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Title: Large Transient Optical Modulation of Epsilon-Near-Zero Colloidal Nanocrystals

Here, epsilon-near-zero materials may be synthesized as colloidal nanocrystals which display large magnitude subpicosecond switching of infrared localized surface plasmon resonances. Such nanocrystals offer a solution-processable, scalable source of tunable metamaterials compatible with arbitrary substrates. Under intraband excitation, these nanocrystals display a red-shift of the plasmon feature arising from the low electron heat capacities and conduction band nonparabolicity of the oxide. Under interband pumping, they show in an ultrafast blueshift of the plasmon resonance due to transient increases in the carrier density. Combined with their high-quality factor, large changes in relative transmittance (+86%) and index of refraction (+85%) at modest control fluences (<5 mJ/cm 2) suggest that these materials offer great promise for all-optical switching, wavefront engineering, and beam steering operating at terahertz switching frequencies.
Authors:
 [1] ;  [2] ;  [2] ;  [3]
  1. Argonne National Lab. (ANL), Lemont, IL (United States)
  2. Northwestern Univ., Evanston, IL (United States)
  3. Argonne National Lab. (ANL), Lemont, IL (United States); Northwestern Univ., Evanston, IL (United States)
Publication Date:
Grant/Contract Number:
AC02-06CH11357
Type:
Accepted Manuscript
Journal Name:
ACS Nano
Additional Journal Information:
Journal Volume: 10; Journal Issue: 11; Journal ID: ISSN 1936-0851
Publisher:
American Chemical Society (ACS)
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org:
Northwestern University, Materials Research Science and Engineering Center (NU-MRSEC); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Scientific User Facilities Division
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; indium tin oxide; metamaterials; doping; epsilon-near-zero; localized surface plasmon resonance; nanocrystals; ultrafast
OSTI Identifier:
1416152

Diroll, Benjamin T., Guo, Peijun, Chang, Robert P. H., and Schaller, Richard D.. Large Transient Optical Modulation of Epsilon-Near-Zero Colloidal Nanocrystals. United States: N. p., Web. doi:10.1021/acsnano.6b05116.
Diroll, Benjamin T., Guo, Peijun, Chang, Robert P. H., & Schaller, Richard D.. Large Transient Optical Modulation of Epsilon-Near-Zero Colloidal Nanocrystals. United States. doi:10.1021/acsnano.6b05116.
Diroll, Benjamin T., Guo, Peijun, Chang, Robert P. H., and Schaller, Richard D.. 2016. "Large Transient Optical Modulation of Epsilon-Near-Zero Colloidal Nanocrystals". United States. doi:10.1021/acsnano.6b05116. https://www.osti.gov/servlets/purl/1416152.
@article{osti_1416152,
title = {Large Transient Optical Modulation of Epsilon-Near-Zero Colloidal Nanocrystals},
author = {Diroll, Benjamin T. and Guo, Peijun and Chang, Robert P. H. and Schaller, Richard D.},
abstractNote = {Here, epsilon-near-zero materials may be synthesized as colloidal nanocrystals which display large magnitude subpicosecond switching of infrared localized surface plasmon resonances. Such nanocrystals offer a solution-processable, scalable source of tunable metamaterials compatible with arbitrary substrates. Under intraband excitation, these nanocrystals display a red-shift of the plasmon feature arising from the low electron heat capacities and conduction band nonparabolicity of the oxide. Under interband pumping, they show in an ultrafast blueshift of the plasmon resonance due to transient increases in the carrier density. Combined with their high-quality factor, large changes in relative transmittance (+86%) and index of refraction (+85%) at modest control fluences (<5 mJ/cm2) suggest that these materials offer great promise for all-optical switching, wavefront engineering, and beam steering operating at terahertz switching frequencies.},
doi = {10.1021/acsnano.6b05116},
journal = {ACS Nano},
number = 11,
volume = 10,
place = {United States},
year = {2016},
month = {10}
}