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Ni-Co film has lots of active edges.
Manipulating the phase of MoS2 at contact points provides excellent low-resistance junctions for ultrathin transistors.
Exciting new work by a Florida State University research team has led to a novel molecular system that can take your temperature, emit white light, and convert photon energy directly to mechanical mot...
Surprisingly, capping ligands only offer sparse covering say US researchers.
The result of every possible measurement on a quantum system is coded in its wave function, which until recently could be found only by taking many different measurements of a system and estimating a...
Measure Both Elastic and Viscous Properties with AFM Using Asylum Researchs Exclusive AM-FM Viscoelastic Mapping Mode
Oxford Instruments Asylum Research announces the availability of its powerful new nanomechanical imaging technique, AM-FM Viscoelastic Mapping Mode, for its entire line of Cypher and MFP-3D atomic f...
PetLife Pharmaceuticals, Inc. (PINKSHEETS: EVGI) (PINKSHEETS: EVGID) today reported that CNN News has published a story, dated August 12, titled, "Bee, Scorpion and Snake Venom May Hold Cancer Cure."
Nanodiamonds Are Forever: A UCSB professors research examines 13,000-year-old nanodiamonds from multiple locations across three continents
Most of North America's megafauna mastodons, short-faced bears, giant ground sloths, saber-toothed cats and American camels and horses disappeared close to 13,000 years ago at the end of the Pleis...
Aspen Aerogels, Inc. (NYSE: ASPN) ("Aspen Aerogels") today announced that it will present at the Barclays CEO Energy-Power Conference being held at the Sheraton New York Hotel & Towers, New York, NY....
Nickel-titanium based medical implants are better when coated with tube-like structures.
The benefits of nanotechnology and nanomanufacturing include significantly improved properties of many common materials when fabricated at nanoscale or molecular dimensions. Examples of these properties include quantized electrical characteristics, enhanced adhesion and surface properties, superior thermal, mechanical, and chemical properties, and tunable light absorption and scattering. Scaling these properties for nano-enabled products and systems, could offer potentially revolutionary performance and capabilities for defense, security, and commercial applications while providing significant societal and economic impact. Key challenges and barriers remain to realizing such nano-enabled technologies that are central to emerging nanomanufacturing techniques, including retaining the nanoscale properties in materials at larger scales, and the maturity of assembly techniques for structures between the nanoscale and 100 microns. Recently, the Defense Advanced Research Project Agency (DARPA) has created the Atoms to Product (A2P) program to address and help overcome these challenges. The program seeks to develop enhanced technologies for assembling nanoscale elements coupled with integration and scale-up of these components into materials and systems to product scale in ways that preserve and exploit the distinctive nanoscale properties of the core element. We want to explore new ways of putting incredibly tiny things together, with the goal of developing new miniaturization and assembly methods that would work at scales 100,000 times smaller than current state-of-the-art technology, said John Main (http://www.darpa.mil/Our_Work/DSO/Personnel/Dr__John_Main.aspx), DARPA program manager, quoted from the DARPA website announcement (http://www.darpa.mil/NewsEvents/Releases/2014/08/22.aspx). If successful, A2P could help enable creation of entirely new classes of materials that exhibit nanoscale properties at all scales. It could lead to the ability to miniaturize materials, processes and devices that cant be miniaturized with current technology, as well as build three-dimensional products and systems at much smaller sizes. The A2P program supports the emphasis on key challenges of nanomanufacturing for given applications extending previous investments in fundamental science and materials research. In this case, several emerging nanomanufacturing approaches and platforms are likely to contribute to such a program concept, including nanoimprint lithography, directed self-assembly (DSA), layer-by-layer (LBL) assembly, additive driven assembly, and hybrid processes incorporating solution-based and vacuum-based processing approaches. Further scalability through adaptation to existing manufacturing infrastructure such as roll-to-roll and print, additive manufacturing, or semiconductor batch type processing is likely to accelerate the pathway to commercialization, and further position these emerging nanomanufacturing processes for the eventual Factory of the Future. To familiarize potential participants with the technical objectives of the A2P program, DARPA has scheduled identical Proposers Day webinars. Participants must register through the registration website: DARPA (http://www.darpa.mil/NewsEvents/Releases/2014/08/22.aspx)
Categories: National Nanomanufacturing Network
