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Preview: PHYSorg.com: Nanotechnology News

Nanotechnology News - Nanoscience, Nanotechnolgy, Nanotech News



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



 



Graphene in zero G promises success in space

Fri, 15 Dec 2017 12:27:35 EST

In a successful collaboration between the Graphene Flagship and the European Space Agency, experiments testing graphene for two different space-related applications have shown extremely promising results. Based on these results, the Flagship are continuing to develop graphene devices for use in space.



3-D nanoscale imaging made possible

Fri, 15 Dec 2017 09:11:12 EST

Imaging at the nanoscale is important to a plethora of modern applications in materials science, physics, biology, medicine and other fields. Limitations of current techniques are, e.g. their resolution, imaging speed or the inability to look behind opaque objects with arbitrary shapes.



Nanoparticles as a possible solution to antibiotic resistance

Fri, 15 Dec 2017 07:14:02 EST

Around one in 3,300 children in Germany is born with mucoviscidosis. A characteristic of this illness is that one channel albumen on the cell surface is disturbed by mutations. Thus, the amount of water of different secretions in the body is reduced, which creates a tough mucus. As a consequence, inner organs malfunction. Moreover, the mucus blocks the airways. Thus, the self-regulatory function of the lung is disturbed, the mucus is colonized by bacteria and chronic infections follow.



Atomic blasting creates new devices to measure nanoparticles

Thu, 14 Dec 2017 15:37:52 EST

Like sandblasting at the nanometer scale, focused beams of ions ablate hard materials to form intricate three-dimensional patterns. The beams can create tiny features in the lateral dimensions—length and width, but to create the next generation of nanometer-scale devices, the energetic ions must precisely control the features in the vertical dimension—depth. Now, researchers at the National Institute of Standards and Technology (NIST) have demonstrated that a standard ion-beam technique can be fine-tuned to make structures with depths controlled to within the diameter of a single silicon atom.



Spaghetti-like, DNA 'noodle origami' the new shape of things to come for nanotechnology

Thu, 14 Dec 2017 14:00:19 EST

For the past few decades, scientists have been inspired by the blueprint of life, DNA, as the shape of things to come for nanotechnology.



Improving cyber security in harsh environments

Wed, 13 Dec 2017 09:32:44 EST

Many people don't worry about the security of their personal information until it's too late. And protecting data is even more important for military personnel, whose lives could be in danger if some types of information were to get into the wrong hands. Now, one group reports in ACS Nano a new way to protect data, especially when it is subjected to extreme environmental conditions.



Accelerating the self-assembly of nanoscale patterns for next-generation materials

Wed, 13 Dec 2017 09:30:03 EST

The ability to quickly generate ultra-small, well-ordered nanopatterns over large areas on material surfaces is critical to the fabrication of next-generation technologies in many industries, from electronics and computing to energy and medicine. For example, patterned media, in which data are stored in periodic arrays of magnetic pillars or bars, could significantly improve the storage density of hard disk drives.



Precision nanomaterials may pave new way to selectively kill cancer cells, study shows

Wed, 13 Dec 2017 08:42:53 EST

Researchers in Sweden have succeeded in taking the next step toward using man-made nanoscale compounds in the fight against cancer. A recent proof-of-concept study showed that dendrimers, which were first introduced in the 1980s, may be used to introduce compounds that essentially trick cancer cells into performing self-destructive tasks.



Engineers create plants that glow

Wed, 13 Dec 2017 07:12:27 EST

Imagine that instead of switching on a lamp when it gets dark, you could read by the light of a glowing plant on your desk.



Nanotexturing creates bacteria-killing spikes on stainless steel surfaces

Wed, 13 Dec 2017 06:50:03 EST

By using an electrochemical etching process on a common stainless steel alloy, researchers have created a nanotextured surface that kills bacteria while not harming mammalian cells. If additional research supports early test results, the process might be used to attack microbial contamination on implantable medical devices and on food processing equipment made with the metal.



