Index Catalog // ScholarsArchive@OSU

Gene Expression, Structure Elucidation, and Bioactivity of Aspergillus Natural Products

Creator:: Neuhaus, George F.
Abstract:: The study of natural products (NPs) and their application has shaped humanity. Starting with the idea of using plants as medicine, it has now grown into the science of purifying and identifying organic molecules from nature to study their inherent biological activities. Understanding the molecular structures of NPs is the...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF George Francis Neuhaus for the degree of Doctor of Philosophy

Scanning photocurrent microscopy study of photovoltaic and thermoelectric effects in individual single-walled carbon nanotubes

Creator:: DeBorde, Tristan
Abstract:: Carbon Nanotubes are a unique family of nanostructures that have shown remarkable promise for mechanical, electrical, and optical applications. Fundamentally similar to the earlier discovered Buckminsterfullerene (C₆₀), carbon nanotubes are hollow cylinders formed from a single sheet of carbon atoms. The research presented in this dissertation investigates several carbon nanotube...
Resource Type:: Dissertation
Full Text:: . 12 1.5 References 1 Wilder, J. W. G., Venema, L. C., Rinzler, A. G., Smalley, R. E. & Dekker

Terahertz Imaging and Nonlinear Spectroscopy of Semiconductors using Plasmonic Devices

Creator:: Thompson, Zachary James
Abstract:: In this dissertation, a series of studies in the field of terahertz (THz) science are presented, specifically using nonlinear THz spectroscopy. We exploit huge field enhancement and subwavelength confinement in plasmonic structures. There are three distinct projects which will be discussed: nonlinear THz spectroscopy using plasmonic induced transparency (PIT), THz-triggered...
Resource Type:: Dissertation
Full Text:: (2.13) It should also be noted that �µ0 = n2 c2 = 1 v2 , where n = √ � �0 = √ �R is the index of

Investigation of bipolar resistive switching in zinc-tin-oxide for resistive random access memory

Creator:: Murali, Santosh
Abstract:: Resistive random access memory (RRAM) is a non-volatile memory technology based on resistive switching in a dielectric or semiconductor sandwiched between two different metals. Also known as memristors, these devices are potential candidates for a next-generation replacement for flash memory. In this thesis, bipolar resistive switching is reported for the...
Resource Type:: Masters Thesis
Full Text:: in Fig. 4. The SET and RESET process with the observed ohmic conduction due to electron hopping is

Properties of Large Superfluid Helium Droplets

Creator:: Alghamdi, Maha
Abstract:: In this dissertation, I describe the experimental investigation of large superfluid helium droplets. The goal and direction of this thesis is to facilitate the use of these droplets as part of our project ss-EDI. The overall scheme of ss-EDI is to dope proteins inside helium droplets and collect a diffraction...
Resource Type:: Dissertation
Full Text:: . P.; Goodrich, A. C.; Mishra, S. H.; Nichols, S. R., NMR methods for structural studies of large

Evaluation of amorphous oxide semiconductors for thin film transistors (TFTs) and resistive random access memory (RRAM) applications

Creator:: Rajachidambaram, Jaana Saranya
Abstract:: Thin-film transistors (TFTs) are primarily used as a switching element in liquid crystal displays. Currently, amorphous silicon is the dominant TFT technology for displays, but higher performance TFTs will become necessary to enable ultra-definition resolution high-frequency large-area displays. Amorphous zinc tin oxide (ZTO) TFTs were fabricated by RF magnetron sputter...
Resource Type:: Masters Thesis
Full Text:: dielectric constant (εr) for ZTO calculated using slopes (S1 and S2) of Schottky and Poole-Frenkel

Terahertz Induced Non-linear Electron Dynamics in Nanoantenna Coated Semiconductors at the Sub-picosecond Timescale

Creator:: Stickel, Andrew
Abstract:: This dissertation is an exploration of the material response to Terahertz (THz) radiation. Specifically we will explore the ultrafast electron dynamics in the nonperturbative regime in semiconductors that have been patterned with nanoantenna arrays using broadband, high intensity, THz radiation. Three main semiconductor materials will be studied in this work....
Resource Type:: Dissertation
Full Text:: ) and strained (R state) V 3d states. B) A representation of the V 3d|| states superimposed of a section

Electronic and Optical Properties of Defects in Amorphous Oxide and Transition Metal Dichalcogenide Semiconductors

Creator:: Vogt, Kyle
Abstract:: The optical and electronic properties of amorphous oxide thin films depend crucially on chemical composition, and deposition process variations which give rise to sub-gap defect states. Consequently, there is a need for a reliable, high-throughput method to extract sub-gap defect densities of states in amorphous oxide thin films. We present...
Resource Type:: Dissertation
Full Text:: 1 & 2: George Mattson provided the raw data for the photocurrent maps in Figure 2.2c and Figure

Resource allocation methods for quality-of-service provisioning in heterogeneous wireless networks

Creator:: Chakchouk, Nessrine
Abstract:: The increased use of mobile wireless devices that we have recently been witnessing, such as smartphones, tablets, e-readers, and WiFi enabled devices in general, is driving an unprecedented increase in the amount of data traffic. This fast market adoption of the wireless technology along with the tremendous success of multimedia...
Resource Type:: Dissertation
Full Text:: . That is, for all (u, v) ∈ V 2, (u, v) ∈ E when duv ≤ r, where duv is the distance between nodes u and

Interlayer Electronic Interactions in Twisted and Stacked Bilayer Graphene

Creator:: Patel, Hiral
Abstract:: The photophysical properties of two-dimensional (2D) layered van der Waals (vdW) materials, and their heterostructures are manifestly distinct from crystalline bulk materials. Recently, the discovery of new 2D vdW materials and strongly-bound interlayer excitons in these materials has created a new branch in nanoscience. As such, there are a number...
Resource Type:: Dissertation

ScholarsArchive@OSU

Gene Expression, Structure Elucidation, and Bioactivity of Aspergillus Natural Products

Scanning photocurrent microscopy study of photovoltaic and thermoelectric effects in individual single-walled carbon nanotubes

Terahertz Imaging and Nonlinear Spectroscopy of Semiconductors using Plasmonic Devices

Investigation of bipolar resistive switching in zinc-tin-oxide for resistive random access memory

Properties of Large Superfluid Helium Droplets

Evaluation of amorphous oxide semiconductors for thin film transistors (TFTs) and resistive random access memory (RRAM) applications

Terahertz Induced Non-linear Electron Dynamics in Nanoantenna Coated Semiconductors at the Sub-picosecond Timescale

Electronic and Optical Properties of Defects in Amorphous Oxide and Transition Metal Dichalcogenide Semiconductors

Resource allocation methods for quality-of-service provisioning in heterogeneous wireless networks

Interlayer Electronic Interactions in Twisted and Stacked Bilayer Graphene

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