#Researchers synthesize magnetic nanoparticles that could offer alternative to Rare earth magnets Abstract: A team of scientists at Virginia Commonwealth University has synthesized a powerful new magnetic material that could reduce the dependence of the United states
The new material consists of nanoparticles containing iron, cobalt and carbon atoms with a magnetic domain size of roughly 5 nanometers.
It can store information up to 790 kelvins with thermal and time-stable, long-range magnetic order,
Everett Carpenter, Ph d.,a professor in the Department of chemistry and director of the VCU's Nanoscience and Nanotechnology Program, said the new material is"already showing promise, even for applications beyond permanent magnets
A route to developing ultimate superconducting nanodevices A research group at Tohoku University has succeeded in fabricating an atomically thin,
but also paves the way for the development of next-generation nanoscale superconducting devices. The research results were published in Nature Materials on June 1
it obviously exceeds the record of other"high-Tc superconductors"such as fullerene (C60) superconductors (Tc 33 K) and Mgb2 (Tc 39k),
but also opens a route to developing an ultimate superconducting nanodevice consisting of atomic-size electronic parts.
They're widely expected to improve energy storage, sensors, nanoelectronics, catalysis and separations, but graphene aerogels are prohibitively expensive and difficult to produce for large-scale applications because of the complicated purification
Most other investigators who have studied the remarkable properties of microscopic spirals have done so by arranging discrete nanoparticles in a spiral pattern:
"finding a nanothermometer sensitive enough at this scale is a great step forward in the field of nanotechnology, with applications in biology, chemistry, physics and even in the diagnosis and treatment of diseases
while synthesizing nanoscale materials using simple and highly efficient flame technology. This baking of nanostructures has already been a great success using zinc oxide.
The recent findings concentrate on tin oxide, which opens up a wide field of possible new applications.
Synthesizing nanoscale materials takes place within high-tech laboratories, where scientists in full-body suits keep every grain of dust away from their sensitive innovations.
while synthesizing nanoscale materials using simple and highly efficient flame technology. This baking of nanostructures has already been a great success using zinc oxide.
The recent findings concentrate on tin oxide, which opens up a wide field of possible new applications.
such as belt-like nanostructures, exhibit much more application potential because of their high surface to volume ratio.
However, 1d nanostructures are still difficult to use, because integrating them in real devices is a challenging task.
we have developed three-dimensional (3d) macroscopic material from 1d tin oxide belt-like nanostructures. The resulting ceramic networks exhibit most of the nanoscale properties,
including flexibility. It can therefore be utilized freely for any desired application. We are pleased very that our recently introduced flame transport synthesis method on the basis of zinc oxide now enables the simple synthesis of interconnected 3d networks from tin oxide
says Dr Yogendra Kumar Mishra, group leader of the working group Functional Nanomaterials at Kiel University,
The fascinating part is the structure of the single belt-like nanostructures delivered by this synthesis on the basis of tin oxide crystal structure.
compares Professor Rainer Adelung, Chairperson of the Functional Nanomaterials group. And these long flat noodles grow together in a very specific way:
Development of such 3d network materials from tin oxide, with geometry determining defects made by flame transport synthesis at Kiel University is a very interesting step forward into the future of nanostructure growth and applications."#
www. facebook. com/kielunicopyright Alphagalileoissuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.
Full bibliographic information News and information Next-generation illumination using silicon quantum dot-based white-blue LED June 7th,
2015tappi Announces 2015 Nanotechnology Division Technical Award Winner June 6th, 2015discoveries Next-generation illumination using silicon quantum dot-based white-blue LED June 7th,
2015uab researchers design the most precise quantum thermometer to date: The device would be capable of measuring the temperature of a cell's interior June 7th, 2015ceramic Nanomembrane, New Material for Dehydration of Natural gas June 7th, 2015moving sector walls on the nano scale June 6th, 2015materials
2015tappi Announces 2015 Nanotechnology Division Technical Award Winner June 6th, 2015unlocking nanofibers potential: Prototype boosts production of versatile fibers fourfold,
2015announcements Next-generation illumination using silicon quantum dot-based white-blue LED June 7th, 2015uab researchers design the most precise quantum thermometer to date:
2015tappi Announces 2015 Nanotechnology Division Technical Award Winner June 6th, 2015interviews/Book reviews/Essays/Reports/Podcasts/Journals/White papers Next-generation illumination using silicon quantum dot-based white-blue LED June 7th,
2015uab researchers design the most precise quantum thermometer to date: The device would be capable of measuring the temperature of a cell's interior June 7th, 2015ceramic Nanomembrane, New Material for Dehydration of Natural gas June 7th, 2015moving sector walls on the nano scale June 6th,
The results create new opportunities for nanoscale bolometry and calorimetry and could have a strong impact in the performance of conventional graphene devices.
