A5036745226- Electrochemical Analysis and Applications
- Advanced Chemical Sensor Technologies
- Analytical Chemistry and Sensors
- Electrochemical sensors and biosensors
- Advanced biosensing and bioanalysis techniques
- Gas Sensing Nanomaterials and Sensors
- Biosensors and Analytical Detection
- Gold and Silver Nanoparticles Synthesis and Applications
- Molecular Junctions and Nanostructures
- Conducting polymers and applications
- Water Quality Monitoring and Analysis
- Advanced Sensor and Energy Harvesting Materials
- Molecular Sensors and Ion Detection
- Blockchain Technology Applications and Security
- Nanomaterials and Printing Technologies
- Identification and Quantification in Food
- Metabolomics and Mass Spectrometry Studies
- X-ray Spectroscopy and Fluorescence Analysis
- Nanofabrication and Lithography Techniques
- FinTech, Crowdfunding, Digital Finance
- Advanced Nanomaterials in Catalysis
- DNA and Nucleic Acid Chemistry
- Molecular Communication and Nanonetworks
- Spectroscopy and Quantum Chemical Studies
- SARS-CoV-2 detection and testing
CSIRO Manufacturing
2009-2021
Commonwealth Scientific and Industrial Research Organisation
2007-2020
Materials Science & Engineering
2010-2014
UNSW Sydney
2003-2008
American Sports University
2006
Arizona State University
2006
John Wiley & Sons (Germany)
2006
IBM (United States)
1967
The effect of the surface chemistry DNA recognition interfaces on hybridization at a gold was investigated using both electrochemistry and quartz crystal microbalance (QCM) technique. Different were prepared two-component self-assembled monolayer consisting thiolated 20-mer probe single-stranded (ss-DNA) containing either 3'-mercaptopropyl or 3'-mercaptohexyl linker group an alcohol-terminated diluent layer with 2-, 6-, 11-carbon length. influence interfacial design efficiency, affinity...
The modification of electrodes with the tripeptide Gly-Gly-His for detection copper in water samples is described detail. modified electrode was prepared by first self-assembling 3-mercaptopropionic acid (MPA) onto gold followed covalent attachment to self-assembled monolayer using carbodiimide coupling. were characterized electrochemistry, a newly developed mass-spectrometry method and quantum mechanical calculations. mass spectrometry confirmed proceed as expected peptide bonds formed...
Abstract Sensors for the detection of metal ions are considerable importance enabling monitoring environmental samples ion contamination directly in field. This review outlines use peptides and amino acids as recognition element electrochemical sensors detection. Initially complexation metals by is discussed followed immobilization on electrode surfaces. Subsequently, application peptide modified electrodes detecting reviewed finally challenges future prospects outlined.
An electrochemical sensor for the detection of cadmium ions is described using immobilized glutathione as a selective ligand. First, self-assembled monolayer 3-mercaptopropionic acid (MPA) was formed on gold electrode. The carboxyl terminus then allowed attachment (GSH)via carbodiimide coupling to give MPA-GSH modified A ion forms complex with via free sulfhydryl group and also groups. complexed reduced by linear Osteryoung square wave voltammetry limit 5 nM. effect kinetics accumulation...
A novel chemiresistor sensor for detection of organic analytes in high-conductivity aqueous electrolyte solution is reported. The based on thin films gold nanoparticles capped with a 1-hexanethiol monolayer that inkjet printed onto microelectrode. In order change nanoparticle film resistance to be measured, the electronic conduction must preferentially occur through rather than solution. This was achieved by miniaturizing device such double layer capacitance electrodes contact gives rise...
A simple and economical process for fabricating gold electrodes on paper is presented. Gold nanoparticles stabilised with 4-(dimethylamino)pyridine were applied to nail-polish coated filter made conductive using a camera flash sintering step. To test the ability of sintered nanoparticle film function as sensing platform, cysteine was self-assembled used electrochemical determination copper ions. The cysteine-sintered able successfully complex ions, only minor differences in performance...
Surface-enhanced Raman spectroscopy (SERS) technology is an attractive method for the prompt and accurate on-site screening of illicit drugs. As portable systems are available screening, readiness SERS sensing applications predominantly dependent on accuracy, stability cost-effectiveness strip. An atmospheric-pressure plasma-assisted chemical deposition process that can deposit even distribution nanogold particles in a one-step has been developed. The was used to print film paper-based...
Gold nanoparticle films (AuNPF) functionalized with a range of hydrophobic and hydrophilic thiols were assembled in chemiresistor sensor arrays that used to differentiate between complex mixtures analytes the aqueous phase. A array sampled simple system linear alcohols (methanol, ethanol, propan-1-ol, butan-1-ol) dissolved water over concentrations. Discriminant analysis confirmed response patterns could be successfully distinguish different alcohol solutions at concentrations above 20 mM...
Paper-based sensors are gaining increasing attention for their potential applications in resource-limited settings and point-of-care analysis. However, chemical analysis of paper-based electronic is frequently interpreted using complex software displays which compromise the advantages paper. In this work, we present two semiquantitative readout systems that can visually measure a change resistance resistive-based sensor. The use electrochromic Prussian blue/polyaniline as an indicator on...
Abstract This paper reports a study of the factors affecting analytical performance gold and glassy carbon electrodes modified with tripeptide Gly‐Gly‐His for detection copper ions. is attached to (GC) surface 4‐carboxyphenyl moieties or 3‐mercaptopropionic acid by reaction N‐terminal amine group peptide carboxylic groups monolayer via carbodiimide activation. X‐ray photoelectron spectroscopy was used characterize steps in biosensor fabrication. It found that sensor prepared on GC electrode...
A direct one-step nano-gold printing process from a HAuCl<sub>4</sub> solution precursor is demonstrated using an atmospheric-pressure plasma jet.
Chemiresistor sensor arrays are a promising technology to replace current laboratory-based analysis instrumentation, with the advantage of facile integration into portable, low-cost devices for in-field use. To increase performance chemiresistor high-throughput fabrication and screening methodology was developed assess different organothiol-functionalized gold nanoparticle chemiresistors. This testing implemented screen library consisting 132 organothiol compounds as capping agents...
Chemiresistor sensors based on thin films of gold nanoparticles capped with hydrophobic hexanethiol or hydrophilic 6-hydroxyhexanethiol self-assembled monolayers are shown to respond organic analytes in aqueous solution. Although considerable swelling the 6-hydroxyhexanethiol-capped nanoparticle film by water occurred, still responded toward presence The response nonpolar (toluene, hexane, dichloromethane) was reduced for chemiresistor compared hexanethiol-capped chemiresistor. However,...
The treatment of venous leg ulcers is commonly performed through the use compression bandaging. However, applying an effective pressure can be a challenge, even for experienced nurse. In this work, simple and portable integrated platform consisting piezoresistive sensor, paper‐based electrochromic readout system battery developed to directly monitor applied pressure. sensor fabricated using mixture copper particles polydimethylsiloxane tuned desired sensitivity via addition carbon paste....
The simultaneous determination of Cu(2+), Cd(2+) and Pb(2+) is demonstrated at four modified gold electrodes using N-PLS calibration. Three the were with peptides Gly-Gly-His, gamma-Glu-Cys Gly human angiotensin I which covalently attached to thioctic acid self-assembled monolayers fourth electrode was only. Voltammetry in presence three metal ions revealed one peak due reduction copper another overlapping peaks cadmium lead made quantification conventional methods difficult. used calibrate...