Name: Amanda Belding Undergraduate Institution: The Ohio State University Major: Engineering Physics REU Advisor: Dr. Chris Hammel Project Title: Membrane project: Direct detection of magnetic resonance Abstract: The goal is to create a Nuclear Magnetic Resonance (NMR) probe that mechanically detects the resonance of different solid samples. Since quality membranes are noise sensitive, the setup will optimize the new probe and character experimental parameters.
Project Title: Nernst-Ettinghausen effect measurements of nickel in a coil geometry
Project Title: In pursuit of a new perovskite-type phase resonance
Graphene in single-atom thick sheets is used in studying electrons transferring because of its superconductivity and high mobility. Graphene does not have band gap which can help in switch ON/OFF ratio in transistors when electrons move through its material. GeH and NaSn2As2 are new materials that have been studied in order to know their physical probabilities, and how they can make the heat and the electrons transfer through their materials. The bulk material of GeH is used in building transistors because it has an indirect band gap. GeH and NaSn2As2 which have van der Waals interactions among their bounds are crystal material can be exfoliated to single layer and multilayers nanosheets of layers by using PDMs method of exfoliation. Mechanically exfoliation GeH and NaSn2As2 crystal materials in single layers or few multilayers of nanosheets can give clean, flate, and high-quality flakes. Therefore, after exfoliation to nanosheets layers, we put them on Si/SiO2 to distinguish between single layers and multilayers under the electronic microscope. Exfoliation of GeH to single layer or multilayer nanosheets helps in studying the directed band gap, electrons mobilities, vibration models, and fabrication. NaSn2As2 can also be exfoliated to single layers or few multilayers nanosheets which can help in studying their physical probabilities and the pattern chemical on their surface.
Name: Amy Rice Undergraduate Institution: Columbus State Community College Major: Biology REU Advisor: Dr. Jessica Winter Project Title: Optimization of quantum dots shell growth for DNA embedding Abstract:
Here we are interest in a photo-switchable quantum dot system that employs photosensitive DNA and gold nanoparticles to switch between light and dark states via forster resonance energy transfer (FRET). To improve the application of this concept, the specific process for binding DNA to QDs is being investigated. Rather than attach the DNA to the QD surface, this concept deals with embedding the DNA into the QD ligand during shell growth in order to improve stability and conjugation ratios. This project describes an optimized procedure for quantum dot shell growth that was developed using methodology based on the work of Zhengtao et. all, 20125.1 It was found that after increasing MPA and DNA concentrations to 4 times the original amount, the fluorescence of the resulting samples was indicative of a more stable particle, however further study should be done to achieve reproducibility for this concept.