The research, led by ICREA Prof Sergio O. Valenzuela, Group Leader of the Physics and Engineering of Nanodevices Group and Dr. Juan F. Sierra,
creates new opportunities for nanoscale bolometry and calorimetry.#####For more information, please click herecontacts: Alicia Labianwriteemail('icn. cat','alicia. labian';
'Copyright ICN2ISSUERS of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.
2015graphene Haydale Subsidiary Changes Name & Creates New Aerospace Unit June 4th, 2015environmental Issues to Hamper Growth of Global Nanocomposites Market June 4th, 2015an inexpensive rival
2015production of Nanocomposites by Using Direct Nano-Welding of Micromaterials in Iran June 4th, 2015environmental Issues to Hamper Growth of Global Nanocomposites Market June 4th, 2015optical computing/Photonic computing New
2015dna Double Helix Does Double Duty in Assembling Arrays of Nanoparticles: Synthetic pieces of biological molecule form framework and glue for making nanoparticle clusters and arrays May 25th, 2015discoveries Tissue Engineering Scaffolds Produced from Natural Silk in Iran June 8th,
2015uab researchers design the most precise quantum thermometer to date: The device would be capable of measuring the temperature of a cell's interior June 7th,
2015next-generation illumination using silicon quantum dot-based white-blue LED June 7th, 2015uab researchers design the most precise quantum thermometer to date:
2015battery Technology/Capacitors/Generators/Piezoelectrics/Thermoelectrics/Energy storage Researchers synthesize magnetic nanoparticles that could offer alternative to Rare earth magnets June 1st,
Iranian researchers produced biocompatible and biodegradable nanocomposite scaffolds by using a type of natural silk with no cellular toxicity observed in the experiments.
In this research, nanocomposite scaffold was made of silk fibroin, chitosan and alumina through freeze drying method.
"The size of pores decreases due to the presence of alumina ceramic nanoparticles in the synthesis of the nanocomposite scaffold.
Therefore, the proposed nanocomposite scaffold is appropriate from the amount and porosity distribution points of view for the growth of gum fibroblast cells,"Dr. Abbas Teimouri, one of the researchers, stated.
According to the researcher, the mechanical strength, degradability, water sorption and inorganic bioactivity of the produced nanocomposite scaffold have been evaluated by carrying out various tests
Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content. Bookmark: News and information Diffusion and Remote Detection of Hot-Carriers in Graphene June 8th, 2015uab researchers design the most precise quantum thermometer to date:
#Ultrafast heat conduction can manipulate nanoscale magnets Researchers at the University of Illinois at Urbana-Champaign have uncovered physical mechanisms allowing the manipulation of magnetic information with heat.
and highly desirable way to manipulate magnetization at the nanoscale.""In our study, we make use of the fact that a heat current passing through a magnetic material creates a separation of electron spins.
and enables the manipulation of nanomagnets with spin currents rather than magnetic fields, "explained Gyung-Min Choi,
#Nanomaterial self-assembly imaged in real time A team of researchers from UC San diego, Florida State university and Pacific Northwest National Laboratories has visualized for the first time the growth of'nanoscale'chemical complexes in real time,
demonstrating that processes in liquids at the scale of one-billionth of a meter can be documented as they happen.
which will make possible many future advances in nanotechnology, is detailed in a paper published online today in the Journal of the American Chemical Society.
for example, to better understand the stepwise formation of nanostructures. Previously, scientists could examine changes in nanostructures only by looking at the large-scale alterations of a bulk population of particles
or by taking'screen shots'in a static fashion of individual nanostructures with electron microscopy.''That process is like taking photos every 10 minutes of a football game
and then trying to piece these photos together to tell the story of what is really a highly dynamic process,
'Until now, this was the state of the art in terms of how we could document how nanostructures formed. The development we describe in our paper demonstrates that these processes can be observed in real time,
by literally videoing these processes on the nanoscale level using an electron microscope.''The development employed a recently developed process called Liquid Cell Transmission Electron microscopy.
or TEM, has long been used by scientists to image nanoscale materials and understand nanoscale structure.
