Architecting the Columnar Morphology of Sculptured Thin Films for Polarization-Universal Bandgaps

Columnar thin films are assemblies of parallel straight columns of nanoscale cross-sectional dimensions grown by physical vapor deposition on appropriate substrates. Sculptured thin films are similar, but the columnar shape is architected for specific objectives. Polarization-universal bandgaps with maximum transmittance under 20% were realized as sculptured thin films of two different types: (i) tightly interlaced matched ambidextrous bilayers (TIMABs) to modify the circular Bragg phenomenon and (ii) equichiral sculptured thin films (ECSTFs) that display the Bragg phenomenon. The serial bideposition technique was employed for architecting the columns. Samples characterized optically as well as with scanning electron microscopy.

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Work Title Architecting the Columnar Morphology of Sculptured Thin Films for Polarization-Universal Bandgaps
Access
Open Access
Creators
  1. Ricardo A. Fiallo
  2. Mark W. Horn
  3. Akhlesh Lakhtakia
Keyword
  1. Bragg phenomenon
  2. Circular Bragg phenomenon
  3. Columnar morphology
  4. Physical vapor deposition
  5. Polarization state
  6. Sculptured thin film
  7. Structural chirality
License In Copyright (Rights Reserved)
Work Type Conference Proceeding
Publisher
  1. Proceedings Volume 12477, International Workshop on Thin Films for Electronics, Electro-Optics, Energy and Sensors 2022
Publication Date January 31, 2023
Publisher Identifier (DOI)
  1. https://doi.org/10.1117/12.2646145
Source
  1. Event: International Workshop on Thin Films for Electronics, Electro-Optics, Energy and Sensors, 2022, Boston, Massachusetts, United States
Deposited July 24, 2023

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Work History

Version 1
published

  • Created
  • Added Fiallo_22_3v8.pdf
  • Added Creator Ricardo A. Fiallo
  • Added Creator Mark W. Horn
  • Added Creator Akhlesh Lakhtakia
  • Published
  • Updated Source, Keyword, Publisher, and 1 more Show Changes
    Source
    • Event: International Workshop on Thin Films for Electronics, Electro-Optics, Energy and Sensors, 2022, Boston, Massachusetts, United States
    Keyword
    • Bragg phenomenon, Circular Bragg phenomenon, Columnar morphology, Physical vapor deposition, Polarization state, Sculptured thin film, Structural chirality
    Publisher
    • Proceedings of SPIE
    • Proceedings Volume 12477, International Workshop on Thin Films for Electronics, Electro-Optics, Energy and Sensors 2022
    Publication Date
    • 2023-01-01
    • 2023-01-31
  • Updated