Marta Sofia dos Anjos Ferreira

@ua.pt

Universidade de Aveiro

104

Scopus Publications

2311

Scholar Citations

27

Scholar h-index

41

Scholar i10-index

Scopus Publications

  • Thin-wall silica capillary-based multimode interferometer for high-sensitivity refractive index measurement
    Mariline M. Costa, Ana I. Freitas, Jörg Bierlich, Marta S. Ferreira
    Optics Letters, 2026
    A novel, to the best of our knowledge, sensor based on the controlled collapse of the hollow core of a thin-wall silica capillary tube (SCT) spliced between two single-mode fibers is proposed for the monitoring of external liquid refractive index (RI). The conical shape of the splice excites multimodal interference in the cladding of the SCT. For a range of 1.333–1.341 RIU, when isolating the dominant frequencies, a maximum sensitivity of 4421 nm/RIU is achieved, which is an outstanding result for an all-silica-based device in this RI range. The low-cost one‑step fabrication process, in conjunction with the ultrahigh sensitivity, displays remarkable potential for real‑time detection in chemical processing applications, where precise RI monitoring is required.
  • Tunable Hybrid Antiresonance and Mach–Zehnder Interferometer Based on Silica Capillary for Dual-Parameter Sensing
    Mariline M. Costa, Ana I. Freitas, Jörg Bierlich, Marta S. Ferreira
    Photonics, 2026
    An all-silica-based sensor comprising a section of capillary fiber spliced between two singlemode fibers (SMFs) is proposed for the simultaneous measurement of strain and temperature. By intentionally introducing a controlled transversal offset at one of the fusion splice points, core and cladding modes are simultaneously excited in the capillary, enabling the coexistence of two distinct guiding mechanisms within the sensor. The resulting spectral response exhibits two superimposed modulations associated with antiresonance (AR) guidance and a Mach–Zehnder interferometer (MZI). A comprehensive numerical model is developed to describe the interaction between the two mechanisms as a function of the offset. The model is experimentally validated through characterization of the spectral response for increasing offsets, confirming the coexistence and evolution of the AR and MZI components through free spectral range and visibility analysis. The two interference components allow for independent tracking of their wavelength shifts, enabling simultaneous strain and temperature measurements with estimated resolutions of 11.9 με and 0.45 °C, respectively. Owing to the single-element, one-step fabrication process, and the entirely silica-based configuration, the proposed sensor offers a compact and cost-effective solution for localized multiparameter monitoring.
  • Impact of different chitosan concentrations on multimode optical fiber sensors for temperature and relative humidity monitoring
    Tiago Amaral, Ana I Freitas, João M Leça, Marta S Ferreira, Micael Nascimento
    Measurement Science and Technology, 2026
    In this work, we propose a fiber optic modal sensor based on a coreless fiber coated with a thin film of chitosan for monitoring relative humidity (RH) and temperature. The effect of different chitosan concentrations (1.0%, 1.5%, and 2.0%(w/v)) was studied by comparing the obtained sensitivities towards sensor optimization. After performing a temperature characterization, an exponential wavelength shift behavior was found, and two approximately linear regimes were identified. An increase of roughly 5 times in the temperature sensitivity of both regimes was observed with the increase in the chitosan concentration, from 1.0% to 2.0%, resulting in a maximum sensitivity of −304.14 pm °C −1 , corresponding to the 2.0% concentration and the second regime. From the RH characterization, the sensor sensitivity also increases with the chitosan concentration, and a polynomial response of the sensors was found and divided into two linear regimes. A maximum sensitivity of −2308.88 pm/%RH resulted for the 2.0% concentration in the second linear regime, corresponding to an increase of approximately 32 times when comparing with the sensitivity obtained by the 1.0% concentration. From these findings, it was concluded that the chitosan concentration plays a pivotal role in a significant sensor improvement, which may translate into better and more accurate measurements.