While advances in Liquid Cell TEM, or LCTEM, had permitted scientists to visualize the motion of nanoscale objects in liquids,
researchers had figured not yet out a way to use it to visualize the growth of complex self-assembled, chemical nanostructures.'
'We showed for the first time that this technique can be used to observe the growth of complex organic-inorganic hybrid materials,
'This demonstration marks a significant step forward in LCTEM becoming essential for our understanding of nanoscale processes for all materials in liquids.'
if these nanostructures would survive the experiment. This is necessary because materials are susceptible to being destroyed by the high energy electron beam that is used to image them.
'That is, length scales can be observed that are relevant to nanoscale materials and processes. In terms of imaging dynamics like this, we believe it will impact how nanotechnology is developed in the future.'#
'##The research project was supported by grants from the Department of energy's Office of Basic energy Sciences, the Department of defense and the National Science Foundation.##
'858-534-7572copyright University of California-San Diegoissuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.
News and information New composite material as CO2 sensor June 8th, 2015industrial Nanotech, Inc. Provides Update June 8th, 2015leti launches new Silicon Impulsetm FD-SOI Development Program,
-Legislation/Regulation/Funding/Policy Next-generation illumination using silicon quantum dot-based white-blue LED June 7th,
A route to developing ultimate superconducting nanodevices June 2nd, 2015self Assembly Researchers simulate behavior of'active matter'June 3rd, 2015engineering Phase changes in Nanoparticle Arrays:
and repulsive forces between DNA-linked particles to make dynamic, phase-shifting forms of nanomaterials May 25th, 2015scientists Use Nanoscale Building blocks and DNA'Glue'to Shape 3d Superlattices:
New approach to designing ordered composite materials for possible energy applications April 23rd, 2015advances in molecular electronics: Lights on--molecule on:
2015tissue Engineering Scaffolds Produced from Natural Silk in Iran June 8th, 2015announcements New composite material as CO2 sensor June 8th, 2015industrial Nanotech,
barrier films June 3rd, 2015measuring the mass of molecules on the nanoscale: By observing the shift in eigenstates of coupled microcantilevers,
researchers can measure nanogram-scale mass in a liquid environment with extreme accuracy June 2nd, 2015central Florida Company Garmor Achieves Graphene Production Milestone:
Garmor Inc, Increases Capacity for Manufacturing Graphene oxide at Customer Sites June 2nd, 2015military Production of Nanocomposites by Using Direct Nano-Welding of Micromaterials in Iran June 4th,
"Led by nanoscientist Ani Sumant of Argonne's Center for Nanoscale Materials (CNM) and Argonne Distinguished Fellow Ali Erdemir of Argonne's Energy systems Division, the five-person Argonne team
combined diamond nanoparticles, small patches of graphene-a two-dimensional single-sheet form of pure carbon-and a diamond-like carbon material to create superlubricity, a highly-desirable property in
as the graphene patches and diamond particles rub up against a large diamond-like carbon surface, the graphene rolls itself around the diamond particle, creating something that looks like a ball bearing on the nanoscopic level."
or"scrolls",the team found a way to translate the nanoscale superlubricity into a macroscale phenomenon.
The team used large-scale atomistic computations on the Mira supercomputer at the Argonne Leadership Computing Facility to prove that the effect could be seen not merely at the nanoscale but also at the macroscale."
therefore causing higher friction,"explained co-author Argonne computational nanoscientist Subramanian Sankaranarayanan. While the field of tribology has long been concerned with ways to reduce friction
"Sumant added,"will be crucial in finding ways to reduce friction in everything from engines or turbines to computer hard disks and microelectromechanical systems."#
'630-252-5593copyright Argonne National Laboratoryissuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.
The Center for Nanoscale Materials and the Argonne Leadership Computing Facility are DOE Office of Science User Facilities.
