Browsing by Subject "Photonics"
Now showing items 1-11 of 11
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Dependence of Photocurrent Enhancements in Quantum Dot (QD)-Sensitized MoS2 Devices on MoS2 Film Properties
(2018)This report demonstrates highly efficient nonradiative energy transfer (NRET) from alloyed CdSeS/ZnS semiconductor nanocrystal quantum dots (QDs) to MoS2 films of varying layer thicknesses, including pristine monolayers, ... -
Development of Stimuli-responsive Materials for Direct Laser Writing for the Realisation of Microactuators
(Trinity College Dublin. School of Chemistry. Discipline of Chemistry, 2024)Two-photon polymerisation (2PP) is a laser-based fabrication technology which can be used to fabricate complex 3D microstructures with feature sizes ~100 nm. This thesis assesses the state of the art in 2PP and presents ... -
Direct laser writing of vapour-responsive photonic arrays
(2021)Using direct laser writing, arrays of optically responsive ionogel structures were fabricated. To demonstrate their responsive nature, visible colour changes in the presence of different solvent vapours were investigated. ... -
Fabrication Technology of Heterojunctions in the Lattice of a 2D Photonic Crystal Based on Macroporous Silicon
(2011)Design and fabrication technology of a microcavity structure based on a double heterojunction in macroporous silicon is suggested. The fabrication process of a strip of a 2D photonic crystal constituted by a finite number ... -
Feature issue introduction: nanocarbon for photonics and optoelectronics
(Optical Society of America, 2012)Nanocarbons possess a variety of nearly ideal, low-dimensional nanostructures that cause them to attain unique electronic and optical properties. Recent linear and nonlinear spectroscopic and optoelectronic results prove ... -
FRET in self-assembled CdTe quantum dot nanoclusters
(IEEE Computer Society Press, 2010)Colloidal CdTe quantum dots (QDs) with oppositely charged ligand shells were used to form quantum dot nanoclusters in solution. The signatures of Forster non-radiative energy transfer in the photoluminescence and time-resolved ... -
Methane Sensing with a Novel Micromachined. Single-Frequency Fabry?Perot Laser Diode. Emitting at 1331 nm.
(1997)Spectroscopic-based gas sensing is demonstrated using micromachined single-frequency Fabry-Perot (FP) laser diodes emitting at 1.331 ?m with a side mode suppression ratio of greater than 24 dB over a significant emission ... -
Nonlinear Optical Properties of Graphene and Carbon Nanotube Composites
(InTech Europe, 2011)The rapid development of nanoscience and nanotechnology provides lots of new opportunities for nonlinear optics. A growing number of nanomaterials have been shown to possess remarkable nonlinear optical (NLO) properties, ... -
Optics In Ireland
(Optical Society of America, 2018)This feature issue provides a snapshot of some of the applied optics and photonics related research and development activities currently taking place across Ireland. The issue contains some thirty papers, including ... -
Topological photonics with anisotropic materials
(Trinity College Dublin. School of Physics. Discipline of Physics, 2020)In this thesis we investigate several aspects of the topological characterisation of light propagating through matter, or topological photonics. Throughout we will focus on anisotropic dielectrics in which the optical ...