  • Quantitative Analysis of Bisphenol A in Commercial Beverages
    Ana I. Freitas, Marta S. Ferreira, José C. Marques
    Molecules, 2026
    Bisphenol A (BPA) is a widely used synthetic compound and a well-known endocrine-disrupting chemical that has been linked to a range of health issues and poses significant public health concern. Despite efforts to regulate its use in food-contact materials, BPA remains a significant food contaminant due to its widespread use and its ability to leach into consumer products. Therefore, it is paramount to continue monitoring this contaminant in the food supply chain. This work aims to assess human exposure by investigating the presence of BPA in beverages, including iced teas, fruit juices, water, and carbonated drinks. The analysis by liquid chromatography coupled with fluorescence detection reveals BPA above the limit of quantification in about 30% of samples, with concentrations ranging from 0.15 to 0.94 ng/mL. The highest detection frequencies are observed in iced teas and canned beverages, while water and glass-bottled drinks have the lowest BPA detection frequencies. In the future, we aim to use the results from this study as a reference to optimize a chitosan-coated optical fiber sensor as a possible alternative for rapid BPA detection. A preliminary test showed that the sensor can discriminate between BPA concentrations of 10–100 µg/mL in a real food matrix.
  • Detection of Bisphenol a by a Chitosan-Coated Microstructured Optical Fiber Sensor
    Ana I. Freitas, Jörg Bierlich, José C. Marques, Marta S. Ferreira
    Photonics, 2026
    Bisphenol A (BPA) is an endocrine disruptor found in food-contact materials and, even at very low concentrations, poses a serious risk to human health. Therefore, its presence in food should be monitored. Optical fiber sensors are a highly advantageous option for detecting chemical contaminants; however, due to the low concentrations at which these compounds are found, the surface needs to be modified to promote interaction with the target compound. In this work, we present an optical fiber sensor incorporating a microstructured fiber that is sensitive to external media and, therefore, to refractive index variations. To increase sensitivity, the sensor was coated with a chitosan film, a polysaccharide with high biosorbent ability that has been proposed as an effective adsorbent for several contaminants, including BPA. The sensor was then characterized by its response to variations in BPA concentration from 0 to 0.1 mg/mL. The chitosan-coated sensor exhibited a sensitivity over three times higher than that of the uncoated sensor, with a resolution of 9.98 × 10−4 mg/mL. Washing assays revealed that, although the coating cannot be fully regenerated, the sensor can be reused without requiring a complex or time-consuming procedure.
  • 3D nanoprinted fiber-interfaced hollow-core waveguides for high-accuracy nanoparticle tracking analysis
    Diana Pereira, Torsten Wieduwilt, Walter Hauswald, Matthias Zeisberger, Marta S. Ferreira, et al.
    Light Science and Applications, 2025
    The integration of functional components into flexible photonic environments is a critical area of research in integrated photonics and is essential for high-precision sensing. This work presents a novel concept of interfacing square-core hollow-core waveguides with commercially available optical fibers using 3D nanoprinting, and demonstrates its practical relevance through a nanoscience-based characterization technique. In detail, this innovative concept results in a monolithic, fully fiber-integrated device with key advantages such as alignment-free operation, high-purity fundamental mode excitation, full polarization control, and a unique handling flexibility. For the first time, the application potential of a fiber-interfaced waveguide in nanoscale analysis is demonstrated by performing nanoparticle-tracking-analysis experiments. These