and store that energy in chemical form, ready to be released again on demand. This solution is no solar-energy panacea:
since it makes the sun energy, in the form of heat, storable and distributable, says Jeffrey Grossman, an associate professor of materials science and engineering,
Exposing them to sunlight causes them to absorb energy and jump from one configuration to the other,
taking in energy from the sun, storing it indefinitely, and then releasing it on demand.
In order to reach the desired energy density the amount of energy that can be stored in a given weight
The work was supported by BP though the MIT Energy Initiative and the U s. Department of energy Advanced Research Projects Agency Energy n
his could have great applications in energy, and especially in solar thermophotovoltaicsharnessing solar energy by using it to heat a material,
and the U s. Department of energy, through the MIT S3tec Energy Research Frontier Center r
#Seeking a parts list for the retina New technique classifies retinal neurons into 15 categories,
whose batteries are charged through energy generated by braking. According to tests conducted by the startup the $8000 system which has been incorporated into hundreds of vans in the commercial fleets of Coca-cola
which in turn releases the energy to the electric motor during acceleration. Custom software reads the driver s braking habits
Last month Fast Company ranked the startup No. 35 on its list of the world s 50 most innovative companies and third in energy-specific companies trailing only Tesla motors and General electric.
This week the company was named an Energy Innovation Pioneer by the global analytics company IHS at CERAWEEK a leading international energy conference.
but began viewing climate change and energy as the real challenges of my generation. After graduating he co-founded the consulting
and engineering services firm Strategic Energy systems with two MIT alumni before taking a position as director of alternative energy at Citizens Energy in Boston.
which had launched among other things the MIT Energy Club (2004) and the MIT Energy Initiative (2006) both
I got more engaged with MIT as MIT got more engaged with energy he says.
Back on campus he says the energy landscape has expanded certainly since he was an undergraduate
MIT has done a tremendous job at becoming a world center for energy innovation he says e
But a new study by researchers at MIT finds that a egmentalapproach involving separate targeting of energy choices
Since a conventional lidar system would require about 100 times as many photons to make depth estimates of similar accuracy under comparable conditions the new system could yield substantial savings in energy and time
and energy between the drop and the surface, Varanasi says. f you can get the drops to bounce faster,
The research received support from the Defense Advanced Research Projects Agency, the MIT Energy Initiative, the National Science Foundation,
The research was supported by a Young Faculty Award from the Defense Advanced Research Projects Agency, the MIT Energy Initiative,
To help figure that out the researchers created a form of cisplatin targeted to go to mitochondria cell organelles that generate energy.
which households leak the most energy and, among those, which owners are most likely to make fixes,
But the startup also works with the U s. Department of defense to help identify energy-wasting buildings on their bases.
Revving up Essess Traditional energy audits usually involve sending one employee to a home to manually scan and record leaks.
Essess President and CEO Tom Scaramellino says. t not just figuring out who the worst culprits are who wasting the most energy
because there are customers that can be wasting energy, but theyl never fix it, he says. here the actual energy waste and the psychological component to do something about it.
Those are two distinct analyses we layer on top of one another. Results for utilities companies indicate for instance, which zip codes have homes with the most leaky attics and, among those,
which eat up about 50 percent of energy used in homes and buildings. HVAC system efficiency is affected by the system itself, by household behavioral factors such as thermostat and window usage and
and then there suddenly a catastrophic release of energy. he group continued to stretch and squeeze the ion crystal to manipulate the arrangement of atoms,
that can extract energy from the environment to recharge. Last week, at the Symposia on VLSI Technology And circuits, MIT researchers presented a new power converter chip that can harvest more than 80 percent of the energy trickling into it
even at the extremely low power levels characteristic of tiny solar cells. Previous ultralow-power converters that used the same approach had efficiencies of only 40 or 50 percent.
since the rate at which it dissipates energy as heat is proportional to the square of the current.
because there a fixed amount of energy that consumed by doing the work, says Brett Miwa,
while a flow battery system is appropriate for battery chemistries with a low energy density (those that can only store a limited amount of energy for a given weight),
#Tiny wires could provide a big energy boost Wearable electronic devices for health and fitness monitoring are a rapidly growing area of consumer electronics;
it would be desirable to have a high volumetric power density (the amount of power stored in a given volume) and high volumetric energy density (the amount of energy in a given volume).
and desulfurize heavy crude oil are expensive and energy-intensive, and they require hydrogen, which companies typically produce from natural gas a high-cost process that consumes valuable gas resources
and how much energy is needed to start them. By knowing those nergy barriers, the researchers can determine the reaction rates under different operating conditions critical information for the overall model of the process.
