Dr RICARDO GONCALVES CORREIA's Outputs (34)

Respiratory Rate Monitoring via a Fibre Bragg Grating-Embedded Respirator Mask with a Wearable Miniature Interrogator (2024)
Journal Article
Limweshasin, N., Castro, I. A., Korposh, S., Morgan, S. P., Hayes-Gill, B. R., Faghy, M. A., & Correia, R. (2024). Respiratory Rate Monitoring via a Fibre Bragg Grating-Embedded Respirator Mask with a Wearable Miniature Interrogator. Sensors, 24(23), Article 7476. https://doi.org/10.3390/s24237476

A respiration rate (RR) monitoring system was created by integrating a Fibre Bragg Grating (FBG) optical fibre sensor into a respirator mask. The system exploits the sensitivity of an FBG to temperature to identify an individual’s RR by measuring air... Read More about Respiratory Rate Monitoring via a Fibre Bragg Grating-Embedded Respirator Mask with a Wearable Miniature Interrogator.

Comparing peripheral limb and forehead vital sign monitoring in newborn infants at birth (2024)
Journal Article
Swamy, S. K. . N., Stockwell, S. J., Liu, C., Henry, C., Shipley, L., Ward, C., Mirahmadi, S., Correia, R., Morgan, S. P., Crowe, J. A., Sharkey, D., & Hayes-Gill, B. R. (2024). Comparing peripheral limb and forehead vital sign monitoring in newborn infants at birth. Pediatric Research, https://doi.org/10.1038/s41390-024-03651-0

Background: To study the feasibility of measuring heart rate (HR) and oxygen saturation (SpO2) on the forehead, during newborn transition at birth, and to compare these measurements with those obtained from the wrist. Methods: Vital signs were measur... Read More about Comparing peripheral limb and forehead vital sign monitoring in newborn infants at birth.

Exploring the Bias: How Skin Colour Influences Oxygen Saturation Readings via Monte Carlo Simulations (2024)
Journal Article
Swamy, S., Liu, C., Correia, R., Hayes-Gill, B., & Morgan, S. (2024). Exploring the Bias: How Skin Colour Influences Oxygen Saturation Readings via Monte Carlo Simulations. Journal of Biomedical Optics, 29(S3), Article S33308. https://doi.org/10.1117/1.JBO.29.S3.S33308

Significance: Understanding the root cause of reported oxygen saturation (SpO2) overestimation in heavily pigmented skin types to devise solutions toward enabling equity in pulse oximeter design.

Aim: To gain theoretical insights into the effect o... Read More about Exploring the Bias: How Skin Colour Influences Oxygen Saturation Readings via Monte Carlo Simulations.

Fabrication and assessment of a bio-inspired synthetic tracheal tissue model for tracheal tube cuff leakage testing (2024)
Journal Article
Agbiki, T., Arm, R., Hewson, D. W., Erdody, S., Norris, A. M., Correia, R., Korposh, S., Hayes-Gill, B. R., Shahidi, A., & Morgan, S. P. (2024). Fabrication and assessment of a bio-inspired synthetic tracheal tissue model for tracheal tube cuff leakage testing. BJA Open, 10, Article 100290. https://doi.org/10.1016/j.bjao.2024.100290

Introduction
Leakage of orogastric secretions past the cuff of a tracheal tube is a contributory factor in ventilator-associated pneumonia. Current bench test methods specified in the International Standard for Anaesthetic and Respiratory Equipment... Read More about Fabrication and assessment of a bio-inspired synthetic tracheal tissue model for tracheal tube cuff leakage testing.

Highly sensitive optical fibre Bragg grating contact pressure sensor embedded in a polymer layer: modelling and experimental validation (2024)
Journal Article
Abeywardena, C., Zhang, Q., Korposh, S., Morgan, S., Bull, S., & Correia, R. (2024). Highly sensitive optical fibre Bragg grating contact pressure sensor embedded in a polymer layer: modelling and experimental validation. Results in Optics, 14, Article 100604. https://doi.org/10.1016/j.rio.2024.100604

This paper discusses mathematical modelling and experimental validation of a highly sensitive optical fibre Bragg grating (FBG) contact pressure sensor developed for healthcare applications. Bare FBGs are not very sensitive to pressure (~ 3x10-3 nm/M... Read More about Highly sensitive optical fibre Bragg grating contact pressure sensor embedded in a polymer layer: modelling and experimental validation.

