"Indigo-Clean#uses a narrow spectrum of visible indigo-colored light at an output of 405 nanometers (nm) on the light spectrum.
Researchers at the Institute of Bioengineering and Nanotechnology (IBN) of A*STAR have developed a drug-delivering hydrogel to treat chronic diseases such as hepatitis C a liver disease that kills around 500,000 people worldwide every year."
To fabricate their imager, the group employed existing microelectromechanical systems (MEMS) technology, which smartphones rely on for such functions as microphones and directional orientation.
transparent nanomaterial made from wood. Compared to other polymers like plastics, the wood nanomaterial is biocompatible
and has relatively low thermal expansion coefficient, which means the material won't change shape as the temperature changes.
He also was able to resolve the structure of hydrated 3dom hydrogels using nanoscale resolution X-ray microscopy (ZEISS Xradia 800 Ultra.
Deacon and his collaborators began the painstaking work of creating a tiny device, just a few hundred nanometers in size.
"The quantum dots, each around 100 nanometers in size, were grown at random positions on a semiconductor chip.
Korean Scientists at the Center for Nanoparticle Research, Institute for Basic Science (IBS) in Seoul,
thin slivers of silver nanowires. The silver nanowires are tiny, averaging#150 nm in diameter and#30 m in length (a human hair ranges from 17 to 181 m). The nanowires were mixed into a liquid elastic material
which is both soft and stretchy when dry. To ensure that the material remains tight on the target area while heating,
the team devised a 2-D interlocking coil pattern for the mesh structure. To make the mesh,
"There's a lot of talk about using graphene in electronics and small nanoscale devices, but they're all a ways away,
and a member of the Kavli Energy Nanosciences Institute, operated jointly by UC Berkeley and Berkeley Lab."The microphone and loudspeaker are some of the closest devices to commercial viability,
to promote the growth of silicon nanowires and to induce gold-based patterns in the silicon.
'In dividing cells, these gaps are incredibly small at just 25 nanometres wide--3, 000 times thinner than a human hair.
and Bioengineering have designed a nanoparticle transport system for gene delivery that destroys deadly brain gliomas in a rat model,
The nanoparticles are filled with genes for an enzyme that converts a prodrug called ganciclovir into a potent destroyer of the glioma cells.
"The ability to successfully deliver genes using these biodegradable nanoparticles, rather than potentially harmful viruses, is a significant step that reinvigorates the potential for gene therapy to treat deadly gliomas as well as other cancers."
Biodegradable nanoparticles have shown recently promise as a method to deliver genes into cells. Their use for delivery avoids many of the problems associated with viral gene delivery.
the first goal of the group was to develop a nanoparticle that could efficiently carry DNA encoding a gene known as HSVTK into cells.
the HSVTK-encoding nanoparticles were 100%effective in killing both of the glioma cell lines grown in the laboratory.
Because it is important that the nanoparticles spread throughout the entire tumor, they were infused into the rat gliomas using convection-enhanced delivery (CED).
which efficiently disperses the nanoparticles throughout the tumors. To test the tumor-killing ability of the system,
then CED was used to infuse the HSVTK-encoding nanoparticles into the rat gliomas, and systemic ganciclovir treatment continued for eight more days.
"The results provide the first demonstration of a successful non-viral nanomedicine method for HSVTK/ganciclovir treatment of brain cancer,"stated Green."
"Next steps will include enhancing the efficiency of this nanoparticle delivery system and evaluating the technology in additional brain cancer animal models."
and whether the nanoparticles could be administered successfully systemically --which could broaden the use of the therapy for a wide range of solid tumors and systemic cancers s
#Polymer mold makes perfect silicon nanostructures Using molds to shape things is as old as humanity.
In a breakthrough for nanoscience, Cornell polymer engineers have made such a mold for nanostructures that can shape liquid silicon out of an organic polymer material.