This research was supported by Saudi Aramco, a founding member of the MIT Energy Initiative
#New study shows how nanoparticles can clean up environmental pollutants Many human-made pollutants in the environment resist degradation through natural processes,
CEI is using its transistors to enable power electronics that will make data centers less energy-intensive
and to really make an impact on how energy is used in the world, says CEI cofounder Tomás Palacios,
and that a minimum of energy is lost during the transfer. To do that in conventional semiconductor junctions the crystalline structures of both materials need to match.
and Barry Rand an assistant professor of electrical engineering and the Andlinger Center for Energy and the Environment.
Findings are detailed in a paper published in November in the journal Advanced Energy Materials.
#Toward a low-cost'artificial leaf'that produces clean hydrogen fuel For years scientists have been pursuing artificial leaf technology a green approach to making hydrogen fuel that copies plants'ability to convert sunlight into a form of energy they can use.
Producing hydrogen at low cost from water using the clean energy from the sun would make this form of energy
thus saving energy. Furthermore, as opposed to other methods no expensive devices are required. The film with the nanochannels is placed merely in the precipitation bath."
However it will provide an environmentally friendly low-cost way to make nanoporous graphene for use in supercapacitors-devices that can store energy and release it rapidly.
The findings were published just in Nano Energy by scientists from the OSU College of Science OSU College of Engineering Argonne National Laboratory the University of South Florida and the National Energy technology Laboratory in Albany Ore.
and short but powerful energy release is needed. They are being used in consumer electronics and have applications in heavy industry with the ability to power anything from a crane to a forklift.
A supercapacitor can capture energy that might otherwise be wasted such as in braking operations. And their energy storage abilities may help smooth out the power flow from alternative energy systems such as wind energy.
which require wiring to outside energy or light sources this is a groundbreaking new direction. The research team received funding for their study from the Israel Ministry of Science and Technology the European Research Council and the Biotechnology and Biological sciences Research Council.
which display processor memory and energy devices are integrated. The high temperature processes essential for high performance electronic devices have restricted severely the development of flexible electronics because of the fundamental thermal instabilities of polymer materials.
and inorganic-based energy devices such as battery solar cell and self-powered devices that require high temperature processes s
but this costs more and requires more energy to run. Color IQ is a thin glass tube,
#Streamlining thin film processing saves time energy Energy storage devices and computer screens may seem worlds apart but they're not.
This saves energy and is much more efficient Fan said. In this project he has been collaborating with assistant professor Zhengrong Gu in the agricultural
The high-energy plasma can deposit highly transparent and conductive thin films create high quality semiconductors and pattern micro-or nanoscale devices thus making the display images brighter and clearer.
The activation method has the potential to improve production efficiency saving time and energy he noted d
and energy materials said co-author Volker Rose. Both that remarkable resolution and the precise chemical fingerprinting of individual nickel nanoclusters were also clearly evident in the topographic images of the sample surface even down to the height of a single atom.
-and hold enough energy to run your watch for a long period of time said Michel Barsoum Phd Distinguished Professor in the College of Engineering.
and can store energy but it would also need to be flexible enough to bend around your wrist.
Crumpled graphene could provide an unconventional energy storag g
#Microtubes create cozy space for neurons to grow and grow fast Tiny, thin microtubes could provide a scaffold for neuron cultures to grow
who is also a member of the Kavli Energy Nanoscience Institute (Kavli ENSI). Nanopore sequencing of DNA, in
The secret of such an imaginary non-stop vibrating system relies on the fact that it dissipates very little energy.
