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Photothermal Effect in Plasmonic Nanotip for LSPR Sensing
The influence of heat generation on the conventional process of LSPR based sensing has not been explored thus far. Therefore, a need exists to draw attention toward the heat generation issue during LSPR sensing as it may affect the refractive index of the analyte, leading to incorrect sensory conclu...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7039235/ https://www.ncbi.nlm.nih.gov/pubmed/31991744 http://dx.doi.org/10.3390/s20030671 |
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author | Nisar, Muhammad Shemyal Kang, Siyu Zhao, Xiangwei |
author_facet | Nisar, Muhammad Shemyal Kang, Siyu Zhao, Xiangwei |
author_sort | Nisar, Muhammad Shemyal |
collection | PubMed |
description | The influence of heat generation on the conventional process of LSPR based sensing has not been explored thus far. Therefore, a need exists to draw attention toward the heat generation issue during LSPR sensing as it may affect the refractive index of the analyte, leading to incorrect sensory conclusions. This manuscript addresses the connection between the photo-thermal effect and LSPR. We numerically analyzed the heat performance of a gold cladded nanotip. The numerical results predict a change in the micro-scale temperature in the microenvironment near the nanotip. These numerical results predict a temperature increase of more than 20 K near the apex of the nanotip, which depends on numerous factors including the input optical power and the diameter of the fiber. We analytically show that this change in the temperature influences a change in the refractive index of the microenvironment in the vicinity of the nanotip. In accordance with our numerical and analytical findings, we experimentally show an LSPR shift induced by a change in the input power of the source. We believe that our work will bring the importance of temperature dependence in nanotip based LSPR sensing to the fore. |
format | Online Article Text |
id | pubmed-7039235 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-70392352020-03-09 Photothermal Effect in Plasmonic Nanotip for LSPR Sensing Nisar, Muhammad Shemyal Kang, Siyu Zhao, Xiangwei Sensors (Basel) Article The influence of heat generation on the conventional process of LSPR based sensing has not been explored thus far. Therefore, a need exists to draw attention toward the heat generation issue during LSPR sensing as it may affect the refractive index of the analyte, leading to incorrect sensory conclusions. This manuscript addresses the connection between the photo-thermal effect and LSPR. We numerically analyzed the heat performance of a gold cladded nanotip. The numerical results predict a change in the micro-scale temperature in the microenvironment near the nanotip. These numerical results predict a temperature increase of more than 20 K near the apex of the nanotip, which depends on numerous factors including the input optical power and the diameter of the fiber. We analytically show that this change in the temperature influences a change in the refractive index of the microenvironment in the vicinity of the nanotip. In accordance with our numerical and analytical findings, we experimentally show an LSPR shift induced by a change in the input power of the source. We believe that our work will bring the importance of temperature dependence in nanotip based LSPR sensing to the fore. MDPI 2020-01-25 /pmc/articles/PMC7039235/ /pubmed/31991744 http://dx.doi.org/10.3390/s20030671 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Nisar, Muhammad Shemyal Kang, Siyu Zhao, Xiangwei Photothermal Effect in Plasmonic Nanotip for LSPR Sensing |
title | Photothermal Effect in Plasmonic Nanotip for LSPR Sensing |
title_full | Photothermal Effect in Plasmonic Nanotip for LSPR Sensing |
title_fullStr | Photothermal Effect in Plasmonic Nanotip for LSPR Sensing |
title_full_unstemmed | Photothermal Effect in Plasmonic Nanotip for LSPR Sensing |
title_short | Photothermal Effect in Plasmonic Nanotip for LSPR Sensing |
title_sort | photothermal effect in plasmonic nanotip for lspr sensing |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7039235/ https://www.ncbi.nlm.nih.gov/pubmed/31991744 http://dx.doi.org/10.3390/s20030671 |
work_keys_str_mv | AT nisarmuhammadshemyal photothermaleffectinplasmonicnanotipforlsprsensing AT kangsiyu photothermaleffectinplasmonicnanotipforlsprsensing AT zhaoxiangwei photothermaleffectinplasmonicnanotipforlsprsensing |