Researchers develop silicon chip-based quantum photonic devices

Wed, 13 Dec 2017 05:48:00 EST

An international team of researchers, affiliated with UNIST has presented a core technology for quantum photonic devices used in quantum information processing. They have proposed combining of quantum dots for generating light and silicon photonic technologies for manipulating light on a single device.



Engineers create artificial graphene in a nanofabricated semiconductor structure

Tue, 12 Dec 2017 15:27:35 EST

Researchers at Columbia Engineering, experts at manipulating matter at the nanoscale, have made an important breakthrough in physics and materials science, recently reported in Nature Nanotechnology. Working with colleagues from Princeton and Purdue Universities and Istituto Italiano di Tecnologia, the team has engineered "artificial graphene" by recreating, for the first time, the electronic structure of graphene in a semiconductor device.



Faster, more accurate cancer detection using nanoparticles

Tue, 12 Dec 2017 11:00:04 EST

Using light-emitting nanoparticles, Rutgers University-New Brunswick scientists have invented a highly effective method to detect tiny tumors and track their spread, potentially leading to earlier cancer detection and more precise treatment.



Researchers make solid ground toward better lithium-ion battery interfaces

Tue, 12 Dec 2017 10:27:21 EST

Research at Sandia National Laboratories has identified a major obstacle to advancing solid-state lithium-ion battery performance in small electronics: the flow of lithium ions across battery interfaces.



Scientists engineer nanoscale pillars to act like memory foam, paving the way to new nanoelectromechanical devices

Tue, 12 Dec 2017 09:04:49 EST

A team of scientists from the U.S. Department of Energy's Brookhaven National Laboratory and the University of Connecticut have developed a customizable nanomaterial that combines metallic strength with a foam-like ability to compress and spring back.



Australia needs a nanosafety authority, say experts

Tue, 12 Dec 2017 08:25:31 EST

New nanomaterials that benefit humanity are being synthesised every day. Researchers want to work with regulators to make sure they are safe.



Researchers invent novel RNA nanotech to decorate exosomes for effective cancer therapy

Mon, 11 Dec 2017 16:34:19 EST

A new study shows that attaching antibody-like RNA nanoparticles to microvesicles can deliver effective RNA therapeutics such as small interfering RNA (siRNA) specifically to cancer cells. Researchers used RNA nanotechnology to apply the RNA nanoparticles and control their orientation to produce microscopic, therapy-loaded extracellular vesicles that successfully targeted three types of cancer in animal models.



Researchers find simpler way to deposit magnetic iron oxide onto gold nanorods

Mon, 11 Dec 2017 16:13:38 EST

Researchers from North Carolina State University and MIT have found a simpler way to deposit magnetic iron oxide (magnetite) nanoparticles onto silica-coated gold nanorods, creating multifunctional nanoparticles with useful magnetic and optical properties.



Researchers discover new way to power electrical devices

Mon, 11 Dec 2017 15:46:44 EST

A team of University of Alberta engineers developed a new way to produce electrical power that can charge handheld devices or sensors that monitor anything from pipelines to medical implants.The discovery sets a new world standard in devices called triboelectric nanogenerators by producing a high-density DC current—a vast improvement over low-quality AC currents produced by other research teams.



New method for more effective photothermal tumor therapy with infrared light

Mon, 11 Dec 2017 15:46:06 EST

Nanorods made of bismuth sulfide kill tumor cells with heat when they are irradiated with near-infrared light (NIR). Chinese scientists are now making these weapons more powerful by remodeling the defect state of the nanorod crystal lattice by adding gold nanodots. As reported in the journal Angewandte Chemie, this could be a good basis for more effective photothermal treatment of tumors.



Scientists channel graphene to understand filtration and ion transport into cells

Fri, 08 Dec 2017 15:58:30 EST

Tiny pores at a cell's entryway act as miniature bouncers, letting in some electrically charged atoms—ions—but blocking others. Operating as exquisitely sensitive filters, these "ion channels" play a critical role in biological functions such as muscle contraction and the firing of brain cells. To rapidly transport the right ions through the cell membrane, the tiny channels rely on a complex interplay between the ions and surrounding molecules, particularly water, that have an affinity for the charged atoms. But these molecular processes have traditionally been difficult to model—and therefore to understand—using computers or artificial structures.



