Galloway, CM;
Kreuzer, MP;
Acimovic, SS;
Volpe, G;
Correia, M;
Petersen, SB;
Neves-Petersen, MT;
(2013)
Plasmon-Assisted Delivery of Single Nano-Objects in an Optical Hot Spot.
Nano Letters
, 13
(9)
pp. 4299-4304.
10.1021/nl402071p.
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Abstract
Fully exploiting the capability of nano-optics to enhance light-matter interaction on the nanoscale is conditioned by bringing the nano-object to interrogate within the minuscule volume where the field is concentrated. There currently exists several approaches to control the immobilization of nano-objects but they all involve a cumbersome delivery step and require prior knowledge of the “hot spot” location.1−6 Herein, we present a novel technique in which the enhanced local field in the hot spot is the driving mechanism that triggers the binding of proteins via three-photon absorption. This way, we demonstrate exclusive immobilization of nanoscale amounts of bovine serum albumin molecules into the nanometer-sized gap of plasmonic dimers. The immobilized proteins can then act as a scaffold to subsequently attach an additional nanoscale object such as a molecule or a nanocrystal. This universal technique is envisioned to benefit a wide range of nano-optical functionalities including biosensing,7−12 enhanced spectroscopy like surface-enhanced Raman spectroscopy13,14 or surface-enhanced infrared absorption spectroscopy,15 as well as quantum optics.1,2,6
| Type: | Article |
|---|---|
| Title: | Plasmon-Assisted Delivery of Single Nano-Objects in an Optical Hot Spot |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1021/nl402071p |
| Publisher version: | https://doi.org/10.1021/nl402071p |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher's terms and conditions. |
| Keywords: | Nanopositioning; fabrication; plasmonics; biosensing; quantum optics |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10125191 |
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