciences Directorate.""This approach complements the many facilities being developed at Brookhaven Lab for operando energy research.
Our goal is to be world leaders in operando science."#"##About Brookhaven National Laboratory Brookhaven National Laboratory is supported by the Office of Science of the U s. Department of energy.
For more information, please visit science. energy. gov. One of ten national laboratories overseen and primarily funded by the Office of Science of the U s. Department of energy (DOE), Brookhaven National Laboratory conducts research in the physical, biomedical, and environmental sciences,
as well as in energy technologies and national security. Brookhaven Lab also builds and operates major scientific facilities available to university, industry and government researchers.
New non-platinum and nanosized catalyst for polymer electrolyte fuel cell Abstract: Canadelectrochim have discovered a new non-platinum and nano-sized catalyst for the fuel cell based on Mother Nature
which mimics the plant leaf. PEMFC as an optimal solution for the future energy economypolymer electrolyte membrane or proton exchange membrane fuel cell (PEMFC), where chemical energy is converted directly to electrical energy,
provides a highly efficient alternative to a standard internal combustion engine. High power density, clean emissions (water), low temperature operation, rapid start-up and shutdown,
and ability to use fuels from renewable sources are several reason why fuel cells such as PEMFC have attracted attention for large market applications,
With these unique features, PEMFC will revolutionize the future energy economy. Modern applications for PEMFCPEMFC will indirectly make water our future fuel.
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
and this causes significant polarization losses (lowers efficiency of the fuel cell). An appropriate catalyst for this process has not been discovered
2). Fuel cells generate electricity by combining hydrogen gas with oxygen to produce water (figure 1). Although that sounds perfectly clean and green,
it can poison the platinum catalysts that are important to driving the fuel cell. In the heart of a fuel cell, CO binds tightly to platinum
and prevents it from grabbing hydrogen, the first step in the reaction.)However, Hydrogen produced from water splitting by photosynthesis is very clean
An electrolyte or membrane is used to separate oxygen gas at the cathode region from hydrogen gas in the anodic region,
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, they would short circuit the current in the fuel cell
and fuel cell degradation occurs. Advancements in the electrolyte system of PEMFCTHE commercial development of a special electrolyte (single ion conducting polymer electrolyte) changed the field of electrochemical devices in a significant way.
Electrochemists have spent many years in a continuing search for newer, more highly conducting (ions and not electrons) and a more electrochemically stable electrolyte system.
With the development of a single ion (for example only hydrogen ions in PEMFC) conducting polymer, electrochemists have the ability to choose from a variety of polymers with both high conductivity for a given ion of interest (off course hydrogen ions
in PEMFC) as well as excellent stability and process-ability allowing the design of electrochemical devices (such as PEMFC) in their most ideal format (3). The broad class of electrolyte (electrolyte is a polymer
and so it is called polymer electrolyte) to which Nafion (discovered by Dupont company) belong has application in a number of area of commercial importance,
not limited to PEMFC. When the PEMFC reaches its eventual position as the major power generation system in a broad-based application such as automotive propulsion,
these Nafion electrolytes will reach a scale of production far exceeding the current levels. This change will bring about significant challenges for companies who manufacture the electrolyte but also offer tremendous opportunity.
It is likely that these future ubiquitous electrolytes for PEMFC will look different, produce much less pollution during manufacturing
and cost much less than the electrolyte that dominate the commercial landscape today. Optimizing PEMFC and positive environmental impactsfuture PEMFC will have to use low grade (inexpensive) hydrogen gas
which contains impurities (e g. carbon monoxide) that poison precious metal catalysts (e g. platinum) only at low temperatures (less than 120°C)
However, at higher temperatures, current electrolyte that is used in PEMFC dehydrate (becomes very dry), reducing ionic conductivity (no hydrogen ions would be able to migrate) and overall cell performance.
and 100%relative humidity because Nafion is used as an electrolyte in these PEMFC. Thus there is a worldwide effort currently underway to find suitable alternatives to Nafion that might allow higher temperature operation
In the direction of operating the fuel cell using a cost effective and non-platinum based catalyst,
Alberta had presented a mechanism for the fuel cell reaction based on Mother Nature which mimics the plant leaf.
