The material is made of graphene nanoribbons atom-thick strips of carbon created by splitting nanotubes a process also invented by the Tour lab
The new films are between 50 and 200 nanometers thick--a human hair is about 50000 nanometers thick
He is a member of the Richard E. Smalley Institute for Nanoscale Science and Technology.
and engineers at Penn State the Hungarian Academy of Sciences the Forest Research Institute in Matrafured Hungary and the USDA--created the decoys using a bioreplication process with nanoscale fidelity.
The finished bioreplicated decoys retained the surface texture of the beetle at the nanoscale. Additionally we painted some decoys a metallic green.
According to Domingue the light-scattering properties of the beetle's shell--which the team experimentally demonstrated using a white laser--made the nano-bioreplicated decoys more lifelike and therefore more attractive to males than the non-textured 3d printed decoy.
Acid-free approach leads to strong conductive carbon threadsthe very idea of fibers made of carbon nanotubes is neat
The single-walled carbon nanotubes in new fibers created at Rice line up like a fistful of uncooked spaghetti through a process designed by chemist Angel Martã and his colleagues.
The tricky bit according to Martã whose lab reported its results this month in the journal ACS Nano is keeping the densely packed nanotubes apart before they're drawn together into a fiber.
Left to their own devices carbon nanotubes form clumps that are perfectly wrong for turning into the kind of strong conductive fibers needed for projects ranging from nanoscale electronics to macro-scale power grids Earlier research at Rice by chemist
and chemical engineer Matteo Pasquali a co-author on the new paper used an acid dissolution process to keep the nanotubes separated until they could be spun into fibers.
Matteo's group used chlorosulfonic acid to protonate the surface of the nanotubes Martã said.
A process revealed last year by Martã and lead authors Chengmin Jiang a graduate student and Avishek Saha a Rice alumnus starts with negatively charging carbon nanotubes by infusing them with potassium a metal and turning
otherwise dampen the nanotubes'ability to repel one another. Put enough nanotubes into such a solution and they're caught between the repellant forces
and an inability to move in a crowded environment Martã said. They're forced to align--a defining property of liquid crystals
and tightly binds the nanotubes together Martã said. But to make macroscopic materials the Martã team needed to pack many more nanotubes into the solution than in previous experiments.
As you start increasing the concentration the number of nanotubes in the liquid crystalline phase becomes more abundant than those in the isotropic (disordered) phase and that's exactly
what we needed Martã said. The researchers discovered that 40 milligrams of nanotubes per milliliter gave them a thick gel after mixing at high speed
and filtering out whatever large clumps remained. It's like a centrifuge together with a rotary drum Martã said of the mixing gear.
and the team is investigating ways to improve their electrical properties through doping the nanotubes with iodide.
which would have caused precipitation of the nanotubes he said. It turns out that this is not a showstopper
because we want the nanotubes to precipitate and stick to each other as soon as they exit the sealed system through the needle.
#Combining antibodies, iron nanoparticles and magnets steers stem cells to injured organsresearchers at the Cedars-Sinai Heart Institute infused antibody-studded iron nanoparticles into the bloodstream to treat
The combined nanoparticle enabled precise localization of the body's own stem cells to the injured heart muscle.
In an attempt to target healing stem cells to the site of the injury researchers coated iron nanoparticles with two kinds of antibodies proteins that recognize
After the nanoparticles were infused into the bloodstream they successfully tracked to the injured area and initiated healing.
In a paper in the American Chemical Society journal Nano Letters the Rice team analyzed the properties of elemental bonds between semiconducting phosphorus atoms in 2-D sheets.
Yakobson is Rice's Karl F. Hasselmann Professor of Materials Science and Nanoengineering a professor of chemistry and a member of Rice's Richard E. Smalley Institute for Nanoscale Science and Technology.
and functions of nanomaterialsby â#drawingâ##micropatterns on nanomaterials using a focused laser beam scientists could modify properties of nanomaterials for effective applications in photonic and optoelectric applications.
The challenges faced by researchers in modifying properties of nanomaterials for application in devices may be addressed by a simple technique thanks to recent innovative studies conducted by scientists from the National University of Singapore (NUS.
