#Researchers Advance Ability to Control and Harness Power of Light on the Nanoscale When a duck paddles across a pond or a supersonic plane flies through the sky, it leaves a wake in its path.
The discovery, published today in the journal Nature Nanotechnology, was made in the lab of Federico Capasso, the Robert L. Wallace Professor of Applied Physics and Vinton Hayes Senior Research Fellow in Electrical engineering at the Harvard John A. Paulson School of engineering and Applied science (SEAS)."
Nano-optics is a major part of the future of nanotechnology and this research furthers our ability to control
and harness the power of light on the nanoscale.""The creation and control of surface plasmon wakes could lead to new types of plasmonic couplers
or focus light at the nanoscale. Surface plasmons are confined to the surface of a metal.
The metamaterial, a nanostructure of rotated slits etched into a gold film, changes the phase of the surface plasmons generated at each slit relative to each other
The nanostructure also acts like the boat's rudder, allowing the wakes to be steered by controlling the speed of the running wave.
#Gold nanoparticle Coating on Cotton Fibers Can Help Kill Bacteria Juan Hinestroza and his students live in a cotton-soft nano world,
who directs the Textiles Nanotechnology Laboratory at Cornell. n a nanoscale world and that is our world we can control cellulose-based materials one atom at a time.
Taking advantage of cotton irregular topography, Hinestroza and his students added conformal coatings of gold nanoparticles,
Synthesizing nanoparticles and attaching them to cotton not only creates color on fiber surfaces without the use of dyes,
can be manipulated at the nano level to build nanoscale cages that are the exact same size as the gas they are trying to capture. e wanted to harness the power of these molecules to absorb gases
#Applied Nanotech Tests Ballistic, Blast-Resistant Armor Panels with Printed Electronic Antennas Applied Nanotech, Inc. ANI), a PEN Inc. company (PEN), announces successful completion
"Applied Nanotech and the university partners have made impressive technology strides to create new applications for our existing product line,
"says Dr. Richard Fink, President, Applied Nanotech.""This success demonstrates our comprehensive capabilities as the PEN design center.""
these gaps are incredibly small at just 25 nanometres wide 3, 000 times thinner than a human hair.
Taketoshi Minato (Tohoku Univ. and RIKEN, currently Kyoto University) commented that"The new reaction pathway could be exploited in nanoscale switching devices and hydrogen storage technology.
said UC San diego Nanoengineering Ph d. candidate Aliaksandr (Alex) Zaretski. t has been known for years that graphene is useful as a water desalination membrane.
We can introduce nanopores into a monolayer of graphene, push large quantities of salt water through and the salt will be rejected on the basis of size
#Silver-Ion Infused Lignin Nanoparticles Effectively Kill Bacteria Orlin Velev, an engineer at NC State engineer,
along with other researchers developed nanoscale particles that introduce silver antimicrobial potency to a biocompatible lignin core.
The silver-ion infused lignin nanoparticles, coated with a layer of charged polymer that aids the particles to stick to the target microbes,
When the targeted bacteria are wiped out by nanoparticles, silver gets depleted from these particles. Upon disposal, the rest of the particles also degrade easily due to their biocompatible lignin core.
People have been interested in using silver nanoparticles for antimicrobial purposes, but there are lingering concerns about their environmental impact due to the long-term effects of the used metal nanoparticles released in the environment.
We show here an inexpensive and environmentally responsible method to make effective antimicrobials with biomaterial cores.
The nanoparticles infused with silver ions were utilized to attack Pseudomonas aeruginosa, disease-causing bacteria; E coli, a bacterial species that cause food poisoning;
All these bacteria were destroyed by the newly developed nanoparticles. Using this latest technique, researchers can easily modify the nanoparticle recipe to target certain microbes.