experiments involve the tracking and analysis of individual gold nanospheres diffusing in the hollow core waveguide, enabled by nearly aberration-free imaging, extended observation times, and homogeneous light-line illumination. The study comprehensively covers design strategy, experimental implementation, key principles, optical characterization, and practical applications. The fiber-interfaced hollow-core waveguide concept offers significant potential for applications in bioanalytics, environmental sciences, quantum technologies, optical manipulation, and life sciences. It also paves the way for the development of novel all-fiber devices that exploit enhanced light-matter interaction in a monolithic form suitable for flexible and remote applications.
  • On-Fiber 3D Nanoprinted Antiresonant Hollow-Core Waveguides for Integrated Optofluidics
    Diana Pereira, Torsten Wieduwilt, Marta S. Ferreira, Markus A. Schmidt
    ACS Photonics, 2025
  • Long-Term Stability Evaluation of Optical Fiber Sensors Immersed in LiPF6 Electrolyte
    Lucca C. Matuck, Luís F. B. Fontes, Nuno F. Santos, João L. Pinto, Marta S. Ferreira, et al.
    Batteries and Supercaps, 2025
    Stability tests on silica optical fiber sensors (fiber Bragg gratings) within the lithium–ion battery (LiB) electrolyte are conducted, revealing their robustness over 24 months, only subject to variations in ambient temperature. Recurrent chemical analyses based on scanning electron microscopy and energy‐dispersive X‐ray spectroscopy characterizations demonstrate the formation of deposits (LiPF6 crystals) from electrolyte decomposition in the fiber surfaces over time. However, no silica material degradation is observed. The performance and accuracy of the optical fiber sensors are tested before and after aging, revealing an insignificant variation in their thermal sensitivity, with values within the measurement error. This research demonstrates the durability and the potential of this advanced sensing technology in the field of LiB monitoring, making a substantial contribution to the domain of sustainable energy solutions. It offers invaluable insights for enhancing LiB safety, reliability, and overall performance, ultimately advancing the integration of LiBs within our evolving sustainable energy landscape.
  • On-chip hollow-core waveguides with integrated anti-resonant channels, enabled by 3D nanoprinting
    Diana Pereira, Marta S. Ferreira, Lothar Wondraczek, Markus A. Schmidt
    Optics Express, 2025
    We present a novel on-chip hollow-core waveguide design featuring a three-channel architecture that operates via the anti-resonant effect. The design incorporates symmetrically arranged thin membranes that create an enhanced reflective environment, achieving superior waveguiding performance over conventional approaches. Through numerical simulations and experimental validation using 3D vertical nanoprinting, we demonstrate low optical losses, smooth spectral transmission, and suppression of structure-induced birefringence while additionally revealing an interchannel coupling mechanism arising from the multi-channel architecture. Our findings establish a promising platform for applications in bioanalytics, quantum technologies, and life sciences while offering new possibilities for exploring complex cladding structures in hollow-core fiber design.
  • A Novel Fiber-Optical Fabry–Perot Microtip Sensor for 2-Propanol
    João M. Leça, Paulo Antunes, Florinda M. Costa, António J. S. Teixeira, Marta S. Ferreira
    Sensors, 2025
    2-Propanol in the gaseous phase of clinical samples can serve as a biomarker for disease diagnosis. In this context, a novel fiber-optic Fabry–Perot (FP) interferometric sensor with a microtip structure was developed using the light-guided induced polymerization technique. The optical fiber sensor (OFS) with the best performance, measuring approximately 15 µm in length, exhibited good sensitivity to 2-propanol, with a response of −71.1 ± 2.1 pm/ppm. Additionally, it demonstrated good stability, with a maximum standard deviation of 0.15 nm and an estimated resolution of 3.18 ppm. The good sensitivity and ease of fabrication of this OFS highlight its potential for biomedical applications, particularly in non-invasive disease detection, given the role of 2-propanol as a biomarker for various health conditions.
