The work described herein has explored solid-phase transduction of nucleic acid hybridization on platforms composed of paper substrates, and also glass surfaces within glass/polydimethylsiloxane microfluidic channels. Single-stranded probe oligonucleotides were conjugated to qua…
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The environmental, microbiological and technological aspects of selenium is explored with the aim of assessing and identifying microorganisms capable of interacting with Se in the environment and forming functional 'bionanomaterials'. To determine the natural microbial response …
Nano-emitters are the new generation of laser devices. A photonic-crystal cavity, which highly confines light in small volumes, in combination with quantum-dots can enhance the efficiency and lower the threshold of this device. The practical realisation of a reliable, electrical…
Quantum dots (QDs) are a semiconductor nanostructure in which a small island of one type of semiconductor material is contained within a larger bulk of a different one. These structure are interesting for a wide range of applications, including highly efficient LASERs, high-dens…
In recent years, interest has grown in the research fields of semiconductor lasers and photonic crystals. This thesis looks at integrating photonic crystals into existing semiconductor laser technology to act as functional laser mirrors. The majority of the research is conducted…
In this thesis, novel regimes of mode locking in quantum dot semiconductor laser diodes have been investigated by exploiting the unique features offered by quantum dots. Using an unconventional approach, the role of excited state transitions in the quantum dots was exploited as …
This thesis presents studies of noise and phase in a Quantum dot (QD). While shot noise measurements revealed the need to go beyond the constant interaction model and provided evidence for two-electron correlations in the Kondo regime, phase and dephasing measurements demonstrat…
Nanostructures have become an important field of study in the past few years for their interesting physical characteristics due to features' size and quantum confinement, which have added new potential applications to the scope of electrical and optical devices. Quantum dots (QD…
This thesis research focuses on developing a hybrid form of solar cell based on zinc(hydr)oxide and its composites with graphite oxide, TiO 2 , quantum dot, electrolyte and this work expands upon the Gratzel solar cell with a dye in TiO2 . Due to various structural and optical c…
Semiconductor nanocrystals have great interest due to their unique optical properties such as the particle size and the alloy composition dependent spectra, photochemical and colloidal stability. They have wide range of potential applications like solar cells, light emitting dio…