Long Period Grating Mach–Zehnder Interferometer Based Immunosensor with Temperature and Bulk Refractive Index Compensation (2022)
Journal Article
Wu, P., Liu, L., Morgan, S. P., Correia, R., & Korposh, S. (2022). Long Period Grating Mach–Zehnder Interferometer Based Immunosensor with Temperature and Bulk Refractive Index Compensation. Biosensors, 12(12), Article 1099. https://doi.org/10.3390/bios12121099

A long period grating Mach–Zehnder interferometer (LPGMZI) that consists of two identical long period gratings (LPGs) in a single fibre was developed to measure immunoglobulin M (IgM). The measured spectrum has fringes due to the interference between... Read More about Long Period Grating Mach–Zehnder Interferometer Based Immunosensor with Temperature and Bulk Refractive Index Compensation.

Fibre Bragg Grating Based Interface Pressure Sensor for Compression Therapy (2022)
Journal Article
Bradbury, J. A., Zhang, Q., Hernandez Ledezma, F. U., Correia, R., Korposh, S., Hayes-Gill, B. R., Tamoué, F., Parnham, A., McMaster, S. A., & Morgan, S. P. (2022). Fibre Bragg Grating Based Interface Pressure Sensor for Compression Therapy. Sensors, 22(5), Article 1798. https://doi.org/10.3390/s22051798

Compression therapy is widely used as the gold standard for management of chronic venous insufficiency and venous leg ulcers, and the amount of pressure applied during the compression therapy is crucial in supporting healing. A fibre optic pressure s... Read More about Fibre Bragg Grating Based Interface Pressure Sensor for Compression Therapy.

Intra-tracheal multiplexed sensing of contact pressure and perfusion (2021)
Journal Article
Correia, R., Gadsby, B., Korposh, S., Norris, A. M., Hayes-Gill, B. R., Sinha, R., Hardman, J. G., Gardner, D. S., Talbot, S., Harvey, D., McGlashan, J., & Morgan, S. P. (2022). Intra-tracheal multiplexed sensing of contact pressure and perfusion. Biomedical Optics Express, 13(1), 48-64. https://doi.org/10.1364/BOE.442165

Incorrect endotracheal tube (ETT) cuff inflation pressure causes significant problems for intubated patients. The technical development and first in vivo use of a smart ETT for measurements at the cuff-trachea interface during mechanical ventilation... Read More about Intra-tracheal multiplexed sensing of contact pressure and perfusion.

Localised plasmonic hybridisation mode optical fibre sensing of relative humidity (2021)
Journal Article
Liu, L. L., Korposh, S., Gomez, D., Correia, R., Hayes-Gill, B. R., & Morgan, S. P. (2022). Localised plasmonic hybridisation mode optical fibre sensing of relative humidity. Sensors and Actuators B: Chemical, 353, Article 131157. https://doi.org/10.1016/j.snb.2021.131157

This work reports an optical fibre probe functionalised with ‘cotton-shaped’ gold-silica nanostructures for relative humidity (RH) monitoring. The sensor response utilises the localised surface plasmon resonance (LSPR) of self-assembled nanostructure... Read More about Localised plasmonic hybridisation mode optical fibre sensing of relative humidity.

A single-film fiber optical sensor for simultaneous measurement of carbon dioxide and relative humidity (2021)
Journal Article
Liu, L. L., Morgan, S. P., Correia, R., & Korposh, S. (2022). A single-film fiber optical sensor for simultaneous measurement of carbon dioxide and relative humidity. Optics and Laser Technology, 147, Article 107696. https://doi.org/10.1016/j.optlastec.2021.107696

Colorimetric measurement is a versatile, low-cost method for bio-/chemical sensing and that has importance in biomedical applications. General carbon dioxide (CO2) sensors based on colorimetric change of a pH indicator report only one parameter at a... Read More about A single-film fiber optical sensor for simultaneous measurement of carbon dioxide and relative humidity.

