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Filtering by: Alternative title ssim FS-234 Remove constraint Alternative title ssim: FS-234 Academic Affiliation Physics Remove constraint Academic Affiliation: Physics Degree Level Bachelor's Remove constraint Degree Level: Bachelor's

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  • Application of Coupled Oscillator Model to Terahertz and Optical Control of Plasmon Induced Opacity in Coupled Metamaterials

    Creator:
    Sprague, Milo X.
    Abstract:
    Terahertz (THz) frequencies of the electromagnetic spectrum have been underutilized when compared to neighboring microwave and infrared frequencies, largely due to the difficulties controlling and detecting these fields. In a step toward gaining control over THz frequencies, my advisor Dr. Yun-Shik Lee’s group experimentally demonstrated optical-pulse THz-control over a plasmonic...
    Resource Type:
    Undergraduate Thesis
    Full Text:
    35 fs, to 500 fs, and then up to 1 ps, we are able to observe the changes to Figure III-8 as shown

  • Molecular Dynamics on REX-GECO1 Reveal Structural Features Governing Fluorescence

    Creator:
    Rozanov, Nikita
    Abstract:
    Fluorescent proteins have emerged as an essential toolset for bioimaging, creating a demand for engineering proteins with new and improved fluorescent properties. In this thesis, I explore the atomistic structure of REX-GECO1, a newly engineered protein biosensor that has unique optical properties. Since this protein has no available crystal structure,...
    Resource Type:
    Undergraduate Thesis
    Full Text:
    time step is set to 2 fs, along with a rigid constraint on all bonds using the SHAKE algorithm. In

  • Travelling Wave Analysis of Nonlinear Maxwell Models with Applications to Nonlinear Optics

    Creator:
    Langlie, Noah
    Abstract:
    In 1877 John Kerr described an experiment that demonstrated a quadratic change in refractive index in a plate glass placed in a strong external electric field. This results in a nonlinear relationship between the average electric polarization within the materials and the intensity of the applied electric field. This opened...
    Resource Type:
    Undergraduate Thesis
    Full Text:
    following conditions is satisfied on Rn: 1. sup{ ∂fr ∂xr + ∂fs ∂xs + ∑ q 6=r,s(| ∂fq ∂xr |+ | ∂fq ∂xs

  • Simulating dynein’s powerstroke using Brownian dynamics

    Creator:
    Capek, Elliott L.
    Abstract:
    Dynein is a motor protein which transports cargo along tracks inside the cell. Like related motor proteins kinesin and myosin, dynein uses cellular energy to take steps with its two foot domains. Unlike kinesin or myosin, dynein’s stepping pattern is highly varied: it can take steps between zero and 60nm...
    Resource Type:
    Undergraduate Thesis

  • Simulating dynein’s powerstroke using Brownian dynamics

    Creator:
    Capek, Elliott
    Abstract:
    Dynein is a motor protein which transports cargo along tracks inside the cell. Like related motor proteins kinesin and myosin, dynein uses cellular energy to take steps with its two foot domains. Unlike kinesin or myosin, dynein’s stepping pattern is highly varied: it can take steps between zero and 60nm...
    Resource Type:
    Undergraduate Thesis

  • Study of Organic Semiconductors Using Time-Resolved Charge Measurements at the Microscale

    Creator:
    Wallace, Richard
    Abstract:
    Understanding charge transfer in organic semiconductors is important for developing devices like organic light emitting diodes and flexible electronics. Optical tweezers have been used in many disciplines for trapping, manipulating, and analyzing microscopic objects such as microspheres, micro-organisms, and other colloidal particles. Using optical tweezers, studies have measured the average...
    Resource Type:
    Undergraduate Thesis
    Full Text:
    -spring system and can be described using Hooke’s Law. (See figure 2.1) Fs = −ks~r Here ks is the force

  • Complex Index of Refraction of Multi-walled Carbon Nanotubes in Strong Terahertz Fields

    Creator:
    McCuen, Dalton R.
    Abstract:
    Carbon nanotubes are the subject of intense interest in virtually every field, from medicine to nano-scale electrical components. Multi-walled nanotubes exhibit a strong nonlinear response to high-field strength terahertz radiation. This research uses terahertz pulses with field strength exceeding 1 MV/cm generated by means of optical rectification utilizing a lithium...
    Resource Type:
    Undergraduate Thesis
    Full Text:
    optical rectification [10]. A titanium sapphire laser system generates 100 fs pulses centered around 800

  • Predicting the Percentage: Relating the Refractive Index to Effective Medium Theory in Combination Dielectric Films

    Creator:
    Farmer, Skylar
    Abstract:
    Transparent conductive oxides (TCO) are at the forefront of technology with their uses in touch screen phones and televisions, solar cells and more. Titanium dioxide and tin dioxide are two TCOs that have been studied in depth on their own, so to further explore these TCOs, this project focuses on...
    Resource Type:
    Undergraduate Thesis
    Full Text:
    . The ellipsometer model is a multi-wavelength FS-1EX(G2), using software version 3.03. The FilmSense

  • Terahertz field enhancement in nanoantennas on gallium arsenide

    Creator:
    Brequigny, Victor
    Abstract:
    Terahertz (THz) spectroscopy is a great tool not only to study fundamental physical processes such as many-body Coulomb interaction but also to develop ultrafast electronic devices. More specifically, intense THz fields interacting with semiconductors have exhibited strong nonlinear effect involving extreme carrier dynamics. In this experiment, intense THz radiation was...
    Resource Type:
    Undergraduate Thesis
    Full Text:
    120 fs at a wavelength of 800 nm. The original beam is consecutively split into three different beams

  • High Field Terahertz Spectroscopy of Optically Excited Gallium Arsenide

    Creator:
    Compeau, James
    Abstract:
    High field time-domain terahertz spectroscopy (TDS) is used to determine the time dependent transmission and the time-delay and optical-power dependent conductivity of a wafer of gallium arsenide (GaAs). Gallium arsenide is a direct band-gap semiconductor and has potential as a computer processor component. Analysis of the transmission of terahertz (THz)...
    Resource Type:
    Undergraduate Thesis
    Full Text:
    of four lasers. The resulting beam has a 130 fs pulse. Each pulse is 1 mJ at a repetition rate of 1