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Paulo S. S. dos Santos received the B.S. degree and M.S. degree in physical engineering from the Faculty of Sciences of the University of Porto (FCUP), Porto, Portugal in 2016 and 2018, respectively. From 2019 to 2020 he was a researcher at Centre for Applied Photonics (CAP) of INESCTEC, Porto, Portugal. Currently he just finished his Ph.d degree in Physical Engineeringat Faculty of Engineering of the University of Porto (FEUP) at December 4, 2024. His research interest includes the synthesis of complex and highly anisotropic plasmonic nanoparticles for highly performing sensing applications at near infrared wavelengths. This research topic is pursued in combination with rigorous studies on the development of optical fiber sensor configurations to potentiate the performance of the developed plasmonic nanoparticles. Also, the study between the complex interactions with plasmonic thin films and nanoparticles for chemical/biological sensing applications have been a continuous focus of the developed research work. In addition to the previous areas, Paulo also worked on the development of precise interrogation techniques, mainly based of source/detector fast modulation with deconvolution and spectral reconstruction methods, followed by practical development, implementation and validation of interrogation systems for multiple types of optical fiber sensors. Among the last two years he received recognition for his work with two best presentation awards at international conferences (AOP 2022, INL global photonics meetup 2023, SPIE Optics+Optoelectronics 2023) and national conferences (PRODEF UPorto 2022 and DCE UPorto 2023), with over 103 citations since 2020, his work has significantly advanced optical fiber sensors, including Bragg grating technologies, interferometric sensors, and plasmonic sensing systems.
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Identification

Personal identification

Full name
PAULO SÉRGIO SOARES DOS SANTOS
Date of birth
1993/05/07

Citation names

  • Santos, Paulo

Author identifiers

Ciência ID
D61E-544D-1DF9
ORCID iD
0000-0002-3826-7427

Languages

Language Speaking Reading Writing Listening Peer-review
Portuguese Advanced (C1) Advanced (C1) Advanced (C1) Advanced (C1)
English Advanced (C1) Advanced (C1) Advanced (C1) Advanced (C1)
Education
Degree Classification
2020/02/01 - 2024/12/04
Concluded
 Programa Doutoral em Engenharia Física (Doutoramento)
Major in Sensores plasmónicos em fibra ótica
Universidade do Porto Faculdade de Engenharia, Portugal
"Development of optical fiber sensors with plasmonic nanostructures" (THESIS/DISSERTATION)
2012/09/01 - 2018/12/11
Concluded
 Mestrado Integrado em Engenharia Física (Mestrado integrado)
Major in Optoeletrónica
Universidade do Porto Faculdade de Ciências, Portugal
"Development of alw-cost interrogation system platform for corrosion sensors in offshore metallic structures" (THESIS/DISSERTATION)
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Affiliation

Science

Category
Host institution 		Employer
2025/02/12 - Current Postdoc (Research) Instituto de Engenharia de Sistemas e Computadores Tecnologia e Ciência, Portugal
Instituto de Engenharia de Sistemas e Computadores Tecnologia e Ciência Centro de Fotónica Aplicada, Portugal

Others

Category
Host institution 		Employer
2018/09/12 - 2019/04/11 Sensores ópticos, Fibra Óptica: Bolsa de Investigação. Técnicas de interrogação avançadas para sensores ópticos baseados em micro-cavidades. Instituto de Engenharia de Sistemas e Computadores Tecnologia e Ciência Center for Research in Advanced Computing Systems, Portugal
2015/09/15 - 2018/06/14 Explicador de ensino secundário Apoio ao estudo Ana Fernandes, Portugal
2017/02/01 - 2017/07/31 PEEC - Extra-curricular internship project Tema: "Sensores Químicos em fibras ópticas". Orientados: José Manuel Marques Martins de Almeida. Co-orientador: Luís Carlos Costa Coelho. Universidade do Porto Faculdade de Ciências, Portugal
Projects

Contract

Designation Funders
2018/11/28 - 2021/04/30 SolSensors – Development of Advanced Fibre Optic Sensors to Monitor the Durability of Concrete and Reinforced Concrete Structures
FCT PROJECT | 02/SAICT/2017
Researcher
Universidade do Minho, Portugal

Instituto de Engenharia de Sistemas e Computadores Tecnologia e Ciência Center for Research in Advanced Computing Systems, Portugal

