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Pseudoparticles travel through photoactive material: KIT scientists measure important process in the conversion of light energy -- publication in Nature Communications

Nanotech-Now - April 26, 2015 - 7:45am
Researchers of Karlsruhe Institute of Technology (KIT) have unveiled an important step in the conversion of light into storable energy: Together with scientists of the Fritz Haber Institute in Berlin...
Categories: Nanotechnology News

ORNL reports method that takes quantum sensing to new level

Nanotech-Now - April 26, 2015 - 7:45am
Thermal imaging, microscopy and ultra-trace sensing could take a quantum leap with a technique developed by researchers at the Department of Energy's Oak Ridge National Laboratory.
Categories: Nanotechnology News

A silver lining: UCSB researchers cradle silver nanoclusters inside synthetic DNA to create a programmed, tunable fluorescent array

Nanotech-Now - April 26, 2015 - 7:45am
The silver used by Beth Gwinn's research group at UC Santa Barbara has value far beyond its worth as a commodity, even though it's used in very small amounts.
Categories: Nanotechnology News

Electron spin brings order to high entropy alloys

Nanotech-Now - April 26, 2015 - 7:45am
Researchers from North Carolina State University have discovered that electron spin brings a previously unknown degree of order to the high entropy alloy nickel iron chromium cobalt (NiFeCrCo) - and m...
Categories: Nanotechnology News

Nature: Low-reflection wings make butterflies nearly invisible: Irregular nanostructures on the transparent wing of the glasswing butterfly prevent the reflection of light -- publication in Nature Communications -- researchers plan applications

Nanotech-Now - April 26, 2015 - 7:45am
The effect is known from the smart phone: Sun is reflected by the display and hardly anything can be seen. In contrast to this, the glasswing butterfly hardly reflects any light in spite of its transp...
Categories: Nanotechnology News

Scientists Use Nanoscale Building Blocks and DNA 'Glue' to Shape 3D Superlattices: New approach to designing ordered composite materials for possible energy applications

Nanotech-Now - April 26, 2015 - 7:45am
Taking child's play with building blocks to a whole new level-the nanometer scale-scientists at the U.S. Department of Energy's (DOE) Brookhaven National Laboratory have constructed 3D "superlattice"...
Categories: Nanotechnology News

Magnetic RAM makes synaptic-like junction

Nanotechweb - April 24, 2015 - 8:37am
Spin-transfer torque magnetic random-access memory could act as memristive device capable of “learning”, say French researchers.
Categories: Nanotechnology News

Surface matters: Huge reduction of heat conduction observed in flat silicon channels

Nanotech-Now - April 24, 2015 - 7:45am
The ability of materials to conduct heat is a concept that we are all familiar with from everyday life. The modern story of thermal transport dates back to 1822 when the brilliant French physicist Jea...
Categories: Nanotechnology News

Nanoparticles Used to Improve Mechanical, Thermal Properties of Cellulose Fibers

Nanotech-Now - April 24, 2015 - 7:45am
Iranian and Malaysian researchers studied the effects of clay nanoparticles on the process of production of cellulose fibers.
Categories: Nanotechnology News

Nanoparticle drug reverses Parkinson's-like symptoms in rats

Nanotech-Now - April 24, 2015 - 7:45am
As baby boomers age, the number of people diagnosed with Parkinson's disease is expected to increase. Patients who develop this disease usually start experiencing symptoms around age 60 or older. Curr...
Categories: Nanotechnology News

Drexel materials scientists putting a new spin on computing memory

Nanotech-Now - April 24, 2015 - 7:45am
Ever since computers have been small enough to be fixtures on desks and laps, their central processing has functioned something like an atomic Etch A Sketch, with electromagnetic fields pushing data b...
Categories: Nanotechnology News

Quantum 'paparazzi' film photons in the act of pairing up

Nanotech-Now - April 24, 2015 - 7:45am
In the quantum world of light, being distinguishable means staying lonely. Only those photons that are indistinguishable can wind up in a pair, through what is called Hong-Ou-Mandel interference. This...
Categories: Nanotechnology News

Physicists generate electrical currents from noise

Nanotechweb - April 24, 2015 - 7:16am
Quantum dots put voltage fluctuations to work.
Categories: Nanotechnology News

Nanotechnology Enabling the Possibility of Alternative Fuels: Electrolytic Water Splitting ...

