the team has unveiled how fluids behave under extreme confinement by using micron-sized particles known as colloids to act as oversized atoms.
Atoms are tiny and cannot be seen under a microscope. This is not the same for colloidal particles,
and that is our world we can control cellulose-based materials one atom at a time. The Hinestroza group has turned cotton fibers into electronic components such as transistors and thermistors
San diego graduate student has found a way to use mass-produced graphene, an allotrope of carbon that is one atom-thick.
and it 200 times stronger than steel because of the way the atoms bond to form a hexagonal pattern (think of chicken wire) with a cloud of free electrons hovering above and below it,
#Silver-Ion Infused Lignin Nanoparticles Effectively Kill Bacteria Orlin Velev, an engineer at NC State engineer,
The silver-ion infused lignin nanoparticles, coated with a layer of charged polymer that aids the particles to stick to the target microbes,
The nanoparticles infused with silver ions were utilized to attack Pseudomonas aeruginosa, disease-causing bacteria; E coli, a bacterial species that cause food poisoning;
The technique involves aiming a highly focused stream of ions at the topological insulator. To generate that beam of ions,
the researchers used a large particle accelerator called a cyclotron, which accelerates protons through a spiral path inside the machine
This collision produces lithium-8 atoms which are ionized and slowed down to a desired energy level before they are implanted in the topological insulators.
In betaetected nuclear magnetic resonance, ions (in this case, the ionized lithium-8 atoms) of various energies are implanted in the material of interest (the topological insulator) to generate signals from the material layers of interest.
This in depth information allowed the research team to gain new insights into the growth of these highly useful particles at individual atom level.
Toxic heavy metal ions like mercury, lead and arsenic are released into the water through human activity, including manufacturing and industrial processes.
arranging atoms to achieve more potent chemical reactions while using less material. In a paper to be published July 24 in the journal Science
the researchers describe how they teased a small number of platinum atoms into hollow"cage"structures that prove to be 5. 5 times as potent as conventional platinum non-hollowed particles in an oxygen-reduction reaction crucial
then deposit a few layers of platinum atoms on top of it. Calculations by Mavrikakis'group show that platinum atoms have a tendency to burrow into the palladium during the deposition.
This allows the palladium to be removed by etching agents, leaving behind a cagelike structure in the initial shape of the palladium template with faces formed by layers of platinum just three to five atoms thick.
Reactants can flow into the hollow structure through holes in the faces interacting with more platinum atoms in the chemical reaction than would be the case on a flat sheet of platinum or traditional, nonhollowed nanoparticles."
"Because of this new structure they're taking on, they're naturally shortening the distances between platinum atoms,
which makes the platinum more active for the oxygen reduction reaction, "says Luke Roling, a graduate student in Mavrikakis'lab."We're also able to use more of the platinum atoms than we were before--at best,
you could get up to twice as much of your platinum exposed.""Mavrikakis points out that, in a scaled-up version of this process,
it would be possible to reuse palladium atoms after etching agents remove them from the nanoparticle.
or more layers--it's harder to remove the palladium atoms and obtain the desired hollowed cages.
and between three and six atom-thin platinum layers. When these nanocage structures are used in fuel cell electrodes,
who is also a Georgia Research Alliance eminent scholar. e can also control the arrangement of atoms on the surface
it is possible for the new structures to use a maximum of two-thirds of the platinum atoms in an ultra-thin three-layer shell.
which influences the ordering of electrons and nuclei in atoms and molecules. The discovered property is observed usually in materials containing heavy elements,
Synchrotron X-ray scattering utilizes a particle accelerator to generate X-ray beams that allow researchers to determine how atoms
The silicon apercould replace graphite in conventional lithium-ion EV batteries, and that where things start to get really exciting.
what under the hood apparently just a 1. 0 liter gas generator paired with a 12.2 kilowatt lithium-ion battery integrated with a rear-mounted electric motor
Some lithium-ion batteries with graphite anodes provide less than 600 Wh/L a thin sheet of lithium foil was used to replace the more conventional electrode material,
Lithium-ion batteries have become more high-profile recently because of the very notable success of the Tesla Model S
so they combine the calcium with carbonate ions to form calcite, or limestone, which closes up the cracks.
just as it is required in advanced lithium-ion batteries. Even after 4, 000 cycles and at a rate of 10c, the anode achieved a specific capacity of 420 mahg-1. Here are some excerpts from a paper on the work:
the described 3d porous Si-C nanocomposite has a great potential as a practical anode material for Li-ion batteries.
