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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: Mon, 11 Dec 2017 03:58:01 EST

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



Scientists channel graphene to understand filtration and ion transport into cells

Fri, 08 Dec 2017 00:00:00 EST

(National Institute of Standards and Technology (NIST)) Researchers at the National Institute of Standards and Technology and their colleagues have demonstrated that nanometer-scale pores etched into layers of graphene can provide a simple model for the complex operation of ion channels.



Many more bacteria have electrically conducting filaments

Fri, 08 Dec 2017 00:00:00 EST

(University of Massachusetts at Amherst) Microbiologists led by Derek Lovley at the University of Massachusetts Amherst, who is internationally known for having discovered electrically conducting microfilaments or 'nanowires' in the bacterium Geobacter, announce in a new paper this month that they have discovered the unexpected structures in many other species, greatly broadening the research field on electrically conducting filaments.



Three kinds of information from a single X-ray measurement

Fri, 08 Dec 2017 00:00:00 EST

(Friedrich-Schiller-Universitaet Jena) The way in which electronic devices operate relies on the interaction between various materials. For this reason, researchers need to know exactly how specific chemical elements inside a computer chip or a transistor diode behave, and what happens when these elements bond. Physicists of University Jena, Germany, have now developed an innovative method that enables them to obtain several different types of information simultaneously from the interior of a nanoscale building block, and this while it is in the active state.



Revolutionizing electronics using Kirigami

Fri, 08 Dec 2017 00:00:00 EST

(Toyohashi University of Technology) A research team in the Department of Electrical and Electronic Information Engineering and the Electronics-Inspired Interdisciplinary Research Institute (EIIRIS) at Toyohashi University of Technology has developed an ultrastretchable bioprobe using a 'Kirigami' designs. The Kirigami-based bioprobe enables one to follow the shape of spherical and large deformable biological samples such as heart and brain tissues. In addition, its low strain-force characteristic reduces the force induced on organs, thereby enabling minimally invasive biological signal recording.



Smartphone case offers blood glucose monitoring on the go

Thu, 07 Dec 2017 00:00:00 EST

(University of California - San Diego) Engineers at the University of California San Diego have developed a smartphone case and app that could make it easier for patients to record and track their blood glucose readings, whether they're at home or on the go.



New power devices could drastically reduce energy waste

Thu, 07 Dec 2017 00:00:00 EST

(Massachusetts Institute of Technology) At the Institute of Electrical and Electronics Engineers' International Electron Devices Meeting this week, researchers from MIT, semiconductor company IQE, Columbia University, IBM, and the Singapore-MIT Alliance for Research and Technology, presented a new design that, in tests, enabled gallium nitride power devices to handle voltages of 1,200 volts.



Scientist's accidental exhale leads to improved DNA detector

Thu, 07 Dec 2017 00:00:00 EST

(University of Rochester) Researchers at the Universities of Rochester and Ottawa have developed a novel nanoscale device for detecting DNA biomarkers. The device, described in Nano Letters, preconfines translocating molecules using an ultrathin nanoporous silicon nitride membrane separated from a single sensing nanopore by a nanoscale cavity. The membrane serves as a pre-filter and improves the DNA sensing capabilities of the nanopore in multiple ways. The article will be featured on the cover the February issue of the high impact journal Nano Letters.



Substantial funding for the development of cutting-edge materials

Wed, 06 Dec 2017 00:00:00 EST

(Graz University of Technology) Paolo Falcaro has secured a European Research Council (ERC) Consolidator Grant for his research into microporous crystals, known as metal-organic frameworks (MOFs), at Graz University of Technology in Austria. The European Research Council will provide around EUR 2 million in funding for research into these high-performance, leading-edge materials.



A 100-fold leap to GigaDalton DNA nanotech

Wed, 06 Dec 2017 00:00:00 EST

(Wyss Institute for Biologically Inspired Engineering at Harvard) As reported in Nature, a Wyss Institute team leapfrogged their 'DNA bricks' technology by two orders of magnitude, enabling next-generation DNA bricks to self-assemble into three-dimensional nanostructures that are 100 times more complex than those created with existing methods. The study provides user-friendly computational tools to design DNA nanostructures with complex cavities (and possibly surfaces) that have the potential to serve as building components in numerous nanotechnological applications in medicine and engineering.



DNA-origami surpasses important thresholds

Wed, 06 Dec 2017 00:00:00 EST

(Technical University of Munich (TUM)) It is the double strands of our genes that make them so strong. Using a technique known as DNA origami, biophysicist Hendrik Dietz has been building nanometer-scale objects for several years at the Technical University of Munich (TUM). Now Dietz and his team have not only broken out of the nanometer realm to build larger objects, but have also cut the production costs a thousand-fold. These innovations open a whole new frontier for the technology.



The world's smallest Mona Lisa

Wed, 06 Dec 2017 00:00:00 EST

(California Institute of Technology) New techniques in DNA self-assembly allow researchers to create the largest to-date customizable patterns with nanometer precision on a budget.



Towards data storage at the single molecule level

Wed, 06 Dec 2017 00:00:00 EST

(Kiel University) Similar to normal hard drives, so-called spin-crossover molecules can save information via their magnetic state. A research team from Kiel University has now managed to place a new class of spin-crossover molecules onto a surface and to improve its storage capacity. The storage density of conventional hard drives could therefore theoretically be increased by more than one hundred fold. The study has been published in journal Nano Letters.



