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Nanotechnology News - Nanoscience, Nanotechnolgy, Nanotech News



Phys.org provides the latest news on nanotechnology, nanoscience, nanoelectronics, science and technology. Updated Daily.



 



Flexible device captures energy from human motion

Fri, 09 Dec 2016 07:11:35 EST

The day of charging cellphones with finger swipes and powering Bluetooth headsets simply by walking is now much closer.



State of the art sensors made from graphene and children's toy silly putty

Thu, 08 Dec 2016 14:00:02 EST

Researchers in AMBER, the Science Foundation Ireland-funded materials science research centre, hosted in Trinity College Dublin, have used the wonder material graphene to make the novelty children's material silly putty (polysilicone) conduct electricity, creating extremely sensitive sensors. This world first research, led by Professor Jonathan Coleman from TCD and in collaboration with Prof Robert Young of the University of Manchester, potentially offers exciting possibilities for applications in new, inexpensive devices and diagnostics in medicine and other sectors. The AMBER team's findings have been published this week in the leading journal Science.



Closer look at life-cycle impacts of lithium-ion batteries and proton exchange membrane fuel cells

Thu, 08 Dec 2016 12:10:01 EST

Does it really help to drive an electric car if the electricity you use to charge the batteries come from a coal mine in Germany, or if the batteries were manufactured in China using coal?



Particles self-assemble into Archimedean tilings

Thu, 08 Dec 2016 09:30:01 EST

(Phys.org)—For the first time, researchers have simulated particles that can spontaneously self-assemble into networks that form geometrical arrangements called Archimedean tilings. The key to realizing these structures is a strategy called minimal positive design, in which both the geometry and the chemical selectivity of the particles is taken into account. The process has applications in molecular self-assembly, which could one day be used to build a variety of nanoscale technologies.



Nano-calligraphy on graphene

Thu, 08 Dec 2016 07:18:03 EST

Scientists at The University of Manchester and Karlsruhe Institute of Technology have demonstrated a method to chemically modify small regions of graphene with high precision, leading to extreme miniaturisation of chemical and biological sensors.



Scientists make silver nanowires based on DNA molecules

Thu, 08 Dec 2016 06:42:51 EST

A team of researchers from Russia and Israel, including scientists from MIPT, has made nanowires from DNA molecules and silver nanoparticles. The research findings were published in Advanced Materials and are featured on the cover of the journal.



Machine learning enables predictive modeling of 2-D materials

Wed, 07 Dec 2016 17:53:04 EST

Machine learning, a field focused on training computers to recognize patterns in data and make new predictions, is helping doctors more accurately diagnose diseases and stock analysts forecast the rise and fall of financial markets. And now materials scientists have pioneered another important application for machine learning—helping to accelerate the discovery and development of new materials.



New stamping technique creates functional features at nanoscale dimensions

Wed, 07 Dec 2016 14:00:07 EST

The next time you place your coffee order, imagine slapping onto your to-go cup a sticker that acts as an electronic decal, letting you know the precise temperature of your triple-venti no-foam latte. Someday, the high-tech stamping that produces such a sticker might also bring us food packaging that displays a digital countdown to warn of spoiling produce, or even a window pane that shows the day's forecast, based on measurements of the weather conditions outside.



ANU invention to inspire new night-vision specs

Wed, 07 Dec 2016 09:29:27 EST

Scientists at The Australian National University (ANU) have designed a nano crystal around 500 times smaller than a human hair that turns darkness into visible light and can be used to create light-weight night-vision glasses.



New material could lead to erasable and rewriteable optical chips

Tue, 06 Dec 2016 15:49:20 EST

A military drone flying on a reconnaissance mission is captured behind enemy lines, setting into motion a team of engineers who need to remotely delete sensitive information carried on the drone's chips. Because the chips are optical and not electronic, the engineers can now simply flash a beam of UV light onto the chip to instantly erase all content. Disaster averted.



Researchers' wobulation technique allows 3-D printing of more sophisticated microstructures

Tue, 06 Dec 2016 11:00:01 EST

Flow-lithography is a lithographic method for continuously generating polymer microstructures for various applications such as bioassays, drug-delivery, cell carriers, tissue engineering and authentication. A team of researchers in Korea has demonstrated the use of a wobulation technique to enhance the resolution of flow lithography produced nanostructures.



