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New photoacoustic technique detects gases at parts-per-quadrillion level

NanoWerk.com - Tue, 06/27/2017 - 19:19
A team of researchers has found a way to detect trace gases down to concentrations at the parts-per-quadrillion level using a new variation on the photoacoustic effect, a technique that measures the sound generated when light interacts with molecules.

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Coating individual bacterial cells with a conducting polymer

NanoWerk.com - Tue, 06/27/2017 - 19:13
Coating of individual bacterial cells with an electron-conducting polymer provides for a high-performance anode for microbial fuel-cell applications.

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Physicists make quantum leap in understanding life's nanoscale machinery

NanoWerk.com - Tue, 06/27/2017 - 18:49
A diagnostic technique that can detect tiny molecules signalling the presence of cancer could be on the horizon.

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Cotton candy capillaries lead to circuit boards that dissolve when cooled

NanoWerk.com - Tue, 06/27/2017 - 18:44
The silver nanowires are held together in the polymer so that they touch, and as long as the polymer doesn't dissolve, the nanowires will form a path to conduct electricity similar to the traces on a circuit board.

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Bacteria-coated nanofiber electrodes digest pollutants

NanoWerk.com - Tue, 06/27/2017 - 18:37
Materials scientists and bioelectrochemical engineers may have created an innovative, cost-competitive electrode material for cleaning pollutants in wastewater.

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Graphene and terahertz waves could lead the way to future communication

NanoWerk.com - Tue, 06/27/2017 - 18:33
By utilizing terahertz waves in electronics, future data traffic can get a big boost forward. So far, the terahertz (THz) frequency has not been optimally applied to data transmission, but by using graphene, researchers have come one step closer to a possible paradigm shift for the electronic industry.

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3-D-printed jars in ball-milling experiments

NanoWerk.com - Tue, 06/27/2017 - 18:28
Recently, in situ observations of mechanochemical reactions have been achieved by X-ray diffraction and Raman spectroscopy. Solid-state reactions can be directly tracked, revealing phase transitions and other material transformations during synthesis in a ball mill jar.

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3D-printing catalytic applications

NanoWerk.com - Tue, 06/27/2017 - 15:57
Three-dimensional (3D) printing, also known as additive manufacturing, is a fabrication method that creates structures from digital models. Unlike conventional fabrication methods, 3D printing processes are bottom-up fabrication methods which are based on the incremental addition of layers of materials. Recently, 3D-printing has also been shown to be advantageous to catalytic applications since a printing approach can achieve better control of the fine structure of the target material. It is expected that 3D printing fabrication will provide new solutions for preparing catalysts with new structures in a more economical and energy-efficient way.

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New 'gold standard' for flexible electronics

NanoWerk.com - Tue, 06/27/2017 - 11:56
Simple, economical process makes large-diameter, high-performance, thin, transparent, and conductive foils for bendable LEDs and more.

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Atomic magnet curve balls

NanoWerk.com - Tue, 06/27/2017 - 11:50
A twisted array of atomic magnets were driven to move in a curved path, a needed level of control for use in future memory devices.

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Targeting neurons with nanoparticles

NanoWerk.com - Tue, 06/27/2017 - 11:42
A research team has elucidated the mechanisms through which nanoparticles modulate bioelectric activity from single neuron to neuronal networks.

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Use of machine learning to design optimal nanostructures to control heat current in materials

NanoWerk.com - Tue, 06/27/2017 - 10:13
Scientists have developed a calculation method for identifying optimal nanostructures to either maximize or minimize the thermal resistance of target materials. This method reduced the amount of calculation by more than 90% compared to conventional methods.

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Nanoparticles as food additives: improving risk assessment

NanoWerk.com - Tue, 06/27/2017 - 10:07
The anticaking agent E551 silicon dioxide, or silica, has been used widely in the food industry over the past 50 years, and was long thought to be quite safe. Now, however, researchers have discovered that these nanoparticles can affect the immune system of the digestive tract.

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Thwarting metastasis by breaking cancer's legs with gold rods

ScienceDaily.com: Nanotechnology News - Tue, 06/27/2017 - 02:10
Your cancer has metastasized. No one wants to ever hear that. Now researchers have found a way to virtually halt cell migration, a key component in metastasis, in vitro, in human cells. In past in vivo studies in mice, treated cancer did not appear to recur. No significant side effects were observed.
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New class of 'soft' semiconductors could transform HD displays

ScienceDaily.com: Nanotechnology News - Tue, 06/27/2017 - 02:10
New research could help usher in a new generation of high-definition displays, optoelectronic devices, photodetectors, and more. They have shown that a class of “soft” semiconductors can be used to emit multiple, bright colors from a single nanowire at resolutions as small as 500 nanometers. The work could challenge quantum dot displays that rely upon traditional semiconductor nanocrystals to emit light.
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Symposium explores possibilities of origami nanomachines

NanoWerk.com - Tue, 06/27/2017 - 00:06
Origami usually brings to mind folded paper cranes, but scientists see in origami the promise of nanoscale machinery.

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Scientists create a cellular guillotine for studying single-cell wound repair

NanoWerk.com - Mon, 06/26/2017 - 23:53
In an effort to understand how single cells heal, mechanical engineers have developed a microscopic guillotine that efficiently cuts cells in two. Learning more about single-cell wound repair could lead to self-healing materials and machines.

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New class of 'soft' semiconductors could transform HD displays

NanoWerk.com - Mon, 06/26/2017 - 23:45
Researchers find tunable halide perovskites could usher in new generation of optoelectronic devices.

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Thwarting metastasis by breaking cancer's legs with gold nanorods

NanoWerk.com - Mon, 06/26/2017 - 23:35
Migration halted in human carcinoma cultures in vitro via local, targeted gold nanorod photothermal therapy with NIR laser.

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Ultra-compact phase modulators based on graphene plasmons

NanoWerk.com - Mon, 06/26/2017 - 23:23
Researchers achieve light phase modulation with a footprint 30 times smaller than the light wavelength.

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