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Development of a Clinical Interface for a Novel Newborn Resuscitation Device: Human Factors Approach to Understanding Cognitive User Requirements (2019)
Journal Article
Hayes-Gill, B., & Pickup, L. (2019). Development of a Clinical Interface for a Novel Newborn Resuscitation Device: Human Factors Approach to Understanding Cognitive User Requirements. JMIR Human Factors, 6(2), Article e12055. https://doi.org/10.2196/12055

Background A novel medical device has been developed to address an unmet need in standardising and facilitating heart rate recording during neonatal resuscitation. In a time critical emergency resuscitation, where failure can mean death of an infant... Read More about Development of a Clinical Interface for a Novel Newborn Resuscitation Device: Human Factors Approach to Understanding Cognitive User Requirements.

The development of a clinical interface for a novel newborn resuscitation device; a Human Factors approach to understand cognitive user requirements (2018)
Working Paper
Pickup, L., Lang, A., Shipley, L., Henry, C., Carpenter, J., McCartney, D., …Sharkey, D. The development of a clinical interface for a novel newborn resuscitation device; a Human Factors approach to understand cognitive user requirements

Background: A novel medical device has been developed to address an unmet need of standardizing and facilitating heart rate recording during neonatal resuscitation. In a time-critical emergency resuscitation, where failure can mean death of an in... Read More about The development of a clinical interface for a novel newborn resuscitation device; a Human Factors approach to understand cognitive user requirements.

Polymeric optical fibre sensor coated by SiO2 nanoparticles for humidity sensing in the skin microenvironment (2017)
Journal Article
Gomez, D., Morgan, S. P., Hayes-Gill, B. R., Correia, R., & Korposh, S. (2018). Polymeric optical fibre sensor coated by SiO2 nanoparticles for humidity sensing in the skin microenvironment. Sensors and Actuators B: Chemical, 254, 887-895. https://doi.org/10.1016/j.snb.2017.07.191

The sensitivity of a low-cost polymeric optical fibre humidity sensor based on transmittance changes due to evanescent wave absorption is reported using test measurements in an environmental chamber and of the skin. The layer-by-layer method was used... Read More about Polymeric optical fibre sensor coated by SiO2 nanoparticles for humidity sensing in the skin microenvironment.

Circadian changes and sex-related differences in fetal heart rate parameters (2016)
Journal Article
Kapaya, H., Broughton Pipkin, F., Hayes-Gill, B., & Loughna, P. V. (2016). Circadian changes and sex-related differences in fetal heart rate parameters. Maternal Health, Neonatology and Perinatology, 2(1), https://doi.org/10.1186/s40748-016-0037-6

BACKGROUND: Previous researchers have studied circadian changes in the fetal heart rate (FHR) on small sample sizes and in a strictly controlled environment. This study was undertaken to investigate these changes during the late second and third trim... Read More about Circadian changes and sex-related differences in fetal heart rate parameters.

Highly sensitive contact pressure measurements using FBG patch in endotracheal tube cuff (2016)
Journal Article
Correia, R., Blackman, O. R., Hernandez, F. U., Korposh, S., Morgan, S. P., Hayes-Gill, B. R., …Norris, A. (2016). Highly sensitive contact pressure measurements using FBG patch in endotracheal tube cuff. Proceedings of SPIE, 9916, Article 99161F. https://doi.org/10.1117/12.2236859

A method for measuring the contact pressure between an endotracheal tube cuff and the trachea was designed and developed by using a fibre Bragg grating (FBG) based optical fibre sensor. The FBG sensor is encased in an epoxy based UV-cured cuboid patc... Read More about Highly sensitive contact pressure measurements using FBG patch in endotracheal tube cuff.

Simultaneous temperature and humidity measurements in a mechanical ventilator using an optical fibre sensor (2016)
Journal Article
Hernandez, F., Correia, R., Morgan, S., Hayes-Gill, B., Evans, D., Sinha, R., …Korposh, S. (2016). Simultaneous temperature and humidity measurements in a mechanical ventilator using an optical fibre sensor. Proceedings of SPIE, 9916, Article 99160C. https://doi.org/10.1117/12.2236850

An optical fibre sensor for simultaneous temperature and humidity measurements consisting of one fibre Bragg grating (FBG) to measure temperature and a mesoporous film of bilayers of Poly(allylamine hydrochloride)(PAH) and silica (SiO2) nanoparticles... Read More about Simultaneous temperature and humidity measurements in a mechanical ventilator using an optical fibre sensor.