The energy dissipation of a vibrating system is quantified by the quality factor. In laboratories, by knowing the quality factor,
and how much energy is lost in the process. This allows them to determine how precise the resonator can be at measuring
In this case the energy requirement does not allow the structure to break its symmetry. In a study led by Xiang Zhang director of Berkeley Lab's Materials sciences Division he
Chemists gain edge in next-gen energy Rice university scientists who want to gain an edge in energy production and storage report they have found it in molybdenum disulfide.
and have potential for a variety of energy-oriented applications. The Rice research appears in the journal Advanced Materials.
which store energy quickly as static charge and release it in a burst. Though they don't store as much energy as an electrochemical battery they have long lifespans
and are in wide use because they can deliver far more power than a battery. The Rice lab built supercapacitors with the films;
But that temperature threshold dropped for a highly charged battery suggesting that operating at full energy capacity accelerates structural degradation and vulnerability.
In this technique measurements of the energy lost by a well-defined electron beam reveal local charge densities and elemental configurations.
In this process a material absorbs x-ray photons at a specific rate as a function of photon energy.
A plot of the absorption intensity as a function of energy is referred to as a spectrum
The x-ray photons used in this study have energies that are about 250 times higher than those of visible light
These experiments result in absorption vs. x-ray energy curves (spectra) that reflect how water molecules within nanometers of the gold surface absorb the x-rays.
's National Energy Research Scientific Computing Center (NERSC) he conducted large molecular dynamics simulations of the gold-water interface
The global market for graphene is reported to have reached US$9 million this year with most sales concentrated in the semiconductor electronics battery energy and composites.
This progress has important applications in sectors such as chemical, petrochemical and energy, thus becoming a useful technology in all industrial applications using heat transfer systems such as solar power plants, nuclear power plants, combined-cycle power plants and heating, among other.
These fluids are employed to transport energy in the form of heat from the point where the heat is generated (burners
This capability should open up entirely new strategies for fields ranging from computer miniaturization to energy and pathogen detection n
whether it is for energy capture, or to create artificial noses for the early detection of disease
diffusive theory over-predicted the amount of energy carried away from the heated surface.""We discovered fundamental differences in how heat is transported over short versus long distances.
or discontinuous pathways that pose a serious drawback when using blended systems known as bulk heterojunction donor-acceptor or positive-negative (p-n) junctions for harvesting energy in organic solar cells.
and like grass blades they are particularly effective at converting light to energy. The advance not only addresses the problem of dead ends or discontinuous pathways that make for inefficient energy transfer
and the ability to efficiently convert light into energy. The technique is simple inexpensive and applicable to a library of donor
Toward making lithium-sulfur batteries a commercial reality for a bigger energy punch More information:
but not much of the rest of the spectrum since that would increase the energy that is reradiated by the material
The sunlight's energy is converted first to heat which then causes the material to glow emitting light that can in turn be converted to an electric current.
which can consume a great deal of energy particularly in computing applications. Researchers are therefore searching for ways to harness other properties of electrons such as the'spin'of an electron as data carriers in the hope that this will lead to devices that consume less power.
When semiconducting materials are subjected to an input of a specific energy bound electrons can be moved to higher energy conducting states.
The specific energy required to make this jump to the conducting state is defined as the band gap.
#Controlling photoluminescence with silicon nanophotonics for better devices Silicon nanowires have a great deal of potential in future high-performance electronic sensing and energy devices.
It is the thermal conductivity that dictates how efficiently energy can be extracted from the fuel. Composites have also been created to store the by-products of the nuclear energy cycle nuclear waste where the different components of the composite can each store a different part of the waste.
"Many researchers are looking to inorganic materials for new sources of energy, "said Elena Rozhkova, chemist at Argonne's Center for Nanoscale Materials, a DOE Office of Science (Office of Basic energy Sciences) User Facility."
"Our goal is to learn from the natural world and use its materials as building blocks for innovation."
"For Rozhkova, this particular building block is inspired by the function of an ancient protein known to turn light into energy.
"Working in the basic energy sciences, we were able to demonstrate an energy-rich biologically-inspired alternative to gas."
"This research,"Photoinduced Electron Transfer pathways in Hydrogen-Evolving Reduced graphene oxide-Boosted Hybrid Nano-Bio Catalyst,
Johnson said the company's graphene supercapacitors are reaching the energy density of lithium-ion batteries without a similar energy fade over time.
