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Nanotechnology News - Nanoscience, Nanotechnolgy, Nanotech News



Phys.org provides the latest news on nanotechnology, nanoscience, nanoelectronics, science and technology. Updated Daily.



 



Petals produce a 'blue halo' that helps bees find flowers

Wed, 18 Oct 2017 13:00:09 EDT

Latest research has found that several common flower species have nanoscale ridges on the surface of their petals that meddle with light when viewed from certain angles.



Nanofiber sutures promote production of infection-thwarting peptide

Wed, 18 Oct 2017 10:41:03 EDT

Loading nanofiber sutures with vitamin D induces the production of an infection-fighting peptide, new research shows.



Art advancing science at the nanoscale

Wed, 18 Oct 2017 08:39:58 EDT

Like many other scientists, Don Ingber, M.D., Ph.D., the Founding Director of the Wyss Institute, is concerned that non-scientists have become skeptical and even fearful of his field at a time when technology can offer solutions to many of the world's greatest problems. "I feel that there's a huge disconnect between science and the public because it's depicted as rote memorization in schools, when by definition, if you can memorize it, it's not science," says Ingber, who is also the Judah Folkman Professor of Vascular Biology at Harvard Medical School and the Vascular Biology Program at Boston Children's Hospital, and Professor of Bioengineering at the Harvard Paulson School of Engineering and Applied Sciences (SEAS). "Science is the pursuit of the unknown. We have a responsibility to reach out to the public and convey that excitement of exploration and discovery, and fortunately, the film industry is already great at doing that."



Chemists develop optical imaging tool to target cancer cells

Tue, 17 Oct 2017 08:41:40 EDT

Dr. Ning Fang of the Chemistry Department at Georgia State University has developed a new optical imaging technique, Single Particle Orientation and Rotational Tracking (SPORT), to image rotational motions in live cells and ultimately target cancer cells.



Chemical treatment improves quantum dot lasers

Mon, 16 Oct 2017 15:41:09 EDT

One of the secrets to making tiny laser devices such as opthalmic surgery scalpels work even more efficiently is the use of tiny semiconductor particles, called quantum dots. In new research at Los Alamos National Laboratory's Nanotech Team, the ~nanometer-sized dots are being doctored, or "doped," with additional electrons, a treatment that nudges the dots ever closer to producing the desired laser light with less stimulation and energy loss.



Vibrating nanoparticles interact: Placing nanodisks in groups can change their vibrational frequencies

Mon, 16 Oct 2017 15:00:06 EDT

Like a tuning fork struck with a mallet, tiny gold nanodisks can be made to vibrate at resonant frequencies when struck by light. In new research, Rice University researchers showed they can selectively alter those vibrational frequencies by gathering different-sized nanodisks into groups.



Researchers advance characterization, purification of nanotube wires and films

Mon, 16 Oct 2017 08:21:35 EDT

To make continuous, strong and conductive carbon nanotube fibers, it's best to start with long nanotubes, according to scientists at Rice University.



Can nanotechnology heal scar tissue?

Mon, 16 Oct 2017 07:31:26 EDT

Think scars last a lifetime? Think again.



Team reconstructs nanoscale virus features from correlations of scattered X-rays

Thu, 12 Oct 2017 14:57:59 EDT

As part of an international research team, Jeff Donatelli, Peter Zwart and Kanupriya Pande of the Center for Advanced Mathematics for Energy Research Applications (CAMERA) at Lawrence Berkeley National Laboratory (Berkeley Lab) contributed key algorithms which helped achieve a goal first proposed more than 40 years ago - using angular correlations of X-ray snapshots from non-crystalline molecules to determine the 3D structure of important biological objects. This technique has the potential to allow scientists to shed light on biological structure and dynamics that were previously impossible to observe with traditional X-ray methods.