Bioelectronic 'nose' can detect food spoilage by sensing the smell of death

Wed, 06 Dec 2017 00:00:00 EST

(American Chemical Society) Strong odors are an indicator that food has gone bad, but there could soon be a new way to sniff foul smells earlier on. As reported in ACS Nano, researchers have developed a bioelectronic "nose" that can specifically detect a key decay compound at low levels, enabling people to potentially take action before the stink spreads. It can detect rotting food, as well as be used to help find victims of natural disasters or crimes.



Flipping the electron spin

Wed, 06 Dec 2017 00:00:00 EST

(Technical University of Munich (TUM)) When lithium-ion batteries are charged too quickly, metallic lithium gets deposited on the anodes. This reduces battery capacity and lifespan and can even destroy the batteries. Scientists at the Technical University of Munich (TUM) and the Forschungszentrum Jülich have now presented a process that, for the first time ever, allows this so-called lithium plating process to be investigated directly. This puts new strategies for quick-charging strategies close at hand.



Nanomaterials: How to separate linear and ring-shaped molecules

Wed, 06 Dec 2017 00:00:00 EST

(University of Vienna) What is the difference between linear chains and rings composed of the same material? The molecular building blocks are identical, but from a mathematical point of view the structures have distinct topologies, ring and linear chain. This difference is readily recognizable on a macroscopic scale, but represents a tricky task on the microscopic scale. Physicists around Lisa Weiss and Christos Likos of the University of investigated strategies to separate nano- and microparticles of distinct topology.



Hybrid electrolyte enhances supercapacitance in vertical graphene nanosheets

Tue, 05 Dec 2017 00:00:00 EST

(American Institute of Physics) Supercapacitors can store more energy than and are preferable to batteries because they are able to charge faster, mainly due to the vertical graphene nanosheets that are larger and positioned closer together. Using VGNs as the material for supercapacitor electrodes offers advantages that can be enhanced depending on how the material is grown, treated and prepared to work with electrolytes. In this week's Journal of Applied Physics, researchers discuss ways to improve the material's properties.



The quantum waltz of electrons hints at the next generation of chips

Tue, 05 Dec 2017 00:00:00 EST

(Ecole Polytechnique Fédérale de Lausanne) EPFL researchers have successfully measured some of the quantum properties of electrons in two-dimensional semiconductors. This work in the field of spintronics could one day lead to chips that are not only smaller but that also generate less heat.



Copper will replace toxic palladium and expensive platinum in the synthesis of medications

Tue, 05 Dec 2017 00:00:00 EST

(Ural Federal University) Chemists of Ural Federal University with colleagues from India proved the effectiveness of copper nanoparticles as a catalyst on the example of analysis of 48 organic synthesis reactions. One of the advantages of the catalyst is its insolubility in traditional organic solvents. This makes copper nanoparticles a valuable alternative to heavy metal catalysts, for example palladium, which is currently used for the synthesis of many pharmaceuticals and is toxic for cells.



Superior hydrogen catalyst just grows that way

Tue, 05 Dec 2017 00:00:00 EST

(DOE/Sandia National Laboratories) A printing process uses natural forces to grow an inexpensive catalyst to replace platinum to lower the cost of hydrogen-powered cars.



NJIT's Som Mitra wins one of microchemistry's top honors

Mon, 04 Dec 2017 00:00:00 EST

(New Jersey Institute of Technology) Somenath Mitra, a groundbreaking researcher in the fields of environmental monitoring, water treatment and nanotechnology, was tapped for the 2017 Benedetti Pichler Award from the American Microchemical Society.



Clear leads to fully transparent devices

Mon, 04 Dec 2017 00:00:00 EST

(King Abdullah University of Science & Technology (KAUST)) Large-area, two-dimensional semiconductors wired through transparent oxide conductors produce high-performance see-through electronics.



New nanowires are just a few atoms thick

Mon, 04 Dec 2017 00:00:00 EST

(Massachusetts Institute of Technology) Subnanometer-scale channels in 2-D materials could point toward future electronics, solar cells.



Researchers use nanoparticles to target, kill endometrial cancer

Mon, 04 Dec 2017 00:00:00 EST

(University of Iowa) For the first time, researchers combined traditional chemotherapy with a relatively new cancer drug that attacks chemo-resistant tumor cells, loaded both into tiny nanoparticles, and created an extremely selective and lethal cancer treatment. Results of the three-year lab study to be published Dec. 4 in the journal Nature Nanotechnology.



Engineering electron pathways in 2-D-topological insulators

Fri, 01 Dec 2017 00:00:00 EST

(Elhuyar Fundazioa) In a recent article published in Physical Review Letters researchers from CIC nanoGUNE, the Rudolf Peierls Centre for Theoretical Physics of Oxford, together with colleagues from Wuerzburg and Stanford University reported new insight into the electronic conduction and interference on 2-D-topological insulators -- an exotic kind of insulators that conduct only at the edge and that could be key for the development of a new generation of electronic devices.



International partnership yields revolutionary results

Fri, 01 Dec 2017 00:00:00 EST

(University of Massachusetts Lowell) Thanks to the support of the Pernick Fund, faculty and students at UMass Lowell and Shenkar College of Engineering, Design and Art in Israel have joined forces to study and produce new coatings that make surfaces from glass to metal self-cleaning. That research, which is covered by two patents, could revolutionize the aerospace, automotive and building industries, among others.