Based on this mechanism the reaction of the fuel cell does not require platinum. References 1 Hydrogen
Fuel cells & Infrastructure Technologies Program Multi-Year Research, Development and Demonstration Plan, U s. Department of energy, October 2007.2 Hydrogen fuel Cells & Infrastructure Technologies Program Multi
-Year Research, Development and Demonstration Plan, U s. Department of energy, October 2007.3 M. Doyle and G. Rajendran, Chapter 10, Handbook of fuel cell, edited by W. Vielstich, Volume 3:
Fuel cell technology and Applications, John Wiley Ltd. 2003)##For more information, please click herecontacts: M. Redaphone:
Updates to the Basis of the Company's Industry-Changing Nanotechnology Designed to Strengthen Position in Global Air, Energy,
Hydrogels block harmful oxygen June 15th, 2015nist's'nano-raspberries'could bear fruit in fuel cells June 9th, 201 2
News and information Samsung's New Graphene technology Will Double Life Of Your Lithium-Ion Battery July 1st,
2015announcements Samsung's New Graphene technology Will Double Life Of Your Lithium-Ion Battery July 1st, 2015researchers from the UCA, key players in a pioneering study that may explain the origin of several digestive diseases June 30th,
2015interviews/Book reviews/Essays/Reports/Podcasts/Journals/White papers Samsung's New Graphene technology Will Double Life Of Your Lithium-Ion Battery July 1st,
said Janssen, a postdoctoral researcher in the Sumita Pennathur Lab at UC Santa barbara. With only a minimal amount of human plasma,
or vials of plasma down to technology that would require less than a single drop. He worked more than two years in industry, developing lab-on-a-chip technology for Medimate B. V,
explaining that the chip would need less energy and that obtaining results would require fewer steps than other methods.
Phase diagramm between 2 and 900 Kelvin Using neutron scattering experiments at the BER II research reactor,
since the kinetic energy of the atoms still suppresses the Jahn-Teller effect and magnetic ordering cannot become established.
and would also lead to a considerable reduction in energy usage. According to an American study approximately half the energy required to run computer servers,
is used for cooling purposes alone. A couple of years ago, a research team led by Johan Liu, professor at Chalmers University of Technology, were the first to show that graphene can have a cooling effect on silicon-based electronics.
and has eight Areas of Advance Built environment, Energy, Information and Communication Technology, Life science, Materials science, Nanoscience and Nanotechnology, Production, and Transportation.
Replacing silver coating on catheters with graphene increases treatment effect July 9th, 2015materials/Metamaterials Super graphene can help treat cancer July 10th,
As a consequence, anelastic materials are being investigated for energy damping applications. At macroscopic scale, however, anelaticity is usually very small or negligible, especially in single-crystalline materials.
as supported by electron energy loss spectroscopy (EELS) measurements and also by the fact that no anelastic behaviour could be observed under tension.
suggesting crystalline NWS with point defects as potential candidates for efficient energy damping materials. Researchers from North carolina State university and Brown University have found that nanoscale wires (nanowires) made of common semiconductor materials have pronounced a anelasticity-meaning that the wires,
and emit light energy is such that it can make itself--and, in applications, other very small things--appear 10,000 times as large as its physical size."
amplifying itself as the surrounding environment manipulates the physical properties of its wave energy. The researchers took advantage of this by creating an artificial material in
Much as a very thin string on a guitar can absorb a large amount of acoustic energy from its surroundings
In addition, Yu envisions simply letting the resonator emit that energy in the form of infrared light toward the sky,
#Density-near-zero acoustical metamaterial made in China: Researchers create a tunable membrane'metamaterial'with near-zero density,
effectively recreating the quantum tunneling effect for sound waves When a sound wave hits an obstacle and is scattered,
Researchers have created a tunable membrane'metamaterial'with near-zero density, effectively recreating the quantum tunneling effect for sound waves.
from AIP Publishing, was an acoustical"metamaterial"with an effective density near zero (DNZ). This work could help to endow a transmission network with coveted properties such as high transmission around sharp corners, high-efficient wave splitting,
whether we could make a simple but compact density-near-zero metamaterial from just a few tiny membranes,
minimalist realization of their original density-near-zero idea, consisting of 0. 125 mm-thick polyethylene membranes perforated with 9-millimeter-radius holes in a square grid inside of a metal
or distorting the wavefront--analogous to the quantum tunneling effect, in which a particle crosses through a potential energy barrier otherwise insurmountable by classical mechanics.
the metamaterial would likely be integrated into acoustic circuits and structures. When implemented in a wave splitter,
the researchers found an 80 percent increase in the efficiency of energy transmission, regardless of the wave's incident angle.
