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Templated self-assembly of nanoporous alumina : pore formation and ordering mechanisms, methodologies, and applications
(Massachusetts Institute of Technology, 2005)
Porous anodic aluminum oxide (AAO), also known as porous alumina, is a self-ordered nanostructured material well-suited for use in electronic, magnetic, optical and biological applications due to its small pore size (4-200nm) ...
Scanning probe microscopy with inherent disturbance suppression using micromechanical systems
(Massachusetts Institute of Technology, 2005)
All scanning probe microscopes (SPMs) are affected by disturbances, or mechanical noise, in their environments which can limit their imaging resolution. This thesis introduces a general approach for suppressing out-of-plane ...
Thermodynamic stability and implications of anisotropic boundary particles
(Massachusetts Institute of Technology, 2005)
(cont.) Generally, a boundary is nonplanar in the neighborhood of an attached particle--even when anisotropic interfacial free energies do not produce faceting-and maintains a icKy = 0 while the boundary particles maintain ...
Langasite bulk acoustic wave resonant sensor for high temperature applications
(Massachusetts Institute of Technology, 2005)
(cont.) The self consistent defect model established the defect chemistry of langasite, enabling important parameters describing reduction (Er = 5.70± -0.06eV and 6.57±-0.24eV for acceptor and donor doped langasite ...
Accurate nanofabrication techniques for high-index-contrast microphotonic devices
(Massachusetts Institute of Technology, 2005)
High-refractive-index-contrast microphotonic devices provide strong light confinement allowing for sharp waveguide bends and small dielectric optical resonators. They allow dense optical integration and unique applications ...
Crystallographically consistent percolation theory for grain boundary networks
(Massachusetts Institute of Technology, 2005)
Grain boundaries are known to play a role in many important material properties including creep resistance, ductility and cracking resistance. Although the structure and properties of individual boundaries are important, ...
Engineered substrates for coplanar integration of lattice-mismatched semiconductors with silicon
(Massachusetts Institute of Technology, 2005)
As we approach the end of traditional CMOS scaling, further improvements in integrated circuit performance and functionality will become limited by the inherently low carrier mobility and indirect bandgap of silicon. These ...
2D and 3D periodic templates through holographic interference lithography : photonic and phononic crystals and biomimetic microlens arrays
(Massachusetts Institute of Technology, 2005)
In this thesis a simple technique for controlling structure via holographic interference lithography was established and implemented. Access to various space groups including such important structures as the level set ...
Deformation induced molecular behavior of Cis 1,4-polyisoprene and its nanocomposites monitored by solid-state NMR
(Massachusetts Institute of Technology, 2005)
Proton spin lattice (T1) relaxation time constants were used to monitor changes in the molecular motion and architecture of polyisoprene, polyisoprene-clay composites and polyhedral oligomeric silsesquioxane (POSS) ...
Gradient-Index (GRIN) lenses by Slurry-based Three-Dimensional Printing (S-3DP)
(Massachusetts Institute of Technology, 2005)
GRIN lenses with vertical index variation and radial index variation have been successfully fabricated using S-3DPTM. Two silica-based material systems, A1203-SiO₂ and BaO-SiO₂, have been studied and used for the fabrication ...