Browsing Physics URC Student Scholarship by Title
Now showing items 1-20 of 92
-
A Study of Pt-Sn and Rh-Sn Ethanol Catalysts by Scanning Tunneling Microscopy and Spectroscopy
(2008-01-01)This study focused on electrochemically and visually characterizing tin (Sn), platinum (Pt) and rhodium (Rh) nanoparticles on platinum sputtered mica electrodes by means of Scanning Tunneling Microscopy (STM) and Scanning ... -
A Study of Pt-Sn Nanoparticles by Scanning Tunneling Microscopy (STM) and Ultraviolet-visible (UV-vis) Absorption
(2010-01-01)This study focused on visually and electrochemically characterizing tin (Sn), and platinum (Pt) nanoparticles by Scanning Tunneling Microscopy and UV-Absorption. The purpose of this study was to analyze the correlation ... -
An Analysis of the Effect of Rectangular Geometries on the Large-scale Circulation in Turbulent Rayleigh-B?nard Convection
(2011-01-01)In this research we have explored the behavior of Rayleigh-B?nard convection in a rectangular enclosed cell whose length is twice as big as its depth. In Rayleigh-B?nard convection, a fluid-filled cell is heated from the ... -
Analyzing Particle Transport in a Non-Neutral Plasma Trap. Scott Rees and Brenda Carrillo
(1999-01-01)Our research focused on particle transport, which we studied by confining non-neutral plasma in a Malmberg-Penning trap. A Malmberg-Penning trap is an apparatus that consists of an axial magnetic field and two confining ... -
Analyzing the Amplitude Scaling of Asymmetry-induced Transport in Pure Electron Plasmas
(2000-01-01)The objective of this research is to determine the scaling of the plasma's radial transport with asymmetry amplitude. The experiment was performed by applying an asymmetric potential to the various wall sectors of the ... -
Antiferromagnetic ordering of the magnetic superconductor TmNi2B2C
(2009-01-01)We used a capacitive dilatometer to measure the thermal expansivity of the magnetic superconductor TmNi2B2C along the c-axis and a-axis. We studied the antiferromagnetic phase transition, and found the ordering temperature ... -
Assisting with hardware R&D for the DRIFT Dark Matter Detection Project
(2012-07-01)After learning how to use the DipTrace circuit board design program, I was able to assist with three projects which were part of the effort to commission a new DRIFT detector. First, I have produced diagrams for boards ... -
Automated Data Acquisition on Superconducting Wires using LabVIEW
(2006-01-01)One of the most important characteristics for superconductor application is critical current. Precise measurement of critical current is complicated by its dependence on temperature and applied magnetic field and also by ... -
Building a Working Robot
(2006-01-01)The purpose of this project was to design and construct a functional robot, capable of competing in a competition. My robot, christened ?Mars Lift? is a model of a Space Elevator ? a new engineering concept, which will ... -
Calibration of the DRIFT (Direction Recoil Identification From Tracks) detector
(2002-01-01)In order to detect a form of dark matter known as Weakly Interacting Massive Particles (WIMPs), Professor Snowden-Ifft of Occidental College created the Direction Recoil Identification From Tracks (DRIFT) detector. For my ... -
Cantilever Magnetometry using a Single Uranium Crystal.
(2000-01-01)We have determined the lower critical magnetic field values of a single-crystal of type II superconductor LuNi2B2C at temperatures between 3K and 11K using cantilever magnetometry. This compound is part of a class of rare ... -
Constructing DRIFT-2: The New Dark Matter Detector. Atanas Petkov and Stanley Burgos
(2004-01-01)Dark Matter is one of the greatest mysteries in Physics today. DRIFT - a dark matter detector designed to search for WIMPs (a dark matter candidate) has been working and trying to find dark matter for several years now. ... -
Data Acquisition in the Detection of Dark Matter
(1998-01-01)Dark Matter constitutes up to 90% of the mass in the Universe. A promising candidate for Dark Matter is the Weakly Interacting Massive Particle (WIMP). We are building a Multi Wire Proportional Chamber to detect WIMPs. The ... -
Data Analysis and Simulation in the DRIFT Dark Matter Experiment
(2010-01-01)The DRIFT-II Dark Matter Experiment relies on careful and robust analysis of data in order to extract a very faint signal from a large amount of noise. We have greatly improved the analysis of the Fe-55 calibration data, ... -
De Hass van Alphen Measurements of RBe13 Compounds, R = Pr, Th, La
(1998-01-01)Since its discovery in the early 1930s, the de Haas van Alphen effect (dHvA) has become a very powerful tool in fermiology, the study of the Fermi surface of metals. dHvA is the oscillation of susceptibility with a changing ... -
Detecting Dark Matter - The DRIFT Dark Matter Project
(2011-01-01)Scientists have postulated the existence of invisible 'dark matter' since the 1930?s. This conclusion is based on the observation that galaxies are spinning at rates that cannot be explained by the visible matter and on ... -
Developing a 3-D Imaging Systemto Trace the Path of a Rising Bubble
(2002-01-01)A single CCD camera conventionally provides a 2-D image of a moving particle. Studying rising bubbles in fluids, however, necessitates a 3-D imaging system in order to extract information such as velocity and path of the ... -
Development of an aluminum-coated scintillator for use as the central cathode in the DRIFT dark matter detector
(2007-01-01)Determining the properties of dark matter remains one of the largest problems in contemporary physics. A prominent candidate for dark matter is the Weakly Interacting Massive Particle (WIMP). To detect WIMPs, the Directional ... -
Dispersion of Ions in the Drift Dark Matter Detector
(2012-07-01)This summer I worked on measuring the drift velocity and dispersion of ions in a miniature version of the DRIFT (Directional Recoil Identification from Tracks) detector. To do so I focused a flash lamp on a thin aluminum ... -
DRIFT-III: Engineering a Prototype Dark Matter Detector
(2010-01-01)DRIFT (Directional Recoil Identification From Tracks) is a dark matter collaboration that uses Multiwire Proportional Counters (MWPCs) to detect minute changes in current due to subatomic events. The goal of this collaboration ...