Optical Fibre Sensor for Capillary Refill Time and Contact Pressure Measurements under the Foot (2021)
Journal Article
Ballaji, H. K., Correia, R., Liu, C., Korposh, S., Hayes-Gill, B. R., Musgrove, A., & Morgan, S. P. (2021). Optical Fibre Sensor for Capillary Refill Time and Contact Pressure Measurements under the Foot. Sensors, 21(18), Article 6072. https://doi.org/10.3390/s21186072

Capillary refill time (CRT) refers to the time taken for body tissue to regain its colour after an applied blanching pressure is released. Usually, pressure is manually applied and not measured. Upon release of pressure, simple mental counting is typ... Read More about Optical Fibre Sensor for Capillary Refill Time and Contact Pressure Measurements under the Foot.

Optical fibre Sensor for Simultaneous Temperature and Relative Humidity Measurement: Towards Absolute Humidity Evaluation (2021)
Journal Article
He, C., Korposh, S., Correia, R., Liu, L., Hayes-Gill, B. R., & Morgan, S. P. (2021). Optical fibre Sensor for Simultaneous Temperature and Relative Humidity Measurement: Towards Absolute Humidity Evaluation. Sensors and Actuators B: Chemical, 344, Article 130154. https://doi.org/10.1016/j.snb.2021.130154

Temperature and humidity are essential parameters in monitoring the health of patients in critical care. An optical fibre sensor has been developed for simultaneous measurement of relative humidity (RH) and temperature at a single optical fibre tip b... Read More about Optical fibre Sensor for Simultaneous Temperature and Relative Humidity Measurement: Towards Absolute Humidity Evaluation.

Centrifuge application of fibre Bragg gratings: pile axial loads and wall bending moments (2021)
Journal Article
Song, G., Xu, J., Heron, C. M., Marshall, A. M., Correia, R., & Korposh, S. (2022). Centrifuge application of fibre Bragg gratings: pile axial loads and wall bending moments. International Journal of Physical Modelling in Geotechnics, 22(4), 192-207. https://doi.org/10.1680/jphmg.20.00078

One challenge for geotechnical centrifuge testing of soil-structure interaction problems is the reliable measurement of induced structural strains/forces. This paper presents a novel application of fibre Bragg grating (FBG) sensors for strain measure... Read More about Centrifuge application of fibre Bragg gratings: pile axial loads and wall bending moments.

Non-invasive cuff-less blood pressure estimation using a hybrid deep learning model (2021)
Journal Article
Yang, S., Zhang, Y., Cho, S.-Y., Correia, R., & Morgan, S. P. (2021). Non-invasive cuff-less blood pressure estimation using a hybrid deep learning model. Optical and Quantum Electronics, 53(2), Article 93. https://doi.org/10.1007/s11082-020-02667-0

Conventional blood pressure (BP) measurement methods have different drawbacks such as being invasive, cuff-based or requiring manual operations. There is significant interest in the development of non-invasive, cuff-less and continual BP measurement... Read More about Non-invasive cuff-less blood pressure estimation using a hybrid deep learning model.

Carboxyl-fentanyl detection using optical fibre grating-based sensors functionalised with molecularly imprinted nanoparticles (2021)
Journal Article
Liu, L. L., Grillo, F., Canfarotta, F., Whitcombe, M., Morgan, S. P., Piletsky, S., Correia, R., He, C. Y., Norris, A., & Korposh, S. (2021). Carboxyl-fentanyl detection using optical fibre grating-based sensors functionalised with molecularly imprinted nanoparticles. Biosensors and Bioelectronics, 177, Article 113002. https://doi.org/10.1016/j.bios.2021.113002

Butyrylfentanyl is a new designer drug reported with growing use and related deaths. Routine toxicological analyses of this novel synthetic opioid drug have not been established yet. This work reports a fibre optic sensor that measures carboxyl-fenta... Read More about Carboxyl-fentanyl detection using optical fibre grating-based sensors functionalised with molecularly imprinted nanoparticles.