Lewis has conducted previously groundbreaking research in the 3d printing of functional materials including tissue constructs with embedded vasculature lithium-ion microbatteries and ultra-lightweight carbon-fiber epoxy materials s
Air force researchers want to check design modifications to ion thrusters already flying on some advanced military communication satellites.
They used ion beams to slice into each fossil and observe the internal structure of the fossils.
#World's smallest light bulb is 1 atom thick and could help in super-thin TV development By Colin Fernandez for the Daily mail Published:
20:26 GMT, 15 june 2015 Scientists have created the world's thinnest light bulb using the wonder material graphene, in a layer just one atom thick.
and at its ultimate size limit one atom thick.''Graphene, discovered in the UK, is composed of carbon atoms linked in a hexagonal lattice.
The world's largest atom-smashing machine is most famous for proving the existence of the Higgs boson.
produces much less thrust at 30 to 50 micronewtons-less than a thousandth of the output of some relatively low-powered ion thrusters used today.
or released when it transforms from solid to liquid and low differences in disorder of the atoms,
The behaviour of the atoms as a liquid also determines this melting point. They found their Hf-N-c alloy would absorb similar amounts of energy
pull two Li-ion batteries out of the Smartscooter, dump them into shaped holes in the charger,
which individual phosphorus atoms are replaced by arsenic. In a collaborative international effort, American colleagues have built the first field-effect transistors from the new material.
which individual phosphorus atoms are replaced by arsenic. In a collaborative international effort, American colleagues have built the first field-effect transistors from the new material.
because they have consisted only of a few layers of thermal conductive atoms. hen you try to add more layers of graphene,
and even fewer opt ions is serving no one. Tech companies are lining up on both sides of this one, with other major firms standing against the FCC proposed plan C
but because each lattice is only a few atoms thick, the final display is semitransparent, extremely thin,
#New aluminum air battery could blow past lithium-ion runs on water As battery technologies go,
the world has a love-hate relationship with lithium-ion. On the one hand, breakthroughs in Li-ion designs and construction are responsible for the Tesla Model S, new installations, green energy research,
and the modern smartphone. On the other hand, lithium-ion limitations are the reason why most EVS have a range of 40-60 miles, the Model S costs upwards of $80, 000,
and why your smartphone can last all day on a single charge. For all its promise and capability
lithium-ion has limited long-term utility which is why a new announcement from Fuji Pigment is so interesting.
we can build batteries that blow traditional lithium-ion out of the water. Keep in mind that the chart below is exponential,
meaning that fuel cell technology has 10 times the energy density of a typical cobalt-Li ion battery.
and Tesla has thrown already its weight behind the further use of lithium-ion technology u
and stretched the lithium-ion battery to 150%of its original size. The result? The wearer bent
According to the reports, the laser is prepared with the simulated atoms, notably known as quantum dots. The study is published in the Science journal.
Quantum dots act like single atoms as segments for quantum computers. An associate professor of physics, Jason Petta at Princeton and the lead author of the study,
The atoms sit in a perfectly ordered lattice in the nanowire crystal not only in the semiconductor and the metal but also in the transition between the two very different components which is significant in itself explains Peter Krogstrup an assistant professor who helped develop the contact.
When a photon hits a silicon atom inside a solar cell, the excess energy frees up an electron that is later used to generate electricity.
Occasionally, though, the electron simply recombines with a silicon atom, effectively wasting the energy provided by the photon.
is much safer than a lithium-ion cell (though less energy-dense), is nearly immune to temperature extremes,
the gap between silicon nuclei gets so small that silicon atoms cannot carry enough current.
the team created a method to join the atoms on the ends of the two crystalline materials
Ions on the window glass surface subsequently fluorescence in infrared when exposed to that reflected light the more light that hits them,
reliable transistor assembled from a single molecule and a dozen additional atoms. The transistor reportedly operates so precisely that it can control the flow of single electrons,
A single silicon atom is about half a nanometer in size meaning that, in the current generation of electronics,
the terminals of the switch are separated only by around 30 atoms. Once that number drops to single digits these transistors will become inoperable as quantum mechanics starts getting in the way,
however, must be built from the bottom up, by assembling atoms one by one in a chemistry lab. Although this may sound highly unusual and extremely laborious,
and placing 12 indium atoms laid out in a hexagonal shape on top of it, with a phthalocyanine molecule in the middle.