Morphologies of porous molybdenum disulfide prepared by researchers show good performance in hydrogenation of phenol

Wed, 11 Oct 2017 09:37:48 EDT

Molybdenum disulfide (MoS2) is a transition metal chalcogenide material widely used in photocatalysis, synthesis catalyst, hydrodesulfurization, hydrodeoxygenation, electronic, optical, mechanical, even in hydrogen evolution reaction (HER). The morphology-controlled preparation of MoS2 is currently highly topical. Many preparation routes have been developed for synthesis of nanometer MoS2 over the last decades, and MoS2 nano-materials with different morphologies, particle sizes, and porous features can be obtained from different raw materials through different pathways. However, the morphology and crystal size of MoS2 was uncontrolled and the properties of the obtained material were variable.



Researchers create atom-thick alloys with unanticipated magnetic properties

Wed, 11 Oct 2017 09:10:58 EDT

Substituting atoms in the process of making two-dimensional alloys not only allows them to be customized for applications but also can make them magnetic, according to Rice University scientists and their collaborators.



Low-cost battery from waste graphite

Wed, 11 Oct 2017 09:04:10 EDT

Lithium ion batteries are flammable and the price of the raw material is rising. Are there alternatives? Yes: Empa and ETH Zürich researchers have discovered promising approaches as to how we might produce batteries out of waste graphite and scrap metal.



Researchers discuss the future impact of today's nanotech research

Wed, 11 Oct 2017 09:03:44 EDT

World-renowned nanoscientists and chemists Chad Mirkin, the Director of the International Institute for Nanotechnology (IIN) at Northwestern University, and Teri Odom, the IIN's Associate Director, sit down to discuss the golden age of miniaturization and how the "science of small things" is fostering major advances.



Gold 'nanoprobes' used to track blood flow in tiny vessels

Tue, 10 Oct 2017 19:10:05 EDT

Scientists have designed gold nanoparticles, no bigger than 100 nanometres, which can be coated and used to track blood flow in the smallest blood vessels in the body.



New study is a step toward creating planes that travel at hypersonic speed

Tue, 10 Oct 2017 15:15:49 EDT

An average flight from Miami to Seattle takes about six hours and 40 minutes, but imagine being able to reduce that time to 50 minutes or less. A recent study by researchers at NASA and Binghamton University, State University of New York, could lead to a drastic decrease in flight times. The study, funded in part by the U.S. Air Force, is one of the first steps toward the creation of planes able to move at hypersonic speeds, five to 10 times the speed of sound.



Researchers image perfectly smooth side-surfaces of 3-D silicon crystals with a scanning tunneling microscope

Tue, 10 Oct 2017 07:50:04 EDT

A research collaboration between Osaka University and the Nara Institute of Science and Technology for the first time used scanning tunneling microscopy (STM) to create images of atomically flat side-surfaces of 3-D silicon crystals. This work helps semiconductor manufacturers continue to innovate while producing smaller, faster, and more energy-efficient computer chips for computers and smartphones.



Prototype shows how tiny photodetectors can double their efficiency

Mon, 09 Oct 2017 11:00:14 EDT

Physicists at the University of California, Riverside have developed a photodetector - a device that senses light - by combining two distinct inorganic materials and producing quantum mechanical processes that could revolutionize the way solar energy is collected.



Nanoparticles that stick wounds together

Mon, 09 Oct 2017 08:40:06 EDT

In spite of medical advances, wound-related complications arising after operations can still be life-threatening. In order to avoid these complications in the future, a new nanoparticle-based tissue glue has been developed by researchers at Empa.



A way to cause graphene to self-fold into 3-D shapes

Mon, 09 Oct 2017 08:40:04 EDT

(Phys.org)—A team of researchers with Johns Hopkins University and MIT has found a way to cause flat sheets of graphene to self-fold into 3-D geometric shapes. In their paper published on the open access site Science Advances, the group explains how they prepared the sheets and then used heat to cause them to fold.