Instead of focusing sunlight we can focus laser beam onto a wide variety of nanomaterials and study effects of the focused laser beam has on these materials. â#Micropatterns â#drawnâ##on Mos2 films could enhance electrical conductivity
This innovation was published first online in the journal ACS Nano on 24 may 2014. Hidden images â#drawnâ##by focused laser beam on silicon nanowires could improve optical functionalitiesin a related study published in the journal Scientific Reports on 13 may 2014 Prof Sow led
another team of researchers from the NUS Faculty of science in collaboration with scientists from Hong kong Baptist University to investigate how â#drawingâ##micropatterns on mesoporous silicon nanowires could change the properties of nanowires and advance their applications.
The team scanned a focused laser beam rapidly onto an array of mesoporous silicon nanowires which are packed closely like the tightly woven threads of a carpet.
They found that the focused laser beam could modify the optical properties of the nanowires causing them to emit greenish-blue fluorescence light.
This is the first observation of such a laser-modified behaviour from the mesoporous silicon nanowires to be reported.
 The researchers systematically studied the laser-induced modification to gain insights into establishing control over the optical properties of the mesoporous silicon nanowires.
Their understanding enabled them to â#drawâ##a wide variety of micropatterns with different optical functionalities using the focused laser beam.
To put their findings to the test the researchers engineered the functional components of the nanowires with interesting applications.
To develop materials with properties that can cater to the industryâ##s demands Prof Sow together with his team of researchers will extend the versatile focused laser beam technique to more nanomaterials.
In a new paper available online in the American Chemical Society journal Nano Letters a Rice team led by chemist James Tour compared its RRAM technology to more than a dozen competing versions.
Researchers unzip nanotubes by shooting them at 15,000 mphcarbon nanotubes unzipped into graphene nanoribbons by a chemical process invented at Rice university are finding use in all kinds of projects
The Rice lab of materials scientist Pulickel Ajayan discovered that nanotubes that hit a target end first turn into mostly ragged clumps of atoms.
But nanotubes that happen to broadside the target unzip into handy ribbons that can be used in composite materials for strength
The Rice researchers led by graduate student Sehmus Ozden reported their finding in the American Chemical Society journal Nano Letters.
Until now we knew we could use mechanical forces to shorten and cut carbon nanotubes. This is the first time we have showed carbon nanotubes can be unzipped using mechanical forces.
The researchers fired pellets of randomly oriented multiwalled carbon nanotubes from a light gas gun built by the Rice lab of materials scientist Enrique Barrera with funding from NASA.
The pellets impacted an aluminum target in a vacuum chamber at about 15000 miles per hour. When they inspected the resulting carbon rubble they found nanotubes that smashed into the target end first
or at a sharp angle simply deformed into a crumpled nanotube. But tubes that hit lengthwise actually split into ribbons with ragged edges.
We were investigating possible applications for carbon nanotubes in space when we got this result.
Single-wall nanotubes do just the opposite; when the tube flattens the bottom wall hits the inside of the top wall
The researchers said 70 to 80 percent of the nanotubes in a pellet unzip to one degree or another.
Published in the journal ACS Nano the Monash University research shows for the first time detailed insights into the structure of milk during digestion.
The Rice material a nanoporous solid of carbon with nitrogen or sulfur is inexpensive and simple to produce compared with the liquid amine-based scrubbers used now Tour said.
Even without the kind of pressure needed to make macroscale diamonds the energy knocked loose hydrogen atoms to prompt a chain reaction between layers of graphite in the coal that resulted in diamonds between 2 and 10 nanometers wide.
But the most nano of the nanodiamonds were seen to fade away under the power of the electron beam in a succession of images taken over 30 seconds.
There is a window of stability for diamonds within the range of 19-52 angstroms (tenths of a nanometer) beyond
Stable nanodiamonds up to 20 nanometers in size can be formed in hydrogenated anthracite they found though the smallest nanodiamonds were continued unstable under electron-beam radiation.
Yakobson is Rice's Karl F. Hasselmann Professor of Mechanical engineering and Materials Science a professor of chemistry and a member of the Richard E. Smalley Institute for Nanoscale Science and Technology.
and nanoparticles against foodborne pathogens associated with meat and poultry. The results demonstrate that the bacterial pathogens were inhibited significantly by the use of the antimicrobial films said Catherine Cutter professor of food science.
zinc oxide nanoparticles or silver nanoparticles. The compounds then were incorporated into edible films made from pullulan
and nanoparticles vacuum packaged and then evaluated for bacterial growth following refrigerated storage for up to three weeks.
or nanoparticles have the potential to improve the safety of refrigerated fresh or further-processed meat and poultry products said Cutter.