According to Alexander Richter, first author of the paper and a Ph d. candidate at NC State who received the 2015 Lemelson-MIT prize,
the nanoparticles can form the basis for developing pesticide products that reduce risk, have minimal environmental impact,
#New Method to Visualize Topological Insulators at the Nanoscale Using Large particle accelerator Scientists trying to improve the semiconductors that power our electronic devices have focused on a technology called spintronics as one especially promising area of research.
The UCLA researchers have overcome that challenge with a new method to visualize topological insulators at the nanoscale.
and smaller, said Antony Orth, a researcher formerly at the Rowland Institute, Harvard university in Cambridge and now with the ARC Centre for Nanoscale Biophotonics,
#Breakthrough Imaging Technique Reveals Unprecedented Details of Nanocrystal Structures An international research team, co-headed by Hans Elmlund,
an associate professor from the Monash University ARC Centre of Excellence in Advanced Molecular Imaging, has devised a breakthrough imaging technique for capturing the 3d structures of nanocrystals,
and Princeton universities have played also a role in the development of this innovative technique, called D Structure Identification of Nanoparticles by Graphene Liquid Cell EM (SINGLE),
Metallic nanoparticles have dimensions in the nanometer range which makes it impossible to visualize their structure.
along with its application in the characterization of the 3d structures of nanoparticles. With the integration of three recently designed components, the novel imaging method delivers a performance far superior than earlier techniques.
It is capable of capturing movies of the nanoparticle when they spin around in solution. A 3d modeling approach called PRIME is the final component,
and this can generate 3d computer models of individual nanoparticles using the movies captured. The movie clips, posted along with the publication, show the unprecedented details of the structure of two platinum nanoparticles.
This in depth information allowed the research team to gain new insights into the growth of these highly useful particles at individual atom level.
or at least highly symmetrical platinum nanocrystals. t was surprising to learn that they form asymmetrical multi-domain structures,
Exploring how these nanoparticles form and evolve, and characterizing how they go through the transitions to achieve their final form are the next steps of the research team. t is important for us to understand this,
#Simpler Thermodynamic Approach Could Help Improve the Performance of Graphene-Based Nanoelectronic Devices The researchers found that the energy of ultrafast electrical currents passing through graphene is converted very efficiently into electron heat,
graphene finds a multitude of applications in modern nanoelectronics. They range from highly efficient detectors for optical
pushing their response times to be as short as a picosecond. he results of this study will help improve the performance of graphene-based nanoelectronic devices such as ultra-high speed transistors and photodetectorssays Professor Dmitry Turchinovich,
#Gallium Phosphide Nanowires Significantly Increase Efficiency of Solar fuel Cells The solar cell made of gallium phosphide (Gap) generates clean fuel hydrogen gas from Water gap is a compound containing phosphide and gallium which also acts
If the gallium phosphide is processed in the form of tiny nanowires, the efficiency of the solar cell can be increased tenfold without using considerable amounts of costly material.
The team resolved this issue by fabricating a network of small Gap nanowires which measured 90nm in width and 500nm in length.
or the nanowires we needed ten thousand less precious Gap material than in cells with a flat surface.
#Sticky-Flare Nanotechnology Reveals RNA Misregulation in Living Cells A new technology--called"Sticky-flares"--developed by nanomedicine experts at Northwestern University offers the first real-time method to track
"said Chad A. Mirkin, a nanomedicine expert and corresponding author of the study.""We hope that many more researchers will be able to use this platform to increase our understanding of RNA function inside cells."
Sticky-flares are tiny spherical nucleic acid gold nanoparticle conjugates that can enter living cells and target and transfer a fluorescent reporter or"tracking device"to RNA transcripts.
#Nanolock Signs Agreement to License Patents and Related Anti-Biofilm Nanoparticles to Reduce Antimicrobial Resistance Nanolock,
#Novel Method Utilizes Nanoparticles and UV LIGHT to Isolate, Extract Contaminants In a new paper published this week in Nature Communications,
researchers from MIT and the Federal University of Goiás in Brazil demonstrate a novel method for using nanoparticles
They initially sought to develop nanoparticles that could be used to deliver drugs to cancer cells. Brandl had synthesized previously polymers that could be cleaved apart by exposure to UV LIGHT.
