Shared more. Cited more. Safe forever.
    • advanced search
    • submit works
    • about
    • help
    • contact us
    • login
    View Item 
    •   MOspace Home
    • University of Missouri-Columbia
    • Graduate Studies - Theses and Dissertations (MU)
    • Theses and Dissertations (MU)
    • Dissertations (MU)
    • 2014 Dissertations (MU)
    • 2014 MU dissertations - Freely available online
    • View Item
    •   MOspace Home
    • University of Missouri-Columbia
    • Graduate Studies - Theses and Dissertations (MU)
    • Theses and Dissertations (MU)
    • Dissertations (MU)
    • 2014 Dissertations (MU)
    • 2014 MU dissertations - Freely available online
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.
    advanced searchsubmit worksabouthelpcontact us

    Browse

    All of MOspaceCommunities & CollectionsDate IssuedAuthorAuthor/ContributorTitleSubjectIdentifierThesis DepartmentThesis AdvisorThesis SemesterThis CollectionDate IssuedAuthorAuthor/ContributorTitleSubjectIdentifierThesis DepartmentThesis AdvisorThesis Semester

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular AuthorsStatistics by Referrer

    Sub-2 nm platinum nanoparticles growth study and device applications

    Ramalingam, Balavinayagam, 1986-
    View/Open
    [PDF] research.pdf (5.446Mb)
    [PDF] public.pdf (5.601Kb)
    [PDF] short.pdf (117.9Kb)
    Date
    2014
    Format
    Thesis
    Metadata
    [+] Show full item record
    Abstract
    This work describes a tilted-target RF magnetron sputter deposition system to grow nanoparticles in a controlled way. With detailed characterization of ultra-high density (up to 1.1 ?�� 10[superscript 13] cm?�???) and ultra-small size Pt nanoparticles (0.5-2 nm), it explains their growth and crystalline properties on amorphous Al?��O?�� thin films. It is shown that Pt nanoparticle size and number density can be precisely engineered by varying selected experimental parameters such as target angle, sputtering power, substrate-surface-energy and time of deposition to control the energy of the metal atoms in the deposition flux. Based on rate equation modeling of nanoparticle growth, three distinct growth regimes, namely nucleation dependent, coalescence dependent and agglomeration dependent regimes, were observed. With this control over the growth regime, a myriad of nanoparticle configurations were observed for size dependent applications. We also demonstrate the use of these Pt NPs based floating gate devices for multi-level operation of a Non-Volatile Memory (NVM) Metal Oxide Semiconductor capacitor (MOSCAP) by controlled layer-by-layer charging. Finally, a novel application and the first demonstration of neutron sensors using Pt NP NVM MOS CAP using [superscript 10]B enriched dielectrics instead of Al?��O?�� are developed for their use in neutron detection. Initial results for neutron exposure on a functional [superscript 10]B enriched Pt NP embedded NVM device are shown, where dual layer devices exhibit a promising detection phenomena.
    URI
    https://hdl.handle.net/10355/44196
    Degree
    Ph. D.
    Thesis Department
    Electrical engineering (MU)
    Collections
    • Electrical Engineering and Computer Science electronic theses and dissertations (MU)
    • 2014 MU dissertations - Freely available online

    Send Feedback
    hosted by University of Missouri Library Systems
     

     


    Send Feedback
    hosted by University of Missouri Library Systems