The positively charged atoms around the molecule act as the gate of the transistor regulating the electron's flow and leading to a functioning and reliable molecular transistor.
Scale drives cost reduction for storage We are already witnessing the impact of manufacturing scale on cost for lithium-ion batteries being bid into the electricity market.
Boston-Power has raised up to $450 million for its lithium-ion battery technology over the past five years.
allowing for energy densities that are orders of magnitude higher than lead-acid, lithium-ion, and vanadium redox flow chemistries.
#24m Unveils the Reinvented Lithium-Ion Battery Five years ago, M24 Technologies spun out from parent company A123 with plans to turn a mysterious,
semisolid electrode material into a revolution in how lithium-ion batteries are designed and built. Back then, cofounder and Massachusetts institute of technology professor Yet-Ming Chiang described a lean sheet of paperapproach, combining concepts from flow batteries and fuel cells,
and stripping the modern lithium-ion battery architecture of all its inactive materials and complex manufacturing steps.
-based startup unveiled the results--a lithium-ion battery that it says can be built at $100 per kilowatt-hour at scale,
Compared to the multi-stage process used in today lithium-ion batteries, it implified, streamlined, with a lot of metrology,
to make it as reliable and bulletproof as we can. 24m process can also incorporate a multitude of today different lithium-ion chemistries into its semisolid materials process,
he said. ur defining goal is to chop 50 percent out of the cost of lithium-ion today,
that where we get to this $100 per kilowatt-hour cost. 24m is targeting a lithium-ion energy storage market that already being targeted by contenders like Tesla motors, Boston-Power,
And outside lithium-ion batteries, a host of new chemistries from startups such as Aquion, Eos Energy storage and a long list of flow battery contenders are promising low-cost
So how does 24m approach make for an entirely new way of designing and building lithium-ion batteries?
he said. ut what we realized upon forming the company was that this semisolid electrode capability had a much better home--reinventing how lithium-ion batteries are made.
Chiang identified two main problems in today lithium-ion battery design. ne is that the current lithium-ion battery itself contains a great deal of material that doesn store any energy
He referring to the inactive material that layered between the super-thin electrodes that allow today lithium-ion batteries to charge
and discharge quickly. aving a thin electrode means that the distance the lithium ion has to travel is short--and in the beginning,
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,
That necessary for the lithium ions to get out of the back of the battery, he said.
as compared to typical lithium-ion batteries for power tools, tablets and electric vehicles. At the same time, e believe these to be the safest lithium-ion batteries ever created,
he said, largely due to the lack of brittle, breakable separator materials within the battery cells.
he said. he second aspect of lithium-ion technology that we felt needed to be reconsidered is the whole manufacturing process,
Chiang said. hy does a conventional lithium-ion battery plant have to be so expensive and so large?
First of all, a conventional lithium-ion battery plant starts with metal foil, and then layers liquid nk or painton it to form its electrodes,
he said. verything they use is already in the lithium-ion supply chain. And because all the materials that 24m puts into the process end up in the final product
much simpler than the processes used to make lithium-ion batteries today. he formulation process for making these electrodes is spent exacting,
24m technologies, a123, alevo, aquion, arpa-e, batteries, boston-power, energy storage, eos energy storage, flow battery, imergy, investors, lg chem, lithium-ion
but using it in its pure formraphenend at its ultimate size limitne atom thick. The group is currently working to further characterize the performance of these devicesor example,
and in the process of ionization towards the plasma a air begins to emit light. To achieve this effect allowed the femtosecond laser pulse
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.
Electrons moving through the material knock against electrons in the filament's atoms, giving them energy.
#Novel Approach for Lithium-ion Batteries Researchers from MIT and Cambridge, Mass. -based Battery Company 24m have come up with an advanced manufacturing technology for lithium-ion batteries.
Researchers have claimed of reinvented the process for manufacturing lithium-ion batteries. Not much change has been noticed in the manufacturing of lithium-ion batteries in the two decades.
Yet-Ming Chiang, the Kyocera Professor of Ceramics at MIT, was of the view that the existing technology is not perfect
and there is a need to made advancements. Five years back, Chiang and colleagues developed the new process.
