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Nanoscience and Nanotechnology Commons

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Nanowires

Materials Science and Engineering

University of Colorado, Boulder

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Full-Text Articles in Nanoscience and Nanotechnology

Magnetic And Optical Holonomic Manipulation Of Colloids, Structures And Topological Defects In Liquid Crystals For Characterization Of Mesoscale Self-Assembly And Dynamics, Michael Christopher Mason Varney Jan 2014

Magnetic And Optical Holonomic Manipulation Of Colloids, Structures And Topological Defects In Liquid Crystals For Characterization Of Mesoscale Self-Assembly And Dynamics, Michael Christopher Mason Varney

Physics Graduate Theses & Dissertations

Colloidal systems find important applications ranging from fabrication of photonic crystals to direct probing of phenomena encountered in atomic crystals and glasses; topics of great interest for physicists exploring a broad range of scientific, industrial and biomedical fields. The ability to accurately control particles of mesoscale size in various liquid host media is usually accomplished through optical trapping methods, which suffer limitations intrinsic to trap laser intensity and force generation. Other limitations are due to colloid properties, such as optical absorptivity, and host properties, such as viscosity, opacity and structure. Therefore, alternative and/or novel methods of colloidal manipulation are ...


Growth And Characterization Of Gallium Nitride Nanowire Leds For Application As On-Chip Optical Interconnects, Matt Brubaker Jan 2012

Growth And Characterization Of Gallium Nitride Nanowire Leds For Application As On-Chip Optical Interconnects, Matt Brubaker

Mechanical Engineering Graduate Theses & Dissertations

Gallium nitride (GaN) nanowires have potential as nanoscale optoelectronic building blocks that can be functionally integrated with silicon MEMS and IC devices. This dissertation presents an overview of the synthesis, characterization, and application of GaN nanowire light-emitting-diodes (LEDs) grown by plasma-assisted molecular beam epitaxy (MBE). Specifically, this research demonstrates discrete axial p-n junction nanowires that produce ultra-violet (UV) electroluminescence at ~40 nW optical power. It further demonstrates that a two-nanowire optical interconnect device can be fabricated from axial p-n junction nanowires with light-emitting and photoconductive capabilities. The nanowire structures obtained from MBE growth were found to depend sensitively on the ...