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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.



 



Fundamental breakthrough in the future of designing materials

Thu, 27 Jul 2017 14:00:16 EDT

A team of researchers from AMBER centre based in Trinity College Dublin, have made a breakthrough in the area of material design - one that challenges the commonly held view on how the fundamental building blocks of matter come together to form materials.



New method promises easier nanoscale manufacturing

Thu, 27 Jul 2017 14:00:11 EDT

Scientists at the University of Chicago and Argonne National Laboratory have discovered a new way to precisely pattern nanomaterials that could open a new path to the next generation of everyday electronic devices.



Nanoscale magnetic device mimics behavior of neurons and can recognize human audio signals

Thu, 27 Jul 2017 08:45:13 EDT

(Phys.org)—A team of researchers with members from France, Japan and the U.S. has created a nanoscale magnetic device that mimics the behavior of neurons and can be used to recognize human audio signals. In their paper published in the journal Nature, the team describes how they built their device, how it works and how accurate they found its results. Frank Hoppensteadt with the Courant Institute of Mathematical Sciences offers a News & Views piece on the work done by the team and outlines the ideas behind neuromorphic (brain-like) computers and how some of them are being created.



Research shows reusable, carbon nanotube-reinforced filters clean toxic heavy metals from water

Thu, 27 Jul 2017 05:00:02 EDT

Carbon nanotubes immobilized in a tuft of quartz fiber have the power to remove toxic heavy metals from water, according to researchers at Rice University.



Atomic discovery opens door to greener, faster, smaller electronic circuitry

Wed, 26 Jul 2017 13:25:05 EDT

A key step in unlocking the potential for greener, faster, smaller electronic circuitry was taken recently by a group of researchers led by UAlberta physicist Robert Wolkow.



Novel RNA nanodevices in living cells can sense and analyze multiple complex signals

Wed, 26 Jul 2017 13:00:05 EDT

The interdisciplinary nexus of biology and engineering, known as synthetic biology, is growing at a rapid pace, opening new vistas that could scarcely be imagined a short time ago.



A new low-cost battery offers a hefty voltage and sustained energy capacity

Wed, 26 Jul 2017 07:50:02 EDT

A zinc-based battery that delivers a high voltage and substantial energy capacity could be set to rival conventional lithium-ion batteries, A*STAR researchers have found.



Large single-crystal graphene is possible

Wed, 26 Jul 2017 05:31:36 EDT

Thanks to its conductivity, strength and flexibility, graphene is considered as one of the most likely substitutes for silicon and other materials. However, it has not yet resulted in industrial applications. High-quality single-crystal graphene can only be produced in quantities a couple of millimeters to mere centimeters in size. Recently, a team led by Prof. Feng Ding and Prof. Rodney Ruoff with the Institute for Basic Science (IBS), Prof. Kaihui Liu at Peking University, and their collaborators reported the synthesis of a large sheet of monolayer single-crystal graphene. This result allows a leap forward in graphene production to an optimized method of fabricating an almost-perfect (> 99.9 % aligned) 5 × 50 cm2 single-crystal graphene in just 20 minutes. Moreover, the low production costs, comparable to commercially available lower-quality polycrystalline graphene films, could expand its usability. Detailed in Science Bulletin, the method is expected to stimulate further fundamental work on graphene and related materials, including large-scale folding of graphene sheets, similar to paper, creating origami-like or kirigami-like shapes that could be applied to future flexible circuits.



Color-shifting electronic skin could have wearable tech and prosthetic uses

Tue, 25 Jul 2017 19:00:02 EDT

The ability of some animals, including chameleons, octopus, and squid, to change their skin colour for camouflage, temperature control, or communication is well known.



Nanoparticles loaded with component of common spice kill cancer cells

Tue, 25 Jul 2017 10:37:41 EDT

Attaching curcumin, a component of the common spice turmeric, to nanoparticles can be used to target and destroy treatment-resistant neuroblastoma tumor cells, according to a new study published in Nanoscale.



Chemical route to electronic devices in graphene

Tue, 25 Jul 2017 09:42:58 EDT

Essential electronic components, such as diodes and tunnel barriers, can be incorporated in single graphene wires (nanoribbons) with atomic precision. The goal is to create graphene-based electronic devices with extremely fast operational speeds. The discovery was made in a collaboration between Aalto University and their colleagues at Utrecht University and TU Delft in the Netherlands. The work is published in Nature Communications.



Carbon nanotubes stand at attention

Tue, 25 Jul 2017 06:00:11 EDT

Just as members of a marching band align themselves for a performance, carbon nanotubes create a similar configuration.



Multitasking monolayers lay groundwork for devices that can do two things at once

Mon, 24 Jul 2017 16:08:42 EDT

Two-dimensional materials that can multitask.



Writing with the electron beam—now in silver

Mon, 24 Jul 2017 10:18:54 EDT

When it comes to extremely fine, precise features, a scanning electron microscope (SEM) is unrivaled. A focused electron beam can directly deposit complex features onto a substrate in a single step (Electron-Beam-Induced Deposition, EBID). While this is an established technique for gold, platinum, copper and further metals, direct electron beam writing of silver remained elusive. Yet, the noble metal silver promises especially interesting potential applications in nano-optics in information technology. For the first time a team from the HZB and the Swiss Federal Laboratories for Materials Science and Technology (EMPA) has successfully realized the local deposition of silver nanocrystals by EBID.



