Hybrid nanoarchitectured core shell plasmonic structures with tunable optical properties

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

Abstract

Interest in patterned polymer-based flexible nanodevices and sub-100 nm metal and transparent conducting nanostructured electrodes have led us to modify the traditional nanoimprint lithography technique to enable fabrication of an array of sub-100 nm diameter electrode structures. Transparent conducting electrodes (TCOs) are fabricated by coating one or multiple TCO layers of choice on top of a polymer nanostructured scaffold of appropriate dimension. By optimizing the thickness of each of these layers one may tune and optimize the trade-off between the conductivity and transparency of the sample. Incorporation of plasmonic materials such as Ag leads to interplay of localized and tunable surface plasmon resonances within the TCO structures. At plasmon resonance the reflection of the sample is minimized and absorption in the TCO structures dominates. Experimental and simulated reflection spectra of these structures are in good agreement, including the appearance of sharp spectral features that are absent in a simple planar analog. The simulated Brewster angle of the nanopillars decreases compared to the planar reference sample by up to 10-13 degrees depending on the height of the pillars and indicates a reduced effective refractive index. The depolarization factor obtained by ellipsometry is about 0.05, as anticipated for ellipsoidal pillars.

Original languageEnglish (US)
Title of host publicationMaterials Research Society Symposium Proceedings
PublisherMaterials Research Society
Volume1627
DOIs
StatePublished - 2014
Event2013 MRS Fall Meeting - Boston, MA, United States
Duration: Dec 1 2013Dec 6 2013

Other

Other2013 MRS Fall Meeting
CountryUnited States
CityBoston, MA
Period12/1/1312/6/13

Fingerprint

Optical properties
optical properties
Electrodes
electrodes
conduction
Polymers
Nanoimprint lithography
Brewster angle
Ellipsometry
Depolarization
polymers
Surface plasmon resonance
surface plasmon resonance
Scaffolds
depolarization
Transparency
ellipsometry
Refractive index
lithography
Metals

Keywords

  • lithography (deposition)
  • nanostructure
  • transparent conductor

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering
  • Mechanics of Materials

Cite this

Khosroabadi, A. A., Gangopadhyay, P., & Norwood, R. A. (2014). Hybrid nanoarchitectured core shell plasmonic structures with tunable optical properties. In Materials Research Society Symposium Proceedings (Vol. 1627). Materials Research Society. https://doi.org/10.1557/opl.2014.251

Hybrid nanoarchitectured core shell plasmonic structures with tunable optical properties. / Khosroabadi, A. A.; Gangopadhyay, Palash; Norwood, Robert A.

Materials Research Society Symposium Proceedings. Vol. 1627 Materials Research Society, 2014.

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

Khosroabadi, AA, Gangopadhyay, P & Norwood, RA 2014, Hybrid nanoarchitectured core shell plasmonic structures with tunable optical properties. in Materials Research Society Symposium Proceedings. vol. 1627, Materials Research Society, 2013 MRS Fall Meeting, Boston, MA, United States, 12/1/13. https://doi.org/10.1557/opl.2014.251
Khosroabadi AA, Gangopadhyay P, Norwood RA. Hybrid nanoarchitectured core shell plasmonic structures with tunable optical properties. In Materials Research Society Symposium Proceedings. Vol. 1627. Materials Research Society. 2014 https://doi.org/10.1557/opl.2014.251
Khosroabadi, A. A. ; Gangopadhyay, Palash ; Norwood, Robert A. / Hybrid nanoarchitectured core shell plasmonic structures with tunable optical properties. Materials Research Society Symposium Proceedings. Vol. 1627 Materials Research Society, 2014.
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