ENGIPROJECTS, Lda, Portugal
Fundação para a Ciência e a Tecnologia
Ongoing
2018/09/01 - 2019/06/25 On chip whispering gallery mode optical microcavities for emerging microcontaminant determination in waters
(PHOTONICS/0002/2016)
Research Fellow
Instituto de Engenharia de Sistemas e Computadores Tecnologia e Ciência Center for Research in Advanced Computing Systems, Portugal
Fundação para a Ciência e a Tecnologia
Ongoing

Other

Designation Funders
2019/09/01 - 2020/08/31 FOOD4U - Real-time monitoring of fresh food quality with optical sensors
Interal-seed-projects
Researcher
Instituto de Engenharia de Sistemas e Computadores Tecnologia e Ciência Center for Research in Advanced Computing Systems, Portugal
Outputs

Publications

Conference paper
  1. Paulo S. S. dos Santos; João P. Mendes; José M. de Almeida; Isabel Pastoriza-Santos; Luis C. Coelho. "Tuning bimetallic Au@Ag nanorods localized surface plasmon resonance on side-polished optical fiber sensing configurations at near-infrared wavelengths". 2023.
    10.1117/12.2665733
  2. Paulo S. S. dos Santos; João P. Mendes; I. Pastoriza-Santos; José M.M. M. de Almeida; Lu´is C. C. Coelho. "Scalable and Cost-Effective All-Chemical Production of Stable Gold-Coated Silver Thin-Films for High-Performance Plasmonic Optical Fiber Sensors". 2023.
    10.1364/OFS.2023.Tu3.76
  3. "Optimization of interrogation methods for sensors based on optical microbubble resonators". 2019.
    10.1117/12.2530919
  4. Santos, Paulo. "Low-Cost Interrogation System for Long Period Fiber Gratings as Sensing Devices". 2018.
    10.1364/OFS.2018.ThE59
Journal article
  1. dos Santos, Paulo S.S.; Mendes, João P.; Pastoriza-Santos, I.; Juste, Jorge-Perez; de Almeida, José M.M.M.; Coelho, Luís C.C.. "Gold-coated silver nanorods on side-polished singlemode optical fibers for remote sensing at optical telecommunication wavelengths". Sensors and Actuators B: Chemical 425 (2025): 136936. https://doi.org/10.1016/j.snb.2024.136936.
    Open access • Published • 10.1016/j.snb.2024.136936
  2. dos Santos, Paulo S. S.; Mendes, João P.; Pérez-Juste, Jorge; Pastoriza-Santos, I.; de Almeida, José M. M. M.; Coelho, Luís C. C.. "From localized to propagating surface plasmon resonances in Au nanoparticle-coated optical fiber sensors and its implications in biosensing". Photonics Research 12 10 (2024): 2166. https://doi.org/10.1364/prj.518181.
    Open access • 10.1364/prj.518181
  3. Amorim, Vítor A.; Frigenti, Gabriele; Baldini, Francesco; Berneschi, Simone; Farnesi, Daniele; Jorge, Pedro A. S.; Maia, João M.; et al. "Integrated All-In-Silica Optofluidic Platform Based on Microbubble Resonator and Femtosecond Laser Written Surface Waveguide". IEEE Sensors Journal 24 16 (2024): 25573-25580. https://doi.org/10.1109/jsen.2024.3418203.
    10.1109/jsen.2024.3418203
  4. Mendes, João P.; dos Santos, Paulo S. S.; Dias, Bernardo; Núñez-Sánchez, Sara; Pastoriza-Santos, I.; Pérez-Juste, Jorge; Pereira, Carlos M.; et al. "Exciting Surface Plasmon Resonances on Gold Thin Film-Coated Optical Fibers Through Nanoparticle Light Scattering". Advanced Optical Materials 12 25 (2024): https://doi.org/10.1002/adom.202400433.
    Open access • 10.1002/adom.202400433
  5. Kant, Krishna; Beeram, Reshma; Cao, Yi; dos Santos, Paulo S. S.; González-Cabaleiro, Lara; García-Lojo, Daniel; Guo, Heng; et al. "Plasmonic nanoparticle sensors: current progress, challenges, and future prospects". Nanoscale Horizons 9 12 (2024): 2085-2166. https://doi.org/10.1039/d4nh00226a.
