Browsing Faculty of Arts and Sciences by Title
Now showing items 14409-14428 of 24540
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Nanoscale Imaging of Phase Transitions with Scanning Force Microscopy
(2012-10-31)Nanoscale imaging of materials through phase transitions can provide valuable insight into the local nature of the transition and the emergence of order. The scanning force microscope used in the studies presented here is ... -
Nanoscale Imaging of RNA with Expansion Microscopy
(2016)The ability to image RNA identity and location with nanoscale precision in intact tissues is of great interest for defining cell types and states in normal and pathological biological settings. Here, we present a strategy ... -
Nanoscale Interplay of Strain and Doping in a High-Temperature Superconductor
(American Chemical Society (ACS), 2014)The highest-temperature superconductors are electronically inhomogeneous at the nanoscale, suggesting the existence of a local variable that could be harnessed to enhance the superconducting pairing. Here we report the ... -
Nanoscale Investigations of High-Temperature Superconductivity in a Single Atomic Layer of Iron Selenide
(2016-05-11)The potential of interface engineering to enhance electronic properties is exemplified in a single atomic layer of FeSe grown on SrTiO$_3$, which exhibits an order-of-magnitude increase in its superconducting transition ... -
Nanoscale Label-free Bioprobes to Detect Intracellular Proteins in Single Living Cells
(Nature Publishing Group, 2014)Fluorescent labeling techniques have been widely used in live cell studies; however, the labeling processes can be laborious and challenging for use in non-transfectable cells, and labels can interfere with protein functions. ... -
Nanoscale magnetic imaging of a single electron spin under ambient conditions
(Nature Publishing Group, 2013)The detection of ensembles of spins under ambient conditions has revolutionized the biological, chemical and physical sciences through magnetic resonance imaging1 and nuclear magnetic resonance2, 3. Pushing sensing ... -
Nanoscale Magnetic Imaging with a Single Nitrogen-Vacancy Center in Diamond
(2013-03-18)Magnetic imaging has been playing central roles not only in fundamental sciences but also in engineering and industry. Their numerous applications can be found in various areas, ranging from chemical analysis and biomedical ... -
Nanoscale Magnetic Materials for Energy-Efficient Spin Based Transistors
(2015-05-01)In this dissertation, I study the physical behavior of nanoscale magnetic materials and build spin-based transistors that encode information in magnetic domain walls. It can be argued that energy dissipation is the most ... -
Nanoscale Magnetic Resonance Imaging and Magnetic Sensing Using Atomic Defects in Diamond
(2014-06-06)Magnetic resonance imaging (MRI) has revolutionized modern medicine by providing non-invasive, chemically selective, three-dimensional imaging of living organisms. Industrial-scale MRI has the capability to image with ... -
Nanoscale Magnetic Resonance Spectroscopy Using Individual Spin Qubits
(2017-05-11)Nuclear magnetic resonance (NMR) and electron paramagnetic resonance (EPR) are essential tools for both the physical and life sciences, but have been limited to the detection of large ensembles of spins due to their low ... -
Nanoscale Magnetometry with Single Spin Qubits in Diamond
(2021-11-16)Many types of magnetic sensing, such as nuclear magnetic resonance (NMR) spectroscopy, electron paramagnetic resonance (EPR) spectroscopy, and magnetic susceptibility measurements, are important tools for understanding the ... -
Nanoscale Morphology Control Using Ion Beams
(Det Kongelige Danske Videnskabernes Selskab, 2006)Ion irradiation of a solid surface can be used to control surface morphology on length scales from 1 micron to 1 nanometer. Focused or unfocused ion irradiation induces a spontaneous self-organization of the surface ... -
Nanoscale NMR spectroscopy and imaging of multiple nuclear species
(Nature Publishing Group, 2015)Nuclear magnetic resonance (NMR) spectroscopy and magnetic resonance imaging (MRI) provide non-invasive information about multiple nuclear species in bulk matter, with wide-ranging applications from basic physics and ... -
Nanoscale Organization and Optical Observation of Biomolecules With DNA Nanotechnology
(2016-05-19)Understanding biomolecular information at the single-molecule level requires tools for manipulating and observing individual biomolecules at the nanoscale. Programmable DNA nanotechnology provides an ideal interface to ... -
Nanoscale Pattern Self-Organization Under Ion Bombardment
(2017-05-12)Surfaces spontaneously self-organize under ion bombardment into a range of morphologies, including ripples, nanodots, ultrasmoothness, and high-amplitude structures. In this dissertation, I present research into the causes ... -
Nanoscale Sensing With Individual Nitrogen-Vacancy Centers in Diamond
(2015-04-07)Nitrogen-vacancy (NV) centers in diamond have recently emerged as a promising new system for quantum information and nanoscale sensing applications. They have long coherence times at room temperature and can be positioned ... -
Nanoscale spin-polarized imaging of magnetic Weyl semimetal CeBi
(2023-11-21)Weyl fermions are massless excitations with definite chirality. They manifest around band-touching points in the bulk band structure when inversion or time-reversal symmetry is broken. Among Weyl semimetals, those breaking ... -
Nanoscale Surface Element Identification and Dopant Homogeneity in the High-\(T_c\) Superconductor \(Pr_xC_{1-x}Fe_2As_2\)
(American Physical Society, 2013)We use scanning tunneling microscopy to determine the surface structure and dopant distribution in \(Pr_xCa_{1-x}Fe_2As_2\), the highest-\(T_c\) member of the 122 family of iron-based superconductors. We identify the cleaved ... -
Nanoscale surface element identification and dopant homogeneity in the high-\(T_{c}\) superconductor \(Pr_xCa_{1−x}Fe_2As_2\)
(American Physical Society (APS), 2013)We use scanning tunneling microscopy to determine the surface structure and dopant distribution in \(Pr_xCa_{1−x}Fe_2As_2\), the highest-Tc member of the 122 family of iron-based superconductors. We identify the cleaved ... -
Nanoscale surface element identification and dopant homogeneity in the high-Tc superconductor PrxCa1−xFe2As2
(American Physical Society (APS), 2013)We use scanning tunneling microscopy to determine the surface structure and dopant distribution in PrxCa1−xFe2As2, the highest-Tc member of the 122 family of iron-based superconductors. We identify the cleaved surface ...