News and information A step towards a type 1 diabetes vaccine by using nanotherapy June 10th, 2015investigation of Optical Properties of Quantum dots in Presence of Magnetic, Electrical Fields June 10th,
2015haydale Subsidiary Changes Name & Creates New Aerospace Unit June 4th, 2015environmental Issues to Hamper Growth of Global Nanocomposites Market June 4th, 2015an inexpensive rival to graphene aerogels:
Scientists observe photographic exposure live at the nanoscale: Advanced method opens up new opportunities for investigation of dynamic processes June 9th, 2015mesoporous Particles for the Development of Drug Delivery System Safe to Human bodies June 9th, 2015mems MEMS Industry
2015researchers synthesize magnetic nanoparticles that could offer alternative to Rare earth magnets June 1st, 2015discoveries A step towards a type 1 diabetes vaccine by using nanotherapy June 10th, 2015investigation of Optical Properties of Quantum dots in Presence of Magnetic, Electrical Fields June 10th,
2015nanospace-Controlled Gold Material Created Using Molecular Technology June 9th, 2015stable Perovskite Solar cells Developed through Structural Simplification June 9th, 2015materials/Metamaterials Mesoporous Particles for the Development of Drug Delivery System Safe to Human bodies June 9th,
2015development of Gold nanoparticles That Control Osteogenic Differentiation of Stem Cells June 9th, 2015industrial Nanotech, Inc. Article About the Evolution of Roof Coatings in Durability+Design Magazine June 9th, 2015nanospace
2015announcements A step towards a type 1 diabetes vaccine by using nanotherapy June 10th, 2015investigation of Optical Properties of Quantum dots in Presence of Magnetic, Electrical Fields June 10th,
2015interviews/Book reviews/Essays/Reports/Podcasts/Journals/White papers A step towards a type 1 diabetes vaccine by using nanotherapy June 10th,
Scientists observe photographic exposure live at the nanoscale: Advanced method opens up new opportunities for investigation of dynamic processes June 9th,
2015automotive/Transportation Researchers analyze the structure of bird feathers to create hues without dye June 8th, 2015environmental Issues to Hamper Growth of Global Nanocomposites Market June 4th,
2015aerospace/Space Ultrafast heat conduction can manipulate nanoscale magnets June 8th, 2015production of Nanocomposites by Using Direct Nano-Welding of Micromaterials in Iran June 4th,
2015haydale Subsidiary Changes Name & Creates New Aerospace Unit June 4th, 2015an inexpensive rival to graphene aerogels:
Using the Center for Nanoscale Materials, a DOE Office of Science user facility at Argonne,
The Center for Nanoscale Materials is a DOE Office of Science user facility.#####About Argonne National Laboratoryargonne National Laboratory seeks solutions to pressing national problems in science and technology.
'630-252-5526copyright Argonne National Laboratoryissuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.
Iran Ranks 15th in World in Producing Science, 7th in Nanotechnology June 13th, 2015iranian Researchers Model, Design Optical Switches June 13th, 2015industrial Nanotech,
Photonic platform could provide'optical signatures'for molecular electronics June 10th, 2015laboratories National Maglab achieves record high field of 27 Tesla in an all-superconducting magnet using Oxford instruments 15 Tesla outsert system June 12th, 2015framework materials yield to pressure June 11th,
Iran Ranks 15th in World in Producing Science, 7th in Nanotechnology June 13th, 2015national Maglab achieves record high field of 27 Tesla in an all-superconducting magnet using Oxford instruments 15 Tesla outsert system June 12th,
Photonic platform could provide'optical signatures'for molecular electronics June 10th, 2015nanospace-Controlled Gold Material Created Using Molecular Technology June 9th, 2015memory Technology Iranian Researchers Model, Design Optical Switches June 13th, 2015leti Workshop on June 26 to Cover
Techconnect is the world's largest accelerator for industry-vetted emerging-technologies ready for commercialization June 11th, 2015synthesis of Special Nanoparticles in Iran to Increase MRI Contrast June 11th, 2015investigation of Optical
Properties of Quantum dots in Presence of Magnetic, Electrical Fields June 10th, 2015materials/Metamaterials Industrial Nanotech, Inc. Announces Launch of Heat shield (TM) EPX4 Thermal Insulation and Chemical Resistant Coating June 12th, 2015aspen Aerogels to Webcast 2015 Annual Meeting of Stockholders June 11th, 2015framework
materials yield to pressure June 11th, 2015industrial Nanotech, Inc. Continues Global Development Focus on Original Equipment Manufacturer (OEM) Applications:
Industrial Nanotech Continues Connecting With Manufacturers Who Seek out Their Patented Thermal Insulation and Protective Coatings June 11th, 2015announcements VP:
Iran Ranks 15th in World in Producing Science, 7th in Nanotechnology June 13th, 2015iranian Researchers Model, Design Optical Switches June 13th, 2015industrial Nanotech,
'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.
