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Academic Career Length
18Years (2009-Present)
(Calculated once Scilit publication data is synced: current year − year of first publication + 1)
Representative Publications
View All Publications1 August 2021 in Optics & Laser Technology
Journal Article
RMRui Min
Rui Min
Zhengyong Liu
Luís PereiraCYChenkun Yang
Chenkun Yang
QSQi Sui
Qi Sui
Carlos Marques10 December 2018 in Journal of Lightwave Technology
Journal Article
CBChristian Broadway
Christian BroadwayRMRui Min
Rui Min
Arnaldo Leal-JuniorCarlos Marques
Christophe CaucheteurInterest in polymer optical fiber Bragg gratings (POFBGs) arises from the different material properties and sensing modalities brought by polymers relative to silica. Polymer fibers typically offer twice the sensitivity to temperature of conventional silica fiber and increased sensitivity to strain overall. In addition, polymer fibers have higher elastic limits and as a result a larger range of operation for physical constraints. While some polymers are effectively humidity insensitive, others present inherent humidity sensitivity. Their organic properties also allow a variety of chemical processes to create (bio)chemical sensors, with the consequences of fiber breakage in situ being less hazardous than silica. These attributes have led to the use of POFBGs for applications that remain complex using silica fibers. This review article covers the progress towards commercialization and the increasing number of specific applications.
Journal Article
Arnaldo Leal-Junior
Camilo Arturo Rodríguez DíazLALeticia Avellar
Leticia Avellar
Maria Jose PontesCarlos MarquesANAnselmo Frizera Neto
Anselmo Frizera NetoAdvances in medicine and improvements in life quality has led to an increase in the life expectancy of the general population. An ageing world population have placed demands on the use of assistive technology and, in particular, towards novel healthcare devices and sensors. Besides the electromagnetic field immunity, polymer optical fiber (POF) sensors have additional advantages due to their material features such as high flexibility, lower Young’s modulus (enabling high sensitivity for mechanical parameters), higher elastic limits, and impact resistance. Such advantages are well-aligned with the instrumentation requirements of many healthcare devices and in movement analysis. Aiming at these advantages, this review paper presents the state-of-the-art developments of POF sensors for healthcare applications. A plethora of healthcare applications are discussed, which include movement analysis, physiological parameters monitoring, instrumented insoles, as well as instrumentation of healthcare robotic devices such as exoskeletons, smart walkers, actuators, prostheses, and orthosis. This review paper shows the feasibility of using POF sensors in healthcare applications and, due to the aforementioned advantages, it is possible to envisage a further widespread use of such sensors in this research field in the next few years.
Journal Article
Nélia Alberto
Maria de Fátima DominguesCarlos MarquesPAPaulo Andre
Paulo Andre
Paulo AntunesMagnetic field sensing is an important issue for many application areas, such as in the military, industry and navigation. The current sensors used to monitor this parameter can be susceptible to electromagnetic interferences, however due to their advantages over the traditional sensors, the optical fiber devices could be an excellent alternative. Furthermore, magnetic fluid (MF) is a new type of functional material which possesses outstanding properties, including Faraday effect, birefringence, tunable refractive index and field dependent transmission. In this paper, the optical fiber magnetic field sensors using MF as sensing element are reviewed. Due to the extensive literature, only the most used sensing configurations are addressed and discussed, which include optical fiber grating, interferometry, surface plasmon resonance (SPR) and other schemes involving tailored (etched, tapered and U-shaped) fibers.
9 November 2020 in Journal of Lightwave Technology
Journal Article
Santosh KumarZGZhu Guo
Zhu Guo
Ragini SinghQWQinglin Wang
Qinglin Wang
BZBingyuan Zhang
Bingyuan ZhangRJRajan Jha
Rajan Jha +4
Present study demonstrates the fiber-optic localized surface plasmon resonance (LSPR) based sensitive biosensor for detection of Shigella bacterial species. The proposed sensor is comprised of multi-core fiber (MCF) having seven cores arranged in a hexagonal shape and spliced with single-mode fiber (SMF) for efficient detection. An increase in evanescent waves (EWs) and coupling of modes between MCF cores was achieved by etching process in a controlled manner. The etching process also increases the refractive index sensitivity (RIS) of the proposed sensor. Further, coating with nanomaterials like gold nanoparticles (AuNPs) and molybdenum disulfide (MoS 2 ) helps in the excitation of localized plasmons. Here, Shigella specific oligonucleotide probes are used as a recognition element. The results demonstrate that the proposed sensor can successfully and efficiently detect the Shigella bacterial species with high sensitivity. Shigella in the range of 10 - 100 CFU/mL (colony-forming unit/mL) can cause serious intestinal infection and therefore, its detection in this range is critical. The proposed sensor demonstrates a linearity range from 1 to 10 9 CFU/mL with a detection time of 5 min and a limit of detection (LoD) of 1.56 CFU/mL. The proposed sensing methodology can be a potential alternative to the commercially existing ones in the near future.
26 February 2015 in Optics Express
Journal Article
A novel and highly sensitive liquid level sensor based on a polymer optical fiber Bragg grating (POFBG) is experimentally demonstrated. Two different configurations are studied and both configurations show the potential to interrogate liquid level by measuring the strain induced in a POFBG embedded in a silicone rubber diaphragm, which deforms due to hydrostatic pressure variations. The sensor exhibits a highly linear response over the sensing range and a good repeatability. For comparison, a similar sensor using a FBG inscribed in silica fiber is fabricated, which displays a sensitivity that is a factor of 5 smaller than the POFBG. The temperature sensitivity is studied and a novel multi-sensor arrangement proposed which has the potential to provide level readings independent of temperature and the liquid density.
About Me
Expertise on optical fiber sensors and optical devices for optical communications and sensing. He received a Ph.D. degree in Physics Engineering from the UA, Portugal, in 2013. He was a Marie Curie (MC) Fellow in the Aston Institute of Photonics Technologies, Aston University, U.K until March 2016. Currently, he is a Research Scientist in the Physics Department & I3N, University of Aveiro, Aveiro, Portugal. His main interests include optical fiber devices for sensing, integrated optics, low cost interrogation systems, machine learning, data acquisition and optical transmission data. He authored or co-authored 3 books, 6 book chapters, 180+ journal peer-review papers, more than 100 conference papers with emphasis on optical communications, data processing and sensing. According to Google Scholar, journal/conference articles have received 5000+ citations (h-index: 52). He was an organization member of IMOC2019 conference. He was awarded with several awards. He is a regular expert evaluator of international research projects of different countries such as Romania (UEFISCDI agency), Belgium (F.R.S.-FNRS), UK (via Multiply project - Marie Curie actions), Portugal (ANI), Serbia ( Science Fund of the Republic of Serbia, Fond za nauku agency) and Poland (NCN agency). He is a regular TPC member of some conferences of the Optics and Photonics fields, and he is regularly invited as session chairman in some international conferences.