Use this URL to cite or link to this record in EThOS: http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.583193
Title: Structural analysis of self-assembled monolayers on Au(111) and point defects on HOPG
Author: Gao, Jianzhi
Awarding Body: University of Birmingham
Current Institution: University of Birmingham
Date of Award: 2013
Availability of Full Text:
Access from EThOS:
Access from Institution:
Abstract:
In this thesis, I report findings from two projects conducted from Oct. 2009 to Dec. 2012. The first project involves the structural analysis of short-chain alkanethiol self-assembled monolayers (SAMs) on Au(111). Methanethiol, ethanethiol, propanethiol, and methyl-propanethiol monolayers are prepared on the Au(111) surface using vapour deposition. The SAMs are imaged using scanning tunnelling microscopy (STM) and structural transformations are followed as a function of surface coverage. The second project involves the creation and detection of various types of point defects on the surface of graphite with a view to obtain controlled doping in graphene and graphene-related materials. Nitrogen and oxygen are deposited onto HOPG using two different methods. Charged N and N\(_2\) were used from an ion source and shallowly implanted into HOPG. Several types of N were found, including interstitial and substitutional N. Oxygen was deposited as atomic O from a thermal cracking source. We found oxygen bonded to surface carbon atoms in both a top and bridging configurations. We have also investigated the deposition of small PtO particles on HOPG.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID: uk.bl.ethos.583193  DOI: Not available
Keywords: Q Science (General) ; QC Physics
Share: