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

Ricardo A. Fiallo, Mark W. Horn, Akhlesh Lakhtakia

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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.

Original languageEnglish (US)
Title of host publicationInternational Workshop on Thin Films for Electronics, Electro-Optics, Energy and Sensors 2022
EditorsGuru Subramanyam, Partha Banerjee, Akhlesh Lakhtakia, Nian X. Sun
PublisherSPIE
ISBN (Electronic)9781510660618
DOIs
StatePublished - 2023
EventInternational Workshop on Thin Films for Electronics, Electro-Optics, Energy and Sensors 2022 - Boston, United States
Duration: Aug 10 2022Aug 12 2022

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume12477
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceInternational Workshop on Thin Films for Electronics, Electro-Optics, Energy and Sensors 2022
Country/TerritoryUnited States
CityBoston
Period8/10/228/12/22

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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