Optical sorting of gold nanoparticles based on the red-shift of plasmon resonance

Martin Ploschner, Tomáš Čižmar, Michael Mazilu, Andrea Di Falco, Kishan Dholakia

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

Abstract

We present an experimental technique allowing size-based all-optical sorting of gold nanoparticles. The technique is based on the red-shift of plasmon resonance, due to retardation effects, with increasing particle size. As a result, smaller gold nanoparticles are influenced strongly by shorter wavelengths whereas larger gold nanoparticles are influenced more strongly by longer wavelengths. We utilise this retardation effect and realize sorting in a system of two counter-propagating evanescent waves, each at different wavelengths that selectively guide nanoparticles of different sizes in opposite directions. We validate this concept by demonstrating bidirectional sorting of gold nanoparticles of either 150 or 130 nm in diameter from those of 100 nm in diameter within a mixture.

Original languageEnglish
Title of host publicationOptical Trapping and Optical Micromanipulation IX
DOIs
Publication statusPublished - 2012 Dec 1
EventOptical Trapping and Optical Micromanipulation IX - San Diego, CA, United States
Duration: 2012 Aug 122012 Aug 16

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8458
ISSN (Print)0277-786X

Conference

ConferenceOptical Trapping and Optical Micromanipulation IX
CountryUnited States
CitySan Diego, CA
Period12/8/1212/8/16

Fingerprint

Gold Nanoparticles
Plasmon
classifying
Sorting
Gold
red shift
gold
Nanoparticles
nanoparticles
Wavelength
Evanescent Wave
wavelengths
Particle Size
Radiation counters
evanescent waves
counters
Particle size

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Ploschner, M., Čižmar, T., Mazilu, M., Di Falco, A., & Dholakia, K. (2012). Optical sorting of gold nanoparticles based on the red-shift of plasmon resonance. In Optical Trapping and Optical Micromanipulation IX [84581L] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 8458). https://doi.org/10.1117/12.928482
Ploschner, Martin ; Čižmar, Tomáš ; Mazilu, Michael ; Di Falco, Andrea ; Dholakia, Kishan. / Optical sorting of gold nanoparticles based on the red-shift of plasmon resonance. Optical Trapping and Optical Micromanipulation IX. 2012. (Proceedings of SPIE - The International Society for Optical Engineering).
@inproceedings{ba437581db7f4281846445774aef1257,
title = "Optical sorting of gold nanoparticles based on the red-shift of plasmon resonance",
abstract = "We present an experimental technique allowing size-based all-optical sorting of gold nanoparticles. The technique is based on the red-shift of plasmon resonance, due to retardation effects, with increasing particle size. As a result, smaller gold nanoparticles are influenced strongly by shorter wavelengths whereas larger gold nanoparticles are influenced more strongly by longer wavelengths. We utilise this retardation effect and realize sorting in a system of two counter-propagating evanescent waves, each at different wavelengths that selectively guide nanoparticles of different sizes in opposite directions. We validate this concept by demonstrating bidirectional sorting of gold nanoparticles of either 150 or 130 nm in diameter from those of 100 nm in diameter within a mixture.",
author = "Martin Ploschner and Tom{\'a}š Čižmar and Michael Mazilu and {Di Falco}, Andrea and Kishan Dholakia",
year = "2012",
month = "12",
day = "1",
doi = "10.1117/12.928482",
language = "English",
isbn = "9780819491756",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
booktitle = "Optical Trapping and Optical Micromanipulation IX",

}

Ploschner, M, Čižmar, T, Mazilu, M, Di Falco, A & Dholakia, K 2012, Optical sorting of gold nanoparticles based on the red-shift of plasmon resonance. in Optical Trapping and Optical Micromanipulation IX., 84581L, Proceedings of SPIE - The International Society for Optical Engineering, vol. 8458, Optical Trapping and Optical Micromanipulation IX, San Diego, CA, United States, 12/8/12. https://doi.org/10.1117/12.928482

Optical sorting of gold nanoparticles based on the red-shift of plasmon resonance. / Ploschner, Martin; Čižmar, Tomáš; Mazilu, Michael; Di Falco, Andrea; Dholakia, Kishan.

Optical Trapping and Optical Micromanipulation IX. 2012. 84581L (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 8458).

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

TY - GEN

T1 - Optical sorting of gold nanoparticles based on the red-shift of plasmon resonance

AU - Ploschner, Martin

AU - Čižmar, Tomáš

AU - Mazilu, Michael

AU - Di Falco, Andrea

AU - Dholakia, Kishan

PY - 2012/12/1

Y1 - 2012/12/1

N2 - We present an experimental technique allowing size-based all-optical sorting of gold nanoparticles. The technique is based on the red-shift of plasmon resonance, due to retardation effects, with increasing particle size. As a result, smaller gold nanoparticles are influenced strongly by shorter wavelengths whereas larger gold nanoparticles are influenced more strongly by longer wavelengths. We utilise this retardation effect and realize sorting in a system of two counter-propagating evanescent waves, each at different wavelengths that selectively guide nanoparticles of different sizes in opposite directions. We validate this concept by demonstrating bidirectional sorting of gold nanoparticles of either 150 or 130 nm in diameter from those of 100 nm in diameter within a mixture.

AB - We present an experimental technique allowing size-based all-optical sorting of gold nanoparticles. The technique is based on the red-shift of plasmon resonance, due to retardation effects, with increasing particle size. As a result, smaller gold nanoparticles are influenced strongly by shorter wavelengths whereas larger gold nanoparticles are influenced more strongly by longer wavelengths. We utilise this retardation effect and realize sorting in a system of two counter-propagating evanescent waves, each at different wavelengths that selectively guide nanoparticles of different sizes in opposite directions. We validate this concept by demonstrating bidirectional sorting of gold nanoparticles of either 150 or 130 nm in diameter from those of 100 nm in diameter within a mixture.

UR - http://www.scopus.com/inward/record.url?scp=84872083483&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84872083483&partnerID=8YFLogxK

U2 - 10.1117/12.928482

DO - 10.1117/12.928482

M3 - Conference contribution

AN - SCOPUS:84872083483

SN - 9780819491756

T3 - Proceedings of SPIE - The International Society for Optical Engineering

BT - Optical Trapping and Optical Micromanipulation IX

ER -

Ploschner M, Čižmar T, Mazilu M, Di Falco A, Dholakia K. Optical sorting of gold nanoparticles based on the red-shift of plasmon resonance. In Optical Trapping and Optical Micromanipulation IX. 2012. 84581L. (Proceedings of SPIE - The International Society for Optical Engineering). https://doi.org/10.1117/12.928482