Motion limitations of non-contact photoplethysmography due to the optical and topological properties of skin (2016)
Journal Article
Butler, M. J., Crowe, J. A., Hayes-Gill, B. R., & Rodmell, P. I. (2016). Motion limitations of non-contact photoplethysmography due to the optical and topological properties of skin. Physiological Measurement, 37(5), N27-N37. https://doi.org/10.1088/0967-3334/37/5/N27

Non-contact photoplethysmography (PPG) provides multiple benefits over in-contact methods, but is not as tolerant to motion due to the lack of mechanical coupling between the subject and sensor. One limitation of non-contact photoplethysmography is... Read More about Motion limitations of non-contact photoplethysmography due to the optical and topological properties of skin.

Comparison of laser Doppler and laser speckle contrast imaging using a concurrent processing system (2016)
Journal Article
Sun, S., Hayes-Gill, B. R., He, D., Zhu, Y., Huynh, N. T., & Morgan, S. P. (2016). Comparison of laser Doppler and laser speckle contrast imaging using a concurrent processing system. Optics and Lasers in Engineering, 83, https://doi.org/10.1016/j.optlaseng.2016.02.021

Full field laser Doppler imaging (LDI) and single exposure laser speckle contrast imaging (LSCI) are directly compared using a novel instrument which can concurrently image blood flow using both LDI and LSCI signal processing. Incorporating a commerc... Read More about Comparison of laser Doppler and laser speckle contrast imaging using a concurrent processing system.

Characterization and use of a fiber optic sensor based on PAH/SiO2 film for humidity sensing in ventilator care equipment (2016)
Journal Article
Hernandez, F. U., Morgan, S. P., Hayes-Gill, B. R., Harvey, D., Kinnear, W., Norris, A., …Korposh, S. (2016). Characterization and use of a fiber optic sensor based on PAH/SiO2 film for humidity sensing in ventilator care equipment. IEEE Transactions on Biomedical Engineering, 63(9), 1985-1992. https://doi.org/10.1109/TBME.2016.2521662

Objective: To develop a compact probe that can be used to monitor humidity in ventilator care equipment. A mesoporous film of alternate layers of Poly(allylamine hydrochloride) (PAH) and silica (SiO2) nanoparticles (bilayers), deposited onto an optic... Read More about Characterization and use of a fiber optic sensor based on PAH/SiO2 film for humidity sensing in ventilator care equipment.

An automated quasi-continuous capillary refill timing device (2015)
Journal Article
Blaxter, L., Morris, D. E., Crowe, J. A., Henry, C., Hill, S. J., Sharkey, D., …Hayes-Gill, B. R. (in press). An automated quasi-continuous capillary refill timing device. Physiological Measurement, 37(1), https://doi.org/10.1088/0967-3334/37/1/83

Capillary refill time (CRT) is a simple means of cardiovascular assessment which is widely used in clinical care. Currently, CRT is measured through manual assessment of the time taken for skin tone to return to normal colour following blanching of t... Read More about An automated quasi-continuous capillary refill timing device.

Multi-exposure laser speckle contrast imaging using a high frame rate CMOS sensor with a field programmable gate array (2015)
Journal Article
Sun, S., Hayes-Gill, B. R., He, D., Zhu, Y., & Morgan, S. P. (2015). Multi-exposure laser speckle contrast imaging using a high frame rate CMOS sensor with a field programmable gate array. Optics Letters, 40(20), https://doi.org/10.1364/OL.40.004587

A system has been developed in which multi-exposure Laser Speckle Contrast Imaging (LSCI) is implemented using a high frame rate CMOS imaging sensor chip. Processing is performed using a Field Programmable Gate Array (FPGA). The system allows differe... Read More about Multi-exposure laser speckle contrast imaging using a high frame rate CMOS sensor with a field programmable gate array.

A single-chip CMOS pulse oximeter with on-chip lock-in detection (2015)
Journal Article
He, D., Morgan, S. P., Trachanis, D., van Hese, J., Drogoudis, D., Fummi, F., …Hayes-Gill, B. R. (2015). A single-chip CMOS pulse oximeter with on-chip lock-in detection. Sensors, 15(7), 17076-17088. https://doi.org/10.3390/s150717076

Pulse oximetry is a noninvasive and continuous method for monitoring the blood oxygen saturation level. This paper presents the design and testing of a single-chip pulse oximeter fabricated in a 0.35 µm CMOS process. The chip includes photodiode, tra... Read More about A single-chip CMOS pulse oximeter with on-chip lock-in detection.

