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Alluxa - Optical Coatings LB 8/23

Silver Ions’ Dispersion from Alloys Benefits Optical Sensors, Other Applications

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HOUSTON, April 27, 2021 — A study led by Rice University and the University of Duisburg-Essen in Germany used hyperspectral dark-field imaging microscopy to reveal the multistep mechanism that causes silver ions to dissipate from gold-silver alloy nanoparticles. Gold-silver alloys are catalysts that can be used to degrade environmental pollutants and, in antibacterial coatings, to kill bacteria on surfaces. In nanoparticle form, the alloys could be useful as optical sensors. A problem is the tendency of the silver to release from the alloy nanoparticles. The international collaboration supports industry’s...Read full article

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    Published: April 2021
    Glossary
    nano
    An SI prefix meaning one billionth (10-9). Nano can also be used to indicate the study of atoms, molecules and other structures and particles on the nanometer scale. Nano-optics (also referred to as nanophotonics), for example, is the study of how light and light-matter interactions behave on the nanometer scale. See nanophotonics.
    plasmonics
    Plasmonics is a field of science and technology that focuses on the interaction between electromagnetic radiation and free electrons in a metal or semiconductor at the nanoscale. Specifically, plasmonics deals with the collective oscillations of these free electrons, known as surface plasmons, which can confine and manipulate light on the nanometer scale. Surface plasmons are formed when incident photons couple with the conduction electrons at the interface between a metal or semiconductor...
    Research & TechnologyeducationRice UniversityUniversity of Duisburg-EssenCoatingsImagingMicroscopynanosilveralloyshyperspectralhyperspectral dark-field imaging microscopyoptical sensorsnanoparticlesplasmonicsdefenseindustryACS Nano

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