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Skip to Search Results- 2Achal, Roshan
- 2Anagaw, Amsalu Y.
- 2Antolak, John Anthony.
- 2Avendano Nandez, Jose L
- 2Chen, Ke
- 2Chen, Yunfeng
- 14Particles (Nuclear physics)
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Results for "departments_tesim:"Department of Physics""
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Fall 2014
Confinement is known to suppress order in condensed matter. This is well exemplified in phase transitions such as freezing, as well as the superfluid transition in liquid helium, which occur at lower temperatures in confinement than in the bulk. We provide in this thesis a demonstration of a...
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Fall 2010
The main theme of this thesis is the interplay between superfluidity and localization, in a system of strongly correlated Bose particles. Driving this investigation is the search for yet unobserved phases of matter, such as the so-called supersolid. Using state-of-the- art, numerically exact...
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Surface and Borehole Seismic Images at the International Continental Drilling Program Outokumpu Borehole: Implications for Reflectivity of the Crystalline Crust
DownloadFall 2011
The study area, Outokumpu, is a hard rock area and it is well known for its unconventional Precambrian massive Cu-Co-Zn sulphide deposits (~1.97 Ga) which were discovered in 1910. This study was conducted to understand the seismic reflection characteristic in hard rock environment in Outokumpu,...
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Target Volume Delineation in Dynamic Positron Emission Tomography Based on Time Activity Curve Differences
DownloadSpring 2013
Tumor volume delineation plays a critical role in radiation treatment planning and simulation, since inaccurately defined treatment volumes may lead to the overdosing of normal surrounding structures and potentially missing the cancerous tissue. However, the imaging modality almost exclusively...
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Temperature dependence of the piezoelectric shear coefficient of PMN-PT, LiNbO3 and PZT transducers
DownloadSpring 2014
Piezoelectric transducers are widely used as sensitive detectors of stress and to generate nanometer scale displacements. However, their piezoelectric coefficients often decrease substantially at cryogenic temperatures, limiting their performance in, e.g., low temperature STMs (scanning tunneling...
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Spring 2024
THz optics and scanning probe microscopy (SPM) techniques have gone through several decades of development, enabling numerous research studies and applications related to ultrafast phenomena at the nanoscale. Advancements in THz technology enable physical processes in materials to be identified...
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Fall 2021
The advent of the terahertz scanning tunneling microscope (THz-STM) brings with it a new method of observing and characterizing the ultrafast dynamics of materials. The sub-nanometer spatial resolution of an ultra-high vacuum scanning tunneling microscope (UHV-STM) coupled with the sub-picosecond...
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Terahertz scanning tunneling microscopy on metals, semiconductors, and carbon nanostructures
DownloadSpring 2024
Marin Calzada, Jesus Alejandro
Scanning probe microscopes routinely provide atomic resolution of numerous materials, but lack the tools to investigate their ultrafast dynamics. Laser pulses can be generated in the femtosecond or even attosecond regime, but their spatial application is restricted by the diffraction limit....