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  • Liquid-gated carbon nanotube transistor noise sources and sensitivity limits

    Creator:
    Sharf, Tal
    Abstract:
    Low-dimensional electronic materials offer a platform to observe biological processes with unprecedented spatial and temporal resolution. Carbon nanotubes (CNTs) are the closest physical analog to an ideal 1D system and can be scaled and integrated into multiplexed electronic circuitry. The molecular structure of a CNT is also biocompatible, making them...
    Resource Type:
    Dissertation
    Full Text:
    Limits Abstract approved: __________________________________________________ Ethan D. Minot Low

  • The synthesis, optical, and transport properties of SnZrS₃

    Creator:
    Harada, Daniel Ryan
    Abstract:
    Semiconducting materials which can be ambipolarly doped are highly desirable in many electronics applications, including use as solar cell materials. SnZrS₃ is being investigated for the possibility of ambipolar doping, with potential applications as a solar cell absorber layer. This dissertation covers the synthesis of SnZrS₃ and the related compound...
    Resource Type:
    Masters Thesis
    Full Text:
    characterization methods. In the first section production methods will be described, as well as some of the

  • Heterojunction Assisted Impact Ionization at the ZnS/Si Interface and Cu_10Te_4S_13 Photodiodes

    Creator:
    Reidy, Christopher F.
    Abstract:
    Several topics are presented in this dissertation, each of which has applications to solar cells and photodetectors. First, we discuss the growth of Cu10Te4S13, copper tellurium tetrahedrite. This material has interesting optical properties; it has a large joint density of states at the conduction band maximum and valence band minimum,...
    Resource Type:
    Dissertation
    Full Text:
    ∫ 𝛿[𝐸𝑏(�⃑� )−𝐸𝑎(�⃑� ) − ℏ𝜔]𝑑 3𝑘 (6) 8 𝜌𝑏𝑎(ℏ𝜔) is the

  • Longitudinal magnetoresistance of single-crystal mercury

    Creator:
    Fickett, F. R.
    Abstract:
    The longitudinal magnetoresistance of single-crystals of mercury is investigated experimentally, both in the low field and the high field regions. The variation of the magnetoresistance with crystal purity, orientation, size and temperature below 4.2°K is presented. In the low field region the data are discussed in terms of existing theory....
    Resource Type:
    Dissertation
    Full Text:
    AN ABSTRACT OF THE THESIS OF FREDERICK ROLAND FICKETT for the Ph. D. (Name) (Degree) in PHYSICS

  • Surface effects in photoemmission from sodium

    Creator:
    Whitefield, Rodney Joe
    Abstract:
    An investigation was made of the photoelectric emission from sodium and the alteration in the emission produced by sulfur deposited onto a sodium surface. Measurements were made at the temperature of liquid nitrogen for photon energies between 2.0 ev and 4.5 ev. The sodium was investigated in the form of...
    Resource Type:
    Dissertation
    Full Text:
    was possible to discriminate against the Side Section Upper Chamber Sapphire 1 1 Window Side

  • Growth and characterization of the p-type semiconductors SnS and BiCuOSe

    Creator:
    Francis, Jason
    Abstract:
    BiCuOSe and SnS are layered, moderate band gap (ε[subscript G] ≈ 1 eV) semiconductors that exhibit intrinsic p type conductivity. Doping of BiCuOSe with Ca results in a slight expansion of the lattice and an increase of the hole concentration from 10¹⁸ cm⁻³ to greater than 10²⁰ cm⁻³. The large...
    Resource Type:
    Dissertation
    Full Text:
    . The physical interpretation of the experimental results. Acta Crystallographica, 7(1):41–49, January

  • First principles studies of optical, electronic and mechanical properties of organic molecules and solids

    Creator:
    Barras, Faye Lyn
    Abstract:
    This thesis presents the results of quantum-mechanical first principles calculations of optical, electronic and mechanical properties of organic molecules and solids, which have diverse potential applications such as photovoltaics, flexible electronics, and mechanical catalysts with applications in force sensors and self-healing materials. The electronic and optoelectronic properties of organic thin...
    Resource Type:
    Dissertation
    Full Text:
    C60 ((a) and (b) respectively), and with ADT-TIPS-CN ((c) and (d) respectively) are shown. The

  • Exchange interaction studies in magnetic semiconductors by neutron scattering

    Creator:
    Wiren, Zachary Quincy
    Abstract:
    Theories predict that making a dilute magnetic semiconductor strongly p -type would allow it to remain ferromagnetic at room temperature. This is of intrest as a ferromagnetic semiconductor would allow for a great many applications in the field of spintronics. Neutron scattering experiments were undertaken to better understand the antiferromagnetic...
    Resource Type:
    Dissertation
    Full Text:
    . . . . . . . . . . . . . . . 11 2.2 A section of the ZnS lattice structure which takes the form of two face centered cubic

  • Amorphous TiO₂ : A Thin Film Synthesis Route to Stabilization of Metastable TiO₂ Brookite

    Creator:
    Haggerty, James E. S.
    Abstract:
    Structure-specific synthesis processes are of key importance to the growth of polymorphic functional compounds such as TiO₂, where material properties strongly depend on structure as well as chemistry. The robust growth of the brookite polymorph of TiO₂, a promising photocatalyst, has been difficult in both powder and thin-film forms due...
    Resource Type:
    Dissertation and Video
    Full Text:
    image of the same section after cooling to room temperature. (d) is the number of sites(black) and the

  • The dynamics of oxygen vacancies in zirconia : an analysis Of PAC data

    Creator:
    Alves, Mauro A.
    Abstract:
    Nuclear techniques such as perturbed angular correlation (PAC) sample the hyperfine interactions of a large number of probe atoms in specific crystallographic sites. Real crystals contain static defects producing a distribution of electric field gradients (EFGs) that add to the ideal EFG of the crystal at any given probe site....
    Resource Type:
    Dissertation
    Full Text:
    keV and 245 keV. The half-life of the intermediate level is 85 ns. 7 1f2 42.5 d 7% 3fl 619 O