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gold nanoparticles News
Portable Biosensor Uses Light at Nanoscale to Detect Sepsis in Minutes
LAUSANNE, Switzerland, Jan. 28, 2020 — Time is critical when diagnosing sepsis, but the tests currently used to identify this disease can take up to 72 hours. Researchers at the Laboratory of Bionanophotonic Systems (BIOS) at École Polytechnique Fédérale de Lausanne (EPFL) have developed an optical biosensor that reduces sepsis diagnosis time from several days to a few minutes. The portable biosensor is based on nanoparticle-enhanced digital plasmonic imaging. The device employs an optical metasurface
Light, Nanotechnology Could Prevent Bacterial Infections in Implants
BARCELONA, Spain, May 24, 2019 — Researchers have devised a novel technique that uses nanotechnology and photonics to dramatically improve the performance of medical meshes for surgical implants and help prevent antibiotic-resistant bacteria.
Laser-Based Imaging Leads to Better Lung Disease Treatment
CHAPEL HILL, N.C., Oct. 9, 2014 — How sticky is snot? The rest of the world might not ask that question every day, but a group at the University of North Carolina does. They now have an answer, thanks to a laser-based imaging method, and it could enable doctors to monitor and better...
Femtosecond Lasers Used to Administer Drugs
OKINAWA, Japan, and DUNEDIN, New Zealand, June 26, 2014 — A system using femtosecond lasers in conjunction with nanotechnology enables targeted and controlled drug distribution, presenting treatment possibilities for Parkinson’s disease and other ailments. Existing drug delivery procedures cannot...
Creation of Living Materials Shows Potential
CAMBRIDGE, Mass., March 25, 2014 — A new approach to materials synthesis has shown promise in the creation of living elements.
Imaging Technology Could Unlock Mysteries of a Childhood Disease
ATLANTA, Jan. 2, 2014 — A superresolution imaging technique that allows the structure of a respiratory virus to be seen in living cells could help unlock the virus’s secrets, including how it enters cells and replicates, and why certain lung cells escape relatively...
Nonlinear media controls light with light
HOUSTON – A variety of nonlinear media, each with tailored optical properties, could be produced using a gold-disk patterning method to perform four-wave mixing. Developed at Rice University, the method is the first to produce materials that can achieve...
Laser-Controlled Switch Turns Blood Clotting On, Off
CAMBRIDGE, Mass., July 26, 2013 — Laser-controlled gold nanoparticles that release DNA molecules to switch blood clotting on and off could help doctors better control blood clotting in patients undergoing surgery, or promote wound healing.
Controlling Light … with Light
HOUSTON, May 22, 2013 — Gold nanoparticles arranged into geometric patterns can control incoming light with light via a four-wave mixing process, transforming its output into a different color, Rice University theoretical and applied physicists say. The technique could be...
Gold nanoparticles boost QD glow
GAITHERSBURG, Md. – A DNA template that controls the distance between gold nanoparticles and quantum dots can predictably increase or decrease the intensity of a quantum dot’s fluorescence. The breakthrough could lead to the use of quantum dots as a component in...
Gold Nanoparticles Boost QD Glow
GAITERSBURG, Md., Feb. 5, 2013 — A DNA template that controls the distance between gold nanoparticles and quantum dots can predictably increase or decrease the intensity of a quantum dot’s fluorescence. The breakthrough could lead to the use of quantum dots as a component in better...
Lasers Tune Common Nanoparticles to Near-IR Wavelengths
HOUSTON, Jan. 4, 2013 — Diverse types of ordinary nanoparticles can be selectively heated on demand by short laser pulses at near-infrared wavelengths. The technique could advance the use of these particles in medical and industrial applications.
Nanobubbles Destroy Some Cells, Treat Others
HOUSTON, Dec. 4, 2012 — A single laser blast can activate plasmonic nanobubbles that selectively kill diseased cells while at the same time treating others, and leaving neighboring healthy cells untouched.
Implantable Silk Micromirrors Enhance Imaging
MEDFORD/SOMERVILLE, Mass., Nov. 30, 2012 — Silk-based implantable optics that significantly enhance tissue imaging can simultaneously enable photothermal therapy, monitor drug delivery and administer drugs.
DNA Origami Nanolenses to Visualize Single Molecules
BRAUNSCHWEIG, Germany, Nov. 2, 2012 — Overlapping plasmonic fields, created by positioning two gold nanoparticles on DNA origami, form a nanolens that acts as a nanoantenna capable of enhancing the fluorescent emission of a single molecule, researchers in Germany report.
Nanoantenna Made of DNA Captures, Emits Light
PARIS, Aug. 1, 2012 — A bio-inspired light nanoantenna has been created using two gold nanoparticles, short DNA strands and a tiny fluorescent molecule that can capture and emit light. The discovery paves the way toward the development of highly efficient LEDs and...
Plasmonic Chains Act Like Polymers
HOUSTON, July 16, 2012 — New research that seeks to establish points of reference between plasmonic particles and polymers might lead to smaller computer chips, better antennae and improvements in optical computing.
Nanoparticle-Laser Method Targets Chemo Drugs
HOUSTON, April 10, 2012 — A potential treatment method for drug-resistant cancer uses gold nanoparticles to convert laser energy into “plasmonic nanobubbles,” which allow chemotherapy drugs to enter single cells. Delivering chemotherapy with nanobubbles is 30 times more...
Nanostars Seen as Superior for SERS
HOUSTON, March 29, 2012 — Synthesized starfruit-shaped gold nanorods could strengthen applications that rely on surface-enhanced Raman spectroscopy.
Simple nanoantenna separates colors of light
GOTHENBURG, Sweden — A new nanoantenna directs red and blue colors in opposite directions and could lead to optical nanosensors that can detect very low concentrations of gases or biomolecules. Historically, a structure that is smaller than the wavelength of...
Frontiers in Optics to Highlight Optics Advances
SAN JOSE, Calif., Oct. 13, 2011 — Frontiers in Optics (FiO) 2011, the Optical Society of America’s (OSA) 95th annual meeting, will highlight the latest advances in photonics, optical science and engineering. Held in conjunction with Laser Science XXVII, the annual meeting of...
Light from Nanoparticles Controlled
HOUSTON, Oct. 3, 2011 — Rice University researchers have created a technique to control plasmonic scattering from gold nanoparticles using liquid crystals. The researchers use voltage to sensitively manipulate the alignment of liquid crystal molecules that alternately...
Gold Nanoparticles Detect Flu in Minutes
ATHENS, Ga., Aug. 8, 2011 — Physicians and health officials may no longer have to choose between flu tests that are either accurate yet time-consuming or rapid but error-prone, thanks to a new detection method that can identify influenza in minutes at only a fraction of a...
Light Joins Nanoparticles into New Materials
ARGONNE, Ill., March 29, 2011 — A low-power laser — similar to the common office laser pointer — can cause gold and carbon nanoparticles to assemble into long chains that follow the laser beam as it moves. Researchers from Argonne National Laboratory shined a...
Mix of Nanoparticles, DNA Create Photonic Crystals
ROCHESTER, N.Y., Jan. 28, 2011 — Scientists have created a diamond-like lattice composed of gold nanoparticles and viral particles, woven together and held in place by strands of DNA. The structure — a distinctive mix of hard, metallic nanoparticles and organic viral pieces...
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April 2024
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