Measurement of viscoelasticity of sodium alginate by Fibre Bragg Grating
Conference Proceeding
Binetti, L., Stankiewicz, A., & Alwis, L. (2019)
Measurement of viscoelasticity of sodium alginate by Fibre Bragg Grating. https://doi.org/10.3390/proceedings2019015033
A novel sensor for measuring viscoelastic properties of sodium alginate (SA) in distilled water of concentration (0.5, 1.0, 1.5, 2.0, 2.5, and 3.0 w/w%) has been tested. The s...
Optical fibre thermometry using ratiometric green emission of an upconverting nanoparticle- polydimethylsiloxane composite
Journal Article
Kumar, R., Binetti, L., Nguyen, .. H., Alwis, L. S., Sun, T., & Grattan, K. T. (2020)
Optical fibre thermometry using ratiometric green emission of an upconverting nanoparticle- polydimethylsiloxane composite. Sensors and Actuators A: Physical, 312, https://doi.org/10.1016/j.sna.2020.112083
The thermally coupled green band emission from excited Er 3+ ions has been used in the past to create optical thermometers, by doping the material in various types of media, p...
Determination of the Aspect-ratio Distribution of Gold Nanorods in a Colloidal Solution using UV-visible absorption spectroscopy
Journal Article
Kumar, R., Binetti, L., Nguyen, H. T., Alwis, L. S. M., Agrawal, A., Sun, T., & Grattan, K. T. V. (2019)
Determination of the Aspect-ratio Distribution of Gold Nanorods in a Colloidal Solution using UV-visible absorption spectroscopy. Scientific Reports, 9, https://doi.org/10.1038/s41598-019-53621-4
Knowledge of the distribution of the aspect ratios (ARs) in a chemically-synthesized colloidal solution of Gold Nano Rods (GNRs) is an important measure in determining the qua...
Graphene-Oxide and Hydrogel Coated FBG-Based pH Sensor for Biomedical Applications
Journal Article
Binetti, L., Stankiewicz, A., & Alwis, L. S. M. (2018)
Graphene-Oxide and Hydrogel Coated FBG-Based pH Sensor for Biomedical Applications. Proceedings, 2(13), 789. https://doi.org/10.3390/proceedings2130789
A hydrogel coated fibre grating-based pH sensor for biomedical applications has been realised, where Graphene Oxide (GO) had been used to enhance the bonding between the coati...
A study of the impact of technology-enhanced learning on student academic performance.
Journal Article
Chowdhry, S., Sieler, K., & Alwis, L. (2014)
A study of the impact of technology-enhanced learning on student academic performance. Journal of Perspectives in Applied Academic Practice, 2,
In university education a lot of emphasis is placed on the use of the virtual learning environment (VLE) in teaching to enhance the student learning experience. As a result, t...
Simultaneous Measurement of Temperature and Relative Humidity Using a Dual-Wavelength Erbium-Doped Fiber Ring Laser Sensor
Journal Article
Mądry, M., Alwis, L., Binetti, L., Pajewski, Ł., & Bereś-Pawlik, E. (2019)
Simultaneous Measurement of Temperature and Relative Humidity Using a Dual-Wavelength Erbium-Doped Fiber Ring Laser Sensor. IEEE Sensors Journal, 19(20), 9215-9220. https://doi.org/10.1109/JSEN.2019.2922041
A fiber ring laser sensor setup utilizing FBGs (Fiber Bragg Gratings) for simultaneous measurement of ambient temperature and relative humidity (RH) is presented. Two FBGs are...
Novel Technique for Meniscus Height Measurement of Liquids Using Optical Fibers
Journal Article
Binetti, L., & Alwis, L. S. M. (2021)
Novel Technique for Meniscus Height Measurement of Liquids Using Optical Fibers. IEEE Sensors Journal, 21(18), 20092-20098. https://doi.org/10.1109/jsen.2021.3100644
A novel technique was designed to measure the meniscus height (MH) of liquids on a standard single mode fiber (SMF) using fiber optics. Once the MH is known, the contact angle...
Optical Fiber-Based Heavy Metal Detection Using the Localized Surface Plasmon Resonance Technique
Journal Article
Dhara, P., Kumar, R., Binetti, L., Nguyen, H. T., Alwis, L. S., Sun, T., & Grattan, K. T. V. (2019)
Optical Fiber-Based Heavy Metal Detection Using the Localized Surface Plasmon Resonance Technique. IEEE Sensors Journal, 19(19), 8720-8726. https://doi.org/10.1109/JSEN.2019.2921701
An innovative, reflection-based localized surface plasmon resonance (LSPR) fiber-optic sensor has been developed and demonstrated to detect the concentration of several heavy ...
Evaluation of Viscosity Dependence of the Critical Meniscus Height with Optical Fiber Sensors
Journal Article
Binetti, L., Simpson, F., & Alwis, L. S. M. (2021)
Evaluation of Viscosity Dependence of the Critical Meniscus Height with Optical Fiber Sensors. Sensors, 21(23), Article 8130. https://doi.org/10.3390/s21238130
Conventional means of data extraction using optical fiber interrogators are not adequate for fast-paced detection of a target parameter. In this instance, the relationship bet...
Optical Fiber Sensor Design for Ground Slope Movement Monitoring for Railway Safety Operations
Conference Proceeding
Hook, D., Laing, W., Kerrouche, A., Barreto Gonzalez, D., & Alwis, L. S. (2018)
Optical Fiber Sensor Design for Ground Slope Movement Monitoring for Railway Safety Operations. In 2018 IEEE Sensors Proceedings. , (1-4). https://doi.org/10.1109/ICSENS.2018.8589835
Scour and slope instability are a major issue in keeping the railway structures safe and operational. Conventional measurement techniques do not allow real-time monitoring of ...