Design of micro- and macro-scale polymeric metamaterial solutions for passive and active thermal camouflaging applications

• Author(s) / Creator(s)

  • Pisavadia, Harshil
  • Asad, Asad
  • Sameoto, Dan
  • Dolez, Patricia
  • Hogan, James D.

• This work utilizes predictive modeling techniques to guide and inform metamaterial design for heat management solutions and thermal radiation control. Specifically, micro- and macro-scale polyethylene-based solutions are proposed for passive and active thermal camouflage. A micro-scale post design is proposed for highly-tunable infrared emissivity based on varying unit cell geometrical configurations. Actively modulating these micro-features through lateral straining of up to 3% allows for redshifting the emissivity spectrum by up to 0.5 µm. Macroscale lenticular lens designs allow for a more passive form of camouflage due to its emissive stability for a range of configurations (e.g., single and sandwiched structures, increasing lens radii and height). Overall, the proposed metamaterial designs allow the tailoring of optical properties to improve thermal radiating performance.

• Date created

  2023-04-01

• Subjects / Keywords

  • Infrared emissivity
  • Infrared technology
  • Multifunctional metamaterials
  • Multiphysics modeling
  • Thermal camoflage

• Type of Item

  Article (Published)

• DOI

  https://doi.org/10.7939/r3-7jx2-8v15

• License

  Attribution 4.0 International