• Chalcogenide glasses with embedded ZnS nanocrystals: potential mid-infrared laser host for divalent transition metal ions 

  Lu, Xiaosong; Zhang, Yindong; Ren, Jing; Lewis, Elfed; Farrell, Gerald; Yang, Anping; Yang, Zhiyong; Wang, Pengfei (Wiley and Sons Ltd, 2018)

  Chalcogenide glasses (ChGs) containing II ‐VI chalcogenide (ChG) nanocrystals such as ZnS/Se have recently been intensively studied as promising mid‐infrared nonlinear optics and laser materials, yet preparation of pure‐phase ...
• Optical fibre sensors: their role in in vivo dosimetry for prostate cancer radiotherapy 

  Woulfe, Peter; Sullivan, F.J.; O'Keeffe, Sinéad (Springer Open, 2016)

  Review is made of dosimetric studies of current optical fibre technology in radiotherapy for therapeutic applications, focusing particularly on in vivo dosimetry for prostate radiotherapy. We present the various sensor ...
• Novel layered 2D materials for ultrafast photonics 

  Lia, Shi; Wanga, Cong; Yin, Yu; Lewis, Elfed; Wang, Pengfei (De Gruyter, 2020)

  A range of new 2D materials have recently been reported, including topological insulators, transitionmetal dichalcogenides, black phosphorus, MXenes, and metal-organic frameworks, which have demonstrated high optical ...
• Advanced characterization of an optical fibre sensor system based on an MPPC detector for measurement of X-ray radiation in clinical linacs 

  Chen, Lingxia; Ong, Yong Sheng; Chen, Shuilin; O'Keeffe, Sinéad; Gillespie, Sean; Woulfe, Peter; Jiang, Benxue; Grout, Ian; Lewis, Elfed (Elsevier, 2020)

  A reliable, accurate and in-vivo dosimetry system for measuring the radiation dose and profiling the X-ray beam during radiotherapy is reported. Its dynamic range is investigated using an accurately controlled pulsed light ...
• Polarization-insensitive multi-band metamaterial absorber operating in the 5G spectrum 

  Bilal, R.M.H.; Baqir, M.A.; Choudhury, Pankaj Kumar; Ali, Muhammad Mahmood; Rahim, Arbab Abdur; Kamal, W. (Elsevier, 2020)

  A polarization-insensitive multi-band metamaterial absorber comprised of four concentric rectangular rib structures, mounted over a dielectric medium, was investigated. The performance of the absorber was studied under ...
• Differential in vivo urodynamic measurement in a single thin catheter based on two optical fiber pressure sensors 

  Poeggel, Sven; Duraibabu, Dinesh Babu; Tosi, Daniele; Leen, Gabriel; Lews, Elfed; McGrath, Deirdre; Fusco, Ferdinando; Sannino, Simone; Lupoli, Laura; Ippolito, Juliet; Mirone, Vincenzo (SPIE: The International Society for Optics and Photonics, 2015)

  Urodynamic analysis is the predominant method for evaluating dysfunctions in the lower urinary tract. Theexammeasures thepressure duringthefilling andvoidingprocess ofthe bladderandismainlyinterested in the contraction of ...
• Optical fiber sensors-based temperature distribution measurement in ex vivo radiofrequency ablation with submillimeter resolution 

  Macchi, Edoardo Gino; Tosi, Daniele; Braschi, Giovanni; Gallati, Mario; Cigada, Alfredo; Busca, Giorgio; Lewis, Elfed (SPIE: The International Society for Optics and Photonics, 2014)

  Radiofrequency thermal ablation (RFTA) induces a high-temperature field in a biological tissue having steep spatial (up to 6 degrees C/mm) and temporal (up to 1 degrees C/s) gradients. Applied in cancer care, RFTA produces ...
• Neither wasted nor wanted: theorising the failure to dispossess objects of ambiguous value 

  Casey, Katherine; Lichrou, Maria; O'Malley, Lisa; Fitzpatrick, Colin (Association for Consumer Research, 2019)

  Consumer research has traditionally presented the consumption process in three stages – acquisition, consumption and disposition (de Coverly et al. 2008; Jacoby, Berning, and Dietvorst 1977) and it is assumed that consumers ...
• Research 262: A community based social marketing approach for increased participation in WEEE recycling (ColectWEEE) 

  Casey, Katherine; Lichrou, Maria; FItzpatrick,Colin (EPA (Environmental Protection Agency), 2018)

  This study explored human behaviour in relation to small WEEE recycling through 26 in-depth interviews with 30 participants; observations and casual conversations at a civic amenity site and waste collection event; and ...
• Distributed sequential consensus in networks: analysis of partially connected blockchains with uncertainty 

