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November 24, 2017

Nanotechnology – SciPol Weekly, November 18 – November 24

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Government

Nano and Other Emerging Chemical Technologies – Presentations and Report Posted for Conference on Standardization for Nanotechnologies and Nanomaterials

The European Committee for Standardization (CEN) and Technical Committee (TC) Nanotechnologies together with the CEN-European Committee for Electrotechnical Standardization (CENELEC) Management Center and others, organized the conference as part of its coordinating role in the implementation of  “Standardization activities on nanotechnology and nanomaterials.”  Round tables were held on nanosafety; nanoparticle aerosol measurements; quality/relevance of data in nanomaterial databases and registries; identification of nanomaterials; nanomaterial exposure and risk assessment; and the impact of research projects on standardization. 

Science

Cornell Chronicle – Cornell collaboration reports unique property of bilayer graphene

Imagine walking through the Northwest wilderness, camera phone at the ready, hoping to catch at least a faint glimpse of Bigfoot, and instead returning home with an Ansel Adams-quality picture of the mythical beast as he lumbers past you. That’s kind of what a team led by physics professor Paul McEuen has done in research into the optical properties of single-atom-thick layers of graphene. The group reports remarkably clear observations of excitons – electrically neutral quasiparticles – in bilayer graphene.

Nanowerk – New buckypaper motion sensors a major step toward low-cost, high-performance wearable technology

These new buckypaper sensors represent a marked improvement on current industry standards, with most sensors being either too crude or too inflexible to reliably monitor complex structures like the human body. “Current technology is not designed for that,” said Richard Liang, director of the High-Performance Materials Institute and professor at the FAMU-FSU College of Engineering. “For sensor technology, you need it to be flexible, you need it to be affordable and you need it to be scalable. This new technology is versatile and the sensors are affordable to print. It’s a big innovation that presents many possibilities down the road."

Phys.org – Nano-'hashtags' could be the key to generating the highly sought Majorana quasiparticle

UC Santa Barbara scientists are on the cusp of a major advance in topological quantum computing. A method by which "hashtag"- shaped nanowires may be coaxed to generate Majorana quasiparticles. These quasiparticles are exotic states that if realized, can be used to encode information with very little risk of decoherence—one of quantum computing's biggest challenges—and thus, little need for quantum error correction.

Rice News – Math gets real in strong, lightweight structures

The porous structures called schwarzites are designed with computer algorithms, but Rice researchers found they could send data from the programs to printers and make macroscale, polymer models for testing. Their samples strive to use as little material as possible and still provide strength and compressibility. The results reported in Advanced Materials are works of art that may someday lead to nanoscale electronic devices, catalysts, molecular sieves and battery components, and on the macroscale could become high-load-bearing, impact-resistant components for buildings, cars and aircraft.

ScienceDaily – Nanosponges show promise for potentially blinding eye infections

In recent years, the number of eye surgeries for conditions including cataracts and glaucoma has dramatically increased and with it, so has the number of potentially blinding intraocular infections. In a new study, researchers demonstrate using a mouse model that engineered nanosponges can be used to protect eyes from infections caused by Enterococcus faecalisEnterococcus faecaliscontain a toxin called cytolysin, which is found in roughly 50% of isolates that cause post-operative intraocular infections seen in the United States.

Spectrum – Nanoscale Magnetic Circuits Expand Into Three Dimensions

“The difference between a standard and a magnetic system can be visualized in a simple way by comparing people running on a stadium track versus a crowd wave at the grandstand,” explained coauthor Dédalo Sanz-Hernández. “In a traditional system, electrons are physically moving, like people running, and collide with obstacles along their way. In magnetic systems such as these, in analogy to a crowd wave, people do not need to move, but transmit the information by interacting with their neighbours in a very efficient way.”

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