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Articles 1 - 3 of 3
Full-Text Articles in Engineering
Terahertz Radiation From Electrically Driven Graphene, Single Walled Carbon Nanotubes, And Platinum Nanostructures, Martin M. Muthee
Terahertz Radiation From Electrically Driven Graphene, Single Walled Carbon Nanotubes, And Platinum Nanostructures, Martin M. Muthee
Doctoral Dissertations
Terahertz power generation continues to be a subject of great interest owing mainly to the sparsity and diversity of sources. Though there has been remarkable development in sources, ranging from quantum cascade lasers, time domain spectroscopy systems and multiplier sources, there still exists hurdles when it comes to integration and application. While some sources excel in a particular attribute like power, they are severely limited when it comes to on-chip or system integration, for example. Furthermore, tunable bandwidth and power are inversely related. Electrically driven radiation sources are emergent and this thesis presents work in terahertz generation from arrays of …
Study Of The Self-Assembly Process Of Microporous Materials Using Molecular Modeling, Mohammad Navaid Khan
Study Of The Self-Assembly Process Of Microporous Materials Using Molecular Modeling, Mohammad Navaid Khan
Doctoral Dissertations
Zeolites are an important class of materials in modern technology with applications in catalysis, separations, biosensing and microelectronics. There are over 200 different zeolite frameworks reported in literature, but only a handful have been used commercially. Understanding their self-assembly process would assist in the fabrication of new zeolites through the control of their pore size/shape, and surface area for advanced applications. With our research we aim to elucidate aspects of zeolite formation using molecular simulations. We have extended the lattice model of silica tetrahedra developed by Jin et al. [L. Jin, S. M. Auerbach and P. A. Monson J. Chem. …
Refractive Index Engineering And Optical Properties Enhancement By Polymer Nanocomposites, Cheng Li
Refractive Index Engineering And Optical Properties Enhancement By Polymer Nanocomposites, Cheng Li
Doctoral Dissertations
The major part of this dissertation discusses the engineering of the refractive index of materials using solution-processable polymer nanocomposites and their applications in building optical components and devices. Three particular polymer nanocomposites have been introduced to achieve materials with tunable refractive indices and enhanced optical properties, which can be used to manipulate the behavior of light or electromagnetic radiations. In the first system, polyhedral oligomeric silsesquioxane (POSS)/polymer nanocomposites are developed. Thin films with tunable, low refractive indicies were fabricated from the composites. The mechanical strength of these films was characterized, and their application in antireflective coatings is discussed. In the …