Sentences with phrase «nanoparticles at»

These patterns can also be exploited to greatly improve a material's function, which is why scientists are eager to determine the 3 - D structure of nanoparticles at the smallest scale possible.

... researchers working with magnetic nanoparticles at the University of California, Los Angeles (UCLA), and the US Department of Energy's (DOE's) Lawrence Berkeley National Laboratory (Berkeley Lab) approached computational scientists at DOE's Oak Ridge National Laboratory (ORNL) to help solve a unique problem: to model magnetism at the atomic level using experimental data from a real nanoparticle.

Therefore, the enhancement of the magnetic anisotropy of Fe3O4 nanoparticles in order to produce blocked magnetic single domain nanoparticles at room temperature is highly challenging.

In May, they imaged gold nanoparticles at a resolution of just 97 nanometres, to show that scattering lenses can image below the 200 - nanometre limit of conventional optical lenses (Physical Review Letters, DOI: 10.1103 / PhysRevLett.106.193905).

OSU scientists have solved that problem by using a microreactor to create silver nanoparticles at room temperatures without any protective coating, and then immediately printing them onto almost any substrate with a continuous flow process.

«We were able to look at thousands of electrode nanoparticles at a time and get snapshots of them at different stages during charging and discharging,» said Stanford graduate student Yiyang Li, lead author of the report.

«We found that zinc oxide (ZnO) nanoparticles at doses that are relevant to what you might normally eat in a meal or a day can change the way that your intestine absorbs nutrients or your intestinal cell gene and protein expression,» said Gretchen Mahler, associate professor of bioengineering.

One of the key issues in nanoplasmonics is the interaction between metallic nanoparticles at the nanoscale.

Gracias and his teammates also devised a way to load bacteria with nanoparticles at tiny docking stations and release them on demand.

We can now take a snapshot that shows the positions of all the atoms in a nanoparticle at a specific point in its growth.

Not exact matches

Researchers at Israel's Technion Institute of Technology are experimenting with a nanoparticle «barcode» system in order to trace the efficacy of cancer drugs.

However, a study recently published in Nature Communications by chemical engineers at the University of Pittsburgh's Swanson School of Engineering explains how metal nanoparticles form.

A nanoparticle (or nanopowder or nanocluster or nanocrystal) is a microscopic particle with at least one dimension less than 100 nm.

By including chemotherapy molecules in the nanoparticle structures when they are assembled, the molecules could be drawn into tumors — and then released with the application of a light at a shorter wavelength that triggers disassembly through photo - cleavage.

An illustration shows cross sections of two largely spherical nanoparticles before and after they collided at 31 meters per second in a computer simulation.

These materials are sensitive to light, and cause the nanoparticles to self - assemble through a photo - dimerization process — crosslinking — when subjected to light at a wavelength of 365 nanometers.

To find a way to deliver siRNAs for curbing FL2, Dr. Sharp collaborated with Joel Friedman, M.D., Ph.D., professor of physiology & biophysics and of medicine at Einstein, and study co-leader Adam Friedman, M.D., director of dermatologic research at Einstein and Montefiore, who together had developed nanoparticles that protect molecules such as siRNA from being degraded as they ferry the molecules to their intended targets.

Using supercomputers, scientists led by the University at Buffalo modeled what happens when two nanoparticles collide in a vacuum.

«We envision that our nanoparticle therapy could be used to speed the healing of all sorts of wounds, including everyday cuts and burns, surgical incisions, and chronic skin ulcers, which are a particular problem in the elderly and people with diabetes,» said study co-leader David J. Sharp, Ph.D., professor of physiology & biophysics at Einstein.

Under light, the assemblies of photo - sensitive nanoparticles separate over a period of hours at a rate that can be controlled by the intensity and wavelength of the light.

For example, the nanoparticle catalyst converted 99 % of dimethylphenylsilane to the corresponding silanol in just 9 min at room temperature, releasing an equimolar amount of hydrogen gas at the same time.

Manipulated to 1/100, 000 the width of a human hair, nanoparticles can act differently when operating at the quantum level.

«We use biological nanoparticles — a plant virus — to deliver a pesticide,» said Paul Chariou, a PhD student in biomedical engineering at Case Western Reserve and author of a study on the process published in the journal ACS Nano.

«Over the past ten years, the central goal of my research has been focused on finding and introducing overlooked factors at the nanobio interfaces to minimize this bench - to - clinic gap, which might pave a way to accelerate successful clinical translation of nanoparticles.

Scientists at the Center for Soft and Living Matter, within the Institute for Basic Science (IBS, South Korea), made a surfactant based on nanoparticle dimers, which is responsive to multiple stimuli.

Another study to be presented at the conference on Thursday shows beneficial soil bacteria can not tolerate silver, copper oxide and zinc oxide nanoparticles, also used in sunscreens and other products.