New method for studying individual defects in transistors

Tue, 06 Dec 2016 08:53:43 EST

Scientists from the University of Twente's MESA+ Research Institute have developed a method for studying individual defects in transistors. All computer chips, which are each made up of huge numbers of transistors, contain millions of minor 'flaws'.



Scientist designs lamp light operative photodynamic molecules for tumor therapy

Mon, 05 Dec 2016 16:52:44 EST

UMass Medical School scientist Gang Han, PhD, and his team have designed a new class of molecules used in photodynamic therapy that are able to direct lamp light deep into tissue to kill cancer tumors.



World's first gas sensor to apply a new principle for graphene use

Mon, 05 Dec 2016 09:17:01 EST

Fujitsu Laboratories today announced the world's first successful development of an exquisitely sensitive gas sensor based on a new principle that takes advantage of graphene, a material in which carbon atoms are arranged in a sheet one atom thick. This development paves the way for compact instruments that can measure specific gas components with speed and sensitivity, for detecting atmospheric pollution or testing for organically derived gases in a person's breath. Fujitsu Laboratories has developed a gas sensor that operates on a new principle, in which the gate part of a silicon transistor is replaced by graphene. This sensor can detect concentrations lower than tens of parts per billion (ppb) of nitrogen dioxide (NO2) and ammonia (NH3); with nitrogen dioxide in particular, sensitivity has improved more than tenfold, to less than 1 ppb. This technology is expected to enable real-time measurements of air quality, which may have taken tens of hours depending upon the gas being measured. It will also simplify detection of gas components in breath, which can be used to quickly discover lifestyle diseases.



Coaxial nanotubes used to improve performance of lithium-sulfur batteries

Mon, 05 Dec 2016 09:11:11 EST

(Phys.org)—A team of researchers at the University of Texas has found that using coaxial nanotubes can improve the performance of lithium-sulfur batteries (Li-S). In their paper published in the journal Nano Letters, the team describes how they used Polypyrrole-MnO2 coaxial nanotubes to overcome obstacles to using Li-S batteries in commercial products.



New aspect of atom mimicry for nanotechnology applications

Fri, 02 Dec 2016 14:00:02 EST

In nanotechnology control is key. Control over the arrangements and distances between nanoparticles can allow tailored interaction strengths so that properties can be harnessed in devices such as plasmonic sensors. Now researchers at Tokyo Institute of Technology use dendrimers that mimic the electron valency of atoms and link them into arrays using molecules that coordinate with the dendrimer as they would form a covalent electron pair in their valence shell - "electron pair mimicry".



How laser annealing technology can lead to production of ultrathin nanomaterials

Thu, 01 Dec 2016 09:38:29 EST

Smart phones have shiny flat AMOLED displays. Behind each single pixel of these displays hide at least two silicon transistors which were mass-manufactured using laser annealing technologies. While the traditional methods to make them uses temperatures above 1,000 °C, the laser technique reaches the same results at low temperatures even on plastic substrates (melting temperature below 300 °C). Interestingly, a similar procedure can be used to generate crystals of graphene. Graphene is a strong and thin nano-material made of carbon, its electric and heat-conductive properties have attracted the attention of scientists worldwide.



Proposed quantum nano-MRI could generate images with angstrom-level resolution

Thu, 01 Dec 2016 09:30:02 EST

(Phys.org)—Similar to the way that a conventional magnetic resonance imaging (MRI) machine uses large magnets to generate 3D images, physicists have developed a proposal for a quantum nano-MRI machine that would use the magnetic properties of a single atomic qubit to generate 3D images with angstrom-level (0.1-nanometer) resolution. The new technique could lead to the development of single-molecule microscopes for imaging biomolecules, with applications in drug discovery and better understanding diseases.



Team combines quantum physics and photosynthesis to make discovery that could lead to highly efficient solar cells

Wed, 30 Nov 2016 14:49:09 EST

A University of California, Riverside assistant professor has combined photosynthesis and physics to make a key discovery that could help make solar cells more efficient. The findings were recently published in the journal Nano Letters.



