Ultrafast near-field microscopy of single gold nanoparticles

Kohei Imura, H. Okamoto

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

Abstract

We investigated near-field optical properties and images of single gold nanorods by using a near-field optical microscope. Observed transmission spectra show distinct transverse and longitudinal surface plasmon resonances. Transmission images observed near the surface plasmon resonances agree qualitatively with calculated maps of optical local density-of-states, and are assignable to plasmon wavefunctions. Ultrafast temporal responses in the single gold nanoparticles were observed by combining a near-field microscope with time-resolved techniques. Observed transient transmission images of the single nanorods show characteristic optical features, and are in good agreement with a calculated map of variation of local density of states arising from the elevation of electronic temperature in the nanorod induced by photoexcitation.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Volume6471
DOIs
Publication statusPublished - 2007
Externally publishedYes
EventUltrafast Phenomena in Semiconductors and Nanostructure Materials XI and Semiconductor Photodetectors IV - San Jose, CA
Duration: 2007 Jan 222007 Jan 24

Other

OtherUltrafast Phenomena in Semiconductors and Nanostructure Materials XI and Semiconductor Photodetectors IV
CitySan Jose, CA
Period07/1/2207/1/24

Fingerprint

Nanorods
nanorods
Image communication systems
near fields
Microscopic examination
Gold
Surface plasmon resonance
gold
Nanoparticles
microscopy
surface plasmon resonance
nanoparticles
Microscopes
Photoexcitation
Wave functions
optical microscopes
photoexcitation
Optical properties
microscopes
optical properties

Keywords

  • Gold nanorod
  • Local density of states
  • Near-field optical microscope
  • Surface plasmon
  • Ultrafast phenomena

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Imura, K., & Okamoto, H. (2007). Ultrafast near-field microscopy of single gold nanoparticles. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 6471). [647103] https://doi.org/10.1117/12.696994

Ultrafast near-field microscopy of single gold nanoparticles. / Imura, Kohei; Okamoto, H.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 6471 2007. 647103.

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

Imura, K & Okamoto, H 2007, Ultrafast near-field microscopy of single gold nanoparticles. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 6471, 647103, Ultrafast Phenomena in Semiconductors and Nanostructure Materials XI and Semiconductor Photodetectors IV, San Jose, CA, 07/1/22. https://doi.org/10.1117/12.696994
Imura K, Okamoto H. Ultrafast near-field microscopy of single gold nanoparticles. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 6471. 2007. 647103 https://doi.org/10.1117/12.696994
Imura, Kohei ; Okamoto, H. / Ultrafast near-field microscopy of single gold nanoparticles. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 6471 2007.
@inproceedings{cd99484bbda0453f9a4c91a1a23fd557,
title = "Ultrafast near-field microscopy of single gold nanoparticles",
abstract = "We investigated near-field optical properties and images of single gold nanorods by using a near-field optical microscope. Observed transmission spectra show distinct transverse and longitudinal surface plasmon resonances. Transmission images observed near the surface plasmon resonances agree qualitatively with calculated maps of optical local density-of-states, and are assignable to plasmon wavefunctions. Ultrafast temporal responses in the single gold nanoparticles were observed by combining a near-field microscope with time-resolved techniques. Observed transient transmission images of the single nanorods show characteristic optical features, and are in good agreement with a calculated map of variation of local density of states arising from the elevation of electronic temperature in the nanorod induced by photoexcitation.",
keywords = "Gold nanorod, Local density of states, Near-field optical microscope, Surface plasmon, Ultrafast phenomena",
author = "Kohei Imura and H. Okamoto",
year = "2007",
doi = "10.1117/12.696994",
language = "English",
isbn = "0819465844",
volume = "6471",
booktitle = "Proceedings of SPIE - The International Society for Optical Engineering",

}

TY - GEN

T1 - Ultrafast near-field microscopy of single gold nanoparticles

AU - Imura, Kohei

AU - Okamoto, H.

PY - 2007

Y1 - 2007

N2 - We investigated near-field optical properties and images of single gold nanorods by using a near-field optical microscope. Observed transmission spectra show distinct transverse and longitudinal surface plasmon resonances. Transmission images observed near the surface plasmon resonances agree qualitatively with calculated maps of optical local density-of-states, and are assignable to plasmon wavefunctions. Ultrafast temporal responses in the single gold nanoparticles were observed by combining a near-field microscope with time-resolved techniques. Observed transient transmission images of the single nanorods show characteristic optical features, and are in good agreement with a calculated map of variation of local density of states arising from the elevation of electronic temperature in the nanorod induced by photoexcitation.

AB - We investigated near-field optical properties and images of single gold nanorods by using a near-field optical microscope. Observed transmission spectra show distinct transverse and longitudinal surface plasmon resonances. Transmission images observed near the surface plasmon resonances agree qualitatively with calculated maps of optical local density-of-states, and are assignable to plasmon wavefunctions. Ultrafast temporal responses in the single gold nanoparticles were observed by combining a near-field microscope with time-resolved techniques. Observed transient transmission images of the single nanorods show characteristic optical features, and are in good agreement with a calculated map of variation of local density of states arising from the elevation of electronic temperature in the nanorod induced by photoexcitation.

KW - Gold nanorod

KW - Local density of states

KW - Near-field optical microscope

KW - Surface plasmon

KW - Ultrafast phenomena

UR - http://www.scopus.com/inward/record.url?scp=34248682675&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34248682675&partnerID=8YFLogxK

U2 - 10.1117/12.696994

DO - 10.1117/12.696994

M3 - Conference contribution

SN - 0819465844

SN - 9780819465849

VL - 6471

BT - Proceedings of SPIE - The International Society for Optical Engineering

ER -