So Daniel Anderson at the Massachusetts Institute of Technology exposed human bone marrow stem cells to biodegradable nanoparticles carrying the human gene for vascular endothelial growth factor (VEGF), which attracts blood vessels to injury sites.

On the other hand, the fibre filter was more efficient than the electric one at removing the very smallest nanoparticles.

Dr. Refuerzo and Monica Longo, M.D., Ph.D. (UT Health), in collaboration with colleagues from Houston Methodist Research Institute, Biana Godin, PharmD, Ph.D., bioengineered an innovative microscopic nanoparticle of indomethacin aimed at reaching the pregnant uterus but not crossing the placenta to the fetus.

Researchers at Penn State have combined the two approaches by taking biodegradable polymer nanoparticles encapsulated with cancer - fighting drugs and incorporating them into immune cells to create a smart, targeted system to attack cancers of specific types.

«We're looking at bacteria that make magnetic nanoparticles, so we can insert their genes into brain cells in the same way,» Pralle says.

Scientists at the University of Florida Particle Engineering Research Center and personal products manufacturer Kimberly - Clark recently found an answer by coating silica nanoparticles with copper ions, a potent odor - fighting combination that could be used in powders and spritzes, mixed with cat litter, or embedded in products like garbage bags.

Nanoparticles likely enter the environment through wastewater, where they accumulate in biosolids (sewage sludge) at wastewater treatment plants.

Qing Li, a former postdoctoral fellow in Sun's lab and now a professor at Huazhong University of Science and Technology in China, thought a catalyst that combines copper nanoparticles with graphene might be effective.

«Chemical composition of the nanoparticle is as, if not more, important at inducing toxicity,» the authors said in their report.

Back at the lab, the scientists turned the ginger into what they are calling GDNPs, or ginger - derived nanoparticles.

Although previous studies of similar nanoparticles have found an effect of nanoparticle shape and size on antibody responses, such a trend was not seen at significant levels for the DENV2 - E vaccine.

To create a new dengue virus vaccine, Stefan Metz, Shaomin Tian in the laboratories of Aravinda de Silva, Chris Luft and Joe DeSimone at the University of Carolina, Chapel Hill, USA designed nanoparticles of various shapes and sizes using Particle Replication in Non-wetting Template (PRINT) technology.

The group is looking at ginger, and other plants, as potential «nanofactories for the fabrication of medical nanoparticles.»

Now, in a new study using laboratory - grown cells and mice, Johns Hopkins scientists report that a method they used to track metabolic pathways heavily favored by cancer cells provides scientific evidence for combining anti-cancer drugs, including one in a nanoparticle format developed at Johns Hopkins, that specifically target those pathways.

«There have been a lot of lab studies looking at silver nanoparticles showing that they are highly toxic to bacteria, fungi, other microorganisms,» explains Ben Colman, a postdoctoral researcher at Duke University who led the study.

This week, at the American Chemical Society's annual meeting in San Diego, biomolecular engineer David Gracias of Johns Hopkins University discussed the progress he and his colleagues have made in gluing nanoparticles to bacteria.

But what does this curious finding, revealed yesterday by researchers at the University of Bristol, UK, mean about the safety of nanoparticles and medical treatments based on them?

Arnd Pralle, a physics researcher at the State University of New York at Buffalo, has developed a technique for employing magnetic fields to heat up nanoparticles that have been implanted in neurons.

With this in mind, scientists from the Center for Nanomedicine at Johns Hopkins, led by Hanes, encapsulated the BPTES in a nanoparticle capsule coated in polyethylene glycol, a molecule used widely in medicines and industrial products, using a method they developed to provide a more uniform coating.

There are still many questions that need to be answered about toxicity of silver nanoparticles, said Kuiken at the Project on Emerging Nanotechnologies.

The study appeared in the April 14 print edition of Chemical Communications in the article «Visualizing Nanoparticle Mobility in Liquid at Atomic Resolution,» by Madeline Dukes, an applications scientist at Protochips Inc. in Raleigh, N.C.; Benjamin Jacobs, an applications scientist at Protochips; David Morgan, assistant manager of the Cryo - Transmission Electron Microscopy Facility at Indiana University Bloomington; Harshad Hegde, a computer scientist at the Virginia Tech Carilion Research Institute; and Kelly, who is also an assistant professor of biological sciences in the College of Science at Virginia Tech.

Mitragotri reckons that the particles could provide a way to get drugs into the body at a more constant concentration, or substances such as iron oxide nanoparticles, which increase contrast in magnetic resonance imaging.

The first included pictures of individual nanoparticles» atomic structures at 100,000 - times magnification — the highest resolution images ever taken of nanoparticles in a liquid environment.

Now, Arnold and his team at NYU Tandon's MicroParticle PhotoPhysics Laboratory for BioPhotonics (MP3L) are the first to find a way to determine the density of charges on an area of a WGM micro-bead's surface, as well as the charge of an ensnared nanoparticle or virus, by measuring how light frequency fluctuates as the tiny particle follows its wobbly course around the sphere.