  • Corrigendum to “Towards smart and secure batteries: Linking pressure and temperature profiles with electrochemical behavior through hybrid optical fiber sensors” [Chem. Eng. J. 500 (2024) 156806] (Chemical Engineering Journal (2024) 500, (S1385894724082974), (10.1016/j.cej.2024.156806))
    Lucca Matuck, João P. Santos, Fábio Freitas, Luís B. Fontes, Jörg Bierlich, et al.
    Chemical Engineering Journal, 2025
  • Pressure and Temperature Sensing with 3D Nanoprinted Structure Integrated on Optical Fiber
    Diana Pereira, Marta S. Ferreira, Markus A. Schmidt
    Proceedings of SPIE the International Society for Optical Engineering, 2025
  • Mind the splice: ultra-high sensitivity refractometer based on thin-wall silica capillary tube
    Mariline Costa, Ana I. Freitas, Jörg Bierlich, Marta S. Ferreira
    Proceedings of SPIE the International Society for Optical Engineering, 2025
  • Hybrid sensor based on a single segment of hollow-core microstructured optical fiber for simultaneous measurement of pressure and temperature
    Carolina Neves, Jörg Bierlich, Micael Nascimento, Marta S. Ferreira
    Proceedings of SPIE the International Society for Optical Engineering, 2025
  • Decoupling temperature and humidity with chitosan-coated tilted FBG sensor
    Tiago Amaral, Ana I. Freitas, João M. Leça, Marta S. Ferreira, Micael S. Nascimento
    Proceedings of SPIE the International Society for Optical Engineering, 2025
  • Fiber-Interfaced Nanoprinted Hollow-Core Waveguide: A Novel Platform for Nanoparticle Tracking
    European Conference on Lasers and Electro Optics Proceedings Conference on Lasers and Electro Optics Europe CLEO Europe 2025 and European Quantum Electronics Conference Eqec 2025, 2025
  • Fiber-Interfaced Nanoprinted Hollow-Core Waveguide: A Novel Platform for Nanoparticle Tracking
    Diana Pereira, Torsten Wieduwilt, Walter Hauswald, Matthias Zeisberger, Marta S. Ferreira, et al.
    2025 Conference on Lasers and Electro Optics Europe and European Quantum Electronics Conference CLEO Europe Eqec 2025, 2025
  • Hybrid Sensor Based on Fabry-Perot Interferometer for the Simultaneous Measurement of Pressure, Temperature, and Curvature
    João P. Santos, Diana Pereira, Raquel Augusto, Jörg Bierlich, Micael Nascimento, et al.
    Journal of Lightwave Technology, 2025
  • Exploring the use of a virtual reference spectrum in the Vernier effect
    Daniela F. Santos, Gil A. Gonçalves, Paula A. Marques, Maria F. Domingues, Paulo F. Antunes, et al.
    Proceedings of SPIE the International Society for Optical Engineering, 2025
  • Towards smart and secure batteries: Linking pressure and temperature profiles with electrochemical behavior through hybrid optical fiber sensors
    Lucca Matuck, João P. Santos, Fábio Freitas, Luís B. Fontes, Jörg Bierlich, et al.
    Chemical Engineering Journal, 2024
  • Spatially Controlled Phase Modulation - Selective Higher-Order Mode Excitation in 3D Nanoprinted on-Chip Hollow-Core Waveguides
    Diana Pereira, Marta S. Ferreira, Matthias Zeisberger, Markus A. Schmidt
    ACS Photonics, 2024
  • Revealing a Correlation between Physical Parameters and Differential Voltage Analysis of a Commercial Li-Ion Battery Based on Fiber Optic Sensors
    Lucca Matuck, Marta S. Ferreira, Micael Nascimento
    Batteries, 2024
  • Simultaneous measurement of refractive index and temperature using a balloon-type optical fiber sensor
    Ana I. Freitas, Diana Pereira, Jörg Bierlich, José C. Marques, Marta S. Ferreira
    Optik, 2024
  • High-sensitivity refractive index multimode fibre sensor based on a silica capillary
    Ana Isabel Freitas, Jörg Bierlich, Marta S. Ferreira
    Proceedings of SPIE the International Society for Optical Engineering, 2024
  • Molecular imprinted polymer-coated optical fiber sensor for the quantification of 2-propanol
    João M. Leça, Mariana C. Oliveira, Marta S. Ferreira
    Proceedings of SPIE the International Society for Optical Engineering, 2024

