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Hamamatsu Corp. - Earth Innovations LB 2/24

All-Metal Detector has Ultranarrow Absorption Band

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EVANSTON, Ill., Oct. 2, 2014 — A new all-metal photodetector with an ultranarrow absorption band could lead to biosensors with greater sensitivity than ever. The device achieved a bandwidth of 12 nm by exploiting plasmonic surface lattice resonances of nanowire and nanoring arrays on optically thick, reflective metallic films. “It's been a challenge to sense very small particles or very low concentrations of a substance,” said Northwestern University professor Dr. Koray Aydin, one of the developers. “The beauty of our design is that we found a way to engineer the material by using a different...Read full article

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    Published: October 2014
    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...
    AmericasBiophotonicsIllinoisKoray AydinnanoNorthwestern UniversityplasmonicsResearch & TechnologySensors & Detectors

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