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Northwestern scientists develop first liquid nanolaser: Technology could lead to new way of doing 'lab on a chip' medical diagnostics
Northwestern University scientists have developed the first liquid nanoscale laser. And it's tunable in real time, meaning you can quickly and simply produce different colors, a unique and useful feat...
Nanotech-enabled moisturizer speeds healing of diabetic skin wounds: Spherical nucleic acids silence gene that interferes with wound healing
A new high-tech but simple ointment applied to the skin may one day help diabetic patients heal stubborn and painful ulcers on their feet, Northwestern University researchers report.
KAIST researchers published an article on the development of a novel technique to precisely track the 3-D positions of optically trapped particles having complicated geometry in high speed in the Apri...
Pseudoparticles travel through photoactive material: KIT scientists measure important process in the conversion of light energy -- publication in Nature Communications
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...
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.
A silver lining: UCSB researchers cradle silver nanoclusters inside synthetic DNA to create a programmed, tunable fluorescent array
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.
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...
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
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...
Scientists Use Nanoscale Building Blocks and DNA 'Glue' to Shape 3D Superlattices: New approach to designing ordered composite materials for possible energy applications
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"...
Spin-transfer torque magnetic random-access memory could act as memristive device capable of “learning”, say French researchers.
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...
Iranian and Malaysian researchers studied the effects of clay nanoparticles on the process of production of cellulose fibers.
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...
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...
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...
Quantum dots put voltage fluctuations to work.
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
Categories: National Nanomanufacturing Network
(with video) New metasurfaces could be important for making a range of nonlinear devices, including holograms, photonics crystals and circuits.
A new technical poster from Haydale Ltd. describes a cost-effective and repeatable method for characterisation of functionalised carbon nanomaterials.
New Application Note Describes Nanomechanical Measurements on Diverse Materials Using the Asylum Research NanomechPro Toolkit
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...