Fri, 09 Dec 2016 07:11:35 ESTThe day of charging cellphones with finger swipes and powering Bluetooth headsets simply by walking is now much closer.
Thu, 08 Dec 2016 14:00:02 ESTResearchers 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.
Thu, 08 Dec 2016 12:10:01 ESTDoes 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?
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.
Thu, 08 Dec 2016 07:18:03 ESTScientists 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.
Thu, 08 Dec 2016 06:42:51 ESTA 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.
Wed, 07 Dec 2016 17:53:04 ESTMachine 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.
Wed, 07 Dec 2016 14:00:07 ESTThe 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.
Wed, 07 Dec 2016 09:29:27 ESTScientists 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.
Tue, 06 Dec 2016 15:49:20 ESTA 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.
Tue, 06 Dec 2016 11:00:01 ESTFlow-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.
Tue, 06 Dec 2016 08:53:43 ESTScientists 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'.
Mon, 05 Dec 2016 16:52:44 ESTUMass 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.
Mon, 05 Dec 2016 09:17:01 ESTFujitsu 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.
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.
Fri, 02 Dec 2016 14:00:02 ESTIn 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".
Thu, 01 Dec 2016 09:38:29 ESTSmart 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.
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.
Wed, 30 Nov 2016 14:49:09 ESTA 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.
Tue, 29 Nov 2016 14:36:37 ESTA 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.
Tue, 29 Nov 2016 12:58:04 ESTAccording 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.
Tue, 29 Nov 2016 09:21:26 ESTMany 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.
Tue, 29 Nov 2016 09:13:18 ESTFor 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.
Tue, 29 Nov 2016 09:00:28 ESTBumpy surfaces with graphene between would help dissipate heat in next-generation microelectronic devices, according to Rice University scientists.
Tue, 29 Nov 2016 09:00:01 ESTGraphene, 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.
Tue, 29 Nov 2016 08:19:10 ESTThe 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).
Tue, 29 Nov 2016 07:40:01 ESTGraphene 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.
Tue, 29 Nov 2016 07:16:45 ESTA 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.
Tue, 29 Nov 2016 06:30:01 ESTScientists at Tokyo Institute of Technology have identified the adlayer structure of the sumanene buckybowl on Au(111) and revealed its unique bowl inversion behavior.
Mon, 28 Nov 2016 17:41:44 ESTA 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.