Researchers load nanocarriers to deliver chemotherapy drugs and imaging molecules to tumors

Tue, 29 Nov 2016 14:36:37 EST

A conundrum of cancer is the tumor's ability to use our bodies as human shields to deflect treatment. Tumors grow among normal tissues and organs, often giving doctors few options but to damage, poison or remove healthy parts of our body in attempts to beat back the cancer with surgery, chemotherapy or radiation.



Nanotechnology a 'green' approach to treating liver cancer

Tue, 29 Nov 2016 12:58:04 EST

According to the American Cancer Society, more than 700,000 new cases of liver cancer are diagnosed worldwide each year. Currently, the only cure for the disease is to surgically remove the cancerous part of the liver or transplant the entire organ. However, an international study led by University of Missouri School of Medicine researchers has proven that a new minimally invasive approach targets and destroys precancerous tumor cells in the livers of mice and in vitro human cells.



Programmable disorder: Random algorithms at the molecular scale

Tue, 29 Nov 2016 09:21:26 EST

Many self-organized systems in nature exploit a sophisticated blend of deterministic and random processes. No two trees are exactly alike because growth is random, but a Redwood can be readily distinguished from a Jacaranda as the two species follow different genetic programs. The value of randomness in biological organisms is not fully understood, but it has been hypothesized that it allows for smaller genome sizes—because not every detail must be encoded. Randomness also provides the variation underlying adaptive evolution.



Engineers create prototype chip just three atoms thick

Tue, 29 Nov 2016 09:13:18 EST

For more than 50 years, silicon chipmakers have devised inventive ways to switch electricity on and off, generating the digital ones and zeroes that encode words, pictures, movies and other forms of data.



Bumpy surfaces, graphene beat the heat in devices

Tue, 29 Nov 2016 09:00:28 EST

Bumpy surfaces with graphene between would help dissipate heat in next-generation microelectronic devices, according to Rice University scientists.



Making flawless graphene coatings

Tue, 29 Nov 2016 09:00:01 EST

Graphene, the ultra-thin wonder material just a single carbon atom in thickness, holds the promise of such impressive applications as wear-resistant, friction-free coatings. But first manufacturers have to be able to produce large sheets of graphene under precisely controlled conditions. Dirk van Baarle studied how graphene grows at atomic scale and what determines the friction with other materials.



Interactions in designer materials unveiled

Tue, 29 Nov 2016 08:19:10 EST

The fascinating properties of graphene—a single layer of carbon atoms—have been widely celebrated. Not only does graphene exhibit remarkable physics, it also shows great promise for new applications, like flexible display screens and solar cells. But scientists aren't easily satisfied. The hunt is on for the next generation materials—layered stacks composed of single sheets of 'flat' materials like boron nitride (BN), graphene (C) or tungsten disulfide (WS2).



Graphene technology enables fully flexible NFC antennas

Tue, 29 Nov 2016 07:40:01 EST

Graphene is currently one of the most extensively studied materials in the world, both on a scientific and industrial level. The world's first two-dimensional material, this single layer of carbon atoms arranged in a hexagonal lattice has a series of unique and outstanding properties. As well as being the thinnest, strongest and lightest known material, graphene is flexible, impermeable and extremely electrically and thermally conductive. All properties well suited for next generation NFC antennas.



Hybrid approach predicts and confirms structure of complex metal nanoparticles

Tue, 29 Nov 2016 07:16:45 EST

A combined theoretical and experimental approach has allowed researchers to predict and verify the full structure of a monolayer-coated molecular metal nanoparticle. The methodology was tested on silver-thiolate nanoparticles, expanding on earlier knowledge about gold nanoparticles, and is expected to be applicable to a broad range of sizes of nanoparticles made of different elements.



Researchers identify buckybowl structure

Tue, 29 Nov 2016 06:30:01 EST

Scientists at Tokyo Institute of Technology have identified the adlayer structure of the sumanene buckybowl on Au(111) and revealed its unique bowl inversion behavior.



Novel silicon etching technique crafts 3-D gradient refractive index micro-optics

Mon, 28 Nov 2016 17:41:44 EST

A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.