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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 Mar 2018 17:58:02 EDT

Copyright: Copyright 2018 American Association for the Advancement of Science (AAAS); All rights reserved.

Breakthrough antimalarial drug delivery system using mesoporous silica nanoparticles

Fri, 23 Mar 2018 00:00:00 EDT

(Kumamoto University) Drug delivery systems (DDSs) are important methods of delivering medicine to affected areas. An international collaborative research group based in Kumamoto University, Japan has successfully developed the world's first DDS for antimalarial drugs. The treatment has increased efficiency up to 240 times as much as when antimalarial medicine is taken orally.

Flexible ultrasound patch could make it easier to inspect damage in odd-shaped structures

Fri, 23 Mar 2018 00:00:00 EDT

(University of California - San Diego) Researchers have developed a stretchable, flexible patch that could make it easier to perform ultrasound imaging on odd-shaped structures, such as engine parts, turbines, reactor pipe elbows and railroad tracks -- objects that are difficult to examine using conventional ultrasound equipment. The ultrasound patch is a versatile and more convenient tool to inspect machine and building parts for defects and damage deep below the surface.

For graphite pellets, just add elbow grease

Thu, 22 Mar 2018 00:00:00 EDT

(Rice University) Rice University researchers crush and press functionalized graphene to make strong, light graphite pellets that hold promise for electronic and catalytic applications.

Breakthrough in photonic biosensors could lead to super-accurate diagnostics and detectors

Thu, 22 Mar 2018 00:00:00 EDT

(NYU Tandon School of Engineering) Stephen Arnold and his team at NYU Tandon's MicroParticle PhotoPhysics Laboratory for BioPhotonics are the first to find a way to determine the density of charges on an area of a whisperinig gallery mode micro-bead's surface, as well as the charge of an ensnared nanoparticle or virus, which could allow researchers and manufacturers not just to identify nanoparticles, but to manipulate them.

Golden touch: Next-gen optical disk to solve data storage challenge

Thu, 22 Mar 2018 00:00:00 EDT

(RMIT University) Scientists from Australia and China have drawn on the durable power of gold to demonstrate a new type of high-capacity optical disk that can hold data securely for more than 600 years. The technology could offer a more cost-efficient and sustainable solution to the global data storage problem while enabling the critical pivot from Big Data to Long Data, opening up new realms of scientific discovery.

Design approach developed for important new catalysts for energy conversion and storage

Wed, 21 Mar 2018 00:00:00 EDT

(Northwestern University) Northwestern University researchers have discovered a new approach for creating important new catalysts to aid in clean energy conversion and storage. The method also has the potential to impact the discovery of new optical and data storage materials and catalysts for higher efficiency processing of petroleum products at lower cost. The researchers created a catalyst that is seven times more active than state-of-the-art commercial platinum by combining theory, a new tool for synthesizing nanoparticles and more than one metallic element.

Researchers fabricate robust superhydrophobic films from anisotropic silica particles

Wed, 21 Mar 2018 00:00:00 EDT

(World Scientific) Recent research published in a paper in NANO by a group of researchers from Nanjing Tech University showed an emulsion-based one-pot synthesis of anisotropic silica by adding various silane coupling agents provides an effective strategy to control particle morphology and modification.

Scientists control molecular alignment on a graphene surface

Wed, 21 Mar 2018 00:00:00 EDT

(Institute of Transformative Bio-Molecules (ITbM), Nagoya University) Scientists at Nagoya University have developed a simple way to align molecules in one direction on a flat graphene surface. Efficiently controlling molecular alignment is expected to lead to significant progress in surface chemistry and molecular engineering, as well as materials science.

Mat baits, hooks and destroys pollutants in water

Wed, 21 Mar 2018 00:00:00 EDT

(Rice University) A polymer mat developed at Rice University has the ability to fish biologically harmful contaminants from water through a strategy known as 'bait, hook and destroy.'

Nanomaterials hold promise for producing hydrogen from water

Wed, 21 Mar 2018 00:00:00 EDT

(University of Houston) Hydrogen holds promise as an inexpensive form of clean energy, but finding an efficient and affordable way to produce the fuel from water -- a technique known as water-splitting -- remains a key scientific challenge. A researcher from the University of Houston is working with a colleague in Taiwan to use hollow gold-silver nanoshells to boost the efficiency of photocatalysts, which generate hydrogen from water, powered only by sunlight.

Researchers explore enzymetic activities based on nanocomplex sensors

Wed, 21 Mar 2018 00:00:00 EDT

(World Scientific) A team of researchers from Ludong University compared the susceptibility of different triangle silver nanoprisms (TSNPRs) towards H2O2 and elucidated the influence of capping agents and structural size on the etching process, with the aim of optimizing TSNPRs for H2O2 etching-based biosensors, such as glucose and glucose oxidase. The result of their research was recently published in a paper in Nano.

