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Generating Moebius strips of light

NanoWerk.com - Mon, 06/19/2017 - 12:34
Researchers have experimentally produced Möbius strips from the polarization of light, confirming a theoretical prediction that it is possible for light's electromagnetic field to assume this peculiar shape.

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Double vision: New technique can see nanoscale 'tree' and microscale 'forest' simultaneously

NanoWerk.com - Mon, 06/19/2017 - 12:33
A close-up view of an individual tree won't tell you much about what's going on in the forest, or even what's going on in the tree's upper branches. The same goes for studying nanoparticles.

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Theoretical physicists show topological states in multi-orbital HgTe honeycomb lattices

NanoWerk.com - Mon, 06/19/2017 - 12:33
Scientists propose a design for robust topological insulators that combine the properties of the honeycomb lattice and strong spin-orbit coupling.

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Dunkin' Donuts ditches nano titanium dioxide - but is it actually harmful?

NanoWerk.com - Mon, 06/19/2017 - 12:33
In response to pressure from the advocacy group As You Sow, Dunkin' Brands has announced that it will be removing allegedly 'nano' titanium dioxide from Dunkin' Donuts' powdered sugar donuts.

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API and NINT to keynote 2015 Nanotechnology for Renewable Nanomaterials conference

NanoWerk.com - Mon, 06/19/2017 - 12:32
TAPPI announced that Dr. Theodora Retsina, CEO of American Process, Inc. (API) and Dr. Maria Delorio, Executive Director of the National Institute for Nanotechnology (NINT) and Professor of Physics and Assistant Vice President of Research at the University of Alberta, will be keynote speakers at the 2015 International Conference on Nanotechnology for Renewable Nanomaterials, in Atlanta, Georgia, June 22-25.

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Detecting effects of 3D shapes in nanoscale chip features

NanoWerk.com - Mon, 06/19/2017 - 12:31
Researchers have determined that, at the ultra-small scale of the latest chip features, SEM measurements are strongly affected by variations in the gate's three-dimensional shape that can occur in the course of fabrication, including the line width and center position, the angle formed by a raised feature's sidewalls, the curvature radius of the top edge area, and the effect of adjacent structures.

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Implantable neuronal electrode nanocoating good as gold

NanoWerk.com - Mon, 06/19/2017 - 12:31
Researchers have found that covering an implantable neural electrode with nanoporous gold could eliminate the risk of scar tissue forming over the electrode's surface.

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Nano memory cell can mimic the brain's long-term memory

NanoWerk.com - Mon, 06/19/2017 - 12:31
Researchers have built the one of the world's first electronic multi-state memory cell which mirrors the brain's ability to simultaneously process and store multiple strands of information.

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Nanoengineers win grant to make smart clothes for personalized cooling and heating

NanoWerk.com - Mon, 06/19/2017 - 12:30
Imagine a fabric that will keep your body at a comfortable temperature - regardless of how hot or cold it actually is. Wearing this smart fabric could potentially reduce heating and air conditioning bills for buildings and homes.

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Chain mail nano-coat made from synthetic DNA

NanoWerk.com - Mon, 06/19/2017 - 12:30
DNA bundles transform into stable chain-armor-like nanostructures by copper-catalyzed azide-alkyne click chemistry.

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EU project applies nanotechnology to food packaging

NanoWerk.com - Mon, 06/19/2017 - 12:30
The SVARNISH project will develop a varnish with antimicrobial, oxygen and water vapour barrier properties and improved physic - mechanical properties to be used in the food industry.

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U.S. government calls for nanotechnology-inspired Grand Challenges

NanoWerk.com - Mon, 06/19/2017 - 12:29
Today, the Office of Science and Technology Policy issued a Request for Information (RFI) seeking suggestions for Nanotechnology-Inspired Grand Challenges for the Next Decade. A Grand Challenge is an ambitious but achievable goal that requires advances in science and technology to achieve, and that has the potential to capture the public's imagination.

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Swarms of tiny robots are joining forces to break through blocked arteries (w/video)

NanoWerk.com - Mon, 06/19/2017 - 12:28
Swarms of microscopic, magnetic, robotic beads could be scrubbing in next to the world's top vascular surgeons - all taking aim at blocked arteries.

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Switchable cages - Self-assembly of molecular Archimedean polyhedra

NanoWerk.com - Mon, 06/19/2017 - 12:28
Chemists truly went back to the drawing board to develop new X-shaped organic building blocks that can be linked together by metal ions to form an Archimedean cuboctahedron. They report that by changing the concentration or using different counterions, the cuboctahedron can be reversibly split into two octahedra - an interesting new type of fusion-fission switching process.

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A surprisingly simple magnetic flip

NanoWerk.com - Mon, 06/19/2017 - 12:28
A simple technique makes it possible to control the spin directions of 'magnetic twins' hiding inside metallic crystals.

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Scientists use nanoparticles to shut down mechanism that drives cancer growth

NanoWerk.com - Mon, 06/19/2017 - 12:28
In a major step toward developing a novel therapy that targets epithelial-mesenchymal transition, scientists have inhibited the mechanism of the Twist protein using nanoparticles to deliver a nucleic acid called small interfering RNA, or siRNA, into tumor cells.

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A bio-inspired light-sensitive catalyst for producing hydrogen

Nanotechweb.org - Mon, 06/19/2017 - 12:22
Another important step towards making artificial life systems for applications in green energy production.
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California court revokes US EPA approval of nanosilver product

NanoWerk.com - Mon, 06/19/2017 - 11:47
A federal appeals court in California has revoked the Environmental Protection Agency's conditional approval of a nanosilver product used in a wide range of consumer products.

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Using sunlight to the max with MXenes

NanoWerk.com - Mon, 06/19/2017 - 11:19
Researchers have found compounds of transition metals and carbon, known as a MXenes, that can efficiently evaporate water using power supplied by the sun.

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Moisture enhances ammonia sensitivity of carbon nanotubes

NanoWerk.com - Mon, 06/19/2017 - 11:18
In spite of the numerous research efforts regarding the development of miniaturized, low-cost, and highly sensitive sensors based on different organic and semiconducting materials, carbon nanotubes still remain the most promising ones. An international team of researchers has now developed a simple way for fabrication and operation of carbon nanotube-based chemical sensors. The sensor consists of carboxylated single-walled carbon nanotubes, which were spin-coated over the polymer substrate between sputtered metal electrodes.

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