Two-dimensional hexagonal boron nitride (h-BN) is a material of significant interest due to the strong ionic bonding of boron and nitrogen atoms that provides unique properties, including the thinnest insulating nanomaterial, exhibiting a bandgap of 5.9 eV, with superior chemical, mechanical, and thermal stability. In addition, h-BN provides an ideal substrate for improving the electrical properties of graphene since the surface is atomically smooth and free of dangling bonds, thereby reducing charge scattering effects resulting in an order of magnitude increase in graphene charge mobility over materials grown on silicon or silicon dioxide. Previously, the method to synthesize monolayer n-BN utilized ultra-high vacuum chemical vapor deposition (UHVCVD) using borazine as a precursor on single crystal transition metal substrates, such as nickel, platinum, or silver, but proved difficult to scale. Polycrystalline metal foils (Ni, Co, Cu, and Pt) were additionally used to grow h-BN using regular chemical vapor deposition (CVD), but the thickness and quality of the films critically depended on surface morphology and crystal orientation of the substrate. High quality h-BN has been synthesized on Pt foils using ammonia borane precursor, yet control of film thickness and domain size remains a challenge for scaling, and the specific growth mechanisms are not well understood. Recently, Park et.al., reported results from a systematic study for synthesis of large area single layer h-BN films on polycrystalline Pt foils using low pressure CVD comparing borazine and ammonia borane precursors. The authors goal was to study the effect of the Pt lattice orientation, the total pressure, and the different cooling rate in order to understand h-BN growth mechanisms. Since nitrogen is not soluble in Pt, the authors objective was to confirm the contributions to h-BN growth surface mediated and precipitation processes. The study included analysis of film properties dependence on cooling rate and crystal orientation of the substrate. Their findings demonstrated that film growth was by a surface mediated growth mechanism, facilitated by a catalytic reaction, that produced polycrystalline h-BN monolayers confined by the underlying Pt surface orientation. The thickness of the h-BN films exhibited a dependence on the Pt surface orientation, presumably determined by the available catalytic reaction sites that decompose the borazine precursor, which would exhibit a dependence on crystal orientation. Improved understanding of h-BN growth mechanisms will potentially lead to methods for controlling the growth of high-quality h-BN films. This further provides the basis for materials and substrates for application in quantum tunneling devices, novel heterostructures, and two-dimensional semiconductors such as molybdenum sulfide and graphene.Reference: Park J, Park JC, Yun SJ, Kim H, Luong DH, Kim SM, Choi SH, Yang W, Kong J, Kim KK, Lee YH. Large-Area Monolayer Hexagonal Boron Nitride on Pt Foil. ACS Nano. 2014; 8 (8): 8520-852 doi: 10.1021/nn503140y (http://pubs.acs.org/doi/full/10.1021/nn503140y#showRef) Image reprinted with permission from American Chemical Society.
Categories: National Nanomanufacturing Network
JPK expands availability of instrumentation in the USA appointing new distributors launched a new web site to support the US market - AFM now available to US users
JPK Instruments, a world-leading manufacturer of nanoanalytic instrumentation for research in life sciences and soft matter, announces their expansion into the US market with new distributors and the...
Introducing the multi-tasking nanoparticle: Versatile particles offer a wide variety of diagnostic and therapeutic applications
Kit Lam and colleagues from UC Davis and other institutions have created dynamic nanoparticles (NPs) that could provide an arsenal of applications to diagnose and treat cancer. Built on an easy-to-mak...
Scientists have developed what they believe is the thinnest-possible semiconductor, a new class of nanoscale materials made in sheets only three atoms thick.
A new $AUD30 million research facility at RMIT University in Melbourne, Australia, will drive cutting-edge advances in micro- and nano-technologies.
Creation of a Highly Efficient Technique to Develop Low-Friction Materials Which Are Drawing Attention in Association with Energy Issues
A research group led by Dr. Masahiro Goto, a MANA Scientist at the Nano-Electronic Materials Unit, International Center for Materials Nanoarchitectonics, NIMS, and Dr. Michiko Sasaki, a NIMS Postdocto...
Competition for Graphene: Berkeley Lab Researchers Demonstrate Ultrafast Charge Transfer in New Family of 2D Semiconductors
A new argument has just been added to the growing case for graphene being bumped off its pedestal as the next big thing in the high-tech world by the two-dimensional semiconductors known as MX2 materi...
By combining plasmonics and optical microresonators, researchers at the University of Illinois at Urbana-Champaign have created a new optical amplifier (or laser) design, paving the way for power-on-a...
Iranian researchers produced nanopowder that has application in increasing the efficiency of gas engines and turbines.