Nanowires for Biosensing: Lightguiding of Fluorescence as a Function of Diameter and Wavelength
Verardo, Damiano LU ; Lindberg, Frida LU ; Anttu, Nicklas LU ; Niman, Cassandra LU ; Lard, Mercy LU ; Dabkowska, Aleksandra LU ; Nylander, Tommy LU ; Månsson, Alf ; Prinz, Christelle LU and Linke, Heiner LU
(2018)
In Nano Letters
18(8).
p.4796-4802
- Abstract
- Semiconductor nanowires can act as nanoscaled optical fibers, enabling them to guide and concentrate light emitted by surface-bound fluorophores, potentially enhancing the sensitivity of optical biosensing. While parameters such as the nanowire geometry and the fluorophore wavelength can be expected to strongly influence this lightguiding effect, no detailed description of their effect on in-coupling of fluorescent emission is available to date. Here, we use confocal imaging to quantify the lightguiding effect in GaP nanowires as a function of nanowire geometry and light wavelength. Using a combination of finite-difference time-domain simulations and analytical approaches, we identify the role of multiple waveguide modes for the observed... (More)
- Semiconductor nanowires can act as nanoscaled optical fibers, enabling them to guide and concentrate light emitted by surface-bound fluorophores, potentially enhancing the sensitivity of optical biosensing. While parameters such as the nanowire geometry and the fluorophore wavelength can be expected to strongly influence this lightguiding effect, no detailed description of their effect on in-coupling of fluorescent emission is available to date. Here, we use confocal imaging to quantify the lightguiding effect in GaP nanowires as a function of nanowire geometry and light wavelength. Using a combination of finite-difference time-domain simulations and analytical approaches, we identify the role of multiple waveguide modes for the observed lightguiding. The normalized frequency parameter, based on the step-index approximation, predicts the lightguiding ability of the nanowires as a function of diameter and fluorophore wavelength, providing a useful guide for the design of optical biosensors based on nanowires. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/cf177e43-ee82-448a-8970-a495bcd642db
- author
- Verardo, Damiano
LU
; Lindberg, Frida
LU
; Anttu, Nicklas
LU
; Niman, Cassandra
LU
; Lard, Mercy
LU
; Dabkowska, Aleksandra
LU
; Nylander, Tommy
LU
; Månsson, Alf
; Prinz, Christelle
LU
and Linke, Heiner
LU
- organization
- publishing date
- 2018-07-12
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Nano Letters
- volume
- 18
- issue
- 8
- pages
- 4796 - 4802
- publisher
- The American Chemical Society (ACS)
- external identifiers
-
- pmid:30001138
- scopus:85049998667
- ISSN
- 1530-6984
- DOI
- 10.1021/acs.nanolett.8b01360
- language
- English
- LU publication?
- yes
- id
- cf177e43-ee82-448a-8970-a495bcd642db
- date added to LUP
- 2018-10-21 20:02:14
- date last changed
- 2023-11-18 03:04:43
@article{cf177e43-ee82-448a-8970-a495bcd642db,
abstract = {{Semiconductor nanowires can act as nanoscaled optical fibers, enabling them to guide and concentrate light emitted by surface-bound fluorophores, potentially enhancing the sensitivity of optical biosensing. While parameters such as the nanowire geometry and the fluorophore wavelength can be expected to strongly influence this lightguiding effect, no detailed description of their effect on in-coupling of fluorescent emission is available to date. Here, we use confocal imaging to quantify the lightguiding effect in GaP nanowires as a function of nanowire geometry and light wavelength. Using a combination of finite-difference time-domain simulations and analytical approaches, we identify the role of multiple waveguide modes for the observed lightguiding. The normalized frequency parameter, based on the step-index approximation, predicts the lightguiding ability of the nanowires as a function of diameter and fluorophore wavelength, providing a useful guide for the design of optical biosensors based on nanowires.}},
author = {{Verardo, Damiano and Lindberg, Frida and Anttu, Nicklas and Niman, Cassandra and Lard, Mercy and Dabkowska, Aleksandra and Nylander, Tommy and Månsson, Alf and Prinz, Christelle and Linke, Heiner}},
issn = {{1530-6984}},
language = {{eng}},
month = {{07}},
number = {{8}},
pages = {{4796--4802}},
publisher = {{The American Chemical Society (ACS)}},
series = {{Nano Letters}},
title = {{Nanowires for Biosensing: Lightguiding of Fluorescence as a Function of Diameter and Wavelength}},
url = {{http://dx.doi.org/10.1021/acs.nanolett.8b01360}},
doi = {{10.1021/acs.nanolett.8b01360}},
volume = {{18}},
year = {{2018}},
}