Nanoparticles made from these polymers have a hydrophobic core and a hydrophilic shell. Due to molecular-scale forces
in a solution hydrophobic pollutant molecules move toward the hydrophobic nanoparticles, and adsorb onto their surface,
If left alone, these nanomaterials would remain suspended and dispersed evenly in water. But when exposed to UV LIGHT,
according to the researchers, was confirming that small molecules do indeed adsorb passively onto the surface of nanoparticles. o the best of our knowledge,
it is the first time that the interactions of small molecules with preformed nanoparticles can be measured directly,
we showed in a system that the adsorption of small molecules on the surface of the nanoparticles can be used for extraction of any kind,
as another example of a persistent pollutant that could potentially be remediated using these nanomaterials. nd for analytical applications where you don need as much volume to purify or concentrate,
The study also suggests the broader potential for adapting nanoscale drug-delivery techniques developed for use in environmental remediation. hat we can apply some of the highly sophisticated,
and an expert in nanoengineering for health care and medical applications. hen you think about field deployment,
They found that the coral-like structure removed around 2. 5 times more mercury from water than the traditional aluminium oxide nanoparticles."
UW-Madison chemical engineering Professor Manos Mavrikakis and his collaborators have turned to the nanoscale structure of particles,
researchers start with a nanoscale cube or octahedron of less expensive palladium, then deposit a few layers of platinum atoms on top of it.
interacting with more platinum atoms in the chemical reaction than would be the case on a flat sheet of platinum or traditional, nonhollowed nanoparticles."
it would be possible to reuse palladium atoms after etching agents remove them from the nanoparticle.
"Instead of having maybe not-so-well-defined nanoparticles, you can have these well-defined facets, "Herron says.
#Novel Fabrication Technique Helps Produce Ultra-Thin Hollow Platinum Nanocages for Fuel cells Researchers from Georgia Tech, University of Wisconsin-Madison, Oak ridge National Laboratory,
The new method allows the production of hollow platinum nanocages with ultra-thin walls. These atomic-scale layers of platinum are produced through a solution-based approach
porous structures that induce catalytic activity within and outside the nanocages. The layers are grown on templates of palladium nanocrystal templates.
The palladium is etched off leaving behind nanocages with a diameter of approximately 20 nm,
and between three and six atom-thin platinum layers. When these nanocage structures are used in fuel cell electrodes,
platinum's utilization efficiency can be increased by a factor of seven, which could affect the economic viability of the fuel cells. e can get the catalytic activity we need by using only a small fraction of the platinum that had been required before,
and Biochemistry and the School of Chemical and Biomolecular engineering at Georgia Tech. e have made hollow nanocages of platinum with walls as thin as a few atomic layers
This process also enables the use of larger nanocrystals that are less likely to be harmed by sintering-an aggregation process in
As both the inner and outer layers of the porous nanocages play a vital role in catalytic activity,
With the use of palladium nanocrystals as templates, the nanocages can be formed in either cubic or octahedral shapes.
The surface structure is controlled by the shape of the nanocages, which further leads to modifications in the catalytic activity.
Upon evaluating the durability of the platinum nanocages for oxygen-reduction reaction, the researchers observed that there is a fall in the catalytic activity by slightly more than one-third after 10,000 operating cycles.
Previous work carried out in increasing surface area was based on tiny platinum nanoparticles 2 or 3 nm in diameter.
we can use much larger particle sizes about 20 nanometers and we really don lose any surface area
However, the platinum nanocages could be used in other industrial processes such as hydrogenation. Besides carrying out experimental work at Georgia Tech,
researchers at Arizona State university and Oak ridge National Laboratory mapped the nanocage structures using their specialized microscopy facilities.
consisting of a gold layer on glass that is only 150 nanometers thick and an organic material
#New Tool Generates Images of Brain Inside at Nanoscale Resolution A new imaging tool developed by Boston scientists could do for the brain
In the first demonstration of how the technology works, published July 30 in the journal Cell, the researchers look inside the brain of an adult mouse at a scale previously unachievable, generating images at a nanoscale resolution.
