What are Sculptured Thin Films?

Research output: Contribution to journalConference article

Abstract

Sculptured thin films (STFs) are nanoengineered materials with columnar morphology tailored to elicit desired optical responses upon excitation. The identical nanowires comprising a STF are oriented (nominally) parallel to each other, and possess two- and/or three-dimensional shapes. Two canonical forms of STFs have been formalized. Linear constitutive relations for general STFs as unidirectionally nonhomogeneous (continuously or piecewise uniformly) and locally bianisotropic continuums are presented, along with a 4×4 matrix ordinary differential equation for wave propagation therein. A nominal model for the macroscopic properties of linear STFs has been devised from using local homogenization. Several advanced as well as emerging applications of STFs are also discussed.

Original languageEnglish (US)
Pages (from-to)74-82
Number of pages9
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume5219
DOIs
StatePublished - Dec 1 2003
EventNanotubes and Nanowires - San Diego, CA, United States
Duration: Aug 3 2003Aug 4 2003

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Thin Films
Thin films
thin films
canonical forms
Matrix Differential Equation
Linear Relation
Constitutive Relations
Nanowires
Canonical form
homogenizing
Ordinary differential equations
Homogenization
Wave propagation
Wave Propagation
Categorical or nominal
wave propagation
emerging
Ordinary differential equation
Continuum
nanowires

All Science Journal Classification (ASJC) codes

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

Cite this

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title = "What are Sculptured Thin Films?",
abstract = "Sculptured thin films (STFs) are nanoengineered materials with columnar morphology tailored to elicit desired optical responses upon excitation. The identical nanowires comprising a STF are oriented (nominally) parallel to each other, and possess two- and/or three-dimensional shapes. Two canonical forms of STFs have been formalized. Linear constitutive relations for general STFs as unidirectionally nonhomogeneous (continuously or piecewise uniformly) and locally bianisotropic continuums are presented, along with a 4×4 matrix ordinary differential equation for wave propagation therein. A nominal model for the macroscopic properties of linear STFs has been devised from using local homogenization. Several advanced as well as emerging applications of STFs are also discussed.",
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What are Sculptured Thin Films? / Lakhtakia, Akhlesh.

In: Proceedings of SPIE - The International Society for Optical Engineering, Vol. 5219, 01.12.2003, p. 74-82.

Research output: Contribution to journalConference article

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