New microcapsules to enhance the efficiency of genome-editing

Fri, 06 Oct 2017 09:33:45 EDT

Researchers from Tomsk Polytechnic University jointly with their colleagues from St. Petersburg, Hamburg and London have found that polymer and hybrid silica-coated microcapsules are more efficient in genome-editing when applying CRISPR-Cas9. In the future, this joint development will significantly simplify and increase the efficiency of genome editing, which can treat previously irremediable inherited diseases such as Alzheimer's, hemophilia and many others.



Researchers observe exotic quantum particle in bilayer graphene

Fri, 06 Oct 2017 09:31:08 EDT

October 5, 2017—A team led by Cory Dean, assistant professor of physics at Columbia University, and James Hone, Wang Fong-Jen Professor of Mechanical Engineering at Columbia Engineering, has definitively observed an intensely studied anomaly in condensed matter physics—the even-denominator fractional quantum Hall (FQH) state—via transport measurement in bilayer graphene. The study is published online today in Science.



New ultralight silver nanowire aerogel is boon for energy and electronics industries

Fri, 06 Oct 2017 07:23:26 EDT

A new ultralight silver nanowire aerogel could be a boost to the energy and electronics industries.



Chemically stabilizing atomically flat materials improves their potential for commercial application

Thu, 05 Oct 2017 08:50:03 EDT

Two-dimensional materials could underpin a novel family of flexible, low-power electronic devices, but their success depends on ensuring the layers are chemically stable. A*STAR researchers now show that one 2-D material, phosphorene, can be stabilized with the right choice of substrate and an electric field.



Nanopatch polio vaccine delivers

Thu, 05 Oct 2017 07:42:53 EDT

Efforts to rid the world of polio have taken another significant step, thanks to research led by University of Queensland bioscience experts and funding from the World Health Organisation (WHO).



New nanomaterial can extract hydrogen fuel from seawater

Wed, 04 Oct 2017 16:22:08 EDT

It's possible to produce hydrogen to power fuel cells by extracting the gas from seawater, but the electricity required to do it makes the process costly. UCF researcher Yang Yang has come up with a new hybrid nanomaterial that harnesses solar energy and uses it to generate hydrogen from seawater more cheaply and efficiently than current materials.



Light-activated nanoparticles can supercharge current antibiotics

Wed, 04 Oct 2017 14:00:08 EDT

Light-activated nanoparticles, also known as quantum dots, can provide a crucial boost in effectiveness for antibiotic treatments used to combat drug-resistant superbugs such as E. coli and Salmonella, new University of Colorado Boulder research shows.



Imaging agents developed to better monitor growth of tumours

Wed, 04 Oct 2017 12:47:17 EDT

UAlberta researchers have created two new imaging agents that could help physicians visualize the formation of tumour-associated blood vessels, keep track of tumour growth and possibly generate new therapies.



Nanoscale islands dot light-driven catalyst

Wed, 04 Oct 2017 12:46:43 EDT

Individual nanoscale nuggets of gold, copper, aluminum, silver and other metals that capture light's energy and put it to work are being employed by Rice University scientists who have discovered a way to build multifunctional nanoscale structures.



Tungsten offers nano-interconnects a path of least resistance

Wed, 04 Oct 2017 11:06:59 EDT

As microchips become ever smaller and therefore faster, the shrinking size of their copper interconnects leads to increased electrical resistivity at the nanoscale. Finding a solution to this impending technical bottleneck is a major problem for the semiconductor industry.



Confined within tiny carbon nanotubes, extremely cold water molecules line up in a highly ordered chain

Tue, 03 Oct 2017 09:20:01 EDT

Single-walled carbon nanotubes act like tiny straws that are so narrow that water confined within cannot freeze into its normal crystal-like structure. In particular, in very thin nanotubes, water molecules align in a single-file manner. At room temperature, each molecule remains orientated in a random direction, creating a disordered chain. For the first time, scientists observed that at a cool 150 K, these molecules go through a quasiphase transition. In this transition, the molecules orient themselves in a highly structured, classically hydrogen-bonded arrangement.