Open Access. Powered by Scholars. Published by Universities.®
- Keyword
-
- Physical Sciences and Mathematics, Physics (4)
- Adenomatous (1)
- Amplitude Analysis (1)
- Atomic Force Microscopy (1)
- Axion Search (1)
-
- Birefringence (1)
- Branching (1)
- B± → φKS0π± (1)
- Capabilities (1)
- Critical Field (1)
- Current density (1)
- Cytoplasmic (1)
- Decays (1)
- Demonstrator (1)
- Depairing (1)
- Double Layer (1)
- Dynein (1)
- Ecology (1)
- Electrostatic (1)
- Films (1)
- Fractions (1)
- Hybrid system (1)
- LIS1 (1)
- Magnetic-Field (1)
- Majorana (1)
- Measurements (1)
- Medicine and Health Sciences, Biological Sciences (1)
- Meissner Effect (1)
- Microscopy (1)
- Multiferroic Janus Nanofibers (1)
Articles 1 - 9 of 9
Full-Text Articles in Entire DC Network
Current Induced Depairing And Mixed State Behavior In The Bite/Fete Interfacial Superconductor, Charles Louis Dean Ii
Current Induced Depairing And Mixed State Behavior In The Bite/Fete Interfacial Superconductor, Charles Louis Dean Ii
Theses and Dissertations
The Bi2Te3/FeTe heterostructure intersects several phenomena and key classes of materials in condensed matter physics: topological insulators, superconductivity, magnetism, and the physics of interfaces. While neither the topological insulator (BiTe) nor the iron chalcogenide (FeTe) are themselves superconductors, superconductivity forms in a thin 7nm interfacial layer between the two. The restricted dimensionality and the extraordinarily conductive normal state, possibly sourced by the topologically protected surface states, have led to the observation of novel phenomena such as the Likharev vortex explosion and transitions in behavior resulting from the interplay between current induced depairing and the Berezinski-Kosterlitz-Thouless regime. The measured depairing current …
An Axion Search With The Majorana Demonstrator, Clinton Gray Wiseman
An Axion Search With The Majorana Demonstrator, Clinton Gray Wiseman
Theses and Dissertations
The Majorana Demonstrator is an array of P-type point contact (PPC) germanium detectors enclosed in a multi-layered shield at the 4850’ level of the Sanford Underground Research Facility. Its primary goal is to search for the neutrinoless double beta decay of 76Ge. The initial 10 kg-y dataset, taken over a two year period, has energy thresholds as low as 1 keV. This allows concurrent rare event searches for the signatures of dark matter and solar axions in the low energy spectrum. Though the detectors are routinely operated with sub-keV energy thresholds, changing noise conditions in the array have made it …
Two-Electrode Measurements Of Electrostatic Double Layer Potentials With Atomic Force Microscopy, Jason Giamberardino
Two-Electrode Measurements Of Electrostatic Double Layer Potentials With Atomic Force Microscopy, Jason Giamberardino
Theses and Dissertations
In this dissertation, I provide a thorough description of my development of theoretical, analytical, and experimental techniques pertaining to novel measurements of the electrostatic double layer (EDL) using atomic force microscopy (AFM), among other techniques. The EDL refers to the structure formed by ions that exists at the interface between a solid and a liquid. The EDL is an important physical element of many systems and its behavior has been of interest to scientists for many decades. Because many areas of science and engineering are moving to test, build, and understand systems at smaller and smaller scales, this work focuses …
Branching Fractions And Amplitude Analysis Of B± → Φks0Π± Decays, Alyssa D. Loos
Branching Fractions And Amplitude Analysis Of B± → Φks0Π± Decays, Alyssa D. Loos
Theses and Dissertations
The Belle detector is a particle physics detector that is located around the collision point of the asymmetric-energy e+e- collider KEKB. Both detector and collider are located at the KEK international lab in Japan. This thesis uses the full Belle data sample of 772 × 106 BB¯ pairs collected at the Υ(4S) resonance. Decays with large b → s penguin transitions in the standard model (SM), such as B± → φKS0π±, could be a source of CP violation. This is important in the race to find the mechanism behind the universe’s matter-antimatter imbalance. b → s penguin transitions allow us …
Ecology And Virulence Capabilities Of Vibrios Isolated From The Pristine North Inlet Estuary, Savannah Leigh Klein
Ecology And Virulence Capabilities Of Vibrios Isolated From The Pristine North Inlet Estuary, Savannah Leigh Klein
Theses and Dissertations
