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| Title | Electronic and thermally tunable infrared metamaterial absorbers |
| Publication Type | Conference Paper |
| Year of Publication | 2016 |
| Authors | D Shrekenhamer, JA Miragliotta, M Brinkley, K Fan, F Peng, JA Montoya, S Gauza, ST Wu, and WJ Padilla |
| Conference Name | Proceedings of SPIE - The International Society for Optical Engineering |
| Date Published | 01/2016 |
| Abstract | In this paper, we report a computational and experimental study using tunable infrared (IR) metamaterial absorbers (MMAs) to demonstrate frequency tunable (7%) and amplitude modulation (61%) designs. The dynamic tuning of each structure was achieved through the addition of an active material - liquid crystals (LC) or vanadium dioxide (VO2) - within the unit cell of the MMA architecture. In both systems, an applied stimulus (electric field or temperature) induced a dielectric change in the active material and subsequent variation in the absorption and reflection properties of the MMA in the mid- to long-wavelength region of the IR (MWIR and LWIR, respectively). These changes were observed to be reversible for both systems and dynamic in the LC-based structure. |
| DOI | 10.1117/12.2238666 |