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nanoparticles News
Color Superlensing Could Break Through Diffraction Barrier
KAZAN, Russia, Jan. 23, 2020 — Researcher Sergey Kharinstev and his team at Kazan Federal University recently published a paper in Optics Letters where they detail the design of a new type of metalens capable of imaging beyond the optical diffraction limit.
Biomaterial from Bacteria Shows Promise for Photonic Applications
HOUSTON, Sept. 9, 2019 — An international research team showed that a material created using tellurium nanorods, which are produced by naturally occurring bacteria, could be an effective nonlinear optical material that is capable of protecting electronic devices against...
Injected Nanoparticles Could Enable Sight Beyond Visible Spectrum
WORCESTER, Mass., Sept. 3, 2019 — No mammalian photoreceptor can effectively detect light that exceeds 700 nm, and mammals are unable to see near-infrared (NIR) light or to project a NIR image to the brain. To enable the detection of longer wavelength light in mammals, scientists at...
A Safer, More Efficient Fiber Laser from Doping with Nanoparticles
WASHINGTON, July 19, 2019 — Scientists at the U.S. Naval Research Laboratory (NRL) are using nanoparticles to build fiber lasers that are safer for the eyes and more efficient. The core of the laser’s silica fiber is doped with rare earth ions of holmium. With the aid of...
ITMO Researchers Make Inroads in Optimizing Nanoparticles’ Response to Light
ST. PETERSBURG, Russia, May 23, 2019 — Physicists from ITMO University have discovered new features of dielectric nanoparticles’ optical response using an improved method for electromagnetic field analysis that can take into account more complex configurations of bias currents inside the...
Photoelectrode Traps, Converts Light Efficiently
SAPPORO, Japan, Sept. 10, 2018 — A photoelectrode developed by a team at Hokkaido University harvests visible light across a wide spectral range using a semiconductor titanium dioxide (TiO2) layer sandwiched between gold film (Au film) and gold nanoparticles (Au NPs). A key feature...
Lithography, DNA Used to Build Structures That Could Lead to New Metamaterials
EVANSTON, Ill., Jan. 19, 2018 — Researchers have developed a technique for creating optical structures that could lead to new classes of optical materials and devices. Their technique combines a traditional fabrication method, top-down lithography with a new method, programmable...
Discovery Could Lead to Materials with Brighter, Faster Light Emission
ZÜRICH, Switzerland, Jan. 16, 2017 — Scientists have discovered why a certain class of nanocrystals — caesium lead halide quantum dots &mdash shines in such bright colors. They have also confirmed that these nanocrystals emit light extremely quickly. Previously studied...
Pulsed Laser Irradiation Enhances Nanoplate Properties
KUMAMOTO, Japan, Nov. 29, 2017 — When gold-coated silver nanoplates are irradiated with a pulsed laser, they release silver ions which are known to produce a strong antibacterial effect. Researchers observed that silver nanoparticles (AgNPs) — known to have antibacterial...
Single-Nanoparticle Maps Pave the Way for Better, Safer Nanotechnology
GOTHENBURG, Sweden and KONGENS LYNGBY, Denmark, Oct. 30, 2017 — A method that combines electron microscopy and optical microscopy to map individual nanoparticle responses in different situations and contexts could pave the way for better nanomaterials and safer nanotechnology. Researchers at Chalmers University...
New Laser Design Offers Multicolor Output of Tissue in Real Time
EVANSTON, Ill., July 14, 2017 — A cost-effective laser design that outputs multi-color lasing could allow encrypted, encoded, redundant and faster information flow in optical fibers, and allow multi-color medical imaging of diseased tissue in real time. The laser has been...
Light-Driven Catalysis Can Reduce CO
2
Production in Industrial Applications
DURHAM, N.C., March 21, 2017 — Rhodium nanoparticles have demonstrated the ability to capture the energy in UV light and use it to selectively catalyze the conversion of carbon dioxide (CO2) to methane. Such light-driven catalysis could be used to help reduce the level of CO2 in...