The technique first deposits silver nanoparticles onto the individual fibres; copper can then be bound to the nanoparticles
and used to create a conductive layer. This allows complex circuits to be printed onto clothing,
from the Ludwig Maximilian University of Munich, said the work was a step towards"the dream of nanoscale 3d printing"."
"Details of the artificial molecular pump were published May 18 by the journal Nature Nanotechnology. Chuyang Cheng, a fourth-year graduate student in Stoddart's laboratory and first author of the paper, has spent his Ph d. studies researching molecules that mimic nature's biochemical machinery.
"The 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,
An international research team led by University at Buffalo engineers has developed nanotechnology that promises to make SERS simpler and more affordable.
and measure chemical and biological molecules using a broadband nanostructure that traps wide range of light,
The dielectric separates the mirror with tiny metal nanoparticles randomly spaced at the top of the substrate. t acts similar to a skeleton key.
and Applied science and California Nanosystems Institute has identified an unexpectedly general set of rules that determine which molecules can cause the immune system to become vulnerable to the autoimmune disorders lupus and psoriasis.
and include the smallest life forms On earth, microbes a mere 400 nanometers across. The number of new bacterial phyla is known equal to all the animal phyla On earth.
Once the researchers designed these ntelligent insulin nanoparticles, they had to figure out a way to administer them to patients with diabetes.
Gu created these icroneedlesusing the same hyaluronic acid that was a chief ingredient of the nanoparticles,
MEMS innovations Microchips Biotech made several innovations in the microelectromechanical systems (MEMS) manufacturing process to ensure the microchips could be commercialized.
#Scientists Use Nanoparticles to Shut down Mechanism that Drives Cancer Growth When scientists develop cancer therapies,
scientists from UCLA and City of Hope have become the first to inhibit the mechanism of Twist using nanoparticles to deliver a nucleic acid called small interfering RNA,
which was published online in the journal Nanomedicine: Nanotechnology, Biology and Medicine, was led by Jeffrey Zink and Fuyu Tamanoi, both members of the California Nanosystems Institute and Jonsson Comprehensive Cancer Center at UCLA,
and Carlotta Glackin of City of Hope Cancer Center. e were surprised truly by the dramatic effect of delivering Twist sirna,
the UCLA and City of Hope researchers attached sirna to the outside of a particular type of nanoparticle developed by Zink called mesoporous silica nanoparticles.
In the study, the nanoparticles were coated with a substance called polyethyleneimine, which acted to bind
the nanoparticles could accumulate in the tumor cells and the sirna could go to work inhibiting the cellsexpression of Twist.
The study found that giving mice sirna-loaded nanoparticles once a week for six weeks inhibited tumor growth,
The researchers now are working to design a next-generation nanoparticle that will enable delivery of Twist sirna
and cancer drug molecules in the same nanoparticle a potential one-two punch that would inhibit epithelialesenchymal transition and kill cancer cells.
Zink said the advance would be possible because of the structure of the specific type of nanoparticles the researchers are using. esoporous silica nanoparticles contain thousands of pores
and delivery of anticancer drugs by the same nanoparticles that have attached sirna to their outsides,
who also is distinguished a UCLA professor of chemistry and biochemistry and a pioneer in the design and synthesis of multifunctional mesoporous silica nanoparticles u
these gaps are incredibly small at just 25 nanometres wide 3, 000 times thinner than a human hair.
A team of researchers from the California Nanosystems Institute at UCLA has developed a new mobile phone-based device that can read ELISA plates in the field with the same level of accuracy as the large machines normally found in clinical laboratories.
was led by Aydogan Ozcan, associate director of the California Nanosystems Institute, along with Dino Di Carlo, professor of bioengineering,
as well as the California Nanosystems Institute and the Jonsson Comprehensive Cancer Center. The other authors on the paper were UCLA graduate students Bingen Cortazar, Derek Tseng, Haydar Ozkan, Raymond Yan-Lok Chan, and Steve Feng;
including popular lab-on-a-chip devices. Capillary action draws water and other liquids into confined spaces such as tubes, straws, wicks and paper towels,
the paper authors wrote. his insight has implications for optimal design of microfluidic and lab-on-a-chip devices based on stimuli-responsive smart polymers.
The research has been published in the journal Microsystems & Nanoengineering, in an article headed"3d printed microelectronics for integrated circuitry and passive wireless sensors. e
from the school Bourns College of Engineering, involves a new paperlike material made from silicon in the form of spongy silicon nanofibers.
For those of you new to nanos, a nanometer is one billionth not one millionth of a meter,
so when you get down to the nanoscale, youe talking small. To put it another way,
each silicon nanofiber is more than 100 times thinner than your hair. That why, although each fiber is spongelike,
The Bourns team resolved that problem by upcycling silicon into a mass of nanofibers enabling the battery to cycle hundreds of times without degrading.
Carbon Coated Silicon Nanofiber Paper via Mg Reduction of Electrospun Sio2 Nanofibers, published in Nature Scientific Reports.
Meanwhile, keep your eye on another up-and-coming EV battery material, nanocellulose. What Now, Petroleum? The advantages of EV technology are becoming more and more apparent practically by the minute,
they also contain silica in a very favorable nanoscale arrangement. reed leaves exhibit well-defined sheetlike 3d hierarchical micro-structures,
the described 3d porous Si-C nanocomposite has a great potential as a practical anode material for Li-ion batteries.
-and nanoscale structures onto the surface of metal--building on earlier work that used laser-patterning to absorb light to render metal black--creating a material that both absorbs light
Two years ago, the US Special Operations Command (Ussocom) called on scientists to develop a suit reminiscent of the version seen in the Iron man films that uses nanotechnology
and bullets using Kevlar and nanotechnology. The suit would also give people Superman-like powers,
Some of the new bacteria are the smallest life forms yet to be discovered On earth just 400 nanometres across, about 250 times smaller than the width of a human hair.
A thin liquid crystal layer is sandwiched over a metallic nanostructure shaped like a microscopic egg carton that absorbs some light wavelengths
Nanowire...Forget the Insane Mode: Elon musk says Tesla's new...'We're changing the conversation from top speeds,
he schemes involve geometric transformation of 2d micro/nanostructures into extended 3d layouts by compressive buckling,
the Air force Office of Scientific research (AFOSR), the Center of Excellence for Nanotechnologies (CEGN) of King Abdul-Aziz City for Science and Technology (KACST), the German Research Council (DFG) and the TUM
the Air force Office of Scientific research (AFOSR), the Center of Excellence for Nanotechnologies (CEGN) of King Abdul-Aziz City for Science and Technology (KACST), the German Research Council (DFG) and the TUM
#Flexible nanogenerator harvests muscle movement to power mobile devices The consumer world is becoming powered by mobile devices,
The flexible nanogenerator resembles a small, stamp-sized patch that attaches to your skin. It uses your skin as a source of static electricity,
Recently, UCLA engineers created a superomniphobic surface that repelled all known liquids using by modifying a surface made of nanoscopic nails rather than applying some kind of special omniphobic coating.
Chunlei Guo and Anatoliy Vorobyev of the University Institute of Optics discovered a laser-patterning technique that etch nanoscopic structures onto a surface.
passivating film on the nanostructures by a process known as atomic layer deposition, and by integrating all of the metal contacts on the cell back side.