"We realized that a better way to make use of this flowable electrode technology was to reinvent the lithium ion manufacturing process".
and data obtained with matrix-assisted laser desorption/ionization (MALDI) chemical imaging analyses of serial sections of the same tissue.
and is particularly difficult for young children that don understand the purpose of it All the new technology relies on a special silica glass that has ions throughout that fluoresce in infrared in response to laser light.
Hofstadter butterfly Graphene and boron nitride layers each have arranged atoms in a hexagonal, or six-sided, pattern.
when layers of graphene just one to few atoms thick are separated from the graphite.""Graphene conducts electricity better than graphite.
"Even though they are right on top of each other, atoms apart, if you twist them, then the electrons cannot actually go from one layer to the other just by themselves.
#Engineers show how'perfect'materials begin to fail at the nanoscale Crystalline materials have atoms that are lined neatly up in a repeating pattern.
where atoms behave in a more liquid-like way. Their increased mobility makes it more likely they will rearrange themselves into the beginnings of a ine defect,
heye often grown from the bottom up, in an atom-by-atom, layer-by-layer process,
the atoms on the surface comprise a much larger proportion of the total and can control the properties of the nanoscale material.
which provided each atom with the time and energy to move around until it found its preferred spot in the metal crystalline structure.
Gianola said. ur goal was to deduce the point where the first of the nanowire atoms begin to shift out of their original positions
what was driving this process. iffusion of atoms on a surface, Gianola said, s the only mechanism that has this low thermal activation barrier.
Surface diffusion is atoms hopping around, site to site, somewhat chaotically, almost like a fluid.
A palladium atom sitting inside the bulk of the wire has 12 neighbors and has to break most of those bonds to move around.
Velásquez-García and his colleagues use a technique called deep reactive-ion etching. On either face of a silicon wafer, they etch dense arrays of tiny rectangular columns tens of micrometers across
Velásquez-García and his colleagues use a technique called deep reactive-ion etching. On either face of a silicon wafer, they etch dense arrays of tiny rectangular columns tens of micrometers across
but using it in its pure formraphenend at its ultimate size limitne atom thick. he group is currently working to further characterize the performance of these devicesor example,
scientists and engineers have developed many two-dimensional (2d) material innovations layered materials with the thickness of only one atom or a few atoms.
including single atoms and larger structures, during an active reaction at room temperature,"said study coauthor and Brookhaven Lab scientist Eric Stach."
because they have consisted only of a few layers of thermal conductive atoms. When you try to add more layers of graphene,
North carolina State university engineer Orlin Velev and colleagues show that silver-ion infused lignin nanoparticles, which are coated with a charged polymer layer that helps them adhere to the target microbes,
North carolina State university engineer Orlin Velev and colleagues show that silver-ion infused lignin nanoparticles, which are coated with a charged polymer layer that helps them adhere to the target microbes,
and a thin sheet of gold placed a mere 20 atoms away. This field interacts with quantum dotspheres of semiconducting material just six nanometers widehat are sandwiched in between the nanocube and the gold.
and a thin sheet of gold placed a mere 20 atoms away. This field interacts with quantum dotspheres of semiconducting material just six nanometers widehat are sandwiched in between the nanocube and the gold.
The attice constantrepresents the distance between the atoms. To produce all possible wavelengths in the visible spectral range you need several semiconductors of very different lattice constants
Clusters of aluminum metal atoms become superconductive at surprisingly high temperatures February 25th, 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,
Ionized oxygen atoms diffuse towards the sample chamber with low kinetic energies. Samples were exposed to the O2 plasma for about three minutes.
While typical plasma cleaners used in semiconductor fabrication operate using a"sputtering"mechanism where the sample is bombarded with ions carrying significant kinetic energy
A new technique invented at Caltech to produce graphene--a material made up of an atom-thick layer of carbon--at room temperature could help pave the way for commercially feasible graphene-based solar cells and light-emitting diodes, large-panel displays, and flexible electronics."
'groups of three nitrogen atoms (azides), which in the presence of a catalyst can combine with groups of carbon atoms (terminal alkynes) located at the end of other molecules.
while maintaining an appropriate concentration of copper two ions and supporting electrolyte. In this environment, the production of the right catalyst, complexes of copper one and the bonding of nanoparticles itself to the substrate is very efficient,
--which is about four times higher than that of lithium-ion batteries currently used in mobile devices.
