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Stress evolution during growth and atomic-scale surface structure effects in transition-metal thin films
(Massachusetts Institute of Technology, 2004)
Thin films are defined by an extremely high ratio of the in-plane dimensions to the thickness, resulting in very high surface-to-volume ratios. For this reason, the surface characteristics of a film play an important role ...
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 ...
Toward commercializable microphase-separating copolymer electrolytes for rechargeable lithium batteries
(Massachusetts Institute of Technology, 2003)
Microphase-separating copolymers have been shown to possess the electrical properties of a polymer liquid and the mechanical properties of a solid. In the past, these materials had to be produced via anionic methods that ...
Fast impurity diffusion in hcp Zr
(Massachusetts Institute of Technology, 1996)
Supramolecular NanoStamping (SuNS) : fabricating nano/bio devices using DNA as a movable type
(Massachusetts Institute of Technology, 2007)
When a useful device is developed, it always requires a mass-production technique to industrialize it. In the era of nano/biotechnology, the development of printing techniques has not followed the speed of the inventions ...
Adsorption and conformation change of short helical peptides on silica and aluminosilicate surfaces
(Massachusetts Institute of Technology, 2002)
Motivated by the challenges in understanding important features of protein adsorption, the interactions between (-helical peptides and a carefully selected set of model surfaces were studied. The peptide sequences contained ...
Energy absorption in Ni-Mn-Ga/ polymer composites
(Massachusetts Institute of Technology, 2006)
In recent years Ni-Mn-Ga has attracted considerable attention as a new kind of actuator material. Off-stoichiometric single crystals of Ni2MnGa can regularly exhibit 6% strain in tetragonal martensites and orthorhombic ...
Tunable micro-cavities in photonic band-gap yarns and optical fibers
(Massachusetts Institute of Technology, 2006)
The vision behind this work is the fabrication of high performance innovative fiber-based optical components over kilometer length-scales. The optical properties of these fibers derive from their multilayer dielectric ...
Advanced engineered substrates for the integration of lattice-mismatched materials with silicon
(Massachusetts Institute of Technology, 2006)
The dramatic advances in Si/SiO2-based microelectronic processing witnessed over the past several decades can largely be attributed to relatively material-independent device scaling. However, with physical and economic ...