  Prieto-Castrillo, Francisco; Kushch, Sergii; Corchado, Juan Manuel (Hindawi, 2017)

  This work presents a theoretical and numerical analysis of the conditions under which distributed sequential consensus is possible when the state of a portion of nodes in a network is perturbed. Specifically, it examines ...
• Blockchain tree as solution for distributed storage of personal ID data and document access control 

  Kushch, Sergii; Baryshev, Yurii; Ranise, Silvio (MDPI, 2020)

  This paper introduces a new method of Blockchain formation for reliable storage of personal data of ID-card holders. In particular, the model of the information system is presented, the new structure of smart ID-cards and ...
• Optical fiber dosimeter for real-time in-vivo dose monitoring during LDR brachytherapy 

  Woulfe, Peter; Sullivan, F.J.; Kam, Wern; O'Keeffe, Sinéad (Optical Society of America, 2020)

  An optical fiber sensor for monitoring low dose radiation is presented. The sensor, based on radiation sensitive scintillation material, terbium doped gadolinium oxysulphide (Gd2O2S:Tb), is embedded in a cavity of 700μm ...
• Ammonia sensing and a cross sensitivity evaluation with atmosphere gases using optical fiber sensor 

  Manap, Hadi; Muda, Razali; O'Keeffe, Sinéad; Lewis, Elfed (Elsevier, 2009)

  This paper describes an optical fiber sensor for the monitoring of ammonia gas. An open path optical technique is used to analyze the absorption lines of ammonia within the Ultra Violet region. The optical fibre sensor ...
• Experimental rig investigation of a direct interconnection technique for airborne wind energy systems 

  Salari, Mahdi Ebrahimi; Coleman, Joseph; O'Donnell, Cathal; Toal, Daniel (Elsevier, 2020)

  Airborne wind energy is a new approach to reach the stronger and more consistent winds at higher altitudes. In this paper, the interconnection of pumping mode airborne wind energy systems inside an energy farm is investigated. ...
• Detection of high level carbon dioxide emissions using a compact optical fibre based mid-infrared sensor system for applications in environmental pollution monitoring 

  Muda, Razali; Lewis, Elfed; O'Keeffe, Sinéad; Dooly, Gerard; Clifford, John (IOP Publishing, 2009)

  A novel and highly compact optical fibre based sensor system for measurement of high concentrations CO2 gas emissions in modern automotive exhaust is presented. The sensor system works based on the principle of open-path ...
• A multi-wavelength discriminating sensor with a wireless mote interface for aquatic pollution monitoring 

  O'Connell, Eoin; O'Keeffe, Sinéad; Newe, Thomas; Lewis, Elfed; Meere. Damien (Exeley Inc., 2014)

  The system presented in this paper demonstrates how a novel fibre optic based sensing platform, capable of detecting minute changes in the level of impurity in a liquid, can be incorporated onto a Mote based platform ...
• Physiological bending sensor based on tilt angle loss measurement using dual optical fibre 

  Zawawi, Mohd Anwar; O'Keeffe, Sinéad; Lewis, Elfed (Exeley Inc., 2014)

  This paper presents the development of an extrinsic optical fibre sensor for continuous measurement of the human spine bending movement based on intensity modulation technique. Using the investigated sensor configuration, ...
• Underwater image enhancement and mosaicking system based on A-KAZE feature matching 

  Kazerouni, Iman Abaspur; Dooly, Gerard; Toal, Daniel (MDPI, 2020)

  Feature extraction and matching is a key component in image stitching and a critical step in advancing image reconstructions, machine vision and robotic perception algorithms. This paper presents a fast and robust underwater ...
• Realization of NumPy Tensordot using the field programmable gate array for embedded machine learning applications 

  Grout, Ian (IEEE Computer Society, 2020)

  Today, Machine Learning (ML) and Deep Learning (DL) functions are embedded into electronic systems enabling the inclusion of levels of system “intelligence” that otherwise could not be included using non-ML/DL approaches ...
• Simultaneous measurement of displacement and temperature based on a balloon-shaped bent SMF structure incorporating an LPG 

  Tian, Ke; Farrell, Gerald; Yang, Wenlei; Wang, Xianfan; Lewis, Elfed; Wang, Pengfei (IEEE Computer Society, 2018)

  A novel optical fiber sensor based on a balloon-shaped bent single-mode (BSBS) fiber structure incorporating a long-period grating (LPG) for simultaneous measurement of displacement and temperature is described and ...

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