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Porous Silicon Optical Devices: Recent Advances in Biosensing Applications

This review summarizes the leading advancements in porous silicon (PSi) optical-biosensors, achieved over the past five years. The cost-effective fabrication process, the high internal surface area, the tunable pore size, and the photonic properties made the PSi an appealing transducing substrate fo...

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Detalles Bibliográficos
Autores principales: Moretta, Rosalba, De Stefano, Luca, Terracciano, Monica, Rea, Ilaria
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7917735/
https://www.ncbi.nlm.nih.gov/pubmed/33668616
http://dx.doi.org/10.3390/s21041336
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author Moretta, Rosalba
De Stefano, Luca
Terracciano, Monica
Rea, Ilaria
author_facet Moretta, Rosalba
De Stefano, Luca
Terracciano, Monica
Rea, Ilaria
author_sort Moretta, Rosalba
collection PubMed
description This review summarizes the leading advancements in porous silicon (PSi) optical-biosensors, achieved over the past five years. The cost-effective fabrication process, the high internal surface area, the tunable pore size, and the photonic properties made the PSi an appealing transducing substrate for biosensing purposes, with applications in different research fields. Different optical PSi biosensors are reviewed and classified into four classes, based on the different biorecognition elements immobilized on the surface of the transducing material. The PL signal modulation and the effective refractive index changes of the porous matrix are the main optical transduction mechanisms discussed herein. The approaches that are commonly employed to chemically stabilize and functionalize the PSi surface are described.
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spelling pubmed-79177352021-03-02 Porous Silicon Optical Devices: Recent Advances in Biosensing Applications Moretta, Rosalba De Stefano, Luca Terracciano, Monica Rea, Ilaria Sensors (Basel) Review This review summarizes the leading advancements in porous silicon (PSi) optical-biosensors, achieved over the past five years. The cost-effective fabrication process, the high internal surface area, the tunable pore size, and the photonic properties made the PSi an appealing transducing substrate for biosensing purposes, with applications in different research fields. Different optical PSi biosensors are reviewed and classified into four classes, based on the different biorecognition elements immobilized on the surface of the transducing material. The PL signal modulation and the effective refractive index changes of the porous matrix are the main optical transduction mechanisms discussed herein. The approaches that are commonly employed to chemically stabilize and functionalize the PSi surface are described. MDPI 2021-02-13 /pmc/articles/PMC7917735/ /pubmed/33668616 http://dx.doi.org/10.3390/s21041336 Text en © 2021 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 Review
Moretta, Rosalba
De Stefano, Luca
Terracciano, Monica
Rea, Ilaria
Porous Silicon Optical Devices: Recent Advances in Biosensing Applications
title Porous Silicon Optical Devices: Recent Advances in Biosensing Applications
title_full Porous Silicon Optical Devices: Recent Advances in Biosensing Applications
title_fullStr Porous Silicon Optical Devices: Recent Advances in Biosensing Applications
title_full_unstemmed Porous Silicon Optical Devices: Recent Advances in Biosensing Applications
title_short Porous Silicon Optical Devices: Recent Advances in Biosensing Applications
title_sort porous silicon optical devices: recent advances in biosensing applications
topic Review
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7917735/
https://www.ncbi.nlm.nih.gov/pubmed/33668616
http://dx.doi.org/10.3390/s21041336
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