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Articles 1 - 6 of 6
Full-Text Articles in Nanoscience and Nanotechnology
Measurement And Analysis Of Iii-V & Ii-Vi Infrared Detectors: Radiometric, Noise Spectrum, And Radiation Tolerance Performance, Vincent M. Cowan
Measurement And Analysis Of Iii-V & Ii-Vi Infrared Detectors: Radiometric, Noise Spectrum, And Radiation Tolerance Performance, Vincent M. Cowan
Nanoscience and Microsystems ETDs
Infrared (IR) hybrid detector arrays and discrete detectors operated in the space environment may be subjected to a variety of sources of natural radiation while in orbit. This means IR detectors intended for applications such as space-based intelligence, surveillance, and reconnaissance (ISR) or space-situational awareness (SSA) must not only have high performance (high quantum efficiency, h and low dark-current density, JD, and preferably minimal 1/f noise content), but also their radiation tolerance or ability to withstand the effects of the radiation they would expect to encounter in space must be characterized and well understood. As the effects of …
Applied Photoproperties Of Phenylene Ethynylenes, Patrick L. Donabedian
Applied Photoproperties Of Phenylene Ethynylenes, Patrick L. Donabedian
Nanoscience and Microsystems ETDs
Light-absorbing molecules can be used as powerful tools to perturb and understand biological systems by fluorescence, sensitization, or photochemical reactions. A thorough understanding of the delivery of dyes to specific biochemical targets and the processes that control the fate of excited-state energy is needed to engineer useful technology out of organic photochemistry. This thesis presents four projects investigating different aspects of pathogen destruction and biochemical sensing in a variety of systems, using the properties of p-phenylene ethynylenes (PEs), an especially flexible and well-studied class of conjugated molecules. Of particular relevance, some PEs are found to be effective dyes for amyloid …
The Effect Of Relative Electrode Size On The Performance Of A Supercapacitive Microbial Fuel Cell Design, Jeremiah Houghton
The Effect Of Relative Electrode Size On The Performance Of A Supercapacitive Microbial Fuel Cell Design, Jeremiah Houghton
Nanoscience and Microsystems ETDs
Supercapacitive microbial fuel cells with various anode and cathode dimensions were investigated in order to determine the effect on capacitance and delivered power quality. The cathode size was determined to be the limiting component of the system, while anode size showed little effect on the devices performance. By doubling the cathode area, peak power output was improved by roughly 120% for a 10 ms pulse discharge. Doubling the cathode area also had a positive effect on the internal resistance of the cell, lowering the equivalent series resistance by approximately 47%. Doubling the anode area increased peak power output slightly, with …
Bio-Nano Interfaces: Enzyme Immobilization For Biomimetic Energy Harvesting, Rachel Hjelm
Bio-Nano Interfaces: Enzyme Immobilization For Biomimetic Energy Harvesting, Rachel Hjelm
Nanoscience and Microsystems ETDs
In the face of todays rapidly growing energy demands accompanied by limited, non-renewable supplies, development of novel energy alternatives that are both renewable and inexpensive has become more important than ever. Development of 3D structures exploring the properties of nano-materials and biological molecules has been shown through the years as an effective path forward for the design of advanced bio-nano architectures for enzymatic fuel cells (EFCs). Despite advantages over conventional fuel cells, EFCs still suffer from several problems including low efficiency and stability. Overcoming these limitations in order to make them more viable for real world application is an ongoing …
Visualizing Mast Cell Activation: Single Molecule Dynamics Of Early Events In Fceri Signaling, Samantha Schwartz
Visualizing Mast Cell Activation: Single Molecule Dynamics Of Early Events In Fceri Signaling, Samantha Schwartz
Nanoscience and Microsystems ETDs
Healthy immune cell behavior requires sensitive and robust control over the processes that regulate signal transduction. In this work we employ single molecule fluorescence imaging techniques to quantify adapter protein recruitment, lateral mobility, receptor aggregation, and cytoskeletal organization to create a better understanding of many key processes in immune cell regulation. We focus on understanding the initiating events in FceRI signaling in mast cells. Mast cell signaling encompassing a wide array of cellular outcomes including calcium flux, release of pre-formed inflammatory mediators and the production of cytokines. Careful control over appropriate reactions to external antigens is necessary for mast cells …
Electrodeposition Of High Magnetostrictive Cobalt Iron Alloy Films For Smart Tags And Sensor Applications, Jamin Pillars
Electrodeposition Of High Magnetostrictive Cobalt Iron Alloy Films For Smart Tags And Sensor Applications, Jamin Pillars
Nanoscience and Microsystems ETDs
Magnetostrictive CoFe films were investigated for use as magnetoelastic tags or sensors. The ability to electrodeposit these films enables batch fabrication processes to pattern a variety of geometries while controlling the film stoichiometry and crystallography. In current research looking at CoFe, improved magnetostriction was achieved using a co-sputtering, annealing, and quenching method1. Other current research has reported electrodeposited CoFe films using a sulfate based chemistry resulting in film compositions that are Fe rich in the range of Co0.3-0.4Fe0.7-0.6 and have problems of co-deposition of undesirables that can have a negative impact on magnetic properties2, 3. The research presented here focused …