2015renishaw's invia confocal Raman microscope system is being used in conservation activities at the Rijksmuseum in Amsterdam, The netherlands June 16th, 2015solar cells in the roof and nanotechnology in the walls June 16th, 2015chip Technology
2015researchers grind nanotubes to get nanoribbons: Rice-led experiments demonstrate solid-state carbon nanotube'templates'June 15th, 2015materials/Metamaterials Designer electronics out of the printer:
Optimized printing process enables custom organic electronics June 16th, 2015pixelligent Closes $3. 4 Million in Funding: Capital Will be used to Support Partner & Customer Product Introductions and Increase Manufacturing Capacity June 16th, 2015solar cells in the roof and nanotechnology in the walls June 16th, 2015global Nanoclays Market Analysis
, Size, Growth, Trends And Segment Forecasts, 2015 To 2022: Grand View Research, Inc June 15th, 2015announcements Micro to Nano the new European source for innovative microscopy supplies opens for business out of Haarlem in The netherlands June 16th,
2015jpk reports the exploration of living cells using nanoscale and single molecule techniques through the application of scanning probe microscopy in the group of Yves Dufrne at the Catholic University of Louvain, Belgium June 16th,
stretchable conductors using nano-accordion structure June 16th, 2015solar cells in the roof and nanotechnology in the walls June 16th, 2015interviews/Book reviews/Essays/Reports/Podcasts/Journals/White papers Designer
Optimized printing process enables custom organic electronics June 16th, 2015solar cells in the roof and nanotechnology in the walls June 16th, 2015industrial Nanotech,
2015researchers analyze the structure of bird feathers to create hues without dye June 8th, 2015environmental Issues to Hamper Growth of Global Nanocomposites Market June 4th, 2015industrial Industrial Nanotech,
June 15th, 2015industrial Nanotech, Inc. Announces Launch of Heat shield (TM) EPX4 Thermal Insulation and Chemical Resistant Coating June 12th, 2015industrial Nanotech,
Inc. Continues Global Development Focus on Original Equipment Manufacturer (OEM) Applications: Industrial Nanotech Continues Connecting With Manufacturers Who Seek out Their Patented Thermal Insulation and Protective Coatings June 11th,
2015battery Technology/Capacitors/Generators/Piezoelectrics/Thermoelectrics/Energy storage Binghamton engineer creates origami battery June 10th, 2015ultrafast heat conduction can manipulate nanoscale magnets June 8th, 2015diffusion and Remote Detection of Hot-Carriers in Graphene June 8th,
2015researchers synthesize magnetic nanoparticles that could offer alternative to Rare earth magnets June 1st, 2015fuel Cells A protective shield for sensitive catalysts:
Hydrogels block harmful oxygen June 15th, 2015nist's'nano-raspberries'could bear fruit in fuel cells June 9th, 2015unlocking nanofibers potential:
Prototype boosts production of versatile fibers fourfold, while cutting energy consumption by 92 percent June 5th, 2015unique microscopic images provide new insights into ionic liquids April 28th, 201 0
"In essence, the surface of every material can act as its own nanomaterial coating that can greatly change its chemistry and behavior,
but typically provides information only about topology at nanoscale resolution. A highly promising new version of scanning electron microscopy, called"high-resolution scanning electron microscopy,
"Perhaps the first target for applying this new HRSEM surface analytic technique will be the study of surface structures on the facets of nanoparticles.
The surface structures of nanoparticle facets are extremely challenging to image in the plan view (seen from above) using electron microscopy,
since scanning probe techniques cannot usually address nanoparticle surfaces at atomic resolution, and surface X-ray diffraction requires large, single crystal surfaces."
'510-486-5375copyright DOE/Lawrence Berkeley National Laboratoryissuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.
2015high-tech nanofibres could help nutrients in food hit the spot June 17th, 2015imaging Deben reports on how the University of Portsmouth use in situ XCT compressive testing to help answer how materials respond to complex loading conditions June 17th,
2015high-tech nanofibres could help nutrients in food hit the spot June 17th, 2015cellulose from wood can be printed in 3-D June 17th,
2015cellulose from wood can be printed in 3-D June 17th, 2015solar cells in the roof and nanotechnology in the walls June 16th, 2015buckle up for fast ionic conduction June 16th,
2015announcements High-tech nanofibres could help nutrients in food hit the spot June 17th, 2015dyesol Joins Solliance as an Industrial Partner June 17th,
Carbon nanoparticles you can make at home Abstract: Researchers have found an easy way to produce carbon nanoparticles that are small enough to evade the body's immune system,
reflect light in the near-infrared range for easy detection, and carry payloads of pharmaceutical drugs to targeted tissues.
