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Filtering by: Creator Kawula, Steven P. Remove constraint Creator: Kawula, Steven P. Degree Field Physics Remove constraint Degree Field: Physics Degree Level Bachelor's Remove constraint Degree Level: Bachelor's

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  • Characterizing a Coupled Photodiode-LED System for Neuro-Sensing Applications

    Creator:
    Stevens, Gregg
    Abstract:
    I investigate the feasibility of a micron-sized biosensor designed to measure neural activity. The circuitry of the biosensor is composed of graphene, some photodiodes, and a light-emitting diode. Many of these biosensors would be injected into a subject’s brain, and when powered by near-infrared light, they would glow in response...
    Resource Type:
    Undergraduate Thesis
    Full Text:
    denoted as δp), not the total change in resistance (dR). The two are related by Equation 9: δp ≡ Δ

  • Simulating the Dynein Motor Protein: A Monte Carlo Approach to Achieve Coordinated Stepping

    Creator:
    Kiatvongcharoen, Jin
    Abstract:
    The motor protein dynein is responsible for cellular processes such as axonal transport and cell division by delivering vital information along the microtubule track. A failed delivery can cause severe damage to the cell’s functionality and lead to neurological diseases. Despite dynein’s rich history in cellular research, the mechanism of...
    Resource Type:
    Undergraduate Thesis
    Full Text:
    probability notation, we want p(xi, xf ) (the probability of xi and xf ) but we have p(xf |xi) (the

  • Optical Tweezer Trapping of Colloidal Polystyrene and Silica Microspheres

    Creator:
    Peters, Kyle C.
    Abstract:
    Optical trapping is a tool used throughout a wide variety of disciplines rang- ing from precisely probing and manipulating sub-micron organisms in biol- ogy to analyzing fundamental charge transfer in colloidal physics. This thesis presents research involving optical tweezer force measurements of polystyrene and silica microspheres. In addition, preliminary work...
    Resource Type:
    Undergraduate Thesis
    Full Text:
    function of a trapped particle over time can be described by Boltzmann statistics [25]; p(x)dx = Ce �E(x

  • Drunken Walking: A Novel Brownian Dynamics Simulation for the Mechanochemical Cycle of the Dynein Motor Protein

    Creator:
    Waczak, John L.
    Abstract:
    The dynein molecule is a peculiar motor protein recognized for its unique stepping behavior. Sometimes it steps forwards. Other times it steps backwards. It has even been observed to occasionally shuffle by beginning a step with the same domain many times in row. These motions make dynein an interesting object...
    Resource Type:
    Undergraduate Thesis
    Full Text:
    Newton’s second law ∑ i Fi = ṗ = mẍ (3.1) Thus, determining the dynamics of a system boils down to

  • 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:
    expression for the spectral density of the sphere is: I(Ω) = kBT ξπ 1 Ω2 + ω2c + kBT 2kH γ2 [δ(ωp − Ω

  • Measuring Bubble Pressure in Glacier Ice

    Creator:
    Clonch, Cameron E.
    Abstract:
    Recent observations of tidewater glaciers find that the currently accepted model for predicting ice melt vastly underestimates observed melt rates. The release of pressurized air bubbles into the ocean from pores in the ice is one process that can amplify glacier melt. To incorporate this process into models, we need...
    Resource Type:
    Honors College Thesis
    Full Text:
    [1] in the glacier ice. Figure inspiration credits to Steven Earle [5]. This process is one of

  • Connecting computational thinking and mathematics: an examination of linguistic opportunities and challenges

    Creator:
    Glickman, Abbie A.
    Abstract:
    In this paper, I used a linguistic lens of translanguaging and semiotics to examine how K-12 mathematics teacher candidates (TCs) create meaning around computer science (CS) and mathematics concepts in a computational thinking (CT) setting. I defined the term “disciplinary repertoire” as a mirror to the concept of a linguistic...
    Resource Type:
    Honors College Thesis
    Full Text:
    appreciate my dad, Steven Glickman, and grandmother, Gail Glickman, for taking the time to read through my

  • A Study of Charging Behaviors in Organic Semiconductors using Optical Trapping

    Creator:
    Founds, Graham M.
    Abstract:
    We measure the charging and discharging of two organic materials, PCBM and ADT-TES-F. These materials are studied through the noncontact method of particle trapping known as Optical Tweezers, where an IR laser is used to constrain the motion of a coated or noncoated silica sphere while its positional data is...
    Resource Type:
    Undergraduate Thesis