Make way for the mini flying machines

Wed, 21 Mar 2018 00:00:00 EDT

(American Chemical Society) Tiny floating robots could be useful in all kinds of ways, for example, to probe the human gut for disease or to search the environment for pollutants. In a step toward such devices, researchers describe a new marriage of materials, combining ultrathin 2-D electronics with miniature particles to create microscopic machines. The researchers will present their results today at the 255th National Meeting & Exposition of the American Chemical Society.

RIT researchers improve fabrication process of nano-structures for electronic devices

Tue, 20 Mar 2018 00:00:00 EDT

(Rochester Institute of Technology) Researchers at RIT have found a more efficient fabricating process to produce semiconductors used in today's electronic devices. They also confirmed that materials other than silicon can be used successfully in the development process that could increase performance of electronic devices.

Low-tech, affordable solutions to improve water quality

Tue, 20 Mar 2018 00:00:00 EDT

(Michigan Technological University) Clever, fundamental engineering could go a long way toward preventing waterborne illness and exposure to carcinogenic substances in water.

Researchers create microlaser that flies along hollow optical fiber

Tue, 20 Mar 2018 00:00:00 EDT

(The Optical Society) For the first time, researchers have optically trapped and propelled a particle-based laser for centimeters inside an optical fiber.

Physicists made crystal lattice from polaritons

Tue, 20 Mar 2018 00:00:00 EDT

(ITMO University) An international research team produced an analog of a solid-body crystal lattice from hybrid photon-electron quasiparticles -- polaritons. In the resulting polariton lattice, certain particles' energy does not depend on their speed. At the same time, the lattice's geometry, particle concentration and polarization properties can still be modified. This opens up new perspectives for study of quantum effects and the use of optical computing. Results of the study were published in Physical Review Letters.

Programming DNA to deliver cancer drugs

Mon, 19 Mar 2018 00:00:00 EDT

(University of Delaware) A research team at the University of Delaware has developed technology to program strands of DNA into switches that turn proteins on and off. This technology could lead to the development of new cancer therapies and other drugs.

Scientists have a new way to gauge the growth of nanowires

Mon, 19 Mar 2018 00:00:00 EDT

(DOE/Argonne National Laboratory) In a new study, researchers from the US Department of Energy's Argonne and Brookhaven National Laboratories observed the formation of two kinds of defects in individual nanowires, which are smaller in diameter than a human hair.

A new kind of quantum bits in two dimensions

Mon, 19 Mar 2018 00:00:00 EDT

(Vienna University of Technology) Two novel materials, each composed of a single atomic layer and the tip of a scanning tunneling microscope - these are the ingredients to create a novel kind of a so-called 'quantum dot'. These extremely small nanostructures allow delicate control of individual electrons by fine-tuning their energy levels directly. Such devices are key for modern quantum technologies.

Scientists invented method of catching bacteria with 'photonic hook'

Mon, 19 Mar 2018 00:00:00 EDT

(ITMO University) An international research team discovered a new type of curved light beams, dubbed a "photonic hook". Photonic hooks are unique, as their radius of curvature is two times smaller than their wavelength. This is the smallest curvature radius of electromagnetic waves ever recorded. Photonic hook can improve the resolution of optical systems and control the movement of nanoparticles, individual cells, viruses or bacteria. Results of this research were published in Optics Letters and Scientific Reports.

Tiny implants for cells are functional in vivo

Mon, 19 Mar 2018 00:00:00 EDT

(University of Basel) For the first time, an interdisciplinary team from the University of Basel has succeeded in integrating artificial organelles into the cells of living zebrafish embryos. This innovative approach using artificial organelles as cellular implants offers new potential in treating a range of diseases, as the authors report in an article published in Nature Communications.

Drawing inspiration from plants and animals to restore tissue

Mon, 19 Mar 2018 00:00:00 EDT

(Harvard John A. Paulson School of Engineering and Applied Sciences) Researchers from the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) and the Wyss Institute for Biologically Inspired Engineering have developed new wound dressings that dramatically accelerate healing and improve tissue regeneration. The two different types of nanofiber dressings, described in separate papers, use naturally-occurring proteins in plants and animals to promote healing and regrow tissue.

Liquid-to-glass transition process gains clarity

Mon, 19 Mar 2018 00:00:00 EDT

(University of Wisconsin-Madison) Paul Voyles, the Beckwith-Bascom Professor in materials science and engineering at the University of Wisconsin-Madison, and collaborators in Madison and at Yale University have made significant experimental strides in understanding how, when and where the constantly moving atoms in molten metal 'lock' into place as the material transitions from liquid to solid glass.

Measuring neutrophil motility could lead to accurate sepsis diagnosis

Mon, 19 Mar 2018 00:00:00 EDT

(Massachusetts General Hospital) Microfluidic device developed by Massachusetts General Hospital investigators may help solve a significant and persistent challenge in medicine -- diagnosing the life-threatening complication of sepsis.

Unexpected effect could lead to lower-power memory, computing devices

Fri, 16 Mar 2018 00:00:00 EDT

(National Institute of Standards and Technology (NIST)) An expected effect, known as zero field switching, could enable lower-power memory and computing devices than presently possible.