RECENT SCHOLAR PUBLICATIONS

  • Tunable Hybrid Antiresonance and Mach–Zehnder Interferometer Based on Silica Capillary for Dual-Parameter Sensing
    MM Costa, AI Freitas, J Bierlich, MS Ferreira
    Photonics 13 (4), 333 , 2026
    2026
  • Impact of different chitosan concentrations on multimode optical fiber sensors for temperature and relative humidity monitoring
    T Amaral, AI Freitas, JM Leça, MS Ferreira, M Nascimento
    Measurement Science and Technology 37 (11), 115105 , 2026
    2026
    Citations: 1
  • Quantitative Analysis of Bisphenol A in Commercial Beverages
    AI Freitas, MS Ferreira, JC Marques
    Molecules 31 (5), 805 , 2026
    2026
  • Detection of Bisphenol a by a Chitosan-Coated Microstructured Optical Fiber Sensor
    AI Freitas, J Bierlich, JC Marques, MS Ferreira
    Photonics 13 (1), 3 , 2025
    2025
    Citations: 2
  • Long‐Term Stability Evaluation of Optical Fiber Sensors Immersed in LiPF 6 Electrolyte
    LC Matuck, LFB Fontes, NF Santos, JL Pinto, MS Ferreira, O Raccurt, ...
    Batteries & Supercaps 8 (10), e202500070 , 2025
    2025
    Citations: 2
  • On-Fiber 3D Nanoprinted Antiresonant Hollow-Core Waveguides for Integrated Optofluidics
    D Pereira, T Wieduwilt, MS Ferreira, MA Schmidt
    ACS Photonics 12 (10), 5788-5798 , 2025
    2025
    Citations: 1
  • A novel fiber-integrated nanoprinted hollow-core waveguide for nanoparticle tracking
    D Pereira, MS Ferreira, MA Schmidt
    Research summit 2025-Book of abstracts, 380 , 2025
    2025
  • On-chip hollow-core waveguides with integrated anti-resonant channels, enabled by 3D nanoprinting
    D Pereira, MS Ferreira, L Wondraczek, MA Schmidt
    Optics Express 33 (14), 30136-30148 , 2025
    2025
    Citations: 1
  • Fiber-Interfaced Nanoprinted Hollow-Core Waveguide: A Novel Platform for Nanoparticle Tracking
    D Pereira, T Wieduwilt, W Hauswald, M Zeisberger, MS Ferreira, ...
    The European Conference on Lasers and Electro-Optics, ck_9_3 , 2025
    2025
  • Pressure and temperature sensing with 3D nanoprinted structure integrated on optical fiber
    MD Pereira, MS Ferreira, MA Schmidt
    29th International Conference on Optical Fiber Sensors 13639, 993 , 2025
    2025
  • Decoupling temperature and humidity with chitosan-coated tilted FBG sensor
    MT Amaral, MAI Freitas, JM Leça, MS Ferreira, M Nascimento
    29th International Conference on Optical Fiber Sensors 13639, 1529 , 2025
    2025
    Citations: 2
  • Exploring the use of a virtual reference spectrum in the Vernier effect
    MD Santos, G Gonçalves, PAAP Marques, MF Domingues, P Antunes, ...
    29th International Conference on Optical Fiber Sensors 13639, 401 , 2025
    2025
  • Hybrid sensor based on a single segment of hollow-core microstructured optical fiber for simultaneous measurement of pressure and temperature
    C Neves, J Bierlich, M Nascimento, MS Ferreira
    29th International Conference on Optical Fiber Sensors 13639, 1065-1068 , 2025
    2025
  • Mind the splice: ultra-high-sensitivity refractometer based on thin-wall silica capillary tube
    MM Costa, AI Freitas, J Bierlich, MS Ferreira
    29th International Conference on Optical Fiber Sensors 13639, 1069-1072 , 2025
    2025
  • 3D nanoprinted fiber-interfaced hollow-core waveguides for high-accuracy nanoparticle tracking analysis
    D Pereira, T Wieduwilt, W Hauswald, M Zeisberger, MS Ferreira, ...
    Light: Science & Applications 14 (1), 197 , 2025
    2025
    Citations: 4
  • A Novel Fiber-Optical Fabry–Perot Microtip Sensor for 2-Propanol
    JM Leça, P Antunes, FM Costa, AJS Teixeira, MS Ferreira
    Sensors 25 (7), 2178 , 2025
    2025
    Citations: 1
  • Corrigendum to “Towards smart and secure batteries: Linking pressure and temperature profiles with electrochemical behavior through hybrid optical fiber sensors”[Chem. Eng. J …
    L Matuck, JP Santos, F Freitas, LB Fontes, J Bierlich, S Geniès, JL Pinto, ...
    Chemical Engineering Journal 507, 160523 , 2025
    2025
  • Hybrid Sensor Based on Fabry-Perot Interferometer for the Simultaneous Measurement of Pressure, Temperature, and Curvature
    JP Santos, D Pereira, R Augusto, J Bierlich, M Nascimento, MS Ferreira
    Journal of Lightwave Technology , 2025
    2025
    Citations: 2
  • Towards smart and secure batteries: Linking pressure and temperature profiles with electrochemical behavior through hybrid optical fiber sensors
    L Matuck, JP Santos, F Freitas, LB Fontes, J Bierlich, S Geniès, JL Pinto, ...
    Chemical Engineering Journal 500, 156806 , 2024
    2024
    Citations: 19
  • Revealing a Correlation between Physical Parameters and Differential Voltage Analysis of a Commercial Li-Ion Battery Based on Fiber Optic Sensors
    L Matuck, MS Ferreira, M Nascimento
    Batteries 10 (8), 289 , 2024
    2024
    Citations: 4