3-D, single crystal nanostructures. The advance is from the lab of Uli Wiesner, Professor of Engineering in the Department of Materials science and engineering,
and the researchers used this special ability of polymers to make a mold dotted with precisely shaped and sized nanopores.
This could lead to making perfect, single-crystal silicon nanostructures. They haven't done it yet,
Wiesner called the breakthrough"beautiful"and a possibly fundamental insight into studying nanoscale materials. In materials science, the goal is always to get well-defined structures that can be studied without interference from material defects.
Most self-assembled nanostructures today are either amorphous or polycrystalline--made up of more than one piece of a material with perfect order.
whether their properties are due to the nanostructure itself or whether they're dominated by defects in the material.
Today, nanotechnology allows incredibly detailed nanoscale etching, down to 10 nanometers on a silicon wafer.
But nanofabrication techniques like photolithography, in which a polymeric material is written with a structure that is etched into the silicon,
To make single crystal nanostructures there are two options: multiple etching or molding. Wiesner's group now has made the mold.
porous nanomaterials using specially structured molecules called block copolymers. They first used a carbon dioxide laser in Thompson's lab to"write"the nanoporous materials onto a silicon wafer.
A film, spin-coated on the wafer, contained a block copolymer, which directed the assembly of a polymer resin.
while the negative-tone resin was left behind to form the porous nanostructure. That became the mold."
#Nanoscale light-emitting device has big profile University of Wisconsin-Madison engineers have created a nanoscale device that can emit light as powerfully as an object 10,000 times its size.
and his collaborators describe a nanoscale device that drastically surpasses previous technology in its ability to scatter light.
They showed how a single nanoresonator can manipulate light to cast a very large"reflection."
"The nanoresonator's capacity to absorb and emit light energy is such that it can make itself--and, in applications,
Given the nanoresonator's capacity to absorb large amounts of light energy, the technology also has potential in applications that harvest the sun's energy with high efficiency.
Because the nanoresonator has a large optical cross-section--that is, an ability to emit light that dramatically exceeds its physical size--it can shed a lot of heat energy,
#Nanospheres shield chemo drugs, safely release high doses in response to tumor secretions Scientists have designed nanoparticles that release drugs in the presence of a class of proteins that enable cancers to metastasize.
and build that into a nanoscale carrier that can seek out a tumor and deliver a payload of drug,
In mice treated with the nanoparticles coated with peptides that are impervious to MMPS or given saline,
Callmann holds a fellowship through the Cancer Researchers in Nanotechnology Program at UC San diego. The National Institute of Biomedical Imaging
#Nanoparticles used to prevent inflammatory acne through slow-released nitric oxide GW researcher and dermatologist, Adam Friedman, M d,
and prevent acne through nanotechnology. This research, published in the Journal of Investigative Dermatology, identified that the nanoparticles were effective at killing Proprionobacterium acnes,
the gram positive bacteria associated with acne, and even more importantly, they inhibited the damaging inflammation that result in the large,
Utilizing an established nanotechnology capable of generating and releasing nitric oxide over time, Friedman and his research team at the Albert Einstein College of Medicine
which the nanoparticles could be a new way to tackle Acne, one of the most common dermatologic diseases affecting between 40-50 million people each year.
Dr Lu's team found the optical gap for monolayer phosphorene was 1. 75 electron volts,
corresponding to red light of a wavelength of 700 nanometers. As more layers were added, the optical gap decreased.
For instance, for five layers, the optical gap value was 0. 8 electron volts, a infrared wavelength of 1550 nanometres.
'"said Subramanian Sankaranarayanan, Argonne computational nanoscientist, who led the simulation work at the Argonne Leadership Computing Facility (ALCF), a DOE Office of Science User Facility.
and Diana Berman were studying the hybrid material in laboratory experiments at Argonne's Tribology Laboratory and the Center for Nanoscale Materials,
They tried incorporating nanodiamond particles into their simulations to see if the hard material could help stabilize the nanoscrolls
The graphene patches spontaneously rolled around the nanodiamonds, which held the scrolls in place and resulted in sustained superlubricity.