Quantum computing building blocks

Mon, 24 Jul 2017 09:16:42 EDT

For decades scientists have known that a quantum computer—a device that stores and manipulates information in quantum objects such as atoms or photons—could theoretically perform certain calculations far faster than today's computing schemes. But building the "parts" for a quantum computer is a monumental research task. One promising approach involves using the quantum "spin" property of nitrogen-vacancy (NV) centers in diamonds to store and process data. But properly placing these centers is a major challenge. Recently researchers constructed chains of NV centers in diamond with more precision than any previous effort.



Optical high-bitrate nanoantenna developed for use with optical waveguide

Thu, 20 Jul 2017 09:00:01 EDT

(Phys.org)—A team of researchers from several institutions in Germany and Australia has developed an optical high-bitrate nanoantenna that they used with an optical waveguide. In their paper published on the open access site Science Advances, the team explains how their device works and their plans for improving it to make it more commercial.



Clothes intertwined with nanotech will treat eczema

Thu, 20 Jul 2017 06:55:31 EDT

Tiny capsules embedded in the clothes we wear could soon be used to counteract the rise of sensitive skin conditions.



Here's a tip: Indented cement shows unique properties

Wed, 19 Jul 2017 16:28:03 EDT

Rice University scientists have determined that no matter how large or small a piece of tobermorite is, it will respond to loading forces in precisely the same way. But poking it with a sharp point will change its strength.



Nanoparticles could spur better LEDs, invisibility cloaks

Wed, 19 Jul 2017 12:55:19 EDT

In an advance that could boost the efficiency of LED lighting by 50 percent and even pave the way for invisibility cloaking devices, a team of University of Michigan researchers has developed a new technique that peppers metallic nanoparticles into semiconductors.



Bubble technique used to measure shear forces between graphene sheets

Wed, 19 Jul 2017 08:30:02 EDT

(Phys.org)—A team of researchers from China and the U.S. has devised a relatively simple means for measuring the shear forces that exist between sheets of graphene and other materials. In their paper published in the journal Physical Review Letters, the group describes the technique and the results they found when using it to measure shear forces for several types of 2-D materials.



'Nano-in-micro' stem cell delivery could rescue blood flow after injury

Wed, 19 Jul 2017 08:00:02 EDT

When blood flow is reduced or cut to tissues, cells are deprived of oxygen and nutrients, which can lead to cell death if blood flow isn't efficiently restored. Stem cells are promising treatments, but they do not tend to stay at the site or survive long enough to heal the damage. Today in ACS Central Science, researchers combine micro and nano approaches to improve stem cell therapies and outcomes after ischemia, or inadequate blood supply.



NanoVelcro microchips could someday noninvasively diagnose prenatal conditions

Wed, 19 Jul 2017 08:00:01 EDT

Many pregnant women undergo some form of prenatal testing before their children are born. The information that expectant mothers gain from these tests vary, from the baby's gender to genetic defects. But the tests are often invasive, which can potentially harm the fetus and the mother. Now, one group reports in ACS Nano that they have developed a device that provides sensitive results, but in a less invasive way: a blood test.



Carbon nanotubes turn electrical current into light-matter quasi-particles

Tue, 18 Jul 2017 10:15:31 EDT

Material scientists and physicists from Heidelberg University (Germany) and the University of St Andrews (Scotland) have demonstrated electrical generation of hybrid light-matter particles, so-called exciton-polaritons, by using field-effect transistors with semiconducting carbon nanotubes integrated in optical micro-cavities.



Ultrasensitive DNA quantification by light scattering

Tue, 18 Jul 2017 10:10:49 EDT

Traces of biomolecules such as DNA can be detected with a new "dynamic" technique based on the observation of association and dissociation events of gold nanoparticles. If the desired DNA sequence is present, it can reversibly bind two nanoparticles together. This can be detected in real time through a change in light scattering. As reported in the journal Angewandte Chemie, this method differentiates true signals from noise and can detect deviations of individual bases.



Harnessing light to drive chemical reactions

Tue, 18 Jul 2017 07:05:24 EDT

An exotic interaction between light and metal can be harnessed to make chemical reactions more sustainable, but the physics behind it has been widely debated in the field.



Breathable, wearable electronics on skin for long-term health monitoring

Mon, 17 Jul 2017 12:02:11 EDT

A hypoallergenic electronic sensor can be worn on the skin continuously for a week without discomfort, and is so light and thin that users forget they even have it on, says a Japanese group of scientists. The elastic electrode constructed of breathable nanoscale meshes holds promise for the development of noninvasive e-skin devices that can monitor a person's health continuously over a long period.



Plasmon-powered devices for medicine, security, solar cells

Mon, 17 Jul 2017 08:43:09 EDT

A Rice University professor's method to "upconvert" light could make solar cells more efficient and disease-targeting nanoparticles more effective.



A firefly's flash inspires new nanolaser light

Mon, 17 Jul 2017 08:40:02 EDT

A reinvented, low-cost laser source that stores light energy inside nanoscale disks could underpin the development of optically powered neurocomputers, reveals a simulation study led by KAUST researchers.



Researchers develop new transistor concept

Fri, 14 Jul 2017 14:00:02 EDT

Transistors, as used in billions on every computer chip, are nowadays based on semiconductor-type materials, usually silicon. As the demands for computer chips in laptops, tablets and smartphones continue to rise, new possibilities are being sought out to fabricate them inexpensively, energy-saving and flexibly.



Fluorine grants white graphene new powers: Researchers turn common insulator into a magnetic semiconductor

Fri, 14 Jul 2017 14:00:02 EDT

A little fluorine turns an insulating ceramic known as white graphene into a wide-bandgap semiconductor with magnetic properties. Rice University scientists said that could make the unique material suitable for electronics in extreme environments.