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Utilization of nanostructured surfaces for sensing applications and the use of nanoentities for the fabrication of new materials

Hamlett, Christopher A. E. (2008)
Ph.D. thesis, University of Birmingham.

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Abstract

The application of nanoscience in various scientific fields is introduced in Chapter 1 by outlining some of the major drivers of this rapidly evolving field. Methods of nanoscale fabrication, utilizing both 'top-down' and 'bottom-up' approaches, are also introduced in this chapter. Nanoscale characterization techniques that allow the visualization of the 'nanoworld' are introduced in Chapter 2. Chapter 3 is concerned with the modification of Si\(_3\)N\(_4\) substrates with self-assembled monolayers (SAMs) of 3-aminopropyltrimethoxysilane (APTMS) via a vapour deposition method. This investigation was carried out by forming APTMS SAMs, from the solution phase, on both SiO\(_2\) and Si\(_3\)N\(_4\) substrates and comparing them to provide a model with which to compare SAMs formed by a novel vapour phase methodology. Chapter 4 further develops the work from Chapter 3 by chemically modifying Si\(_3\)N\(_4\) resonators with APTMS SAMs via vapour deposition. The chemically modified resonators were then used for the mass detection of citrate passivated Au nanoparticles and the results were compared to AFM and XPS studies of the same system but on planar substrates. Chapter 5 is concerned with the fabrication of a bioarray for the patterned immobilization of human spermatozoa cells. Such arrays would allow for the investigation of specific individual sperm cells. This could have a use in the field of artificial insemination. Chapter 6 utilizes citrate passivated Au nanoparticles to prepare composite PEO/Au nanoparticle solutions for the formation of sub-micron diameter electrospinning. Such fibres are electrospun from solutions of 4 different concentrations of PEO and then subsequently characterized by optical microscopy, AFM, TEM and DSC.

Type of Work:Ph.D. thesis.
Supervisor(s):Preece, Jon Andrew
School/Faculty:Colleges (2008 onwards) > College of Engineering & Physical Sciences
Department:Chemistry
Keywords:Self-assembled monolayers, Silicon nitride, Surface chemistry, Chemically patterned surfaces, Electrospinning, Nanoparticles
Subjects:QD Chemistry
Institution:University of Birmingham
Library Catalogue:Check for printed version of this thesis
ID Code:180
This unpublished thesis/dissertation is copyright of the author and/or third parties. The intellectual property rights of the author or third parties in respect of this work are as defined by The Copyright Designs and Patents Act 1988 or as modified by any successor legislation. Any use made of information contained in this thesis/dissertation must be in accordance with that legislation and must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the permission of the copyright holder.
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