Unlike other methods of making carbon nanoparticles-which require expensive equipment and purification processes that can take days-the new approach generates the particles in a few hours
but that is nanoparticles with high luminescence. This is one of the simplest systems that we can think of.
The nanoparticles are coated with polymers that fine-tune their optical properties and their rate of degradation in the body.
The nanoparticles also can be made quite small, less than eight nanometers in diameter (a human hair is 80,000 to 100,
000 nanometers thick.""Our immune system fails to recognize anything under 10 nanometers, "Pan said.""So, these tiny particles are camouflaged kind of,
I would say; they are hiding from the human immune system.""The team tested the therapeutic potential of the nanoparticles by loading them with an anti-melanoma drug
and mixing them in a topical solution that was applied to pig skin. Bhargava's laboratory used vibrational spectroscopic techniques to identify the molecular structure of the nanoparticles and their cargo."
"Raman and infrared spectroscopy are the two tools that one uses to see molecular structure, "Bhargava said."
"We think we coated this particle with a specific polymer and with specific drug-loading
"The team found that the nanoparticles did not release the drug payload at room temperature, but at body temperature began to release the anticancer drug.
'Copyright University of Illinois at Urbana-Champaignissuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.
The paper,"Tunable luminescent carbon nanospheres with well-defined nanoscale chemistry for synchronized imaging and therapy,"is available online:
X-ray laser opens up new avenues of research in material science June 18th, 2015a new way to image surfaces on the nanoscale:
wrapping them in a protective layer of graphene could boost speeds by up to 30 percent June 18th, 2015a new way to image surfaces on the nanoscale:
Techconnect is the world's largest accelerator for industry-vetted emerging-technologies ready for commercialization June 11th, 2015synthesis of Special Nanoparticles in Iran to Increase MRI Contrast June 11th,
wrapping them in a protective layer of graphene could boost speeds by up to 30 percent June 18th, 2015a new way to image surfaces on the nanoscale:
4-D printing to advance chemistry, materials sciences and defense capabilities June 18th, 2015a new way to image surfaces on the nanoscale:
wrapping them in a protective layer of graphene could boost speeds by up to 30 percent June 18th, 2015a new way to image surfaces on the nanoscale:
4-D printing to advance chemistry, materials sciences and defense capabilities June 18th, 2015a new way to image surfaces on the nanoscale:
butterflies create colors from nanostructures in their wings, honey bees can see and respond to ultraviolet signals,
Research was carried also out in part at the Center for Functional Nanomaterials, Brookhaven National Laboratory f
#Sweeping lasers snap together nanoscale geometric grids: New technique creates multilayered, self-assembled grids with fully customizable shapes and compositions Down at the nanoscale,
where objects span just billionths of a meter, the size and shape of a material can often have surprising and powerful electronic and optical effects.
Building larger materials that retain subtle nanoscale features is an ongoing challenge that shapes countless emerging technologies.
"By quickly and independently controlling the nanoscale structure and the composition, we can tailor the performance of these materials.
The scientists synthesized the materials at Brookhaven Lab's Center for Functional Nanomaterials (CFN) and characterized the nanoscale architectures using electron microscopy at CFN
and x-ray scattering at the National Synchrotron Light source--both DOE Office of Science User Facilities.
"Laser-assembled nanowires For the first step in grid construction, the team took advantage of their recent invention of laser zone annealing (LZA) to produce the extremely localized thermal spikes needed to drive ultra-fast self-assembly.
--which pulls and aligns the rapidly forming nanoscale cylinders.""The end result is that in less than one second,
who leads the Electronic nanomaterials group at CFN.""This order persists over macroscopic areas and would be difficult to achieve with any other method."
and transforms them into functional nanowires. Layer-by-layer lattice The first completed nanowire array acts as the foundation of the full lattice.
Additional layers each one following variations on that same process, are stacked then to produce customized, crisscrossing configurations--like chain-link fences 10,000 times thinner than a human hair."
"The direction of the laser sweeping across each unassembled layer determines the orientation of the nanowire rows,
"For example, a single layer of platinum nanowires conducts electricity in only one direction, but a two-layer mesh conducts uniformly in all directions."
This versatility enables the use of a wide variety of materials in different nanoscale configurations."
and thus have a lot of freedom in fabricating multi-component nanostructures, "Yager said.""It's hard to anticipate all the technologies this rapid and versatile technique will allow
Overtext Web Module V3.0 Alpha
Copyright Semantic-Knowledge, 1994-2011