Tip-based plasmonics: Squeezing light with metallic nanoprobes

Nathan C. Lindquist, Jincy Jose, Sudhir Cherukulappurath, Xiaoshu Chen, Timothy W. Johnson, Sang Hyun Oh

Research output: Contribution to journalReview articlepeer-review

38 Scopus citations

Abstract

Nanofabricated metallic tips are at the core of important research in single-molecule imaging, near-field scanning optical microscopy, tip-enhanced Raman spectroscopy, as well as potential commercial applications such as heat-assisted magnetic recording. While challenging to fabricate, much progress has been made towards the reliable production of extremely sharp (10 nm) metallic probes. In this review, the various factors that go into the design of metallic tips, their fabrication, packaging and system integration, characterization, passivation, and eventual use are discussed. Fabrication challenges, implementation issues, optical excitation schemes, and various current and emerging applications are also discussed. For the rapidly emerging fields of plasmonics and nanophotonics, the use of sharp metallic tips has generated significant scientific progress and will play an integral role well into the future. Nanofabricated metallic tips are at the core of important research in single-molecule imaging, near-field scanning optical microscopy, tip-enhanced Raman spectroscopy, as well as potential commercial applications such as heat-assisted magnetic recording. While challenging to fabricate, much progress has been made towards the reliable production of extremely sharp (10 nm) metallic probes. In this review, we discuss the various factors that go into the design of metallic tips, their fabrication, packaging and system integration, characterization, passivation, and eventual use. Fabrication challenges, implementation issues, optical excitation schemes, and various current and emerging applications are also discussed. For the rapidly emerging fields of plasmonics and nanophotonics, the use of sharp metallic tips has generated significant scientific progress and will play an integral role well into the future.

Original languageEnglish (US)
Pages (from-to)453-477
Number of pages25
JournalLaser and Photonics Reviews
Volume7
Issue number4
DOIs
StatePublished - Jul 1 2013

Keywords

  • Heat-assisted magnetic recording
  • Metallic tips
  • Near-field scanning optical microscopy
  • Optical antenna
  • Plasmonic trapping
  • Plasmonics
  • Template stripping
  • Tip-enhanced Raman scattering

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