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    Electroless deposition and nanolithography can control the formation of materials at the nano-scale for plasmonic applications

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    Type
    Article
    Authors
    Coluccio, Maria Laura
    Gentile, Francesco
    Francardi, Marco
    Perozziello, Gerardo
    Malara, Natalia
    Candeloro, Patrizio cc
    Di Fabrizio, Enzo M. cc
    KAUST Department
    Material Science and Engineering Program
    Physical Science and Engineering (PSE) Division
    Date
    2014-03-27
    Permanent link to this record
    http://hdl.handle.net/10754/325364
    
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    Abstract
    The new revolution in materials science is being driven by our ability to manipulate matter at the molecular level to create structures with novel functions and properties. The aim of this paper is to explore new strategies to obtain plasmonic metal nanostructures through the combination of a top down method, that is electron beam lithography, and a bottom up technique, that is the chemical electroless deposition. This technique allows a tight control over the shape and size of bi- and three-dimensional metal patterns at the nano scale. The resulting nanostructures can be used as constituents of Surface Enhanced Raman Spectroscopy (SERS) substrates, where the electromagnetic field is strongly amplified. Our results indicate that, in electroless growth, high quality metal nanostructures with sizes below 50 nm may be easily obtained. These findings were explained within the framework of a diffusion limited aggregation (DLA) model, that is a simulation model that makes it possible to decipher, at an atomic level, the rules governing the evolution of the growth front; moreover, we give a description of the physical echanisms of growth at a basic level. In the discussion, we show how these findings can be utilized to fabricate dimers of silver nanospheres where the size and shape of those spheres is controlled with extreme precision and can be used for very large area SERS substrates and nano-optics, for single molecule detection. 2014 by the authors; licensee MDPI, Basel, Switzerland.
    Citation
    Coluccio M, Gentile F, Francardi M, Perozziello G, Malara N, et al. (2014) Electroless Deposition and Nanolithography Can Control the Formation of Materials at the Nano-Scale for Plasmonic Applications. Sensors 14: 6056-6083. doi:10.3390/s140406056.
    Publisher
    MDPI AG
    Journal
    Sensors
    DOI
    10.3390/s140406056
    PubMed ID
    24681672
    PubMed Central ID
    PMC4029638
    ae974a485f413a2113503eed53cd6c53
    10.3390/s140406056
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Material Science and Engineering Program

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