Additionally, the researchers are able to tune the frequency of the metamaterial network by altering the membrane's tension and physical dimensions,
In atomic-scale transistors, this current is extremely sensitive to single electrons hopping via discrete energy levels.
The team mixed blood plasma from mice and, separately humans with magnetic aapcs bearing antigens from tumors.
They then ran the plasma through a magnetic column. The tumor-fighting T cells bound to aapcs and stuck to the sides of the column,
2015nanocrystalline Thin-film Solar cells July 15th, 2015better memory with faster lasers July 14th, 2015cancer Nanospheres shield chemo drugs,
2015nanocrystalline Thin-film Solar cells July 15th, 2015better memory with faster lasers July 14th, 2015polymer mold makes perfect silicon nanostructures July 14th,
2015nanocrystalline Thin-film Solar cells July 15th, 2015polymer mold makes perfect silicon nanostructures July 14th, 2015interviews/Book reviews/Essays/Reports/Podcasts/Journals/White papers For faster,
Acute Market Reports July 14th, 2015density-near-zero acoustical metamaterial made in China: Researchers create a tunable membrane'metamaterial'with near-zero density,
effectively recreating the quantum tunneling effect for sound waves July 14th, 2015patents/IP/Tech Transfer/Licensing Nanospheres shield chemo drugs,
2015grants/Awards/Scholarships/Gifts/Contests/Honors/Records Nanocrystalline Thin-film Solar cells July 15th, 2015better memory with faster lasers July 14th, 2015simpore, Uofr,
Eindhoven researchers make important step towards a solar cell that generates hydrogen A solar cell that produces fuel rather than electricity.
The material gallium phosphide enables their solar cell to produce the clean fuel hydrogen gas from liquid water.
The electricity produced by a solar cell can be used to set off chemical reactions. If this generates a fuel
One of the possibilities is to split liquid water using the electricity that is generated (electrolysis.
or combusted in fuel cells-in cars for example-to drive engines. Solar fuel cell To connect an existing silicon solar cell to a battery that splits the water may well be an efficient solution now
but it is a very expensive one. Many researchers are therefore targeting their search at a semiconductor material that is able to both convert sunlight into an electrical charge and split the water, all in one;
when it is a large flat surface as used in Gap solar cells. The researchers have overcome this problem by making a grid of very small Gap nanowires, measuring five hundred nanometers (a millionth of a millimeter) long and ninety nanometers thick.
This immediately boosted the yield of hydrogen by a factor of ten to 2. 9 percent.
even though this is still some way off the fifteen percent achieved by silicon cells coupled to a battery.
-so you then actually have a fuel cell in which you can temporarily store your solar energy.
and lead to faster transistors, cheaper solar cells, new types of sensors and more efficient bioelectric sensory devices.
and it can conduct electricity as well as copper, carrying electrons with almost no resistance even at room temperature, a property known as ballistic transport.
#Rice university finding could lead to cheap, efficient metal-based solar cells: Plasmonics study suggests how to maximize production of'hot electrons'Abstract:
and reduce the costs of photovoltaic solar cells. Although the domestic solar-energy industry grew by 34 percent in 2014,
if the U s. is to meet its national goal of reducing the cost of solar electricity to 6 cents per kilowatt-hour.
LANP graduate student Bob Zheng and postdoctoral research associate Alejandro Manjavacas created a methodology that solar engineers can use to determine the electricity-producing potential for any arrangement of metallic nanoparticles.
including metallic nanoparticles that convert light into plasmons, waves of electrons that flow like a fluid across the particles'surface.
Today's most efficient photovoltaic cells use a combination of semiconductors that are made from rare and expensive elements like gallium and indium.
