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Turning hair into water sensors

NanoWerk.com - Wed, 07/15/2020 - 11:29
Researchers synthesised carbon dots from human hair waste which can detect trace amounts of chloroform in water, a major by-product of water disinfection.
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International collaboration unlocks van der Waals heterostructure

NanoWerk.com - Wed, 07/15/2020 - 11:21
Researchers designed and fabricated a heterostructure comprising two layered transition metal dichalcogenides. Such a heterojunction enables multifunctional operation - as a highly-responsive, high-speed photodetector as well as a photovoltaic device with large open-circuit voltage.
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Scientists construct 'DNA droplets' comprising designed DNA nanostructures

NanoWerk.com - Wed, 07/15/2020 - 11:01
The droplets exhibit dynamic functions such as fusion, fission, Janus-shape formation, and protein capture. Their technique is expected to be applicable to a wide variety of biomaterials, opening doors to many promising applications in materials design, drug delivery, and even artificial cell-like molecular systems.
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Researchers develop 'dielectrophoretic tweezer' technology for toxic nanoparticles

NanoWerk.com - Wed, 07/15/2020 - 10:06
Technology developments for 'nanogap electrodes' to purify various ultra-fine floating particles in the air and water. Scalable massive methodology control makes application in the environmental and medical sciences possible.
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New lithium battery charges faster, reduces risk of device explosions

ScienceDaily.com: Nanotechnology News - Wed, 07/15/2020 - 02:21
Cell phone batteries often heat up and, at times, can burst into flames. In most cases, the culprit behind such incidents can be traced back to lithium batteries. Despite providing long-lasting electric currents that can keep devices powered up, lithium batteries can internally short circuit, heating up the device.
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New lithium battery charges faster, reduces risk of device explosions

NanoWerk.com - Wed, 07/15/2020 - 01:50
Researchers have invented a technology that can prevent lithium batteries from heating and failing.
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The new tattoo: Drawing electronics on skin

NanoWerk.com - Wed, 07/15/2020 - 01:43
Engineers discover the possibility of using pencils to draw bioelectronics on human skin.
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A new path for electron optics in solid-state systems

NanoWerk.com - Tue, 07/14/2020 - 21:02
A novel mechanism for electron optics in two-dimensional solid-state systems opens up a route to engineering quantum-optical phenomena in a variety of materials.
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Customizable smart window technology could improve energy efficiency of buildings

NanoWerk.com - Tue, 07/14/2020 - 19:40
A customizable smart window harnesses and manipulates solar power to save energy and cut costs.
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Spray-drying to produce MOFs and COFs in industrial applications

NanoWerk.com - Tue, 07/14/2020 - 19:33
MOFs and COFs are porous materials with a broad range of applications, such as gas storage, CO2 capture or drug delivery. Researchers have demonstrated that spray-drying is a suitable method for producing this kind of materials.
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Tale of the tape: Sticky bits make better batteries

NanoWerk.com - Tue, 07/14/2020 - 19:22
Using techniques similar to those they employed to develop laser-induced graphene, scientists turned adhesive tape into a silicon oxide film that replaces troublesome anodes in lithium metal batteries.
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Particulate plutonium released from the Fukushima Daiichi meltdowns

ScienceDaily.com: Nanotechnology News - Tue, 07/14/2020 - 18:12
Small amounts of plutonium (Pu) were released from the damaged Fukushima Daiichi Nuclear Power Plant (FDNPP) reactors into the environment during the site's 2011 nuclear disaster. However, the physical, chemical, and isotopic form of the released Pu has remained unknown. Now, recent work has shown that Pu was included inside cesium-rich microparticles (CsMPs) that were emitted from the site.
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Nanoelectronics learn the same way as the human brain

NanoWerk.com - Tue, 07/14/2020 - 17:41
For the very first time, scientists have successfully imitated the functioning of brain neurons using semiconductor materials.
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Exchange bias in van der Waals heterostructures

NanoWerk.com - Tue, 07/14/2020 - 17:35
This phenomenon has a number of applications in magnetic sensors and magnetic reading heads, which, however, have not been reported in van der Waals heterostructures before.
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Electrons line dance in a superconductor

NanoWerk.com - Tue, 07/14/2020 - 12:17
Scientists have confirmed a long-standing theoretical prediction for high-temperature superconductors. Different states of matter make superconductivity possible. One of those theorized states of matter is called a pair density wave. The scientists confirmed pair density waves using advanced microscopic imaging techniques.
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Hammer-on technique for atomic vibrations in a crystal

NanoWerk.com - Tue, 07/14/2020 - 12:09
Vibrations of atoms in a crystal of the semiconductor gallium arsenide are impulsively shifted to a higher frequency by an optically excited electric current. The related change in the spatial distribution of charge between gallium and arsenic atoms acts back on their motions via electric interactions.
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Molecularly thin interface between polymers for efficient CO2 capture membrane

NanoWerk.com - Tue, 07/14/2020 - 12:00
Researchers have discovered the highly selective separation of CO2 over nitrogen in composite membranes with ultrathin layers with selectivity governed by the molecularly thin interface formed between polymers.
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Nano-radiomics unveils treatment effect on tumor microenvironment

ScienceDaily.com: Nanotechnology News - Mon, 07/13/2020 - 23:49
Researchers have developed a novel noninvasive approach called nano-radiomics that analyzes imaging data to assess changes in the tumor microenvironment that are not detected with conventional imaging methods.
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Lasers etch an efficient way to address global water crisis

ScienceDaily.com: Nanotechnology News - Mon, 07/13/2020 - 23:49
Researchers use sunlight and a laser-etched metal surface to evaporate and purify water for safe drinking at greater than 100 percent efficiency. The method could help relieve water shortages in drought-stricken areas and be helpful in water desalinization projects.
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A new technique for the production of plasmonics devices

NanoWerk.com - Mon, 07/13/2020 - 20:58
Researchers have improved on the technique of local processing of composites based on nanoporous glass with addition of silver and copper; now, it is possible to predict with high accuracy the optical properties of a plasmonic component.
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