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Visualizing electromagnetic fields at the nanoscale by single molecule localization

Visualizing electromagnetic fields at the nanoscale by single molecule localization
Visualizing electromagnetic fields at the nanoscale by single molecule localization
Coupling of light to the free electrons at metallic surfaces allows the confinement of electric fields to subwavelength dimensions, far below the optical diffraction limit. While this is routinely used to manipulate light at the nanoscale,1 in electro-optic devices2 and enhanced spectroscopic techniques,3?6 no characterization technique for imaging the underlying nanoscopic electromagnetic fields exists, which does not perturb the field4,7 or employ complex electron beam imaging.8,9 Here, we demonstrate the direct visualization of electromagnetic fields on patterned metallic substrates at nanometer resolution, exploiting a strong “autonomous” fluorescence-blinking behavior of single molecules within the confined fields allowing their localization. Use of DNA-constructs for precise positioning of fluorescence dyes on the surface induces this distance-dependent autonomous blinking thus completely obviating the need for exogenous agents or switching methods. Mapping such electromagnetic field distributions at nanometer resolution aids the rational design of nanometals for diverse photonic applications.
super-resolution, single molecule localization, plasmons, nanostructures, surface-enhanced
1530-6984
3217-3223
Steuwe, Christian
a7800895-80a0-4ad0-9583-4322b4964158
Erdelyi, Miklos
d6f7c045-5ff3-42aa-84f0-68bf336d00f2
Szekeres, G.
6a01ea51-743e-40a2-88d6-b33cf5e9ffdd
Csete, M.
93773160-6035-4657-bb49-22c0a4f827b8
Baumberg, Jeremy J.
51423b5f-bdb8-4851-8d50-472253ceb12c
Mahajan, Sumeet
b131f40a-479e-4432-b662-19d60d4069e9
Kaminski, Clemens F.
3d075bb8-2e01-4664-8c81-b013922cc15f
Steuwe, Christian
a7800895-80a0-4ad0-9583-4322b4964158
Erdelyi, Miklos
d6f7c045-5ff3-42aa-84f0-68bf336d00f2
Szekeres, G.
6a01ea51-743e-40a2-88d6-b33cf5e9ffdd
Csete, M.
93773160-6035-4657-bb49-22c0a4f827b8
Baumberg, Jeremy J.
51423b5f-bdb8-4851-8d50-472253ceb12c
Mahajan, Sumeet
b131f40a-479e-4432-b662-19d60d4069e9
Kaminski, Clemens F.
3d075bb8-2e01-4664-8c81-b013922cc15f

Steuwe, Christian, Erdelyi, Miklos, Szekeres, G., Csete, M., Baumberg, Jeremy J., Mahajan, Sumeet and Kaminski, Clemens F. (2015) Visualizing electromagnetic fields at the nanoscale by single molecule localization. Nano Letters, 15 (5), 3217-3223. (doi:10.1021/acs.nanolett.5b00405).

Record type: Article

Abstract

Coupling of light to the free electrons at metallic surfaces allows the confinement of electric fields to subwavelength dimensions, far below the optical diffraction limit. While this is routinely used to manipulate light at the nanoscale,1 in electro-optic devices2 and enhanced spectroscopic techniques,3?6 no characterization technique for imaging the underlying nanoscopic electromagnetic fields exists, which does not perturb the field4,7 or employ complex electron beam imaging.8,9 Here, we demonstrate the direct visualization of electromagnetic fields on patterned metallic substrates at nanometer resolution, exploiting a strong “autonomous” fluorescence-blinking behavior of single molecules within the confined fields allowing their localization. Use of DNA-constructs for precise positioning of fluorescence dyes on the surface induces this distance-dependent autonomous blinking thus completely obviating the need for exogenous agents or switching methods. Mapping such electromagnetic field distributions at nanometer resolution aids the rational design of nanometals for diverse photonic applications.

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More information

Accepted/In Press date: 27 April 2015
e-pub ahead of print date: 27 April 2015
Published date: 13 May 2015
Keywords: super-resolution, single molecule localization, plasmons, nanostructures, surface-enhanced
Organisations: Institute for Life Sciences, Chemical Biology Group

Identifiers

Local EPrints ID: 377817
URI: http://eprints.soton.ac.uk/id/eprint/377817
ISSN: 1530-6984
PURE UUID: 91d78578-be90-432f-b873-669596f6c763
ORCID for Sumeet Mahajan: ORCID iD orcid.org/0000-0001-8923-6666

Catalogue record

Date deposited: 18 Jun 2015 12:19
Last modified: 21 Nov 2021 02:59

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Contributors

Author: Christian Steuwe
Author: Miklos Erdelyi
Author: G. Szekeres
Author: M. Csete
Author: Jeremy J. Baumberg
Author: Sumeet Mahajan ORCID iD
Author: Clemens F. Kaminski

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