Aerogel catalyst shows promise for fuel cells March 2nd, 2015simulating superconducting materials with ultracold atoms: Rice physicists build superconductor analog, observe antiferromagnetic order February 23rd, 2015aerospace/Space Anousheh Ansari Wins the National Space Society's Space Pioneer Award
Clusters of aluminum metal atoms become superconductive at surprisingly high temperatures February 25th, 2015discoveries Researchers synthesize new thin-film material for use in fuel cells:
it is critical to have a large electrochemically accessible surface area, high electrical conductivity and short ion diffusion pathways.
and reduces the distance for ion diffusion process, "said Singh. He explained that supercapacitors store charges through a chemical process known as a redox reaction,
and transporting ions through another material at the interface between electrode and electrolyte. Larger redox reaction surfaces are essential for achieving a higher power density for supercapacitors."
Twin boundaries in lithium-ion batteries May 21st, 2015insidde: Uncovering the real history of art using a graphene scanner May 21st,
Twin boundaries in lithium-ion batteries May 21st, 2015insidde: Uncovering the real history of art using a graphene scanner May 21st,
Twin boundaries in lithium-ion batteries May 21st, 2015insidde: Uncovering the real history of art using a graphene scanner May 21st,
Twin boundaries in lithium-ion batteries May 21st, 2015defects can'Hulk-up'materials: Berkeley lab study shows properly managed damage can boost material thermoelectric performances May 20th, 2015taking control of light emission:
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
the researchers have discovered a novel method to deposit alkali atoms onto the films and thereby control the electron density in the film.
The researchers have studied the sensitivity of thermometers created with a handful of atoms, small enough to be capable of showing typical quantum-style behaviours.
This work has been performed in co-operation with Professor Ion Tiginyanu and his team members from the Technical University of Moldova
Dualbeam Plasma Focused Ion beam for Electrical Fault Isolation & Failure Analysis: New Helios PFIB EFI is integrated a fully deprocessing
Plasma Focused Ion beam for Electrical Fault Isolation & Failure Analysis: New Helios PFIB EFI is integrated a fully deprocessing
2015tissue Engineering Scaffolds Produced from Natural Silk in Iran June 8th, 2015tools FEI Launches New Dualbeam Plasma Focused Ion beam for Electrical Fault Isolation & Failure Analysis:
Graphene layer one atom thick could quadruple rate of condensation heat transfer in generating plants June 1st,
when atoms in materials that slide against each other become"locked in state, "which requires additional energy to overcome."
the atoms-causes an entanglement between the materials that prevents easy sliding.""By creating the graphene-encapsulated diamond ball bearings,
#Buckle up for fast ionic conduction Abstract: ETH material engineers found that the performance of ion-conducting ceramic membranes that are so important in industry depends largely on their strain
and buckling profiles. For the first time, scientists can now selectively manipulate the buckling profile, and thus the physical properties, allowing new technical applications of these membranes."
"Ionics, ion-based data processing and energy conversion, is the electronics of the future, "says Jennifer Rupp, a professor of Electrochemical Materials at ETH Zurich,
Together with her group, Rupp produces ceramic materials that can conduct charged atoms (ions), such as oxygen or lithium ions, very quickly.
so that ions can move more quickly within them. In a study just published in the scientific journal Nature Materials
several doctoral students in her group demonstrated how ion transport depends greatly on the manner in
"This is one of the most frequently used ion conductors in the industry, "explains Sebastian Schweiger, a doctoral student.
In turn, this greatly influences the conductivity of the membrane for oxygen ions. The scientists are able to describe this effect in detail."
and ion conductivity of such membranes,"says Alexander Bork, another doctoral student. In recent decades, scientists have attempted mainly to influence the conductivity of such ion conductors by deliberately'contaminating'the material with certain foreign atoms-in technical terms,
doping. The ETH researchers have shown now that the conductivity can be controlled to a much greater degree by manipulation of the strain
In the experiment with the strain of the ion conductor, we have now found a possible explanation for this behaviour,
It now appears possible to optimise the characteristics of ion-conducting membranes. This supports the development of future gas sensors, ion-based data storage and micro energy converters, such as fuel cells-and potentially a range of other as yet unknown applications in the promising field of ionics.##
###For more information, please click herecontacts: Dr. Jennifer Ruppwriteemail('mat. ethz. ch','jennifer. rupp';'41-792-900-697copyright ETH Zurichissuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.
Columbia engineers and colleagues create bright, visible light emission from one-atom thick carbon June 15th, 2015energy Designer electronics out of the printer:
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