Electron paramagnetic resonance

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  • Statement Of Purpose: Pursuing My Career Goals

    in my endeavors. Research and Professional Experiences Despite not attending a research institution, I have received a strong education in the sciences and liberal arts. I have also obtained some research experience. In the summer of 2016, I was a REU participant at Miami University (Gary Lorigan Lab). The goal of my project was to advance a novel method of determining the local secondary structure of the [KIGAKI]3-NH2 (KIGAKI) peptide. Electron Spin Echo Envelop Modulation (ESEEM) is a form of pulsed electron paramagnetic resonance spectroscopy that detects modulation in the larmor frequency of a deuterium atom within 8Å of an electron spin. This modulation can be detected as an intense signal on the ESEEM spectrum. Using solid phase peptide synthesis (SPPS), I strategically incorporated a 2H-labeled residue (i) into the 4th or 10th residue of the sequence; along with a cysteine residue up to four amino acid positions away from the 2H-label (i+1, i+2, i+3, i+4). A spin-labeling reaction was performed to attach a nitroxide spin label (electron spin) to the cysteine side chain. I purified KIGAKI samples with high performance liquid chromatography (HPLC) and confirmed purity with matrix-assisted laser desorption/ionization-time of flight (MALDI-TOF). I then dissolved these peptide variants in alpha helical inducing solvent or incorporated them as a beta sheet in lipid vesicles. Since ESEEM spectroscopy has an 8Å detection limit, we proposed that alpha helical i+3 / i+4 and…

    Words: 893 - Pages: 4
  • Fabrication Lab Report

    Introduction: The lab experiment on Fabrication and Microwave Frequency Measurement of a ring Resonators was about finding the relative dielectric constant and the response of a ring resonator. These values are found by using a ring resonator and setting a frequency signal to the ring to resonate the signal. This lab also shows how to make the ring resonators from paper or any type of electric device from fabrication. Fabrication is used to print electric devices such as printed circuit boards.…

    Words: 1715 - Pages: 7
  • What Is Nanoelectromechanical Systems (NEMS?

    Nanoelectromechanical systems (NEMS). These devices because of their size, they come with properties such as reduced mass, high quality factor (Q factor) and very high fundamental resonance frequencies. These qualities of NEMS makes them desirable for numerable applications such as components of signal processing devices, actuators and high speed sensors. NEMS can be used to construct resonators through a process of surface nanomachining to achieve frequencies of above 10Ghz. The operation at…

    Words: 964 - Pages: 4
  • Parana Pine: An Analysis Of Young's Modulus Value

    most suitable component for structural application, because the 0.3% Mild Steel had the highest E/GPa value of 212.77 E/GPa compared with all the other materials used. Steel is a metal, so it is made up of metallic bonds, which means that the element largely consists of positive ions (positive charge) and delocalized electrons (free electrons of negative charge), the repulsion is balanced within the atom, a main reason to why metals are non-reactive to other elements. However one disadvantage…

    Words: 1494 - Pages: 6
  • John Thompson And John Dalton: The First Atomic Model

    His new model better described the structural components of the atom than Dalton’s featureless atom. Thompson used a Cathode Ray Tube, which was a sealed glass container, and shot a stream of electrons across the glass tube. When the particles stuck to the other end of the tube, it created a patch of light that indicated where the particles landed. Thompson discovered that by using a magnetic field, he could move and deflect particles. He found that particles would always move towards the…

    Words: 1041 - Pages: 5
  • Ultrafast Electron Microscopy Analysis

    Ultrafast Electron Microscopy has been demonstrated to be an effective table-top technique for imaging the temporally-evolving dynamics of matter with subparticle spatial resolution on the time scale of atomic motion. A stringent enhancement of the UEM temporal resolution is demanded for recording snapshots of the electron motion which will provide a real-time access to all microscopic motions outside the atomic core and radically change our insight into the workings of the microcosm. Here, we…

    Words: 1738 - Pages: 7
  • An Electric Circuit How Do They Work

    What is a circuit? How do they work? An electric circuit is a kind of path made up of wires that allows the flow of electrons. The circuit has to be made in a circular form, as the electrons must frequently move in a full loop, in which they will return to their original position and then complete the loop again. (“What is an electric circuit?”) The battery or another source of power provides the voltage, or ‘electrical push’, that makes the electrons move through the circuit. When the electrons…

    Words: 1035 - Pages: 5
  • Compound X Is A White Powder Observation Essay

    1. Observation. - Compound X is a white powder. It is a solid. 2. Questions. - What is compound X? - What will happen when compound X is heated and reacted with C20H14O4 (phenolphthalein – an acid-base indicator)? (1) - How does compound X react with C20H14O4 (phenolphthalein)? (2) - How does compound X react with water? (3) - How does compound X react with hydro chloric acid (HCL)? (4) 3. Predictions. - Compound X is calcium carbonate (CaCO3). - (1) When compound X is heated and reacted with…

    Words: 1145 - Pages: 5
  • Fepo4 Temperature

    Paragraph 1 The research done by Haines on how the atomic structure of FePO4 varies when temperature increases from 294K to 1073 shows few crystal chemical relationships between SiO2 and FePO4. There is a first order variation of cell parameters and atomic orientations with temperatures lower than 980K and α-phase plays a dominant role over β-phase at high temperature. For the α-phase FePO4, the cell parameters increase with a non-linear trend when temperature increases linearly. The volume…

    Words: 718 - Pages: 3
  • Temperature Lab Report

    1 WRITTEN ESSAY Paragraph 1 The FePO4 crystal is examined at various temperatures ranging between 294K and 1073K by neutron powder diffraction. At relatively low temperatures, FePO4 adopts an α-quartz structure, which is tetrahedral. High pressures causes a phase change to a more dense octahedral structure, which is known as β-phase. The transition temperature is 980K. Cutoffs can be observed during the firstorder transition,. For α-phase, the increases in cell parameters…

    Words: 923 - Pages: 4
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