Now showing items 1-11 of 11

• #### Compositional Tuning of Ultrathin Surface Oxides on Metal and Alloy Substrates Using Photons: Dynamic Simulations and Experiments ﻿

(American Physical Society, 2010)
We report on the ability to modify the structure and composition of ultrathin oxides grown on Ni and Ni-Al alloy surfaces at room temperature utilizing photon illumination. We find that the nickel-oxide formation is enhanced ...
• #### Correlated Oxides: Material Physics and Devices ﻿

(2015-05-15)
In this work we study the metal-insulator transition in vanadium dioxide and samarium nickelate and the application of such transitions in electronic devices. Chapter 1 provides an introduction to the Mott metal-insulator ...
• #### Dynamic control of light emission faster than the lifetime limit using VO2 phase-change ﻿

(Nature Pub. Group, 2015)
Modulation is a cornerstone of optical communication, and as such, governs the overall speed of data transmission. Currently, the two main strategies for modulating light are direct modulation of the excited emitter ...
• #### High-Current-Density Monolayer CdSe/ZnS Quantum Dot Light-Emitting Devices with Oxide Electrodes ﻿

(Wiley-Blackwell, 2011)
• #### Nanoscale Imaging and Control of Resistance Switching in VO[sub]2 at Room Temperature ﻿

(American Institute of Physics, 2010)
We demonstrate controlled local phase switching of a VO[sub]2 film using a biased conducting atomic force microscope tip. After application of an initial, higher ‘training’ voltage, the resistance transition is hysteretic ...
• #### Narrow Band Defect Luminescence from AI-doped ZnO Probed by Scanning Tunneling Cathodoluminescence ﻿

(American Institute of Physics, 2011)
We present an investigation of optically active near-surface defects in sputtered Al-doped ZnO films using scanning tunneling microscope cathodoluminescence (STM-CL). STM-CL maps suggest that the optically active sites are ...
• #### Studies on Synthesis, Structural and Electrical Properties of Complex Oxide Thin Films: Ba1-xSrxTiO3 and La2-xSrxNiO4 ﻿

(2012-07-27)
High performance miniaturized passives are of great importance for advanced nanoelectronic packages for several applications including efficient power delivery. Low cost thin film capacitors fabricated directly on package ...
• #### Synthesis and Variable Temperature Electrical Conductivity Studies of Highly Ordered TiO2 Nanotubes ﻿

(Springer Verlag, 2009)
Rafts of aligned, high aspect ratio TiO<sub>2</sub> nanotubes were fabricated by an electrochemical anodization method and their axial electrical conductivities were determined over the temperature range 225-400 °C. Length, ...
• #### Synthesis of Vanadium Dioxide Thin Films on Conducting Oxides and Metal–Insulator Transition Characteristics ﻿

(Elsevier, 2012)
We report on growth and physical properties of vanadium dioxide $(VO_2)$ films on model conducting oxide underlayers (Nb-doped $SrTiO_3$ and $RuO_2$ buffered $TiO_2$ single crystals). The $VO_2$ films, synthesized ...
• #### Thin Film Complex Oxide Proton Conductors: Synthesis and Applications ﻿

(2016-05-17)
The performance of ultra-thin film solid oxide fuel cells (μ-SOFC) is highly dependent on the structural, microstructural and transport properties of the electrolyte. The focus of this thesis is on understanding the effect ...
• #### Ultra-thin solid oxide fuel cells: materials and devices ﻿

(2014-06-06)
Solid oxide fuel cells are electrochemical energy conversion devices utilizing solid electrolytes transporting O2- that typically operate in the 800 - 1000 °C temperature range due to the large activation barrier for ionic ...