    10.1039/d4nh00226a
  6. João Araújo; Paulo S. S. dos Santos; Bernardo Santos Dias; José Manuel Marques Martins de Almeida; Luís C. C. Coelho. "Low-Cost Wideband Interrogation System for Fiber Optic Sensors". IEEE Sensors Journal 23 13 (2023): 14315-14322. http://dx.doi.org/10.1109/jsen.2023.3272368.
    10.1109/jsen.2023.3272368
  7. Paulo S. S. Dos Santos; João P. Mendes; Bernardo Dias; Jorge Pérez-Juste; José M. M. M. De Almeida; Isabel Pastoriza-Santos; Luis C. C. Coelho. "Spectral Analysis Methods for Improved Resolution and Sensitivity: Enhancing SPR and LSPR Optical Fiber Sensing". Sensors (2023): https://doi.org/10.3390/s23031666.
    10.3390/s23031666
  8. Paulo S. S. dos Santos; João Mendes; B. Dias; I. Pastoriza-Santos; J. M. M. M. de Almeida; Luís C. C. Coelho. "Strongly coupled plasmonic systems on optical fiber sensors: A study on nanomaterial properties". Journal of Physics: Conference Series 2407 1 (2022): 012052-012052. http://dx.doi.org/10.1088/1742-6596/2407/1/012052.
    10.1088/1742-6596/2407/1/012052
  9. João C. C. Araújo; Bernardo Dias; Paulo S. S. dos Santos; J. M. M. M. de Almeida; Luís C. C. Coelho. "Development of a Low-Cost Interrogation System Using a MEMS Fabry-Pérot Tunable Filter". Journal of Physics: Conference Series 2407 1 (2022): 012008-012008. http://dx.doi.org/10.1088/1742-6596/2407/1/012008.
    10.1088/1742-6596/2407/1/012008
  10. Paulo Santos; José Almeida; Luis Coelho. "Study of LSPR Spectral Analysis Techniques on SPR Optical Fiber Sensors". U.Porto Journal of Engineering (2022): https://doi.org/10.24840/2183-6493_008.003_0004.
    10.24840/2183-6493_008.003_0004
  11. "Spectral Reconstruction and Bayesian Model Framework for Characterization of Long Period Fiber Gratings". IEEE Instrumentation & Measurement Magazine 24 5 (2021): 56-62. http://dx.doi.org/10.1109/mim.2021.9491007.
    10.1109/mim.2021.9491007
  12. Helena Vasconcelos; Ana Matias; Pedro Jorge; Cristina Saraiva; João Mendes; João Araújo; Bernardo Dias; et al. "Optical Biosensor for the Detection of Hydrogen Peroxide in Milk". Chemistry Proceedings (2021): https://doi.org/10.3390/CSAC2021-10466.
    10.3390/CSAC2021-10466
  13. Paulo Santos; de Almeida JMMM; isabel pastoriza-santos; Luís C. C. Coelho. "Advances in Plasmonic Sensing at the NIR—A Review". Sensors (2021): https://www.mdpi.com/1424-8220/21/6/2111.
    10.3390/s21062111
  14. "Development of a Long Period Fiber Grating Interrogation System Using a Multimode Laser Diode". Sensors (2021): https://www.mdpi.com/1424-8220/21/3/749.
    10.3390/s21030749
  15. "A Simple Spectral Interrogation System for Optical Fiber Sensors". Proceedings 15 1 (2019): 6-6. http://dx.doi.org/10.3390/proceedings2019015006.
    10.3390/proceedings2019015006
  16. P. S. S. dos Santos; P. A. S. Jorge; José M. M. M. de Almeida; L. Coelho; Paulo Santos; P.A.S. Jorge; de Almeida JMMM; Luís C. C. Coelho. "Low-cost interrogation system for long-period fiber gratings applied to remote sensing". Sensors 19 7 (2019): https://www.mdpi.com/1424-8220/19/7/1500.
    Open access • Published • 10.3390/s19071500
  17. Santos, Paulo. "Real-Time Early Warning Strategies for Corrosion Mitigation in Harsh Environments". Journal of Lightwave Technology 36 4 (2018): 1152-1158.
    10.1109/JLT.2017.2755076
Thesis / Dissertation
  1. "Development of optical fiber sensors with plasmonic nanostructures". PhD, Universidade do Porto Faculdade de Engenharia, 2024. https://hdl.handle.net/10216/164482.
Activities