The simulation results fed into a new set of experiments with nanodiamonds that confirmed the same."
"Arrayunfortunately, the addition of nanodiamonds did not address the material's aversion to water. The simulations showed that water suppresses the formation of scrolls by increasing the adhesion of graphene to the surface.
and mechanical rotating seals for microelectromechanical and nanoelectromechanical systems. Adding to the material's appeal is a relatively simple
it would leave the graphene and nanodiamonds on one side of a moving part, and diamond-like carbon on the other side.
"Given the advent of computing resources like Aurora and the wide gamut of the available two-dimensional materials and nanoparticle types,
#Transparent, electrically conductive network of encapsulated silver nanowires The electrodes for connections on the"sunny side"of a solar cell need to be not just electrically conductive,
and silver particles with nanoscale dimensions oxidise particularly rapidly; meanwhile, indium is one of the rarest elements on earth crust
Mesh of silver nanowires Manuela Göbelt on the team of Prof. Silke Christiansen has developed now an elegant new solution using only a fraction of the silver
The doctoral student initially made a suspension of silver nanowires in ethanol using wet-chemistry techniques. She then transferred this suspension with a pipette onto a substrate, in this case a silicon solar cell.
the silver nanowires organise themselves into a loose mesh that remains transparent, yet dense enough to form uninterrupted current paths.
This process caused tiny AZO crystals to form on the silver nanowires, enveloped them completely, and finally filled in the interstices.
The silver nanowires measuring about 120 nanometres in diameter, were covered with a layer of about 100 nanometres of AZO
and encapsulated by this process. Quality map calculated Measurements of the electrical conductivity showed that the newly developed composite electrode is comparable to a conventional silver grid electrode.
However, its performance depends on how well the nanowires are interconnected, which is a function of the wire lengths and the concentration of silver nanowires in the suspension.
The scientists were able to specify the degree of networking in advance with computers. Using specially developed image analysis algorithms,
"We are investigating where a given continuous conductive path of nanowires is interrupted to see where the network is not yet optimum,
who heads the Institute of Nanoarchitectures for Energy conversion at HZB and additionally directs a project team at the Max Planck Institute for the Science of Light (MPL).
"The network of silver nanowires is so fine that almost no light for solar energy conversion is lost in the cell due to the shadow,
On the contrary, she hopes"it might even be possible for the silver nanowires to scatter light into the solar cell absorbers in a controlled fashion through
For their experiments, the researchers used thin films of gold that were 120 nanometers thick,
The light source was an array of off-the-shelf LEDS positioned beneath the PCR wells. The peak wavelength of the blue LED light was tuned 450 nanometers
And Yellow fever Researchers in the US have developed a silver nanoparticle-based paper test to simultaneously detect dengue, yellow fever and Ebola.
The test is made from strips of paper containing antibodies attached to triangular silver nanoparticles of varying size according to the disease they recognize
Silver nanoparticles appear as different colours according to their size, so when a patient serum sample migrates through the device,
Warren Chan, an expert in nanomaterials-based diagnostics at the University of Toronto in Canada
The work was published in Nature Nanotechnology on June 8. Neuroscientists still do not understand how the activities of individual brain cells translate to higher cognitive powers such as perception and emotion.
The Harvard team solved these problems by using a mesh of conductive polymer threads with either nanoscale electrodes
Nanowires that poke out can be connected to a computer to take recordings and stimulate cells. So far, the researchers have implanted meshes consisting of 16 electrical elements into two brain regions of anaesthetized mice
and to add hairpin-shaped nanowire probes to the mesh to record electrical activity inside and outside cells.
In a recent paper, published in the journal Nature Nanotechnology a team of Harvard researchers describe the creation of a flexible nanowire mesh with nanoscale electrodes
or transistors placed at each wired junction. The mesh is malleable,"soft as silk, "and spacious, allowing it to naturally incorporate into the brain
Nanowires connecting the mesh with computers in the outside world can either record brain activity or stimulate nearby neurons.