MOST CITED SCHOLAR PUBLICATIONS

  • Internal strain and temperature discrimination with optical fiber hybrid sensors in Li-ion batteries
    M Nascimento, S Novais, MS Ding, MS Ferreira, S Koch, S Passerini, ...
    Journal of Power Sources 410, 1-9 , 2019
    2019
    Citations: 234
  • Optical harmonic Vernier effect: A new tool for high performance interferometric fiber sensors
    AD Gomes, MS Ferreira, J Bierlich, J Kobelke, M Rothhardt, H Bartelt, ...
    Sensors 19 (24), 5431 , 2019
    2019
    Citations: 196
  • Real time thermal monitoring of lithium batteries with fiber sensors and thermocouples: A comparative study
    M Nascimento, MS Ferreira, JL Pinto
    Measurement 111, 260-263 , 2017
    2017
    Citations: 167
  • Growth and characterization of Cu2ZnSn (S, Se) 4 thin films for solar cells
    PMP Salomé, J Malaquias, PA Fernandes, MS Ferreira, AF Da Cunha, ...
    Solar Energy Materials and Solar Cells 101, 147-153 , 2012
    2012
    Citations: 139
  • Fabry–Perot cavity based on a diaphragm-free hollow-core silica tube
    MS Ferreira, L Coelho, K Schuster, J Kobelke, JL Santos, O Frazão
    Optics letters 36 (20), 4029-4031 , 2011
    2011
    Citations: 118
  • Towards the control of highly sensitive Fabry-Pérot strain sensor based on hollow-core ring photonic crystal fiber
    MS Ferreira, J Bierlich, J Kobelke, K Schuster, JL Santos, O Frazão
    Optics express 20 (20), 21946-21952 , 2012
    2012
    Citations: 98
  • Hollow microsphere combined with optical harmonic Vernier effect for strain and temperature discrimination
    AD Gomes, MS Ferreira, J Bierlich, J Kobelke, M Rothhardt, H Bartelt, ...
    Optics & Laser Technology 127, 106198 , 2020
    2020
    Citations: 84
  • Temperature fiber sensing of Li-ion batteries under different environmental and operating conditions
    M Nascimento, MS Ferreira, JL Pinto
    Applied Thermal Engineering 149, 1236-1243 , 2019
    2019
    Citations: 70
  • Simultaneous sensing of temperature and Bi-directional strain in a prismatic Li-ion battery
    M Nascimento, MS Ferreira, JL Pinto
    Batteries 4 (2), 23 , 2018
    2018
    Citations: 62
  • Thermal mapping of a lithium polymer batteries pack with FBGs network
    M Nascimento, T Paixão, MS Ferreira, JL Pinto
    Batteries 4 (4), 67 , 2018
    2018
    Citations: 61
  • Optical fiber tip sensor for the measurement of glucose aqueous solutions
    S Novais, CIA Ferreira, MS Ferreira, JL Pinto
    IEEE Photonics Journal 10 (5), 1-9 , 2018
    2018
    Citations: 59
  • Fiber Fabry-Perot interferometer for curvature sensing
    CS Monteiro, MS Ferreira, SO Silva, J Kobelke, K Schuster, J Bierlich, ...
    Photonic Sensors 6 (4), 339-344 , 2016
    2016
    Citations: 55
  • Simultaneous measurement of curvature and strain using a suspended multicore fiber
    RM Silva, MS Ferreira, J Kobelke, K Schuster, O Frazão
    Optics letters 36 (19), 3939-3941 , 2011
    2011
    Citations: 51
  • Determination of thermo-optic coefficient of ethanol-water mixtures with optical fiber tip sensor
    S Novais, MS Ferreira, JL Pinto
    Optical Fiber Technology 45, 276-279 , 2018
    2018
    Citations: 50
  • Fabry-Perot cavity based on silica tube for strain sensing at high temperatures
    MS Ferreira, P Roriz, J Bierlich, J Kobelke, K Wondraczek, C Aichele, ...
    Optics express 23 (12), 16063-16070 , 2015
    2015
    Citations: 50
  • Optical fiber Fabry–Perot tip sensor for detection of water–glycerin mixtures
    S Novais, MS Ferreira, JL Pinto
    Journal of Lightwave Technology 36 (9), 1576-1582 , 2018
    2018
    Citations: 48
  • The influence of hydrogen in the incorporation of Zn during the growth of Cu2ZnSnS4 thin films
    PMP Salomé, J Malaquias, PA Fernandes, MS Ferreira, JP Leitão, ...
    Solar Energy Materials and Solar Cells 95 (12), 3482-3489 , 2011
    2011
    Citations: 48
  • Temperature independent torsion sensor using a high-birefringent Sagnac loop interferometer
    RM Silva, MS Ferreira, O Frazao
    Optics Communications 285 (6), 1167-1170 , 2012
    2012
    Citations: 41
  • Silica microspheres array strain sensor
    MS Ferreira, JL Santos, O Frazão
    Optics letters 39 (20), 5937-5940 , 2014
    2014
    Citations: 36
  • Reliability and NDT methods
    TG Santos, JP Oliveira, MA Machado, PL Inácio, VR Duarte, ...
    Additive Manufacturing Hybrid Processes for Composites Systems, 265-295 , 2020
    2020
    Citations: 35