Oral presentation

Presentation title Event name
Host (Event location)
2021/09/21 Refractometric sensitivity enhancement for LSPR based sensors on multimode optical fiber structures Spanish Conference on Nanophotonics - CEN2021
Spanish Conference on Nanophotonics (Vigo, Spain)
2021/09/05 Refractometric sensitivity comparison between different nanoparticle structures towards optical fiber sensors nanoPT Online conference
nanoPT (Portugal)
2021/06/05 Optimization of sensitivity and resolution calculation of optical fiber plasmonic sensors DCE 2021
Universidade do Porto, Faculdade de Engenharia (Porto, Portugal)
2020/09/05 Acoplamento de radiação electromagnética a guias de onda monomodo no infravermelho próximo FÍSICA2020 – 22ª Conferência Nacional de Física e 30ºEncontro Ibérico para o Ensino da Física
Universidade de Lisboa (lisboa, Portugal)
2018/11 Low-cost interrogation system for long-period fiber gratings as corrosion sensors Scientific meeting of CAP Talk series
SPIE student chapter of University of Porto, (porto, Portugal)
2018/08/30 Sistema de interrogação de baixo custo para redes de período longo em fibra ótica FÍSICA2018 – 21ª Conferência Nacional de Física e 28º Encontro Ibérico para o Ensino da Física
Sociedade Portuguesa de Física (Covilhã, Portugal)

Event participation

Activity description
Type of event 		Event name
Institution / Organization
2019/05/31 - 2019/06/04 Apresentação tipo poster "Interrogation methods for functionalized optical microbubble resonators aimed at water microcontaminants”. P. S. S. dos Santos, P. A. S. Jorge, e L. Coelho
Conference
 IV International Conference on Applications of Optics and Photonics. Lisboa, Portugal
SOCIEDADE PORTUGUESA DE ÓPTICA E FOTÓNICA, Portugal
2019/05/09 - 2019/05/11 Apresentação tipo poster: "A Simple Spectral Interrogation System for Optical Fiber Sensors". P. S. S. dos Santos, P.A.S. Jorge, José M. M. M. de Almeida, e L. Coelho
Symposium
 7th International Symposium on Sensor Science, Napoli, Italy.
Multidisciplinary Digital Publishing Institute AG, Switzerland
2018/09/24 - 2018/09/28 Apresentação tipo Poster, Titulo: Low-Cost Interrogation System for Long Period Fiber Gratings as Sensing Devices. P. S. S. dos Santos, P. A. S. Jorge, J. M. M. M. de Almeida, and L. Coelho.
Conference
 OFS-26 - 26th International Conference on Optical Fibre Sensors. Lausanne, Vaud, Switzerland.
Optical Society of America, United States
Distinctions

Award

2023 Best Student paper presentation award at SPIE Optics+Optoelectronics International Symposia held 24-27 April 2023 in Prague, Czech Republic, for the contribution "Tun- ing bimetallic Au@Ag nanorods localized surface plasmon resonance on side-polished opti
SPIE, United States
2023 Best Oral Communication in the Symposium on Engineering Physics of the Doctoral Congress in Engineering (DCE23). Between the 15th and 16th of June, at the Faculty of Engineering, University of Porto.
Universidade do Porto Faculdade de Engenharia, Portugal
2023 SPOF Best poster prize at INL GLOBAL-LOCAL PHOTONICS MEETUP November 13-14, 2024, INL, Braga, Portugal for the work: “Tuning complex plasmonic Au@Ag nanorods on optical fibers for enhanced sensitivity at NIR wavelengths”
SOCIEDADE PORTUGUESA DE ÓPTICA E FOTÓNICA, Portugal
2022 Best Talk award: in recognition of contributing “Strongly coupled plasmonic systems on optical fiber sensors” at The 5th International Conference on Application of Optics and Photonics on 18-22 July 2022, Guimarães, Portugal
SOCIEDADE PORTUGUESA DE ÓPTICA E FOTÓNICA, Portugal
2022 Best talk award: in recognition for the best oral presentation with "Nanoparticles for Enhanced Plasmonic Sensing at NIR" at PRODEF day, 11 November 2022, Porto, Por- tugal
Universidade do Porto Faculdade de Engenharia, Portugal