Big Blue's partners are Globalfoundries, Samsung and the State university of New york Polytechnic institute's Colleges of Nanoscale Science and Engineering (SUNY Poly CNSE.
-and nanoscale structures to give the metals their new properties. This work builds on earlier research by the team in which they used a similar laser-patterning technique that turned metals black.
so Bailie did it manually. e used a sheet of plastic with silver nanowires on it, he said. hen we built a tool that uses pressure to transfer the nanowires onto the perovskite cell, kind of like a temporary tattoo.
You just need to rub it to transfer the film. Remarkable efficiency For the experiment, the Stanford team stacked a perovskite solar cell with an efficiency of a 12.7 percent on top of a low-quality silicon cell with an efficiency of just 11.4 percent. y combining two cells
Ripples, wrinkles and sub-10-nanometer pores in the surface and atomic-level imperfections give LIG its ability to store a lot of energy.
Tour is the T. T. and W. F. Chao Chair in Chemistry as well as a professor of materials science and nanoengineering and of computer science and a member of the Richard E. Smalley Institute for Nanoscale Science and Technology.
#Carbon nanotube finding could lead to flexible electronics with longer battery life University of Wisconsin-Madison materials engineers have made a significant leap toward creating higher-performance electronics with improved battery life and the ability to flex
the team has reported the highest-performing carbon nanotube transistors ever demonstrated. In addition to paving the way for improved consumer electronics,
Gopalan and their students reported transistors with an on-off ratio that 1, 000 times better and a conductance that 100 times better than previous state-of-the-art carbon nanotube transistors. arbon nanotubes are very strong and very flexible,
because metallic nanotube impurities act like copper wires and hortthe device. Researchers have struggled also to control the placement and alignment of nanotubes.
Until now, these two challenges have limited the development of high-performance carbon nanotube transistors. Building on more than two decades of carbon nanotube research in the field
the UW-Madison team drew on cutting-edge technologies that use polymers to selectively sort out the semiconducting nanotubes,
achieving a solution of ultra-high-purity semiconducting carbon nanotubes. Previous techniques to align the nanotubes resulted in less than-desirable packing density,
or how close the nanotubes are to one another when they are assembled in a film. However, the UW-Madison researchers pioneered a new technique,
called floating evaporative self-assembly, or FESA, which they described earlier in 2014 in the ACS journal Langmuir.
In that technique, researchers exploited a self-assembly phenomenon triggered by rapidly evaporating a carbon nanotube solution.
The team most recent advance also brings the field closer to realizing carbon nanotube transistors as a feasible replacement for silicon transistors in computer chips and in high-frequency communication devices,
which are rapidly approaching their physical scaling and performance limits. he advance enables new types of electronics that aren possible with the more brittle materials manufacturers are currently using.
wee really made a leap in carbon nanotube transistors. Our carbon nanotube transistors are an order of magnitude better in conductance than the best thin film transistor technologies currently being used commercially
while still switching on and off like a transistor is supposed to function. The researchers have patented their technology through the Wisconsin Alumni Research Foundation
In new findings the researchers have demonstrated how attaching nanodiamonds containing itrogen-vacancy centersto the new metamaterial further enhances the production of single photons, workhorses of quantum information processing,
cryptography and communications technologies. hese results indicate that the brightness of the nanodiamond-based single-photon emitter could be enhanced substantially by placing such an emitter on the surface of the hyperbolic metamaterial,
Placing a nanodiamond containing an NV center on the surface of hyperbolic metamaterials not only enhances the emission of photons,
He and Kildishev are working with a team of researchers led by Vladimir M. Shalaev, scientific director of nanophotonics at Purdue Birck Nanotechnology Center and a distinguished professor of electrical and computer engineering,
the optical metamaterials owe their unusual potential to precision engineering on the scale of nanometers. Quantum computers would take advantage of phenomena described by quantum theory called uperpositionand ntanglement.