Development and validation of a novel fibre-optic respiratory rate sensor (FiRRS) integrated in oxygen delivery devices (2021)
Journal Article
Sinha, R., Hernandez, F., He, C., Korposh, S., Correia, R. N. G., Norris, A., Liu, C., Hayes-Gill, B. R., & Morgan, S. P. (2021). Development and validation of a novel fibre-optic respiratory rate sensor (FiRRS) integrated in oxygen delivery devices. Journal of Physics D: Applied Physics, 54(12), Article 124002. https://doi.org/10.1088/1361-6463/abd061

© 2021 The Author(s). Respiratory rate (RR) monitoring provides crucial information on the overall health condition of patients and a reliable, low cost RR monitor for normal hospital inpatient or home use would be of significant benefit. The propose... Read More about Development and validation of a novel fibre-optic respiratory rate sensor (FiRRS) integrated in oxygen delivery devices.

A Textile Sleeve for Monitoring Oxygen Saturation Using Multichannel Optical Fibre Photoplethysmography (2020)
Journal Article
Ballaji, H. K., Correia, R., Korposh, S., Hayes-Gill, B. R., Hernandez, F. U., Salisbury, B., & Morgan, S. P. (2020). A Textile Sleeve for Monitoring Oxygen Saturation Using Multichannel Optical Fibre Photoplethysmography. Sensors, 20(22), Article 6568. https://doi.org/10.3390/s20226568

Textile-based systems are an attractive prospect for wearable technology as they can provide monitoring of key physiological parameters in a comfortable and unobtrusive form. A novel system based on multichannel optical fibre sensor probes integrated... Read More about A Textile Sleeve for Monitoring Oxygen Saturation Using Multichannel Optical Fibre Photoplethysmography.

A U-Shape Fibre-Optic pH Sensor Based on Hydrogen Bonding of Ethyl Cellulose with a Sol-Gel Matrix (2020)
Journal Article
Tang, Z., Gomez, D., He, C., Korposh, S., Morgan, S. P., Correia, R., Hayes-Gill, B., Setchfield, K., & Liu, L. (2021). A U-Shape Fibre-Optic pH Sensor Based on Hydrogen Bonding of Ethyl Cellulose with a Sol-Gel Matrix. Journal of Lightwave Technology, 39(5), 1557-1564. https://doi.org/10.1109/JLT.2020.3034563

© 1983-2012 IEEE. Development of a biocompatible pH sensor is of importance in biomedical applications, particularly for in vivo measurement, providing necessary information for clinical diagnosis and treatment such as chronic wounds and foetal acido... Read More about A U-Shape Fibre-Optic pH Sensor Based on Hydrogen Bonding of Ethyl Cellulose with a Sol-Gel Matrix.

Surface polymer imprinted optical fibre sensor for dose detection of dabrafenib (2020)
Journal Article
He, C., Ledezma, U. H., Gurnani, P., Albelha, T., Thurecht, K. J., Correia, R., Morgan, S. P., Patel, P., Alexander, C., & Korposh, S. (2020). Surface polymer imprinted optical fibre sensor for dose detection of dabrafenib. Analyst, 145(13), 4504-4511. https://doi.org/10.1039/d0an00434k

© 2020 The Royal Society of Chemistry. Dabrafenib is one of the most widely used of the new generation of targeted anti-cancer drugs. However, its therapeutic window varies for different patients and so there is an unmet need for methods to monitor t... Read More about Surface polymer imprinted optical fibre sensor for dose detection of dabrafenib.

Real-Time Humidity Measurement during Sports Activity using Optical Fibre Sensing (2020)
Journal Article
He, C., Korposh, S., Hernandez, F. U., Liu, L., Correia, R., Hayes-Gill, B. R., & Morgan, S. P. (2020). Real-Time Humidity Measurement during Sports Activity using Optical Fibre Sensing. Sensors, 20(7), Article 1904. https://doi.org/10.3390/s20071904

An optical fibre sensor for monitoring relative humidity (RH) changes during exercise is demonstrated. The humidity sensor comprises a tip coating of poly (allylamine hydrochloride) (PAH)/silica nanoparticles (SiO2 NPs) deposited using the layer-by-l... Read More about Real-Time Humidity Measurement during Sports Activity using Optical Fibre Sensing.