To fulfil these criteria ETH researchers used nanotechnology and nature's information storehouse DNA. A piece of artificial genetic material is the heart of the mini-label.
which has been published in the journal ACS Nano. To ensure that the particles can be fished out of the oil as quickly
they magnetised the tag by attaching iron oxide nanoparticles. Experiments in the lab showed that the tiny tags dispersed well in the oil
if the concentration of nanoparticles does not match the original value other oil--presumably substandard--must have been added.
when synthetic DNA nanoparticles are floating around in it? These are things that we already ingest today says Grass.
Nanoreporters tell sour oil from sweetscientists at Rice university have created a nanoscale detector that checks for
The nanoreporter is sized based on nanometer carbon material developed by a consortium of Rice labs led by chemist James Tour
When exposed to hydrogen sulfide the nanoparticles'fluorescent properties immediately change. When pumped out of a production well the particles can be analyzed with a spectrometer to determine the level of contamination This paper is a big step
because we're making our nanoreporters detect something that's not oil Wong said suggesting the possibility that nanoparticles may someday be able to capture sulfur compounds before they can be pumped to the surface.
We found the longer the PVA polymer chains the more stable the nanoparticles were in the high temperatures they're subjected to said Rice graduate student Chih-Chau Hwang co-lead author of the paper with fellow graduate student Gedeng Ruan.
along with DNA enveloped in nanoparticles. If the film is destroyed both the foam and the dye are released thereby rendering the cash useless.
The DNA nanoparticles that are released also mark the banknotes so that their path can be traced. Laboratory experiments with 5 euro banknotes have shown that the method is effective.
Conventional copper electrodes consist of individual nanoparticles that just sit on top of each other Kanan said. Oxide-derived copper on the other hand is made of copper nanocrystals that are linked all together in a continuous network with well-defined grain boundaries.
Our models suggest that the nanocrystalline network in the oxide-derived copper was critical for achieving these results.
and is described online in a new paper in the American Chemical Society journal ACS Nano.
As with many nanomaterials scientists have found that the physical properties of TMDCS change markedly when the material has nanoscale properties.
For example a slab of molybdenum diselenide that is even a micron thick has an indirect bandgap
Research to find the best nanofluid for heat transfera mixture of diamond nanoparticles and mineral oil easily outperforms other types of fluid created for heat-transfer applications according to new research by Rice university.
Rice scientists mixed very low concentrations of diamond particles (about 6 nanometers in diameter) with mineral oil to test the nanofluid's thermal conductivity
They found it to be much better than nanofluids that contain higher amounts of oxide nitride or carbide ceramics metals semiconductors carbon nanotubes and other composite materials.
Researchers have been looking since the late 1990s for efficient customizable nanofluids that offer a middle ground.
They use sub-100 nanometer particles in low-enough concentrations that they don't limit flow
Brownian motion and nanoparticle/fluid interactions play an important role Taha-Tijerina said. We observed enhancement in thermal conductivity with incremental changes in temperature and the amount of nanodiamonds used.
and some preliminary results have been published in ACS Nano Zhang said. He added that the next step is to contact manufacturers
Today's filtration membranes have nanoscale pores that are not something you can manufacture in a garage very easily Karnik says.
Before experimenting with contaminated water the group used water mixed with red ink particles ranging from 70 to 500 nanometers in size.
This experiment showed that sapwood is naturally able to filter out particles bigger than about 70 nanometers.
However in another experiment the team found that sapwood was unable to separate out 20-nanometer particles from water suggesting that there is a limit to the size of particles coniferous sapwood can filter.
Karnik says sapwood likely can filter most types of bacteria the smallest of which measure about 200 nanometers.
The particle growth in the diameter range between about three and one hundred nanometers requires low-volatile organic vapors as has been speculated.
which had taken not sufficiently into account the growth of nanoparticles caused by these compounds produced in boreal regions.
Scientists have known for decades that gases from pine trees can form particles that grow from just 1 nanometer in size to 100 nanometers in about a day.
and at 100 nanometers they are large enough to condense water vapor and prompt cloud formation.
and condenses onto small particles of just 3 nanometers. Researchers found so many of these molecules are produced that they can clump together
Theoretical physicist Boris Yakobson and his Rice colleagues found through exhaustive analysis that those who wish to control the chirality of nanotubes--the characteristic that determines their electrical properties--would be wise to look at other aspects of their growth.
