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Description:: This dissertation describes investigations into the two primary mechanisms by which the optical bandgap of colloidal quantum dots (QDs) may be post-synthetically modified: (i) by the quantum-confined Stark effect and (ii) by exciton-delocalizing surface capping ligands. This work demonstrates that through the use of ligand-exchange strategies that enable either of...
Keyword:: Quantum dots, ligands, and interfaces
Subject:: Chemistry
Creator:: Westmoreland, Dana Emily
Owner:: Scholarly Digital Publishing
Language:: en
Date Uploaded:: 02/01/2021
Date Created:: 2020-01-01
Resource Type:: Dissertation
Alternate Identifier:: etdadmin_upload_748612 and http://dissertations.umi.com/northwestern:15158

Description:: As conventional electronic materials approach the device scaling limits, new types of materials and structures have been examined for potential use in future electronic and optoelectronic applications including transistors, light emitting diodes, and solar cells. In recent years, atomically thin or two-dimensional (2D) transition metal dichalcogenide (TMD) materials have emerged...
Keyword:: electron microscopy, heterostructures, electronic properties, grain boundaries, 2d materials, and interfaces
Subject:: Materials Science
Creator:: MURTHY, AKSHAY ARUN
Owner:: Scholarly Digital Publishing
Language:: en
Date Uploaded:: 01/21/2021
Date Created:: 2020-01-01
Resource Type:: Dissertation
Alternate Identifier:: etdadmin_upload_730816 and http://dissertations.umi.com/northwestern:15038

Description:: The nonlinear optical technique, second harmonic generation (SHG), is applied here for the first time to probe single and double strand DNA (ssDNA and dsDNA) chemically attached to fused quartz/water interfaces. DNA interfaces are often a critical functional component of biodetection, thus, the development of molecular biosensors requires a thorough...
Keyword:: biosensors, chirality, second harmonic generation, nonlinear optics, interfaces, and DNA
Subject:: Chemistry
Creator:: Faith Christianna Boman
Owner:: Scholarly Digital Publishing
Date Uploaded:: 10/08/2018
Date Modified:: 10/08/2018
Date Created:: 2008-12-09
Resource Type:: Dissertation

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