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Title: Plasmon-Tunable Tip Pyramids: Monopole Nanoantennas for Near-Field Scanning Optical Microscopy

Squeezing optical fields into nanometer scale is the key step to perform spatially resolved near-field optics. In scattering-type near-field optical microscopy, this task is accomplished by nanoantennas that convert propagating radiation to local near-fields and vice versa. The usual nanoantenna is composed by an elongated metal structure whose longitudinal dimension is scaled to support dipole modes of localized surface plasmon resonances. However, monopole modes can also be explored if the elongated metal nanoparticle is electrically grounded on a flat metallic plateau that acts like a mirror providing the monopole's image that closes the dipole system. Here, a method for batch production of monopole nanoantennas for scattering-type near-field scanning optical microscopy is presented. The nanoantennas are composed of a micropyramidal body with a nanopyramidal end whose lateral dimension can be scaled to fine-tune localized surface plasmon resonance modes. In conclusion, the monopole character of the nanoantennas is revealed by electron energy loss spectroscopy, and their efficiency and reproducibility are tested in tip-enhanced Raman spectroscopy experiments performed on single-layer graphene and single-walled carbon nanotubes.
Authors:
 [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [2] ;  [3] ;  [3] ;  [4] ;  [1] ;  [3] ;  [3]
  1. Instituto Nacional de Metrologia, Duque de Caxias, RJ (Brazil)
  2. Instituto Nacional de Metrologia, Duque de Caxias, RJ (Brazil); Univ. Federal do Rio de Janeiro, Rio de Janeiro, RJ (Brazil)
  3. Univ. Federal de Minas Gerais, Belo Horizonte, MG (Brazil)
  4. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Publication Date:
Grant/Contract Number:
AC02-05CH11231
Type:
Accepted Manuscript
Journal Name:
Advanced Optical Materials
Additional Journal Information:
Related Information: © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim; Journal ID: ISSN 2195-1071
Publisher:
Wiley
Research Org:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Scientific User Facilities Division
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; electron energy loss spectroscopy; localized surface plasmon resonance; monopole nanoantennas; scanning near‐field optical microscopy; tip-enhanced Raman Spectroscopy
OSTI Identifier:
1476588
Alternate Identifier(s):
OSTI ID: 1463747

Vasconcelos, Thiago L., Archanjo, Bráulio S., Oliveira, Bruno S., Valaski, Rogério, Cordeiro, Rafael C., Medeiros, Helton G., Rabelo, Cassiano, Ribeiro, Aroldo, Ercius, Peter, Achete, Carlos A., Jorio, Ado, and Cançado, Luiz Gustavo. Plasmon-Tunable Tip Pyramids: Monopole Nanoantennas for Near-Field Scanning Optical Microscopy. United States: N. p., Web. doi:10.1002/adom.201800528.
Vasconcelos, Thiago L., Archanjo, Bráulio S., Oliveira, Bruno S., Valaski, Rogério, Cordeiro, Rafael C., Medeiros, Helton G., Rabelo, Cassiano, Ribeiro, Aroldo, Ercius, Peter, Achete, Carlos A., Jorio, Ado, & Cançado, Luiz Gustavo. Plasmon-Tunable Tip Pyramids: Monopole Nanoantennas for Near-Field Scanning Optical Microscopy. United States. doi:10.1002/adom.201800528.
Vasconcelos, Thiago L., Archanjo, Bráulio S., Oliveira, Bruno S., Valaski, Rogério, Cordeiro, Rafael C., Medeiros, Helton G., Rabelo, Cassiano, Ribeiro, Aroldo, Ercius, Peter, Achete, Carlos A., Jorio, Ado, and Cançado, Luiz Gustavo. 2018. "Plasmon-Tunable Tip Pyramids: Monopole Nanoantennas for Near-Field Scanning Optical Microscopy". United States. doi:10.1002/adom.201800528.
@article{osti_1476588,
title = {Plasmon-Tunable Tip Pyramids: Monopole Nanoantennas for Near-Field Scanning Optical Microscopy},
author = {Vasconcelos, Thiago L. and Archanjo, Bráulio S. and Oliveira, Bruno S. and Valaski, Rogério and Cordeiro, Rafael C. and Medeiros, Helton G. and Rabelo, Cassiano and Ribeiro, Aroldo and Ercius, Peter and Achete, Carlos A. and Jorio, Ado and Cançado, Luiz Gustavo},
abstractNote = {Squeezing optical fields into nanometer scale is the key step to perform spatially resolved near-field optics. In scattering-type near-field optical microscopy, this task is accomplished by nanoantennas that convert propagating radiation to local near-fields and vice versa. The usual nanoantenna is composed by an elongated metal structure whose longitudinal dimension is scaled to support dipole modes of localized surface plasmon resonances. However, monopole modes can also be explored if the elongated metal nanoparticle is electrically grounded on a flat metallic plateau that acts like a mirror providing the monopole's image that closes the dipole system. Here, a method for batch production of monopole nanoantennas for scattering-type near-field scanning optical microscopy is presented. The nanoantennas are composed of a micropyramidal body with a nanopyramidal end whose lateral dimension can be scaled to fine-tune localized surface plasmon resonance modes. In conclusion, the monopole character of the nanoantennas is revealed by electron energy loss spectroscopy, and their efficiency and reproducibility are tested in tip-enhanced Raman spectroscopy experiments performed on single-layer graphene and single-walled carbon nanotubes.},
doi = {10.1002/adom.201800528},
journal = {Advanced Optical Materials},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {8}
}