The material would replace a bulky and energy-hungry metal oxide framework. The graphene-infused paint worked well Tour said
The Harvard team manipulated the band gap, the energy barrier to electron flow.""By a certain choice of dopantsn this case, hydrogen or lithiume can widen
The traditional method changes the energy level to meet the target; the new method moves the target itself.
The results challenge the prevailing view that supercharging batteries is always harder on battery electrodes than charging at slower rates according to researchers from Stanford university and the Stanford Institute for Materials & Energy Sciences (SIMES) at the Department of energy's SLAC National Accelerator Laboratory.
an advancement that could enable electronic devices to function with very little energy. The process involves passing electrons through a quantum well to cool them
The team details its research in"Energy-filtered cold electron transport at room temperature, "which is published in Nature Communications on Wednesday, Sept. 10."
"Dr. Koh and his research team are developing real-world solutions to a critical global challenge of utilizing the energy efficiently
The most important challenge of this future research is to keep the electron from gaining energy as it travels across device components.
This would require research into how energy-gaining pathways could be blocked effectively
#Molecular self-assembly controls graphene-edge configuration A research team headed by Prof. Patrick Han and Prof.
It turns out that by adding fluorine Liu said we're changing the energy corrugation landscape of the graphene.
but the physical changes in height paled in comparison to the changes of local energy each fluorine atom produced.
but also how much energy is in their bonds. Each fluorine atom has so much electronic charge that you get tall peaks
but instead retain that energy. The concept behind the detector is simple says University of Maryland Physics Professor Dennis Drew.
which heat up but don't lose their energy easily. So they remain hot while the carbon atomic lattice remains cold.
Typically about a third of the remaining energy would be lost for every few microns (millionths of a meter) the plasmons traveled along the wire explained Kenneth Goodfellow a graduate student at Rochester's Institute of Optics
It was surprising to see that enough energy was left after the round-trip said Goodfellow.
As Mos2 is reduced to thinner and thinner layers the transfer of energy between electrons and photons becomes more efficient.
The key to Mos2's desirable photonic properties is in the structure of its energy band gap.
which allows electrons to easily move between energy bands by releasing photons. Graphene is inefficient at light emission
but, unlike graphene, they have natural energy bandgaps. This facilitates their application in transistors and other electronic devices because
who is also an investigator with the Kavli Energy Nanosciences Institute (Kavli-ENSI).""For example, the combination of Mos2 and WS2 forms a type-II semiconductor that enables fast charge separation.
Materials chemist Paul Lahti co-director with Thomas Russell of UMASS Amherst's Energy Frontiers Research center (EFRC) supported by the U s. Department of energy says One of the big implications of this work
or stretched creates a voltage by converting energy from motion into electrical energy, in the form of nanorods.
or do away with batteries completely by tapping into the stray energy that is all around us is an exciting concept.
it not only increases energy density (the amount of energy stored and ready for use) but allows electrochemical capacitors to maintain their high power density (the amount of power per unit of mass or volume), according to Xiangfeng Duan,
Graphene research on the cusp of new energy capabilities (Phys. org) There remains a lot to learn on the frontiers of solar power research particularly
which could change how we harness energy. Under the guidance of Canada Research Chair in Materials science with Synchrotron radiation Dr. Alexander Moewes University of Saskatchewan researcher Adrian Hunt spent his Phd investigating graphene oxide a cutting-edge material that he hopes will shape the future
in order to get converted into usable energy; secondly the cell also has to be transparent for light to get through.
#Used-cigarette butts offer energy storage solution A group of scientists from South korea have converted used-cigarette butts into a high-performing material that could be integrated into computers handheld devices electrical vehicles and wind turbines to store energy.
if the energies of the electrons in both layers are tuned exactly the right way. In the experiment, this can be done using electrostatic fields.
Florian Libisch and Professor Joachim Burgdörfer (TU Vienna) provided computer simulations to calculate how the energy of the electrons changes in both materials
but sustaining the confined energy was challenging because light tends to dissipate at a metal's surface.
and re-emitted into another energy level that differs from their initial level. By measuring and analyzing these re-emitted photons through Raman spectroscopy,
using a simple SEM operating at only a fraction of the electron energies of previous work,
that could harvest energy from light much more efficiently than traditional thin-film solar cells s
If the complementary energy donors and acceptors are loaded separately and sequentially the transfer of energy between them occurs exclusively within the intracellular space he says.
