Bulletin of the American Physical Society
Joint Fall 2010 Meeting of the APS Ohio Section and AAPT Appalachian and Southern Ohio Sections
Volume 55, Number 8
Friday–Saturday, October 8–9, 2010; Marietta, Ohio
Session C1: Applied Physics |
Hide Abstracts |
Chair: Cavendish McKay, Marietta College Room: Rickey Science Center 162 |
Saturday, October 9, 2010 8:00AM - 8:12AM |
C1.00001: Cesium-133, Lithium-6, and Lithium-7 Hyperfine Study Robert Vollmerhausen I report a spectroscopy study on Cesium-133, Lithium-6, and Lithium-7. Hyperfine splittings are created using a controllable laser with a wavelength of 852.350 nm for Cesium, and a wavelength of 670.980 nm. This study covers the D2 line of Cesium and the D1 and D2 lines of Lithium-6 and Lithium-7. These are examined using two different techniques. These techniques are absorption spectroscopy, and transmission spectroscopy. The results from this study are compared to those found by Daniel Steck and Michael Ghem. [Preview Abstract] |
Saturday, October 9, 2010 8:12AM - 8:24AM |
C1.00002: Measuring Young's Modulus of Glass by Optical Interference Albert Popson Two small plates of glass are separated by a thin film of air and suspended between two support posts. Light from a coherent source is reflected from the surfaces, creating an interference pattern. An applied load changes the thickness of the film of air, which affects the interference pattern. Young's modulus can be calculated from measurements of changes in the interference fringes as a function of load. [Preview Abstract] |
Saturday, October 9, 2010 8:24AM - 8:36AM |
C1.00003: Mechanosensation and the Primary Cilium Joseph Glaser, Andrew Resnick The primary cilium has come under increased scrutiny as a site for mechano- and chemosensation by cells. We have undertaken a program of study using mouse renal cell lines from the cortical collecting duct to quantify how mechanical forces arising from fluid shear are transduced into cellular responses. Fluid flow through a model nephron has been analyzed to determine the in vivo forces. A novel tissue culture flow chamber permitting accurate reproduction of physiologically relevant conditions has been calibrated. We have determined that in vivo conditions can be accurately modeled in our flow chamber. [Preview Abstract] |
Saturday, October 9, 2010 8:36AM - 8:48AM |
C1.00004: Non Destructive Evaluation using Terahertz Time Domain Spectroscopy and Imaging Lindsay Owens, Carla Benton, Douglas Petkie, Jason Deibel The Terahertz (THz) spectral range has received considerable attention for the development of non-destructive evaluation applications. This is due to the relatively high transmission through most dielectrics and high reflectivity off of metallic surfaces. THz spectroscopy can provide a non-destructive, standoff analysis technique capable of detecting corrosion on metallic surfaces under obscurants and defects in composite materials on aerospace structures. Such techniques have been utilized in the X-ray region of the spectrum, but unlike x-rays, THz is non-ionizing and non-destructive, enabling it to be safer for the user, and cause no harm to the sample. Continuous-wave and time-domain terahertz techniques were used to perform imaging on metallic and composite samples exhibiting corrosion and other defects. [Preview Abstract] |
Saturday, October 9, 2010 8:48AM - 9:00AM |
C1.00005: Scattering of Terahertz Radiation from Oriented Nanotubes Satya Ganti, Nicholas Schroeder, Gregory Kozlowski, Jason Deibel, Finn Eichhorn, Peter Jepsen, Krzysztof Koziol The objective of this research is to characterize the interaction of various oriented carbon nanotubes with terahertz --time domain spectroscopy. This work is performed using a system capable of angle- and polarization- dependent scattering measurements. The scattering, transmission, and absorption properties of bulk materials and devices constructed from oriented nanotubes are determined as a function of the nanomaterial density, growth conditions, impurity level, and composition. Analysis is performed in order to understand the scattering behavior based on using approaches such as surface roughness using SEM, coherent back scattering, short-time fourier transforms effective medium theory is used to approximate the optical properties of the nanotube materials using Maxwell-Garnett and Bruggeman theories. [Preview Abstract] |
Saturday, October 9, 2010 9:00AM - 9:12AM |
C1.00006: Designing Energy-Efficient Heat Exchangers--Creating Micro-Channels on the Aluminum Fin Surface Tyler Brest, Khalid Eid, Andrew Sommers In this project, a new method of patterning micro-channels on aluminum and copper surfaces is described for the purpose of using those features to manipulate the surface wettability. The channels will provide preferential drainage paths for droplets to flow from the surface. Photolithography is used for the fabrication of the micro-scale channels and a hydrophobic polymer is used to reduce the surface energy of the aluminum and copper plates. The scope of this project includes applications in the design of Heating, Ventilating, and Air Conditioner (HVAC) systems which would increase their efficiency by reducing the water retention on their surfaces. [Preview Abstract] |
Saturday, October 9, 2010 9:12AM - 9:24AM |
C1.00007: Photoemission of Doped Lithium Tetraborate Crystals Being Developed for Neutron Dosimetry Christina Dugan, Robert Hengehold, Stephen McHale, John McClory, James Petrosky Lithium tetraborate or LTB crystals are being developed for possible use in solid state neutron detectors. Already used in thermo luminescence dosimeters, LTB is of interest due to its large cross section for neutron capture by lithium and boron. The reaction between lithium and a neutron produces an alpha particle and tritium. When boron interacts with a neutron an alpha particle and lithium are produced. These reactions are the basis for neutron detection, and an LTB crystal enriched with Mn should show improved efficiency for neutron detection. There is, however, a lack of fundamental characterization information regarding this useful material, particularly with regard to its electronic configuration. In this study, photoemission spectroscopy has been used to determine the energy level structure of manganese doped Lithium Tetraborate crystals. Measurements were made using UV photons from the storage ring of the synchrotron at Louisiana State University. Comparison will be made between Mn doped LTB crystals and undoped crystals. [Preview Abstract] |
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700