Future research may include work to improve the system with devices that combine the hyperbolic metamaterial with nanoantennas
Their discovery that nanosheets of manganese dioxide can maintain a rechargable sulphur cathode helps to overcome a primary hurdle to building a Li-S battery.
Nazar group is known best for their 2009 Nature Materials paper demonstrating the feasibility of a Li-S battery using nanomaterials.
While the researchers found since then that nanosheets of manganese dioxide work even better than titanium oxides
They found that the oxygenated surface of the ultrathin manganese dioxide nanosheet chemically recycles the sulphides in a two-step process involving a surface-bound intermediate, polythiosulfate.
Their work was published this week in the journal Nature Nanotechnology. Until a few years ago, human-made silicene was a purely theoretical material.
and added a nanometer-thick layer of alumina on top. Because of these protective layers the team could safely peel it of its base and transfer it silverside-up to an oxidized-silicon substrate.
Inside the fibre however there is a carefully designed nanostructure which allows short wavelengths to travel through the fibre faster than longer ones.
The nanostructure inside the fibre is called agomewhich is Japanese for asket weave This special fibre that allows undistorted transmission of these extremely short pulses was designed
#Nanoscale mirrored cavities amplify connect quantum memories The idea of computing systems based on controlling atomic spins just got a boost from new research performed at the Massachusetts institute of technology (MIT) and the U s. Department of energy (DOE) Brookhaven National Laboratory.
Photons that enter these nanoscale funhouses bounce back and forth up to 10 000 times, greatly enhancing their chance of interacting with the electrons in the NV center.
Scientists at the Center for Functional Nanomaterials (CFN), a DOE Office of Science User Facility at Brookhaven Lab, helped to fabricate
Photons that enter these nanoscale funhouses bounce back and forth up to 10,000 times, greatly enhancing their chance of interacting with the electrons in the NV center.
In our case, we overcame the problem that hundred-nanometer-thick diamond membranes are too small and too uneven.
about 20 nanometers in size the same size range as the smallest features that can now be produced in microchips.
and uses it to push the rings together. he tiny molecular machine threads the rings around a nanoscopic chain a sort of axle and squeezes the rings together,
with only a few nanometers separating them. At present, the artificial molecular pump is able to force only two rings together,
clear nanocellulose paper made out of wood flour and infused it with biocompatible quantum dots tiny, semiconducting crystals made out of zinc and selenium.
#Engineering Phase changes in Nanoparticle Arrays Scientists at the U s. Department of energy Brookhaven National Laboratory have taken just a big step toward the goal of engineering dynamic nanomaterials
In a paper appearing innature Materials, they describe a way to selectively rearrange the nanoparticles in three-dimensional arrays to produce different configurations,
Introducing eprogrammingdna strands into an already assembled nanoparticle array triggers a transition from a other phase,
Such phase-changes could potentially be used to switch a material properties on demand. ne of the goals in nanoparticle self-assembly has been to create structures by design,
who led the work at Brookhavencenter for Functional Nanomaterials (CFN), a DOE Office of Science User Facility. ntil now,
DNA-directed rearrangementthis latest advance in nanoscale engineering builds on the team previous work developing ways to get nanoparticles to self-assemble into complex composite arrays,
they started with an assembly of nanoparticles already linked in a regular array by the complementary binding of the A t, G,
or a combination of these forces between particles. e know that properties of materials built from nanoparticles are strongly dependent on their arrangements,
the reprogramming DNA strands adhere to open binding sites on the already assembled nanoparticles. These strands exert additional forces on the linked-up nanoparticles. y introducing different types of reprogramming DNA strands,
we modify the DNA shells surrounding the nanoparticles, explained CFN postdoctoral fellow Yugang Zhang, the lead author on the paper. ltering these shells can selectively shift the particle-particle interactions,
either by increasing both attraction and repulsion, or by separately increasing only attraction or only repulsion.
