Search
Now showing items 1-10 of 56
Finite element solution of interface and free surface three-dimensional fluid flow problems using flow-condition-based interpolation
(Massachusetts Institute of Technology, 2015)
The necessity for a highly accurate simulation scheme of free surface flows is emphasized in various industrial and scientific applications. To obtain an accurate response prediction, mass conservation must be satisfied. ...
Harmonic poly-actuator : design and control of a new piezoelectric mechanism
(Massachusetts Institute of Technology, 2015)
Piezoelectric devices, e.g. piezoelectric stack actuators, have several salient features inherent to their structure. They are efficient, have a high bandwidth, and their capacitive loading allows for static loads to be ...
The effect of towed array orientation on the 3D acoustic picture for sound sources and the vertical ambient noise profile
(Massachusetts Institute of Technology, 2015)
The three dimensional (3D) acoustic arrival structure of the undersea ambient noise field is important for many reasons, and can give us significant insights into the Arctic environment. For example, the anthropomorphic ...
Design and manufacturing of all-dielectric optical metamaterial with gradient index of refraction
(Massachusetts Institute of Technology, 2015)
Gradient index (GRIN) materials offer the most general manipulation over wave fields of light compared to conventional refractive optics, where the light is deflected by the curved surface. The creative way to implementing ...
Electrical impact assessment of dislocations in silicon materials for solar cells
(Massachusetts Institute of Technology, 2015)
Cast multicrystalline silicon (mc-Si) makes up about 60% of the global photovoltaics market production, and is favored due to its lower areal and capex costs relative to monocrystalline silicon. This method, however, ...
Transport of phonons and electrons in thermoelectric materials and graphene
(Massachusetts Institute of Technology, 2015)
Understanding transport of phonons and electrons plays a critical role in developing energy conversion and information devices. Thermoelectric materials, which directly convert heat to electricity or vice versa, require ...
A reliable & autonomous robotic in-pipe leak detection system
(Massachusetts Institute of Technology, 2015)
Leaks are the major factor for unaccounted losses in every pipe network around the world (oil, gas or water). In most cases the deleterious effects associated with the occurrence of leaks may present serious economical and ...
Compositional engineering of solution-processed solar cells : aligning computational and experimental screening strategies
(Massachusetts Institute of Technology, 2015)
Unlike silicon, solution-processable solar materials are flexible, lightweight, easily processed at low temperatures, and display a wide variety of colors and degrees of transparency. These attributes open new opportunities ...
Nanomanufacturing of functional nanostructured surfaces for efficient light transport
(Massachusetts Institute of Technology, 2015)
Nanostructured surfaces have given rise to many unique optical properties, such as broadband anti-reflectivity, structural coloring effects, and enhanced light extraction from high refractive index materials due to their ...
Solid State MEMS Resonators in Silicon
(Massachusetts Institute of Technology, 2015)
Two of the greatest challenges in MEMS are those of packaging and integration with CMOS technology. Development of solid state RF MEMS resonators in silicon, resonators that do not require any release etch step, eliminates ...