IPL Sintering Advance Could Improve Electronics Manufacturing
CORVALLIS, Ore., Feb. 1, 2017 — Research into the use of Intensed Pulsed Light (IPL) to rapidly fuse conductive nanoparticles has revealed that densification in IPL increases the density of a nanoparticle thin-film or pattern, with greater density leading to functional...
Plasmonic Nanoheaters Enable Photothermal Cancer Therapy
COPENHAGEN, Denmark, Aug. 8, 2016 — In vitro and in vivo studies have positively correlated the heat generation of plasmonic nanoparticle with their potential as cancer-killing agents. Using a single-particle and positron emission tomography (PET)-based platform, researchers from the...
Microfluidics Technique Mass-Produces Platinum Nanoparticles
LOS ANGELES, March 1, 2016 — A technique for producing nanoparticles that relies on microfluidics — a technology that manipulates tiny droplets of fluid in narrow channels — shows promise for transforming expensive, batch-by-batch nanoparticle production into...
Nanoparticles: Probing the Plasma Threshold
Apr 3, 2015 — Laser-induced plasma generation in nanoparticles has potential application in fields as diverse as medicine and materials processing. To fully harness this tool, it is important to understand how nanoparticles behave in strong laser fields and how...
Night Baseball: Made Possible by Light
Apr 3, 2015 — The nerve-racking snake draft is over, and everyone is on deck and ready for major league baseball’s first pitch on April 5. Being a rookie in a fantasy baseball league has made me contemplate just what it is I like about the game. I’ve...
Photothermal Nanoparticles Extend Range of Optogenetics
CHICAGO, March 12, 2015 — Targeted gold nanoparticles allow light to activate neurons, a finding that could enable the use of optogenetic techniques without genetic manipulation. “This is effectively optogenetics without genetics,” said professor Dr. Francisco...
Nanoparticle Works with 6 Types of Bioimaging
BUFFALO, N.Y., Jan. 21, 2015 — A new type of nanoparticle traceable through six distinct imaging methods could help medical professionals better diagnose diseases and enhance identification of the boundaries of tumors. The combination of imaging techniques could allow doctors to...
Fluorescent, Magnetic Nanoparticles Aid Bioimaging
CAMBRIDGE, Mass., Oct. 14, 2014 — Nanoparticles that fluoresce to enable tracking in the body can also be precisely manipulated with magnetic fields.
Imaging Shows Bubbles Could Make Energy-Efficient Nanoparticles
PRINCETON, N.J., Aug. 20, 2014 — High-speed cameras and UV-sensitive materials are helping advance understanding of bubbles — which could mean big things for nanoparticles. In fact, a system in which bubbles mix liquids is an energy-efficient route toward producing...
Laser Threading Creates Large-Scale Metamaterials
CAMBRIDGE, England, July 30, 2014 — A new laser-pulse technique has been used to create light-altering metamaterials in larger quantities than other techniques. Researchers at the University of Cambridge have developed a new method of nanoassembly involving plasmon-induced laser...
Fluorescence Sensor Diagnoses Diabetes
STANFORD, Calif., July 17, 2014 — A microchip that detects fluorescent signatures of antibodies associated with Type 1 diabetes could aid in prevention and early intervention. Created by a team from the Stanford University School of Medicine, the portable gold plasmonic microchip...
‘Nanojuice’ Aids Intestinal Imaging
BUFFALO, N.Y., July 8, 2014 — A cocktail of fluorescent dyes and nanoparticles could aid in the diagnosis of gastrointestinal ailments. Researchers at the University at Buffalo say their “nanojuice” enables detailed images of the small intestines in mice when used in...
Moving Mother Nature Indoors
Jul 1, 2014 — Artificial light is not pretty. Spending time under the harsh fluorescence of office, hospital or store lighting can be straining on the eyes and draining on morale. Leaning back in your office chair or hospital bed, or in the checkout line,...
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April 2024
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