Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 14 of 14 for “"magnetic trap"”.
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Lithograph regulation of cellular mechanical properties c by Tsu-Te Judith Su.
A magnetic trap in combination with two-photon fluorescence microscopy was used to determine the cytoskeletal stiffness and three-dimensional (3D) cytoskeletal structure of NIH 3T3 fibroblast cells plated on micropatterned substrates. Microcontact printing of self-assembled monolayers (SAMs) of …
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Quantum Controlled Collisions and Magnetic Trapping of Ultracold NaLi Molecules
… for its both non-zero electric (0.175 Debye) and magnetic (2𝜇𝐵) dipole moments and small two-body scattering rate, as predicted by the universal model for cold collision. Additionally, ²³Na⁶Li is the lightest bi-alkali molecule, and the theoretical simulation of collisions is relatively feasible …
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Testing CPT And Antigravity With Trapped Antihydrogen At ALPHA
… antihydrogen is produced and confined in a magnetic trap. Antihydrogen spectroscopy is of primary interest for precision tests of CPT invariance - one of the most important symmetries of the Standard Model. In particular, the 1S-2S transition frequency in hydrogen is the most precisely known …
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⁸⁷Rubidium Bose-Einstein condensates : machine construction and quantum Zeno experiments
… is then captured and cooled in a magneto-optical trap. The atoms are then transfered into a cloverleaf style Ioffe-Pritchard magnetic trap and cooled to quantum degeneracy with radio frequency induced forced evaporation. Condensates containing up to 20 million atoms can be produced every few …
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Microtraps and waveguides for Bose-Einstein condensates
… up to 3 x 10⁶ ²³Na atoms were loaded into magnetic microtraps and waveguides on a microfabricated "atom chip" using optical tweezers. Single-mode propagation was observed along the waveguide. Closer to the microfabricated surface, perturbations to the waveguide potential spatially modulated …
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Force-induced calcium concentration change and focal adhesion translocation : effects of force amplitude and frequency
… of force. Results from a while applying nN-level magnetic trap shear forces to the cell apex via integrin-linked magnetic beads. Both biological responses were monitored continuum, viscoelastic finite element model of magnetocytometry that represented experimental focal adhesion attachments …
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Zeeman relaxation of cold iron and nickel in collisions with ³He
… shell, making them good candidates for loading a magnetic trap with the buffer gas cooling method. Nickel and iron atoms are introduced via laser ablation into an experimental cell containing a background 3He buffer gas. Elastic collisions with the buffer gas thermalize the atoms to less than 1K. …
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Creation of an all-optical Bose-Einstein condensate
… In particular on the initial cooling and trapping of 87Rb atoms, with the creation of a large all-optically cooled Bose-Einstein condensate as a proof of the temperatures and densities achieved. In most cold atoms experiments, the Bose-Einstein condensate is achieved by evaporating the …
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Double-Loop Microtrap Array for Ultracold Atoms
A novel kind of magnetic microtrap is demonstrated for ultracold neutral atoms. It consists of two concentric loops of radii $r_1$ and $r_2$ having oppositely oriented currents. A magnetic field minimum is generated in three dimensions that can be used to trap the atoms with a trap depth of about 1 …
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Construction of a quantum gas microscope for fermionic atoms
… resolution. We set up separate 3D magnetooptical traps for capturing and cooling both ²³Na and ⁴⁰K. These species are then trapped simultaneously in a plugged quadrupole magnetic trap and evaporated to degeneracy; we obtain a sodium Bose-Einstein condensate with about a million atoms and a …
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A Trapped Single Ion Inside a Bose-Einstein Condensate
… have been built. Systems of single or a few trapped ions have been used to demonstrate universal quantum computing algorithms and to detect variations of fundamental constants in precision atomic clocks. Now in our experiment we investigate how the two systems can be advantageously combined. …
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Atom-light interactions in ultracold anisotropic media
… anisotropic media were conducted. Methods to trap ultracold neutral atoms in novel traps with widely tunable trap frequencies and anisotropies were investigated. In comparison to conventional magnetic traps, it was found that magnetic traps generated by soft ferromagnets have various …
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A new apparatus to simulate fundamental interactions with ultracold atoms
… the two miscible components |F = ±1⟩ if trapped by a spin-independent potential, avoiding the known phenomenon of â€TMbuoyancyâ€TM. Studying the dynamics of such systems for sufficiently long times, with a mixture subject to Zeeman differential energy shifts, requires a specific effort …
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A Magneto-Gravitational Neutron Trap for the Measurement of the Neutron Lifetime
… neutrons without material wall interactions. The trap shape is designed to rapidly remove higher energy UCN that might slowly leak from the top of the trap, and can facilitate new techniques to count surviving UCN within the trap. We review the scientific motivation for a precise measurement of …