• Reduction of threading dislocation density in top-down fabricated GaN nanocolumns via their lateral overgrowth by MOCVD 

  Zubialevich, Vitaly Z.; McLaren, Mathew; Pampili, Pietro; Shen, John; Arredondo-Arechavala, Miryam; Parbrook, Peter J. (AIP Publishing, 2020-01-13)

  Reduction of threading dislocation density in top-down fabricated GaN nanocolumns (NCs) via their successive lateral shrinkage by anisotropic wet etch and lateral overgrowth by metalorganic chemical vapor deposition is ...
• Analyzing the vulnerability of wireless sensor networks to a malicious matched protocol attack 

  O'Mahony, George D.; Harris, Philip J.; Murphy, Colin C. (Institute of Electrical and Electronics Engineers (IEEE), 2018-10)

  Safety critical, Internet of Things (IoT) and space-based applications have recently begun to adopt wireless networks based on commercial off the shelf (COTS) devices and standardized protocols, which inherently establishes ...
• Developing low-cost testbeds for enhancing security techniques in wireless sensor network protocols 

  O'Mahony, George D.; Harris, Philip J.; Murphy, Colin C. (Institute of Electrical and Electronics Engineers (IEEE), 2019-06)

  Wireless sensor network (WSN) applications have expanded considerably over the past decade or so and now, solutions exit for various innovative applications. These wireless networks adopt commercial off the shelf devices ...
• Investigating the prevalent security techniques in wireless sensor network protocols 

  O'Mahony, George D.; Harris, Philip J.; Murphy, Colin D. (Institute of Electrical and Electronics Engineers (IEEE), 2019-06)

  The radio architectures of and protocols used by wireless sensor networks (WSNs) are, typically, very similar and are based on IEEE 802.15.4. By concentrating on this standard and the associated employed security techniques, ...
• Contributions to the modeling of the incremental optical encoder and speed estimation methods for motion control 

  Vazquez-Gutierrez, Yeny (University College Cork, 2019)

  This work studies the incremental optical encoder sensor and its impact on motor motion. The small-signal model of the sensor combined with the chosen speed estimation method is derived, experimentally validated and compared ...

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