Performance of a condensed electrode patch compared to a diffuse electrode array for transabdominal fetal heart rate and uterine contraction monitoring: a preliminary report (2015)
Journal Article
Hayes-Gill, B. (2015). Performance of a condensed electrode patch compared to a diffuse electrode array for transabdominal fetal heart rate and uterine contraction monitoring: a preliminary report. American Journal of Clinical and Experimental Obstetrics and Gynecology, 2(3), 89-95

Objective: Intrapartum monitoring of the fetal heart rate (FHR), maternal heart rate (MHR) and uterine activity (UA) can be done noninvasively via adhesive electrodes on the parturient’s abdominal surface. This approach, requiring multiple electrodes... Read More about Performance of a condensed electrode patch compared to a diffuse electrode array for transabdominal fetal heart rate and uterine contraction monitoring: a preliminary report.

Forehead reflectance photoplethysmography to monitor heart rate: preliminary results from neonatal patients (2014)
Journal Article
Grubb, M., Carpenter, J., Crowe, J. A., Teoh, J., Marlow, N., Ward, C., …Hayes-Gill, B. R. (2014). Forehead reflectance photoplethysmography to monitor heart rate: preliminary results from neonatal patients. Physiological Measurement, 35(5), https://doi.org/10.1088/0967-3334/35/5/881

Around 5%–10% of newborn babies require some form of resuscitation at birth and heart rate (HR) is the best guide of efficacy. We report the development and first trial of a device that continuously monitors neonatal HR, with a view to deployment in... Read More about Forehead reflectance photoplethysmography to monitor heart rate: preliminary results from neonatal patients.

Marked variation in newborn resuscitation practice: a national survey in the UK (2012)
Journal Article
Mann, C., Ward, C., Grubb, M., Hayes-Gill, B., Crowe, J., Marlow, N., & Sharkey, D. (2012). Marked variation in newborn resuscitation practice: a national survey in the UK. Resuscitation, 83(5), https://doi.org/10.1016/j.resuscitation.2012.01.002

Abstract Background Although international newborn resuscitation guidance has been in force for some time, there are no UK data on current newborn resuscitation practices. Objective Establish delivery room (DR) resuscitation practices in the UK... Read More about Marked variation in newborn resuscitation practice: a national survey in the UK.

CMOS sensors for imaging blood flow (2010)
Journal Article
Morgan, S., Hayes-Gill, B., & Crowe, J. (2010). CMOS sensors for imaging blood flow. Optics and Photonics News, 21(1), 32-37. https://doi.org/10.1364/OPN.21.1.000032

Smart CMOS sensors can extract parameters of interest from incoming signals at the sensor and therefore overcome the data bottleneck between sensor and processor. This enables full-field laser Doppler blood flow imaging to be obtained at a frame rate... Read More about CMOS sensors for imaging blood flow.

The design and characterisation of an optical VLSI processor for real time centroid detection (2002)
Journal Article
Pui, B. H., Hayes-Gill, B., Clark, M., Somekh, M., See, C., Piéri, J. F., …Ng, A. (2002). The design and characterisation of an optical VLSI processor for real time centroid detection. Analog Integrated Circuits and Signal Processing, 32(1), 67-75. https://doi.org/10.1023/A%3A1016075825331

The integration of photo-detectors onto a standard CMOS integrated circuit is presented. This device provides the optical front end for a real time centroid detection system to be used as part of a larger system for implementing a Shack-Hartmann wave... Read More about The design and characterisation of an optical VLSI processor for real time centroid detection.

The Design of a Real Time VLSI Optical Centroid Processor (2002)
Conference Proceeding
Pui, B. H., Hayes-Gill, B., Clark, M., Somekh, M., See, C., Morgan, S., & Ng, A. (2002). The Design of a Real Time VLSI Optical Centroid Processor. In IEEE Sensors 2002 : first IEEE International Conference on Sensors. https://doi.org/10.1109/ICSENS.2002.1036977

A real time VLSI optical centroid processor has been developed as part of a larger Shack-Hartmann wavefront sensor system for applications in adaptive optics. The implementation of the optical centroid detection system was demonstrated successfully u... Read More about The Design of a Real Time VLSI Optical Centroid Processor.