Alison Downard | |
---|---|
Alma mater | University of Otago |
Awards | Fellow of the Royal Society Te Apārangi, honorary degree from the University of Rennes 1 |
Scientific career | |
Fields | Chemistry |
Institutions | University of Canterbury |
Thesis |
Alison Joy Downard is a New Zealand academic, and has been a full professor at the University of Canterbury since 2009. [1] Her work focuses on surface chemistry, electrochemistry and nanoscale grafted layers.
After a PhD titled Electron transfer reactions of organometallic clusters at the University of Otago, Downard moved to the University of Southampton, followed by a two-year postdoctoral associate position at UNC Chapel Hill from 1986. In 1988, she moved to the University of Canterbury, rising to full professor in 2009. [1] [2]
In 2017, Downard was featured as one of the Royal Society Te Apārangi's 150 women in 150 words. [3]
Downard works as part of the MacDiarmid Institute for Advanced Materials and Nanotechnology. Downard's research on chemical modifications to surfaces at the nanoscale has enabled new electrodes to be discovered. Her findings have implications for energy storage. [1] [3]
In 2014, Downard was awarded the R. H. Stokes medal by the Royal Australian Chemical Institute. [4] The same year she was elected as a Fellow of the Royal Society Te Apārangi, and received an honorary doctorate from the University of Rennes 1. [5] [1]
Scholia has a profile for Alison Downard (Q92413027). |
Self-assembled monolayers (SAM) of organic molecules are molecular assemblies formed spontaneously on surfaces by adsorption and are organized into more or less large ordered domains. In some cases molecules that form the monolayer do not interact strongly with the substrate. This is the case for instance of the two-dimensional supramolecular networks of e.g. perylenetetracarboxylic dianhydride (PTCDA) on gold or of e.g. porphyrins on highly oriented pyrolitic graphite (HOPG). In other cases the molecules possess a head group that has a strong affinity to the substrate and anchors the molecule to it. Such a SAM consisting of a head group, tail and functional end group is depicted in Figure 1. Common head groups include thiols, silanes, phosphonates, etc.
Self-cleaning surfaces are a class of materials with the inherent ability to remove any debris or bacteria from their surfaces in a variety of ways. The self-cleaning functionality of these surfaces are commonly inspired by natural phenomena observed in lotus leaves, gecko feet, and water striders to name a few. The majority of self-cleaning surfaces can be placed into three categories: 1) superhydrophobic, 2) superhydrophilic, and 3) photocatalytic.
Nanoparticle deposition refers to the process of attaching nanoparticles to solid surfaces called substrates to create coatings of nanoparticles. The coatings can have a monolayer or a multilayer and organized or unorganized structure based on the coating method used. Nanoparticles are typically difficult to deposit due to their physical properties.
Liquid marbles are non-stick droplets wrapped by micro- or nano-metrically scaled hydrophobic, colloidal particles ; representing a platform for a diversity of chemical and biological applications. Liquid marbles are also found naturally; aphids convert honeydew droplets into marbles. A variety of non-organic and organic liquids may be converted into liquid marbles. Liquid marbles demonstrate elastic properties and do not coalesce when bounced or pressed lightly. Liquid marbles demonstrate a potential as micro-reactors, micro-containers for growing micro-organisms and cells, micro-fluidics devices, and have even been used in unconventional computing. Liquid marbles remain stable on solid and liquid surfaces. Statics and dynamics of rolling and bouncing of liquid marbles were reported. Liquid marbles coated with poly-disperse and mono-disperse particles have been reported. Liquid marbles are not hermetically coated by solid particles but connected to the gaseous phase. Kinetics of the evaporation of liquid marbles has been investigated.
Electrochemical quartz crystal microbalance (EQCM) is the combination of electrochemistry and quartz crystal microbalance, which was generated in the eighties. Typically, an EQCM device contains an electrochemical cells part and a QCM part. Two electrodes on both sides of the quartz crystal serve two purposes. Firstly, an alternating electric field is generated between the two electrodes for making up the oscillator. Secondly, the electrode contacting electrolyte is used as a working electrode (WE), together with a counter electrode (CE) and a reference electrode (RE), in the potentiostatic circuit constituting the electrochemistry cell. Thus, the working electrode of electrochemistry cell is the sensor of QCM.
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