The Aalto University team results were published in Nature Nanotechnology s
#Quantum signatures of electronic transport in graphene discovered The key to making useful nanoelectronic devices from graphene is to first understand,
and then be able to control, the flow of electrons through tiny snippets of the material.
and frequencies in the GHZ, phased array optics is based on operating in the visible, with much smaller wavelengths and oscillations much faster (hundreds of nanometers and many hundreds of THZ,
#Breakthrough quantum dot hybrid LED is inexpensive and delivers vibrant color Light-emitting diodes (LEDS) are prevalent in everything from digital clocks to solar panels, traffic lights, electronic banners and signs, Christmas decorations,
cost-effective quantum dot (QD) hybrid LED could enable LED lighting system adoption on a mass scale.
University of Hiroshima (Japan) researchers created the new light-emitting diode using silicon quantum dot solution and a polymer solution on top of an indium-tin-oxide (ITO) glass ply that was used as the anode for the LED.
The silicon quantum dot solution was placed in the bottom of a glass vial that sat on a rotating stage.
The study is the first of its kind to produce silicon quantum dot LEDS by way of a solution-based process
Quantum dots are nanocrystals that emit light when xcitedbased on their size, and, when implemented in QLED TVS,
Quantum dot technology, while providing some insight into the future of lighting systems, has made also already its mark in the TV industry.
Sony worked with Quantum dot supplier QD Vision to produce its own QD TVS in 2013 under the riluminouslabel,
By confining water to the nanoscale in specially designed hydroscopic materials, it possible to convert energy from evaporation to mechanical work.
They created an all-new hybrid material that takes two photons of 980-nanometer infrared light shone onto it and p convertsthem into one photon of 550-nanometer orange yellow light.
an inorganic layer with semiconductor nanoparticles this absorbs the infrared light, but isn capable of directly passing it into the electricity generating process.
and prior attempts to use DNA to make nanoscale sculpture have required high levels of magnesium salt to keep the final shape from unraveling.
Up until now, most attempts at improving the stability of engineered DNA nanostructures have looked to use whole different versions of DNA, a class of synthetic nucleic acids collectively called XNA.
Then they carefully injected into the mix individual water droplets that had been infused with tiny magnetic nanoparticles.
A single electron caught in a semiconductor nanostructure can structure the most fundamental of building blocks for a quantum computer.
and nanoscale structures which causes water to bead effectively. he material is so strongly water-repellent the water actually gets bounced off.
a nanomedicine expert at Northwestern University and corresponding author of the study. e hope that many more researchers will be able to use this platform to increase our understanding of RNA function inside cells.
Sticky-flares are tiny spherical nucleic acid gold nanoparticle conjugates that can enter living cells and target and transfer a fluorescent reporter or racking deviceto RNA transcripts.
The National Institute of Arthritis and Musculoskeletal and Skin diseases and the Center for Cancer Nanotechnology Excellence initiative of the National institutes of health supported the work.
-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.
Thomas Sand Jespersen an associate professor at the University of Copenhagen who helped create the material says it's a way to make a perfect transition between the nanowire and a superconductor.
Nanowires are extremely thin nanocrystal threads used in the development of new electronic components like transistors and solar cells.
Part of the challenge of working with nanowires is creating a good transition between these nanowires and an electrical contact to the outside world.
Up until now researchers have cultured nanowires and the contact separately. However with the new approach both the quality and the reproducibility of the contact have improved considerably.
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.
Krogstrup says it is the ultimate limit to how perfect a transition one could imagine between a nanowire crystal and a contact.
He thinks it opens many opportunities to make new types of electronic components on the nanoscale to study the electrical properties with much greater precision than before In their publication in Nature Materials the research group has demonstrated this perfect contact
and its properties and has shown also that they can make a chip with billions of identical semiconductor-metal nanowire hybrids.
Overtext Web Module V3.0 Alpha
Copyright Semantic-Knowledge, 1994-2011