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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: Sat, 24 Jun 2017 12:58:01 EDT

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

Research accelerates quest for quicker, longer-lasting electronics

Fri, 23 Jun 2017 00:00:00 EDT

(University of California - Riverside) In the world of electronics, where the quest is always for smaller and faster units with infinite battery life, topological insulators (TI) have tantalizing potential.In a paper published today in 'Science Advances,' Jing Shi, a professor of physics and astronomy at UC Riverside and colleagues MIT and Arizona State University report they have created a TI film just 25 atoms thick that adheres to an insulating magnetic film, creating a 'heterostructure.'

Tiny nanoparticles offer significant potential in detecting/treating disease new review of work on exosomes

Thu, 22 Jun 2017 00:00:00 EDT

(Swansea University) Exosomes - tiny biological nanoparticles which transfer information between cells - offer significant potential in detecting and treating disease, the most comprehensive overview so far of research in the field has concluded. Areas which could benefit include cancer treatment and regenerative medicine.

Holey pattern boosts coherence of nanomechanical membrane vibrations

Thu, 22 Jun 2017 00:00:00 EDT

(Faculty of Science - University of Copenhagen) Researchers at the Niels Bohr Institute have introduced a new type of nanomechanical resonator, in which a pattern of holes localizes vibrations to a small region in a 30 nm thick membrane. The pattern dramatically suppresses coupling to random fluctuations in the environment, boosting the vibrations' coherence. The researchers' quantitative understanding and numerical models provide a versatile blueprint for ultracoherent nanomechanical devices. Among others, this enables a new generation of nanomechanical sensors to probe quantum limits of mechanical measurements, and more sensitive force microscopy.

Quantum thermometer or optical refrigerator?

Thu, 22 Jun 2017 00:00:00 EDT

(National Institute of Standards and Technology (NIST)) In an arranged marriage of optics and mechanics, physicists have created microscopic structural beams that have a variety of powerful uses when light strikes them.

Smooth propagation of spin waves using gold

Thu, 22 Jun 2017 00:00:00 EDT

(Toyohashi University of Technology) Assistant Professor Taichi Goto at Toyohashi University of Technology elucidated the noise generation mechanism of the spin wave (SW), the wave of a magnetic moment transmitted through magnetic oxide, and established a way to suppress it. The large noise generated by SWs traveling through magnetic oxides has presented a significant obstacle to its applications. However, it became clear that noise can be suppressed by installing a thin gold film in the appropriate places.

Switchable DNA mini-machines store information

Thu, 22 Jun 2017 00:00:00 EDT

(Emory Health Sciences) Biomedical engineers have built simple machines out of DNA, consisting of arrays whose units switch reversibly between two different shapes.The arrays' inventors say they could be harnessed to make nanotech sensors or amplifiers. Potentially, they could be combined to form logic gates, the parts of a molecular computer.

Drip by drip

Wed, 21 Jun 2017 00:00:00 EDT

(University of Konstanz) How do crystals grow? The answer given in current textbooks is: Layer by layer atoms or molecules settle on an existing crystal surface. The research team Physical Chemistry at the University of Konstanz has now observed a preliminary stage of this crystal growth in glutamic acid that contradicts this classical principal of growth. Not individual atoms settle on an existing crystal surface, but nano-drips that already contain building blocks for growth.

Extremely colorful, incredibly bright and highly multiplexed

Wed, 21 Jun 2017 00:00:00 EDT

(Wyss Institute for Biologically Inspired Engineering at Harvard) A team from Harvard's Wyss Institute for Biologically Inspired Engineering, the LMU Munich, and the Max Planck Institute of Biochemistry in Germany, has engineered highly versatile metafluorophores by integrating commonly used small fluorescent probes into self-folding DNA structures where their colors and brightness can be digitally programmed. This nanotechnological approach offers a palette of 124 virtual colors for microscopic imaging.

New catalyst paves way for carbon neutral fuel

Wed, 21 Jun 2017 00:00:00 EDT

(University of Adelaide) Australian scientists have paved the way for carbon neutral fuel with the development of a new efficient catalyst that converts carbon dioxide (CO2) from the air into synthetic natural gas in a 'clean' process using solar energy.

Researchers developed nanoparticle based contrast agent for dual modal imaging of cancer

Tue, 20 Jun 2017 00:00:00 EDT

(World Scientific) Dual modal imaging which shares the advantages of two imaging modalities such as magnetic resonance imaging and optical imaging, has the ability to produce images with higher spatial resolution and higher sensitivity. Contrast agents having both magnetic and optical properties identifies the cancer cells efficiently. Europium doped gadolinium oxide nanorods were synthesized and subsequently coated with silica to improve the biocompatibility.

A new adjustable optical microprobe for the analysis and control of deep brain regions

Tue, 20 Jun 2017 00:00:00 EDT

(Istituto Italiano di Tecnologia - IIT) Researchers have developed a new optical microprobe able to control brain electrical activity by projecting light on wide volumes or selected portions of the central nervous system in an very controlled fashion. The study was published on Nature Neuroscience and it represents a first step toward low invasiveness devices for the diagnosis and treatment of neurological and psychiatric disorders and neurodegenerative diseases.

Tiny bubbles provide tremendous propulsion in new microparticles research-Ben-Gurion U.