In the study by Yakobson research scientist Evgeni Penev and postdoctoral researcher Vasilli Artyukhov that was published recently by the American Chemical Society journal ACS Nano the Rice researchers found that the elastic energy landscapes
To get a clear picture of how caps are related to nanotube chirality the Rice group embarked upon a detailed two-year census of the 4500 possible cap formations for nanotubes of just two diameters 0. 8
and 1 nanometer across 21 chiralities. The cap of every nanotube has six pentagons--none
Nanotubes can be one or the other or the chiral angle can be anything in between with a shifting range of electrical properties.
Ideally scientists could grow the specific kinds of nanotubes they need for an application but in reality they grow as a random assortment that must then be separated with a centrifuge or by other means.
Yakobson is Rice's Karl F. Hasselmann Professor of Mechanical engineering and Materials Science a professor of chemistry and a member of the Richard E. Smalley Institute for Nanoscale Science and Technology.
#New pomegranate-inspired design solves problems for lithium-ion batteriesan electrode designed like a pomegranate--with silicon nanoparticles clustered like seeds in a tough carbon rind--overcomes several remaining
and SLAC who led the research reported today in Nature Nanotechnology. Experiments showed our pomegranate-inspired anode operates at 97 percent capacity even after 1000 cycles of charging
Over the past eight years Cui's team has tackled the breakage problem by using silicon nanowires
or nanoparticles that are too small to break into even smaller bits and encasing the nanoparticles in carbon yolk shells that give them room to swell
and shrink during charging. The new study builds on that work. Graduate student Nian Liu and postdoctoral researcher Zhenda Lu used a microemulsion technique common in the oil paint
and find a cheaper source of silicon nanoparticles. One possible source is rice husks: They're unfit for human food produced by the millions of tons and 20 percent silicon dioxide by weight.
According to Liu they could be transformed into pure silicon nanoparticles relatively easily as his team recently described in Scientific Reports.
While individual nanotubes are capable of transmitting nearly 1000 times more current than copper the same tubes coalesced into a fiber using other technologies fail long before reaching that capacity.
Just a year ago the journal Science reported that Pasquali's lab in collaboration with scientists at the Dutch firm Teijin Aramid created a very strong conductive fiber out of carbon nanotubes.
Scientists working with nanoscale materials have thought long there's a better way to move electricity from here to there.
Certain types of carbon nanotubes can carry far more electricity than copper. The ideal cable would be made of long metallic armchair nanotubes that would transmit current over great distances with negligible loss
but such a cable is not feasible because it's not yet possible to manufacture pure armchairs in bulk Pasquali said.
and materials scientists working on carbon nanotubes. That has generated some confusion in the literature over the right comparisons to make he said.
Tsentalovich Kono and Pasquali are members of the Richard E. Smalley Institute for Nanoscale Science and Technology.
Plasmon-generated electrons timed moving from nanorods to grapheneplasmonic nanoparticles developed at Rice university are becoming known for their ability to turn light into heat
They suggest that the extraction of electrons generated by surface plasmons in metal nanoparticles may be optimized.
The work was reported recently in the American Chemical Society journal ACS Nano. We've looked at this process on a single-particle level said lead author Hoggard.
Dark-field scattering and photoluminescence spectroscopy of more than 200 nanoparticles helped them determine that it takes about 160 femtoseconds (quadrillionths of a second) for an electron to transfer from the particle to highly conducting graphene the single-atom-thick form of carbon.
but how fast usable electrons flow from plasmonic nanoparticles is understood little. The plasmon generates hot electrons that decay very quickly so intercepting them is a challenge he said.
That thought prompted Link's lab to embark upon the painstaking effort to analyze single nanoparticles.
and the shape of the nanoparticle Hoggard said. And it usually appears as a single peak for gold nanorods.
when nanoparticles are introduced into an electron-accepting environment which in this case is graphene. The Rice lab hopes to optimize the connection between the nanoparticles
and graphene or another substrate preferentially a semiconductor that will allow them to trap hot electrons.
The researchers reported their work yesterday in Nature Nanotechnology. Water evaporation is the largest power source in nature Sahin said.
-and nanostructured photoelectric devices as well as for semiconductor layers consisting of other materials says Mainz. But we continue to focus on kesterites
when a buckyball attaches to a gold surface in the optical nano antenna used to measure the effects of an electric current on intermolecular bonds through a technique called Raman spectroscopy.
Natelson's group built the nano antenna a few years ago to trap small numbers of molecules in a nanoscale gap between gold electrodes.