As the energy transfer takes place the acceptors emit a fluorescent signal that can be observed with a microscope.
which ensures its energy conversion efficiency far beyond the traditional manual energy device. Therefore, inspired by living systems,
which can greatly enhance the conversion efficiency helping us to solve the global energy shortage e
Quantum dots are novel nanostructures that can become the basis of the next generation of solar cells capable of squeezing additional electricity out of the extra energy of blue and ultraviolet photons.
but because of the rapid cooling of energetic (or'hot')charge carriers the extra energy of blue and ultraviolet solar photons is wasted in producing heat said Victor Klimov director of the Center for Advanced Solar Photophysics
In principle this lost energy can be recovered by converting it into additional photocurrent via carrier multiplication.
In this way absorption of a single photon from the high-energy end of the solar spectrum produces not just one
Klimov explained This strong enhancement is derived primarily from the unusually slow phonon relaxation of hot holes that become trapped in high-energy states within the thick Cdse shell.
#Electrical cables that store energy? New nanotech may provide power storage in electric cables clothes Imagine being able to carry all the juice you needed to power your MP3 PLAYER, smartphone and electric car in the fabric of your jacket?
special fibers could also be developed with nanostructures to conduct and store energy. More immediate applications could be seen in the design
and conduct energy on the same wire, heavy, space-consuming batteries could become a thing of the past.
the layers around the wire independently store powerful energy. In other words, Thomas and his team created a supercapacitor on the outside of the copper wire.
Supercapcitors store powerful energy, like that needed to start a vehicle or heavy-construction equipment.
While the overall efficiency of this cell is still low compared to other types about 9 percent of the energy of sunlight is converted to electricity the rate of improvement of this technology is one of the most rapid seen for a solar technology.
And the new technology has important advantages notably a manufacturing process that is far less energy-intensive than other types.
used in our bodies for the digestion of food into sugars and energy during human metabolism, for example."
since they supply most of the energy of a cell, "said Walter."Work with these enzymes could lead to future applications in green energy production such as fuel cells using biomaterials for fuel."
or an electric car powered by energy stored in its chassis, or a home where the dry wall and siding store the electricity that runs the lights and appliances.
and Energy Devices Laboratory far more important than their nondescript appearance suggests.""These devices demonstrate for the first time as far as we can tell that it is possible to create materials that can store
"When you can integrate energy into the components used to build systems, it opens the door to a whole new world of technological possibilities.
"In an unpackaged, structurally integrated state our supercapacitor can store more energy and operate at higher voltages than a packaged, off-the-shelf commercial supercapacitor, even under intense dynamic and static forces,
Supercaps must be larger and heavier to store the same amount of energy as lithium-ion batteries.
"Supercapacitors store ten times less energy than current lithium-ion batteries, but they can last a thousand times longer.
The intensity of interest in"multifunctional"devices of this sort is reflected by the fact that the U s. Department of energy's Advanced Research Project Agency for Energy is investing $8. 7 million in research projects that focus specifically on incorporating energy storage into structural materials.
because it can absorb up to 90%of the energy it receives. However, over time, the effects of light
This one packs an interconnected network of graphene and carbon nanotubes so tightly that it stores energy comparable to some thin-film lithium batteriesn area where batteries have held traditionally a large advantage.
The device also maintains the advantage of charging and releasing energy much faster than a battery.
and serve as energy-carrying wires in medical implants. Yuan Chen a professor of chemical engineering at NTU led the new study working with Dingshan Yu Kunli Goh Hong Wang Li Wei and Wenchao Jiang at NTU;
but don't deliver a large amount of energy quickly. Microelectronics to electric vehicles can benefit from energy storage devices that offer high power and high energy density.
But because they require large amounts of accessible surface area to store energy they have lagged always badly in energy density by volume.
As the scorching-hot air moves through the exchanger the chilled tubing absorbs the energy cooling the air to minus 238 degrees Fahrenheit in a fraction of a second.
They get more energy out of the liquid hydrogen than you can get just burning it.
so using much of the energy that went into making it a liquid is very effective.
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