Tue, 20 Jun 2017 00:00:00 EDT

(American Associates, Ben-Gurion University of the Negev) The new technique could have significant implications in the development of micromotors and optical devices for use in solar cell optics. 'What we ultimately hope to achieve is a highly accurate, passive technology for use in a concentrated solar device that would follow the sun without the need for a mechanical tracking mechanism,' says Dr. Avi Niv, study co-author.

Possible enhanced pesticide absorption from fresh food via nanoemulsions

Mon, 19 Jun 2017 00:00:00 EDT

(University of Massachusetts at Amherst) University of Massachusetts Amherst food scientist David Julian McClements will lead a team that has received a three-year, $444,550 grant from the US Department of Agriculture's National Institute of Food and Agriculture to study the possibility that eating food nanoemulsions found in dressings, dips or sauces might increase the amount of pesticides absorbed from co-ingested fruits and vegetables, thus increasing risk of adverse health effects.

Sugar-coated nanomaterial excels at promoting bone growth

Mon, 19 Jun 2017 00:00:00 EDT

(Northwestern University) There hasn't been a gold standard for how orthopaedic spine surgeons promote new bone growth in patients, but now Northwestern University scientists have designed a bioactive nanomaterial that is so good at stimulating bone regeneration it could become the method surgeons prefer. The researchers studied in vivo the effect of the nanomaterial on the activity of the growth factor BMP-2. They found that 100 times less of the protein was needed for a successful spinal fusion in an animal model.

Alloying materials of different structures offers new tool for controlling properties

Mon, 19 Jun 2017 00:00:00 EDT

(Oregon State University) New research into the largely unstudied area of heterostructural alloys could lead to greater materials control and in turn better semiconductors, advances in nanotechnology for pharmaceuticals and improved metallic glasses for industrial applications.

To connect biology with electronics, be rigid, yet flexible

Mon, 19 Jun 2017 00:00:00 EDT

(University of Washington) Scientists have measured a thin film made of a polymer as it interacted with ions and electrons. They show how there are rigid and non-rigid regions of the film, and that these regions could accommodate electrons or ions -- but not both equally.

New prospects for universal memory -- high speed of RAM and the capacity of flash

Fri, 16 Jun 2017 00:00:00 EDT

(Moscow Institute of Physics and Technology) One of many research teams and companies' major goals is to develop universal memory -- a storage medium that would combine the high speed of RAM with nonvolatility of a flash drive. MIPT's researches turned to atomic layer deposition which enables unprecedented control over film thickness and coating of 3-D structures, which is problematic for most of the currently used nanofilm deposition techniques. To do this, the team worked with a unique experimental cluster form MIPT's Center of Shared Research Fcailities.

Development of low-dimensional nanomaterials could revolutionize future technologies

Thu, 15 Jun 2017 00:00:00 EDT

(DOE/Ames Laboratory) Javier Vela, scientist at the US Department of Energy's Ames Laboratory, believes improvements in computer processors, TV displays and solar cells will come from scientific advancements in the synthesis of low-dimensional nanomaterials.

Hi-res view of protein complex shows how it breaks up protein tangles

Thu, 15 Jun 2017 00:00:00 EDT

(University of Pennsylvania School of Medicine) A new, high-resolution view of the structure of Hsp104 (heat shock protein 104), a natural yeast protein nanomachine with six subunits, may show news ways to dismantle harmful protein clumps in disease.

Electrolytes made from liquefied gas enable batteries to run at ultra-low temperatures

Thu, 15 Jun 2017 00:00:00 EDT

(University of California - San Diego) Engineers at the University of California San Diego have developed new electrolytes that enable lithium batteries to run at temperatures as low as -60 degrees Celsius with excellent performance -- in comparison, today's lithium-ion batteries stop working at -20 degrees Celsius. The new electrolytes also enable electrochemical capacitors to run as cold as -80 degrees Celsius -- their current limit is -40 degrees Celsius.

New light shed on dynamics of type IV pili and twitching motility

Wed, 14 Jun 2017 00:00:00 EDT

(Gakushuin University) New light shed on dynamics of asymmetric type IV pili distribution and twitching motility triggered by directional light in cyanobacteria.

Quantum dot transistor simulates functions of neurons

Wed, 14 Jun 2017 00:00:00 EDT

(Fundação de Amparo à Pesquisa do Estado de São Paulo) Researchers at the Federal University of São Carlos (UFSCar) in São Paulo State, Brazil, Würzburg University in Germany, and the University of South Carolina in the United States developed a transistor that can lead to the development of new kinds of device and computer circuit in which memory units are combined with logical processing units, economizing space, time, and power consumption.

New chemical method could revolutionize graphene

Wed, 14 Jun 2017 00:00:00 EDT

(University of Illinois at Chicago) University of Illinois at Chicago scientists have discovered a new chemical method that enables graphene to be incorporated into a wide range of applications while maintaining its ultra-fast electronics.

Universal stabilization

Wed, 14 Jun 2017 00:00:00 EDT

(ETH Zurich) ETH researchers led by Lucio Isa have developed microparticles with a rough, raspberry-like surface that stabilise emulsions following a new principle.

Beetles spark development of color-changing nanoparticles for commercial use

Wed, 14 Jun 2017 00:00:00 EDT

(American Chemical Society) Inspired by the varying colors that gleam off of beetle shells, scientists have developed color-shifting nanoparticles that can change hue even after being embedded into a material. A report on the new, inexpensive technique, which could lead to the production of easier-to-read sensors and anti-tampering tags, appears in ACS Applied Materials & Interfaces.