The nano antenna is able to detect the tone of detuned vibrations between atoms through surface-enhanced Raman spectroscopy (SERS) a technique that improves the readings from molecules
The discovery of buckyballs which earned a Nobel prize for two Rice professors kick-started the nanotechnology revolution.
and Molecular Foundry director Jeffrey Neaton a professor of physics at the University of California Berkeley and a member of the Kavli Energy Nanosciences Institute at Berkeley.
Apple bakes fitness deeper into its ipod nano device with Nike+Ten years after its debut, Apple is integrating fitness more deeply into its line of ipods.
On Tuesday, Apple announced that its seventh generation ipod nano will allow people to track their activity with Nike+.
The newest ipod nano has a square screen that can double as a watch. The difference is that it can hook up with the Nike+via an embedded receiver that's been baked into the device.
but Agrisolar relies on wavelengths between 361 and 368 nanometers. The company which is headquartered in Colorado
This morning we're reading about nanotechnology. 1.)From pomegranate peel to nanoparticles. Food waste is a growing problem in many parts of the world,
but discarded fruit peel, in the case of pomegranates, could be put to good use in the burgeoning field of nanotechnology according to research published in the International Journal of Nanoparticles. 2.)U s. Government Accountability Office
releases report on nanotechnology EHS research performance. From fiscal years 2006 to 2010, the National Science and Technology Council (NSTC) reported more than a doubling of National Nanotechnology Initiative (NNI) member agencies'funding for nanotechnology environmental
health, and safety (EHS) research. 3.)Nanotech innovations bring breakthroughs to market. The operators of a local scientific supply business hope they can help researchers find breakthrough developments in tiny tubes. 4.)Nanotechnology in the automotive industry.
Nano-enhanced materials are already beginning to improve the performance and cost-effectiveness of vehicles,
and this effect will only increase in the coming years, as harder, stronger, lighter nanomaterials become commercially available. 5.)Chemist explores nanotechnology in search of cheaper solar cells.
Luke Hanley is a big believer in harnessing solar energy to produce electricity. Doing it more efficiently is his goal.
U s. companies account for more than half of nanotechnology IP. Image credit: Zdenko Zivkovic Related: Could fireflies replace LED lighting?
Dressed to kill, one atom at a time Nanotubes development could double battery life Nano-advances behind new architectural products Scientists create functioning transistor from a single atom
which made its name from the launch of the Nano compact, the world's cheapest car,
 The team recently reported their findings in the Nanoscale. Hydrogen fuel is considered a clean fuel
the nanoparticles coalesced into tiny grains comprising numerous nanotwin domains. The resulting transparent lumps of cubic boron nitride (pictured) were riddled with nanotwin segments that are just 3. 8 nanometers thick on average.
Previous attempts have managed to reduce grain sizes to 14 nanometers. Those samples had measured a hardness of up to 108 gigapascals.
That s slightly harder than synthetic diamond but less hard than polycrystalline diamonds that are made of nanoscale grains.
The work was published in Nature today. Via Scientific American Image from Tian et al.
New system predicts most influential people on Twitterrepresentative Anthony Weiner (D-New york) needs to know about rumor centrality.
The kitchen nano gardennothing can be as frustrating as loitering and searching for fresh vegetables from the market.
the new Kitchen Nano Garden serves as an excellent way to grow fresh vegetables right in your kitchen, without the use of pesticides or fertilizers.
Just place the Kitchen Nano Garden beside the Kitchen counter and grow your favorite vegetables, herbs and flowers without any hassle.
Nano Garden employs LED lighting that promotes plant growth, without the need of sunlight. The water used
vibrations in the surrounding environment derived from the piezoelectric phenomenon could provide power for future nanoscale devices.
In the future, nanodevices could use zinc oxide nanowires that draw energy from vibrations such as from the flow of blood
Dr. Robert Freitas, author of the Nanomedicine series and senior research fellow at the Institute for Molecular Manufacturing, has described several potential food replacement technologies that are somewhat pill-like.
In the January-February 2010 issue of THE FUTURIST magazine, Freitas lays out his ideas for improving human health through nanotechnology. 2. Better Design.
according to results to be published in an upcoming issue of the Institute of Electrical and Electronics Engineers'Transactions on Nanotechnology (PDF).
The UW circuit is built from parts measuring 130 nanometers and it consumes on average just 10 nanowatts of power during operation (a nanowatt is one billionth of a watt)."
But the nanoscale is not just in size, but also in the energy and power consumption,"Parviz said."
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