the team demonstrated that they could switch their original nanoparticle array, the otherphase, into multiple different daughter phases with precision control.
and accompanying theoretical analysis confirm that reprogramming DNA-mediated interactions among nanoparticles is a viable way to achieve this goal. ource:
The team, from the Centre for Nanoscale Biophotonics (CNBP), an Australian Research Council (ARC) Centre of Excellence, created a simple,
A free application to convert your smartphone into a bio-sensing readout device will be available for download from the Centre for Nanoscale Biophotonics web site www. cnbp. org. au/smartphone biosensing c
Non-aqueous solvent supports DNA NANOTECHNOLOGY Scientists around the world are using the programmability of DNA to assemble complex nanometer scale structures.
Researchers at the Georgia Institute of technology have shown now that they can assemble DNA NANOSTRUCTURES in a solvent containing no water.
The research could open up new applications for DNA NANOTECHNOLOGY, and help apply DNA technology to the fabrication of nanoscale semiconductor and plasmonic structures.
Sponsored by the National Science Foundation and NASA, the research will be published as the cover story in Volume 54, Issue 23 of the journal Angewandte Chemie International Edition.
NA nanotechnology structures are getting more and more complex, and this solvent could help researchers that are working in this growing field,
we have shown that DNA NANOSTRUCTURES can be assembled in a water-free solvent, and that we can mix water with the same solvent to speed up the assembly.
The assembly rate of DNA NANOSTRUCTURES can be very slow, and depends strongly on temperature. Raising the temperature increases this rate,
This solvent also offers enhanced properties for nanotechnology and for the stability of these nanomaterials in solution.
Gállego had worked in DNA NANOTECHNOLOGY before coming to Georgia Tech, and wasconvinced that alternative solvents could advance this field.
At Georgia Tech he evaluated new solvents for use with DNA NANOSTRUCTURES solvents that had been designed for other purposes.
Structures that fail to completely assemble are a major source of low yields in the DNA nanofabrication process. his solvent could provide a new tool to make more complicated designs with DNA
he added. inetic traps are among the bottlenecks for producing more complicated DNA NANOSTRUCTURES. Glycholine is miscible in water,
A key feature of the new solvent system is that it does not require changes to existing DNA NANOTECHNOLOGY designs that were developed for water. ou can go back
The solvent system could improve the combined use of metallic nanoparticles and DNA based materials. In the typical aqueous solvents where DNA NANOTECHNOLOGY is performed,
nanoparticles are prone to aggregation. The solvent low volatility could also allow storage of assembled DNA structures without the concern that a water-based medium would dry out.
The research team, which also included Martha Grover from Georgia Tech School of Chemical & Biomolecular engineering, has used so far the solvent to assemble three structures,
and investigate other solvents that may have additional properties attractive for nanotechnology applications. e were confident all along that we would find a solvent that would be compatible with existing DNA NANOTECHNOLOGY, added Hud,
because DNA NANOTECHNOLOGY was developed in water. The research on water-free solvents grew out of Georgia Tech research into the origins of life.
while also having applications in nanotechnology. n
#DNA mutations get harder to hide Rice university researchers have developed a method to detect rare DNA mutations with an approach hundreds of times more powerful than current methods.
has been developing sustainable nanomaterials since 2009. f you take a big tree and cut it down to the individual fiber,
These images show differential conductance through the quantum dot as a function of the gate voltage that controls the number of electrons in the dot (x-axis) and the applied magnetic field (y-axis).
Professor of Chemistry, an international team of researchers developed a method for fabricating nanoscale electronic scaffolds that can be injected via syringe.
The study is described in a June 8 paper in Nature Nanotechnology. Contributing to the work were Jia Liu, Tian-Ming Fu, Zengguang Cheng, Guosong Hong, Tao Zhou, Lihua Jin, Madhavi Duvvuri, Zhe Jiang, Peter
researchers lay out a mesh of nanowires sandwiched in layers of organic polymer. The first layer is dissolved then, leaving the flexible mesh,
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