Liquid Metal-Based Flexible Band-Stop Frequency Selective Surface
- Resource Type
- Conference
- Authors
- Mitra, Arkadeep; Xu, Kevin; Babu, Sachin; Choi, Jun H.; Lee, Jeong-Bong
- Source
- 2021 IEEE 34th International Conference on Micro Electro Mechanical Systems (MEMS) Micro Electro Mechanical Systems (MEMS), 2021 IEEE 34th International Conference on. :953-956 Jan, 2021
- Subject
- Bioengineering
Components, Circuits, Devices and Systems
Fields, Waves and Electromagnetics
Photonics and Electrooptics
Power, Energy and Industry Applications
Frequency selective surfaces
Liquids
Metals
Cryogenics
Frequency measurement
Tuning
Microfluidics
PDMS
liquid metal
band-stop
flexible
frequency selective surface
- Language
- ISSN
- 2160-1968
We report the design, fabrication, and characterization of PDMS encapsulated physically flexible (bendable, foldable) gallium-based liquid metal band-stop frequency selective surface. A band-stop frequency selective surface (FSS) with targeted operation in the X-band (7~11.2 GHz) was designed. Liquid metal was embedded in PDMS microfluidic channels replicated from a deep etched Si mold. Ultra-low pressure (5.75 x 10 -6 Torr) vacuum at cryogenic temperatures (10 K) was employed for clean encapsulation of liquid metal. An array of 5 x 5 FSS has been fabricated. Characterization of the fabricated FSS was carried out in a waveguide environment. The S-parameter values of the simulated and measured band-stop FSS response showed an excellent agreement.