Subscribe: EurekAlert! - Nanotechnology
Preview: EurekAlert! - Nanotechnology

EurekAlert! - Nanotechnology

The premier online source for science news since 1996. A service of the American Association for the Advancement of Science.

Last Build Date: Wed, 22 Mar 2017 23:58:01 EDT

Copyright: Copyright 2017 American Association for the Advancement of Science (AAAS); All rights reserved.

3-D printing turns nanomachines into life-size workers

Wed, 22 Mar 2017 00:00:00 EDT

(Dartmouth College) Dartmouth researchers unlock the key to transforming microscopic nanorings into smart materials that perform work at human-scale.

Ultrafast measurements explain quantum dot voltage drop

Wed, 22 Mar 2017 00:00:00 EDT

(DOE/Los Alamos National Laboratory) Solar cells and photodetectors could soon be made from new types of materials based on semiconductor quantum dots, thanks to new insights based on ultrafast measurements capturing real-time photoconversion processes.

Rare-earths become water-repellent only as they age

Wed, 22 Mar 2017 00:00:00 EDT

(University of Basel) Surfaces that have been coated with rare earth oxides develop water-repelling properties only after contact with air. Even at room temperature, chemical reactions begin with hydrocarbons in the air. In the journal Scientific Reports, researchers from the University of Basel, the Swiss Nanoscience Institute and the Paul Scherrer Institute report that it is these reactions that are responsible for the hydrophobic effect.

New gel-like coating beefs up the performance of lithium-sulfur batteries

Tue, 21 Mar 2017 00:00:00 EDT

(Yale University) Yale scientists have developed an ultra-thin coating material that has the potential to extend the life and improve the efficiency of lithium-sulfur batteries, one of the most promising areas of energy research today.

Chemists created nanoparticles for safe imaging of tumors

Tue, 21 Mar 2017 00:00:00 EDT

(ITMO University) Chemists from Russia and Switzerland created biosafe luminescent nanoparticles for imaging tumors and blood vessels damaged by heart attack or stroke. The particles are made of hafnium oxide that is allowed for intravenous injection, and doped with ions of rare earth metals. The scientists hope that the development will give an alternative to toxic quantum dots and help imaging deep tissues without harming a human body. The study appeared in Colloids and Surfaces B: Biointerfaces.

Spintronic technology advances with newly designed magnetic tunnel junctions

Tue, 21 Mar 2017 00:00:00 EDT

(American Institute of Physics) Magnetic tunnel junctions (MTJs) have played a central role in spintronic devices, and researchers are working to improve their performance. A prominent achievement that accelerated the technology's practical applications was the realization of giant tunnel magnetoresistance (TMR) ratios by using rock-salt type MgO crystalline barrier. In this week's Applied Physics Letters, researchers have succeeded in applying MgGa2O4 to a tunnel barrier, the core part of an MTJ, as an alternative material to more conventional insulators.

Manipulating magnetic textures

Tue, 21 Mar 2017 00:00:00 EDT

(American Institute of Physics) While the ability to easily control the magnetic properties of small electronic systems is highly desirable for future small electronics and data storage, an effective solution has proven to be extremely elusive. But now, a group of researchers from universities in Chile and Brazil are reporting this week in the Journal of Applied Physics, a simple way to gain control of magnetism that starts by controlling the shape of the systems.

Research spotlights early signs of disease using infrared light: New research

Mon, 20 Mar 2017 00:00:00 EDT

(University of Sydney) University of Sydney researchers have used infrared spectroscopy to spotlight changes in tiny cell fragments called microvesicles to probe their role in a model of the body's immunological response to bacterial infection.

Unexpected, star-spangled find may lead to advanced electronics

Mon, 20 Mar 2017 00:00:00 EDT

(University of Texas at Dallas) In a recent study, University of Texas at Dallas researchers describe a material that, when heated to about 450 degrees Celsius, transforms from an atomically thin, two-dimensional sheet into an array of one-dimensional nanowires, each just a few atoms wide. An image caught in mid-transformation looks like a tiny United States flag, and with false colors added, is arguably the world's smallest image of Old Glory, researchers said.

Molecular motor-powered biocomputers

Mon, 20 Mar 2017 00:00:00 EDT

(Technische Universität Dresden) A five-year, €6.1 million EU-Horizon 2020 project aims to build a new type of powerful computer based on biomolecules. TU Dresden is participating.

Scientists created nanopowders for the synthesis of new aluminum alloys

Mon, 20 Mar 2017 00:00:00 EDT

(Siberian Federal University) The research team of Siberian Federal University together with the scientists of the Krasnoyarsk Scientific Center of the SB RAS has developed a method for the synthesis of aluminum alloys, the use of which will allow the creation of new types of products with improved characteristics based on aluminum.

'Flying saucer' quantum dots hold secret to brighter, better lasers

Mon, 20 Mar 2017 00:00:00 EDT

(University of Toronto Faculty of Applied Science & Engineering) By carefully controlling the size of the quantum dots, the researchers can 'tune' the frequency, or color, of the emitted light to any desired value. The ability to produce a laser of any desired frequency from a single material would give a boost to scientists looking to study diseases at the level of tissues or individual cells by offering new tools to probe biochemical reactions. They could also enable laser display projectors that would be brighter and more energy efficient than current LCD technology.

