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Full-Text Articles in Physical Sciences and Mathematics
Solar Cell Design Using Metamaterials, Yang Liu, Yitung Chen, Jichun Li
Solar Cell Design Using Metamaterials, Yang Liu, Yitung Chen, Jichun Li
College of Engineering: Graduate Celebration Programs
Natural structure with simultaneous negative permittivity and permeability has not been discovered yet. However, using specially-designed metal embedded in dielectric bodies can achieve a kind of artificial negative index. This periodic structure which is smaller than the guided wavelength is known as a metamaterial. However, recent designs of metamaterials have some disadvantages when they are used in the application of solar cell. The perfect absorption is only within a narrow band, and for most of the solar spectrum, the absorption is no more than 10%. Here, a new kind of absorber for the solar spectrum has been designed and analyzed, …
Applied Analysis Of Ionic Polymer Metal-Composite Actuators, Siul Ruiz, Benjamin Mead, Woosoon Yim
Applied Analysis Of Ionic Polymer Metal-Composite Actuators, Siul Ruiz, Benjamin Mead, Woosoon Yim
College of Engineering: Graduate Celebration Programs
- IPMC is a type of smart material called an electroactive polymer
- Consists of an ionic polymer such as Nafion or Flemion and a conducive metal such as platinum or gold
- COMSOL multi-physics simulations accurately model the experimental displacement results
- Optimization performed using the multi-physics model to find the maximum deflection, force, and twisting
- Using the closed loop control system accurate IPMC tip location can be achieved
- This control system has been extended to function using a computer mouse as an input