"The efficiency of semiconductor-based solar cells can never be extended in this way because of the inherent optical properties of the semiconductors."
"Plasmonic-based photovoltaics have had typically low efficiencies, and it hasn't been entirely clear whether those arose from fundamental physical limitations or from less than-optimal designs."
"To make use of the photon's energy, it must be absorbed rather than scattered back out.
but it provides no way of determining how many of those electrons are actually useful, high-energy, hot electrons,
because his experimental setup selectively filtered high-energy hot electrons from their less-energetic counterparts.
"This is an important step toward the realization of plasmonic technologies for solar photovoltaics. This research provides a route to increasing the efficiency of plasmonic hot-carrier devices
and shows that they can be useful for converting sunlight into usable electricity.""Additional co-authors include Hangqi Zhao and Michael Mcclain, both of Rice.
including medicine, electronics and energy. Discovered only 11 years ago, graphene is one of the strongest materials in the world, highly conductive, flexible, and transparent.
Daniel Feuermann and Jeffrey Gordon) that reconstitutes the immense brightness within the plasma of high-power xenon discharge lamps at a remote reactor,
#Researchers boost wireless power transfer with magnetic field enhancement Wireless power transfer works by having a transmitter coil generate a magnetic field;
a receiver coil then draws energy from that magnetic field. One of the major roadblocks for development of marketable wireless power transfer technologies is achieving high efficiency."
"Our experimental results show double the efficiency using the MRFE in comparison to air alone,
One of the leading candidates proposed for enhancing efficiency has been called a technology metamaterials.""We performed a comprehensive analysis using computer models of wireless power systems
and found that MRFE could ultimately be five times more efficient than use of metamaterials and 50 times more efficient than transmitting through air alone,
"Ricketts says. By placing the MRFE between the transmitter and the receiver (without touching either) as an intermediate material,
"The researchers conducted an experiment that transmitted power through air alone, through a metamaterial, and through an MRFE made of the same quality material as the metamaterial.
The MRFE significantly outperformed both of the others. In addition, the MRFE is less than one-tenth the volume of metamaterial enhancers."
"This could help advance efforts to develop wireless power transfer technologies for use with electric vehicles, in buildings,
or in any other application where enhanced efficiency or greater distances are important considerations, "Ricketts says s
#Reshaping the solar spectrum to turn light to electricity: UC Riverside researchers find a way to use the infrared region of the sun's spectrum to make solar cells more efficient A huge gain in this direction has now been made by a team of chemists at the University of California,
Riverside that has found an ingenious way to make solar energy conversion more efficient. The researchers report in Nano Letters that by combining inorganic semiconductor nanocrystals with organic molecules, they have succeeded in"upconverting"photons in the visible and near-infrared regions of the solar spectrum."
"The infrared region of the solar spectrum passes right through the photovoltaic materials that make up today's solar cells,
"This is energy lost, no matter how good your solar cell. The hybrid material we have come up with first captures two infrared photons that would normally pass right through a solar cell without being converted to electricity,
then adds their energies together to make one higher energy photon. This upconverted photon is absorbed readily by photovoltaic cells,
generating electricity from light that normally would be wasted.""Bardeen added that these materials are essentially"reshaping the solar spectrum
"so that it better matches the photovoltaic materials used today in solar cells. The ability to utilize the infrared portion of the solar spectrum could boost solar photovoltaic efficiencies by 30 percent or more.
In their experiments, Bardeen and Tang worked with cadmium selenide and lead selenide semiconductor nanocrystals.
The organic compounds they used to prepare the hybrids were diphenylanthracene and rubrene. The cadmium selenide nanocrystals could convert visible wavelengths to ultraviolet photons,
almost doubling the energy of the incoming photons. The researchers were able to boost the upconversion process by up to three orders of magnitude by coating the cadmium selenide nanocrystals with organic ligands,
"This 550--nanometer light can be absorbed by any solar cell material, "Bardeen said.""The key to this research is the hybrid composite material--combining inorganic semiconductor nanoparticles with organic compounds.
the inorganic component absorbs two photons and passes their energy on to the organic component for combination.
The organic compounds then produce one high-energy photon. Put simply, the inorganics in the composite material take light in;
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