National Nanomanufacturing Network - April 23, 2015 - 6:51am
In an effort to transition from petroleum-based fuels, vehicles such as the Hyundai Tucson Fuel Cell are becoming more widespread. However, the inherent safety and cost of compressed hydrogen tanks are still in question. Electrolytic water splitting represents the most environmentally friendly alternative to generate hydrogen gas; however, the kinetics of the oxygen evolution reaction (OER) are slow and require a catalyst. Most catalysts to date have been limited to transition metal oxides or noble metals – both of which are expensive and unsustainable. The report by Lu et al. reports that unexpectedly high OER catalytic activity was achieved by oxidized multi-walled carbon nanotubes (MWCNTs). A variety of precursors may be used to synthesize MWCNTs, which has resulted in lower costs and ready availability of these nanostructures. In this work detailing the development of metal free electrocatalysts, it was discovered that surface-oxidized MWCNTs, post-treated by hydrothermal and electrochemical activation treatments, showed unprecedented OER activity even in the absence of surface metal oxide catalysts. This OER activity was rationalized by the oxygen containing functional groups such as ketonic C-O, which altered the electronic distribution of the surrounding carbon atoms at the MWCNT surfaces, thereby facilitating the adsorption of water oxidation intermediates. These findings open the door to new applications of surface-oxidized MWCNTs for catalyzing a class of important anodic reactions in water splitting and fuel cells. Further improvements of the activity of the surface-oxidized carbon nanomaterials may enable the fine-tuning of the structure and compositions of hybrid carbon materials for specific applications. These findings provide a prime example of sustainable pathways for nanotechnology to solve critical environmental and societal issues. Reference: Lu X, Yim W-L, Suryanto BHR, Zhao C. Electrocatalytic Oxygen Evolution at Surface-Oxidized Multiwall Carbon Nanotubes. J. Am. Chem. Soc. 2015; 137 (8): 2901-2907 doi: 10.1021/ja509879r (http://pubs.acs.org/doi/full/10.1021/ja509879r#showFigures) Image reprinted with permission from American Chemical Society

Controlling nonlinearity in metamaterials

Nanotechweb - April 23, 2015 - 4:02am
(with video) New metasurfaces could be important for making a range of nonlinear devices, including holograms, photonics crystals and circuits.
Categories: Nanotechnology News

Dispersion Stability Test Aids Characterisation of Functionalised Graphene Materials

Nanotech-Now - April 22, 2015 - 7:45am
A new technical poster from Haydale Ltd. describes a cost-effective and repeatable method for characterisation of functionalised carbon nanomaterials.
Categories: Nanotechnology News

New Application Note Describes Nanomechanical Measurements on Diverse Materials Using the Asylum Research NanomechPro Toolkit

Nanotech-Now - April 22, 2015 - 7:45am
Oxford Instruments Asylum Research has released a new application note, “The NanomechProTM Toolkit: Nanomechanical AFM Techniques for Diverse Materials,” written Dr. Donna Hurley, founder of Lark Scie...
Categories: Nanotechnology News

UCLA nanoscientists are first to model atomic structures of three bacterial nanomachines: Cryo electron microscope enables scientists to explore the frontiers of targeted antibiotics

Nanotech-Now - April 22, 2015 - 7:45am
Researchers at UCLA’s California NanoSystems Institute have become the first to produce images of the atomic structures of three specific biological nanomachines, each derived from a different potenti...
Categories: Nanotechnology News

Whiteboards of the future: New electronic paper could make inexpensive electronic displays: A simple structure of bi-colored balls made of tough, inexpensive materials is well suited for large handwriting-enabled e-paper displays

Nanotech-Now - April 22, 2015 - 7:45am
Researchers from the University of Tokyo have revamped an old e-paper concept to make an inexpensive handwriting-enabled e-paper well suited to large displays like whiteboards. They describe the e-pap...
Categories: Nanotechnology News

Rafts on the cell membrane: Researchers from TU Wien (Vienna) shed light on a big secret of cell membranes: The 'lipid rafts', which have been believed to move within the cell membrane, do not really exist

Nanotech-Now - April 22, 2015 - 7:45am
Tiny structures made of lipid molecules and proteins have been believed to wander within the membrane of a cell, much like rafts on the water. This "raft hypothesis" has been widely accepted, but now...
Categories: Nanotechnology News