Strongly anisotropic spin relaxation observed in graphene

Fri, 08 Dec 2017 07:49:07 EST

Researchers of the ICN2 Physics and Engineering of Nanodevices Group, led by ICREA Prof. Sergio O. Valenzuela, have unambiguously demonstrated the anisotropic nature of spin relaxation in graphene when interfaced with transition metal dichalcogenides (TMDC). The paper, titled "Strongly anisotropic spin relaxation in graphene–transition metal dichalcogenide heterostructures at room temperature," was published this week in Nature Physics with lead author L. Antonio Benítez.



Chemists synthesize narrow ribbons of graphene using only light and heat

Fri, 08 Dec 2017 07:43:48 EST

Silicon—the shiny, brittle metal commonly used to make semiconductors—is an essential ingredient of modern-day electronics. But as electronic devices have become smaller and smaller, creating tiny silicon components that fit inside them has become more challenging and more expensive.



Scientist's accidental exhale leads to improved DNA detector

Thu, 07 Dec 2017 12:26:36 EST

Greg Madejski held his breath as he looked into the microscope, trying to weld two fingernail-sized chips together: a tiny chip containing a nanofilter on top of another chip with a DNA sensor.



Demonstrating high performance 2-D monolayer transistors on paper substrates

Thu, 07 Dec 2017 09:10:14 EST

(Tech Xplore)—A pair of researchers, Saungeun Park and Deji Akinwande, with the University of Texas at Austin, recently demonstrated high-performance 2-D monolayer transistors on paper substrates at this year's International Electron Devices Meeting. At their presentation, they reported creating graphene and molybdenum disulfide transistors on a normal paper substrate and how well they worked—nearly as well as those based on plastic.



Mastering tailored design of aluminum nanomaterials

Thu, 07 Dec 2017 08:30:36 EST

Whether for energy applications or nuclear waste management, industrial processing of aluminum requires understanding its behavior in highly alkaline solutions. Processing slurries and precipitates (typically gibbsite, α-Al(OH)3) from these solutions is aided by controlling the shape of tiny particles that are produced. Researchers at the IDREAM Energy Frontier Research Center, funded by DOE's Office of Science, Basic Energy Sciences, developed a synthesis route. The scientists devised the route based on simple, rational design principles. With it, the team produced highly uniform gibbsite nanoplates with optimal yield.



Research team saves information on a single molecule

Thu, 07 Dec 2017 05:44:11 EST

Over the past few years, the building blocks of storage media have become ever smaller. But further miniaturization of the current technology is hindered by fundamental limits of quantum mechanics. A new approach consists of using so-called spin-crossover molecules as the smallest possible storage unit. Similar to normal hard drives, these special molecules can save information via their magnetic state. To do so, they have to be placed on surfaces without damaging their ability to save the information.



Physicists stretch diamond using an electric field

Thu, 07 Dec 2017 05:25:42 EST

A research team from the Faculty of Physics of Lomonosov Moscow State University stretched acicular diamond crystallites using an electric field. Deformation occurring during the stretching causes changes in the luminescence spectrum. This effect can be used to develop electric field detectors and other quantum optic devices. The work was published in Nano Letters.



A 100-fold leap to GigaDalton DNA nanotech

Wed, 06 Dec 2017 16:11:20 EST

DNA, present in almost every cell, is increasingly being used as a building material to construct tiny, but sophisticated structures such as autonomous 'DNA walkers' that can move along a microparticle surface, fluorescent labels for diagnostic applications, 'DNA boxes' that serve as smart drug-delivery vehicles programmed to open up at disease sites to release their therapeutic content, or programmable factories for nanoparticles of defined sizes and shapes for new optical and electronic applications.



Wheat gets boost from purified nanotubes

Wed, 06 Dec 2017 13:27:03 EST

The introduction of purified carbon nanotubes appears to have a beneficial effect on the early growth of wheatgrass, according to Rice University scientists. But in the presence of contaminants, those same nanotubes could do great harm.