Browsing School of Engineering by Title
Now showing items 2000-2019 of 2975
-
Optical characteristics of ordinary and tunable 1D Si photonic crystals in the mid-infrared range
(2005)Reflection spectra and photonic band gaps (PBGs) for periodic structures consisting of grooved Si infiltrated with nematic liquid crystals (LCs) E7 have been obtained experimentally and by simulation. Periodically grooved ... -
Optical confirmation of biaxial nematic (Nb) phase in a bent-core mesogen
(2009)A bent-core mesogen with different end groups has been studied for different surface conditions in both planar and homeotropic cells using techniques for measuring biaxiality and optical switching. Biaxial nematic phase ... -
Optical properties of diamond films grown by MPCVD method with alternating nanodiamond injection
(Society of Photo-optical Instrumentation Engineers (SPIE), 2005)Transparent polycrystalline diamond films with grain size ranging from a few tens to hundreds of nanometres were prepared on fused silica substrate by Microwave Chemical Plasma Vapour Deposition method (MPCVD). The ... -
Optical properties of grooved silicon structures: theory and experiment
(2011)The reflection spectra of grooved silicon structures consisting of alternating silicon walls and grooves (air channels) with a period of a = 4?6 ?m are studied experimentally and theoretically in the mid-IR spectral range ... -
Optical rotatory power of different phases of an antiferroelectric liquid crystal and implications for models of structure
(American Physical Society, 2001)The investigation of the antiferroelectic liquid crystal (AFLC) was presented. The crystal was found to possess different helical smectic phases identified through a texture under cross-polarizers with a homeotropic alignment ... -
Optical rotatory power, biaxiality and the models of the chiral tilted smectic phases
(2003)Among the chiral tilted smectics, the stable existence has been confirmed in numerous investigations of SmCA*, ~antiferroelectric smectic-CA) SmCF11* (SmCg*), SmCF12* ~antiferroelectric, AF! and SmC* phases. The structures ... -
Optical spectra of two-dimensional photonic crystal bars based on macroporous Si
(2011)Two-dimensional (2D) photonic crystal (PC) bars with 6 and 21 periods were fabricated by simultaneous photoelectrochemical etching of macropores and trenches in a pre-patterned silicon wafer. The structures had square ... -
Optical Study of Platinum-Modified Amorphous Carbon
(Fizika i Tekhnika Poluprovodnikov, 2009)Films of amorphous carbon a-C and a platinum-modified amorphous carbon composite a-C-Pt, produced by magnetron sputtering in a wide range of thicknesses and modifying platinum concentrations in the optimal mode for the ... -
Optimal Control Algorithms for Wave Energy Conversion
(Trinity College Dublin. School of Engineering. Disc of Civil Structural & Environmental Eng, 2022)The aim of this thesis is to design control strategies with the objective of power maximization for point absorber (PA) type of wave energy converter (WEC) devices, considering non-linearities and physical limitations ... -
Optimal exploitation of sparsely localised traffic data for modelling traffic flow in road networks
(2023)Traffic flow data are generally collected using induction loops. Therefore, to capture traffic dynamics along road sections, a very fine mesh of induction loops is required. However, due to their higher cost of installation ... -
Optimal mechanical performance prediction of a sediment-based geopolymer road sub-layer
(2023)One of the major obstacles for the implementation of dredged sediment in the manufacture of concrete is its variable mineralogical properties. However, its use in the manufacture of geopolymer binder as proven to be an ... -
Optimal Real-Time Predictive Control for Maximising the Power-Take-Off Efficiency of the WaveRAM Wave Energy Converter
(Trinity College Dublin. School of Engineering. Disc of Civil Structural & Environmental Eng, 2018)The aim of this thesis is to develop a control strategy for optimising the power-take-off (PTO) efficiency of the newly developed WaveRAM (WRAM) wave energy converter. The three main research streams established to satisfy ... -
Optimal risk-based design of a RC frame under column loss scenario
(2023)Structural systems may be subject to abnormal loads with small probability of occurrence but great intensity, which may lead to local damage, and even loss of loadbearing elements. In this context, it is important to design ... -
Optimal Schemes for Motion Estimation on Colour Image Sequences
(IEEE Computer Society Press, 1997)This paper describes a method for incorporating the chrominance information when estimating the motion in a colour image sequence. It is based on a maximum likelihood formulation of the motion estimation problem which ... -
Optimal transport pricing for Dublin
(PTRC, 1995) -
Optimisation and 3D Printing of Paediatric Stents
(Trinity College Dublin. School of Engineering. Discipline of Mechanical & Manuf. Eng, 2023)Aortic coarctation is a congenital heart defect that occurs 3 per 10,000 live births with a life expectancy of 35 years if left untreated. Stenting is a common treatment method, but devices are not specifically designed ... -
Optimisation of inspection planning for structures
(Trinity College (Dublin, Ireland). Department of Civil, Structural and Environmental Engineering, 2009)The main aim of this thesis was the development of a maintenance management methodology which incorporates two aspects of a structural inspection, i.e. (i) detection of a defect and (ii) sizing of a defect. Markov transition ... -
Optimisation of monopiles supporting offshore wind turbines through advanced numerical modelling of cyclic loading
(Trinity College Dublin. School of Engineering. Disc of Civil Structural & Environmental Eng, 2024)The European Union (EU) has established ambitious renewable energy targets in order to de-carbonise the energy sector. In Ireland, it is estimated that 2.3GW of offshore wind capacity will be installed by 2030 at an estimated ...