Electrically conducting 1-D nanostructures (100 – 200 nm in diameter, 10-20 microns in length), have high application potential in future electronic devices such as, e.g., transparent backplane field effect transistor (FET) devices and as sensor platforms. However, a critical challenge in the development of future devices based on 1-D nanostructures is the lack of suitable integration techniques for assembly and integration of nanostructures at pre-defined locations on technologically relevant substrates. New combined approaches to fabrication and heterogeneous integration of, e.g., nanowire components are required whereby components may be assembled into multifunctional mesoscopic arrays on active substrates that permit direct connection to each of the components for either selective component addressing or collective read-out of array status.
To address this challenge, this project will explore novel methods for nanostructure fabrication, self-assembly and heterogeneous integration of metallic and metal oxide nanowire arrays at silicon substrates. The morphological characteristics of fabricated nanostructures will be probed using optical and electron microscopy, and scanning probe techniques, e.g., STM and AFM. Following self-assembly and integration of nanostructure-based devices, electronic, and optoelectronic characterisation will be undertaken to demonstrate device functionality.
Applications are invited for a Ph.D. studentship in this field. The student’s work will focus on:
- Fabrication and nano-visualisation of 1-D metallic- and metal oxide-based nanostructures.
- Morphological characterisation of fabricated nanostructures.
- Development of routes for controlled self-assembly and heterogeneous integration of nanostructures within electronic and optoelectronic devices.
- Investigation of electronic and opto-electronic characteristics of the fully integrated nanodevices using low-noise electrical and optoelectronic characterisation techniques.
The successful candidate for this position will have a good undergraduate degree in physics, chemistry, electronic engineering or materials science. Informal enquiries concerning this studentship can be made to Dr. Alan O’Riordan (email: alan.oriordan@tyndall.ie, group webpage: www.tyndall.ie/nanotech).
Application Deadline - 30 April 2008
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