Flexibility is key in mechanism of biological self-assembly

Fri, 17 Mar 2017 00:00:00 EDT

(Princeton University) A new study has modeled a crucial first step in the self-assembly of cellular structures such as drug receptors and other protein complexes, and found that the flexibility of the structures has a dramatic impact on how fast two such structures join together.

Nano-polycrystalline film leads to stronger magnetism compared to single-crystal films

Fri, 17 Mar 2017 00:00:00 EDT

(Toyohashi University of Technology) Toyohashi University of Technology researchers have found that nanoscale pillar-shaped distribution of iron in strontium titanate changes its magnetic and magnetooptical response drastically in cooperation with researchers at Myongji University, Harbin Institute of Technology, Massachusetts Institute of Technology, Universidad Técnica Federico Santa María, University of California, San Diego, and Trinity College Dublin. Surprisingly, the polycrystalline film on the silicon substrate showed stronger magnetism than a single crystalline film.

UC researchers use gold coating to control luminescence of nanowires

Thu, 16 Mar 2017 00:00:00 EDT

(University of Cincinnati) In electronics, the race for smaller is huge. Physicists at the University of Cincinnati are working to harness the power of nanowires, microscopic wires that have the potential to improve solar cells or revolutionize fiber optics.

PETA science group promotes animal-free science at society of toxicology conference

Thu, 16 Mar 2017 00:00:00 EDT

(People for the Ethical Treatment of Animals) The PETA International Science Consortium Ltd. is presenting two posters on animal-free methods for testing inhalation toxicity at the 56th annual Society of Toxicology (SOT) meeting March 12 to 16, 2017, in Baltimore, Maryland. This meeting is the largest international conference of its kind, drawing approximately 7,000 scientists from more than 50 countries each year.

The Graphene 2017 Conference connects Barcelona with the international graphene-based industry

Thu, 16 Mar 2017 00:00:00 EDT

(ICFO-The Institute of Photonic Sciences) This prestigious Conference to be held at the Barcelona International Convention Centre (March 28-31) aims to bring together academia and industry to integrate new graphene technologies into practical applications.More than 250 speakers will summarize the latest graphene-based achievements, including the Nobel Prize laureates Andre Geim and Albert Fert.ICFO and ICN2 are the local organizers of this event gathering in Barcelona around 1000 graphene experts from around the world.

The repulsion trick: A self-solving puzzle for organic molecules

Thu, 16 Mar 2017 00:00:00 EDT

(Forschungszentrum Juelich) Jülich researchers have succeeded in controlling the growth of organic molecules using a special trick. Due to their opposing forces, molecules that repel each other always keep a certain distance from their neighbors. Therefore, they mix easily with a second, mutually attracting type of molecule that acts as a sort of 'glue.' Tailored surface structures can thus be put together like pieces in a puzzle -- in a seemingly self-solving manner.

UH Physicist launches new journal for materials science

Wed, 15 Mar 2017 00:00:00 EDT

(University of Houston) Zhifeng Ren, a University of Houston physicist and a principal investigator with the Texas Center for Superconductivity at UH, has launched a new academic journal, 'Materials Today Physics,' which will focus on new and emerging materials.

Optical fingerprint can reveal pollutants in the air

Wed, 15 Mar 2017 00:00:00 EDT

(Chalmers University of Technology) More efficient sensors are needed to be able to detect environmental pollution. Researchers at Chalmers University of Technology have proposed a new, sophisticated method of detecting molecules with sensors based on ultra-thin nanomaterials. The novel method could improve environmental sensing in the future. The results are published today in the scientific journal Nature Communications.

Mapping the effects of crystal defects

Wed, 15 Mar 2017 00:00:00 EDT

(Massachusetts Institute of Technology) MIT research offers insights into how crystal dislocations -- a common type of defect in materials -- can affect electrical and heat transport through crystals, at a microscopic, quantum mechanical level. A new mathematical approach to analyzing these dislocations uses a new quasiparticle called a dislon.

Quantum movement of electrons in atomic layers shows potential of materials for electronics and photonics

Wed, 15 Mar 2017 00:00:00 EDT

(University of Kansas) A University of Kansas research team has observed the counterintuitive motion of electrons during experiments in KU's Ultrafast Laser Lab. Because this sort of 'quantum' transport is very efficient, it could play a key role in a new type of manmade material that could be used someday in solar cells and electronics.

Liquid fuel for future computers

Wed, 15 Mar 2017 00:00:00 EDT

(ETH Zurich) In the future, a new type of tiny redox flow battery will supply tightly packed electronic components with energy, while also dissipating the heat they produce.

Four year agreement to supply Silicon Carbide micro-fiber

Wed, 15 Mar 2017 00:00:00 EDT

(Hermes Financial Public Relations) Haydale Graphene Industries plc the UK listed global nanomaterials group, is pleased to announce that its subsidiary, Advanced Composite Materials LLC, has entered into a four-year agreement to supply Silicon Carbide micro-fiber to a global industrial manufacturer of tooling and wear-resistant solutions. This sole supply Agreement has a potential sales value of over US$2.6 million over the initial four year term.

Shaping the future

Tue, 14 Mar 2017 00:00:00 EDT

(Okinawa Institute of Science and Technology (OIST) Graduate University) Iron nanocubes may be key in the future of NO2 sensing.