Vibrio bacteria are Gram negative, motile organisms that occur naturally in most coastal and estuarine ecosystems. Some vibrios are important human pathogens, including Vibrio parahaemolyticus and Vibrio vulnificus. The CDC estimates that vibrios cause 80,000 cases of disease each year in the United States alone. Most cases are caused by V. parahaemolyticus, which infects humans after the consumption of contaminated raw or undercooked seafood, primarily oysters. V. parahaemolyticus causes mild gastroenteritis that is self-limiting unless the patient is immunocompromised. V. vulnificus has a much lower incidence of disease (100 cases in the USA yr-1); however, this organism causes much more …
Birefringence Microscopy With Magnetic-Field Aligned Multiferroic Janus Nanofibers, Yu-Chun Yeh
Birefringence Microscopy With Magnetic-Field Aligned Multiferroic Janus Nanofibers, Yu-Chun Yeh
Theses and Dissertations
Multiferroic Janus nanofibers consisting of barium titanate (BaT iO3) and cobalt ferrite (CoFe2O4) have the magnetoelectric effect between piezoelectric and magnetostrictive phases. By applying an external magnetic field on Janus nanofibers,the dipole moment in piezoelectric phase would be formed and produce the electric field. Since poly(N-vinylcarbazole) (PVK) polymer has anisotropic property, the birefringence can be induced by the electric field. We generalize the magnetic field birefringence quadratic equation and coupling constant for PVK polymer with Janus nanofibers. Birefringence microscopy is used to observe the PVK birefringence under an external magnetic field from 0 to 2500 Oe. The numerical results show …
Optical Investigation Of A Hybrid System Of Plasmonic Structures And Semiconductor Quantum Dots, Matthew B. Seaton
Optical Investigation Of A Hybrid System Of Plasmonic Structures And Semiconductor Quantum Dots, Matthew B. Seaton
Theses and Dissertations
Next generation integrated nanophotonic devices must fabricate large numbers of nanoscaled light coupling structures onto a single wafer: emitters such as quantum dots, resonators such as nanocavities and plasmonic nanoparticles, photonic crystal and nano-plasmonic waveguides, among others. Before precision planning and engi- neering will be possible a thorough understanding of the interaction between these structures must be documented. We present in this work an investigation of the interaction between quantum dots and plasmonic structures in the weak coupling regime. We found that surface plasmon supporting silver structures placed about 100nm from InGaAs quantum dots enabled an all optical polarization dependent …
Regulation Of Cytoplasmic Dynein By Lis1 And Adenomatous Polyposis Coli, Timothy Joshua Hines
Regulation Of Cytoplasmic Dynein By Lis1 And Adenomatous Polyposis Coli, Timothy Joshua Hines
Theses and Dissertations
Cytoplasmic dynein 1 (dynein) is a microtubule motor that plays a role in mitosis, cell migration, and minus-end directed microtubule-based transport. The lissencephaly protein, Lis1, and its binding partner, Ndel1, are critical regulators of cytoplasmic dynein (Niethammer et al., 2000). In humans, haploinsufficiency of Lis1 leads to lissencephaly, a devastating developmental neurological disorder characterized by severe brain malformation, leading to cognitive and motor defects, and progressively worsening seizures (Dobyns et al., 1993). While Lis1 is known to play a role in regulating dynein-dependent functions such as neuronal migration and mitotic spindle orientation during development, the protein is still highly expressed …
Depairing Current Density In Nbtin Superconducting Films, Nahid Shayesteh Swails
Depairing Current Density In Nbtin Superconducting Films, Nahid Shayesteh Swails
Theses and Dissertations
In this work, we systematically investigate the superconducting properties of Niobium Titanium Nitride (NbTiN) superconducting films with different geometries, which at low temperature remain superconducting. NbT iN superconducting films with a few nm thickness are widely used in devices such as superconductor-insulatorsuperconductor (SIS) mixers, superconducting cavities and resonators and superconducting nanowire single-photon detectors (SNSPD). In all these applications, films of varying dimensions are required to achieve optimal performance. The initial thickness of our samples was 125 nm deposited on a silicon substrate. We change the thickness of our samples using lithography and ion milling. We measure and analyze the thickness …