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Sprinkled silver nanocubes enhance light absorption

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Just as salt sprinkled over a piece of meat enhances its flavor, tiny silver cubes sprinkled at random on a polymer-coated gold surface enhance the material’s ability to “perfectly” absorb light of a given wavelength. A simple chemical synthesis method from Duke University uses a dusting of silver nanocubes to modify the absorptive properties of a metallic surface, yielding a simple and tunable way to create large-area “perfect” absorbers. When separated from the underlying metal by a very thin insulating layer, the cubes act as tiny antennas that cancel out...Read full article

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    Published: March 2013
    Glossary
    lithography
    Lithography is a key process used in microfabrication and semiconductor manufacturing to create intricate patterns on the surface of substrates, typically silicon wafers. It involves the transfer of a desired pattern onto a photosensitive material called a resist, which is coated onto the substrate. The resist is then selectively exposed to light or other radiation using a mask or reticle that contains the pattern of interest. The lithography process can be broadly categorized into several...
    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.
    photonics
    The technology of generating and harnessing light and other forms of radiant energy whose quantum unit is the photon. The science includes light emission, transmission, deflection, amplification and detection by optical components and instruments, lasers and other light sources, fiber optics, electro-optical instrumentation, related hardware and electronics, and sophisticated systems. The range of applications of photonics extends from energy generation to detection to communications and...
    Americasantennachemical synthesisCristian CiracìDavid SmithDuke Universitydynamic inksenergyenergy harvestinggold surfaceImagingindustriallarge-area absorberslight absorberlithographymetallic surfacemetamaterialsMicroscopynanonanothin insulatorNorth Carolinaphotonicsreflective propertiesResearch & Technologyself-assembled nanocubesSensors & Detectorssilver nanocubessolar panelsTech Pulse

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