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Natural Bactericidal Surfaces: Mechanical Rupture of Pseudomonas aeruginosa Cells by Cicada Wingsmore
by Vladimir Baulin and V. Truong
Publisher: Wiley Online Library
Publication Date: Jan 1, 2012
Publication Name: Small
Research Interests:
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Publisher: ncbi.nlm.nih.gov
Publication Date: 2013
Publication Name: Biofouling
Research Interests: Technology, Biofilms, Titanium, Atomic Force Microscopy, Metal Nanoparticles, and 12 moreBiological Sciences, Environmental Sciences, Computer Simulation, Staphylococcus aureus, Three Dimensional Imaging, Biofouling, Pseudomonas aeruginosa, Surface Properties, Bacterial Load, Pseudomonas Aeruginosa, Species Specificity, and Bacterial Adhesion
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by Russell Crawford and V. Truong
Publication Date: 2010
Publication Name: Trends in Colloid and Interface Science XXIII
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by Russell Crawford and V. Truong
Publication Date: 2011
Publication Name: Polymers
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Bacterial Retention on Superhydrophobic Titanium Surfaces Fabricated by Femtosecond Laser Ablationmore
by Russell Crawford and V. Truong
Publication Date: 2011
Publication Name: Langmuir
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Differential attraction and repulsion of Staphylococcus aureus and Pseudomonas aeruginosa on molecularly smooth titanium filmsmore
by Russell Crawford and V. Truong
Publication Date: 2011
Publication Name: Scientific Reports
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Natural Bactericidal Surfaces: Mechanical Rupture of Pseudomonas aeruginosa Cells by Cicada Wingsmore
by Russell Crawford and V. Truong
Numerous insects have evolved to possess superhydrophobic surfaces, which are thought to limit bacterial contamination through a self-cleaning action. While investigating the adhesion of Pseudomonas aeruginosa on the wings of a species of... more
Numerous insects have evolved to possess superhydrophobic surfaces, which are thought to limit bacterial contamination through a self-cleaning action. While investigating the adhesion of Pseudomonas aeruginosa on the wings of a species of cicada (Psaltoda claripennis), we discovered that the wing surfaces were actually deadly to the cells. Electron microscopy showed nanopillars on the surface penetrating the cells, which was confirmed to be lethal through viability experiments. The effect was very fast, with individual bacterial ...
Publisher: WILEY‐VCH Verlag
Publication Date: Jun 4, 2012
Publication Name: Small
Research Interests:
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by Russell Crawford and V. Truong
Publication Date: 2012
Publication Name: Scanning
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by Russell Crawford and V. Truong
Publication Date: 2010
Publication Name: Langmuir
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Spatial Variations and Temporal Metastability of the Self-Cleaning and Superhydrophobic Properties of Damselfly Wingsmore
by Russell Crawford and V. Truong
Self-cleaning surfaces found in nature show great potential for application in many fields, ranging from industry to medicine. The ability for a surface to self-clean is intimately related to the wetting properties of the surface; for a... more
Self-cleaning surfaces found in nature show great potential for application in many fields, ranging from industry to medicine. The ability for a surface to self-clean is intimately related to the wetting properties of the surface; for a surface to possess self-cleaning ability it must exhibit extremely high water contact angles and low water adhesion. While investigating the self-cleaning properties of damselfly wings, significant spatial variations in surface wettability were observed. Within an area of 100 μm × 100 μm of the wing surface the water contact angle was found to vary up to 17.8°, while remaining consistently superhydrophobic. The contributions of both surface chemistry and topography to the hydrophobicity of the wings were assessed in an effort to explain these variations. Synchrotron-sourced Fourier-transform infrared microspectroscopy revealed that some of the major components of the wing were aliphatic hydrocarbons and esters, which are attributable to epicuticular lipids. The wing topography, as determined by optical profilometry and atomic force microscopy (AFM), also showed only minor levels of heterogeneity arising from irregular ordering of surface nanostructures. The measured contact angle of a single droplet of water was also found to decrease over time as it evaporated, reaching a minimum of 107°. This is well below the threshold value for superhydrophobicity (i.e., 150°), demonstrating that when the surface is in contact with water for a prolonged period, the damselfly wings lose their superhydrophobicity and subsequently their ability to self-clean. This decrease in hydrophobicity over time can be attributed to the surface undergoing a transition from the Cassie-Baxter wettability state toward the Wenzel wettability state.
Publication Date: 2012
Publication Name: Langmuir
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Physico-mechanical characterisation of cells using atomic force microscopy — Current research and methodologiesmore
by Russell Crawford and V. Truong
Publication Date: 2011
Publication Name: Journal of Microbiological Methods
Research Interests: Microbiology, Materials Science, Research Methodology, Medical Microbiology, Fluorescence Microscopy, and 10 moreRaman Spectroscopy, Cell Adhesion, Cell Biology, Atomic Force Microscopy, Adhesion, Single Molecule Force Spectroscopy, Surface Structure, Cells, Cell Surface Markers, and Cytological Techniques
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Escherichia coli, Pseudomonas aeruginosa, and Staphylococcus aureus Attachment Patterns on Glass Surfaces with Nanoscale Roughnessmore
by Russell Crawford and V. Truong
Publication Date: 2009
Publication Name: Current Microbiology
Research Interests: Microbiology, Medical Microbiology, Glass, Scanning Electron Microscopy, Atomic Force Microscopy, and 14 moreSurface Roughness, Cell morphology, Surface modification, Escherichia coli, Staphylococcus aureus, Surface topography, Contact angle, Pseudomonas aeruginosa, Current, Surface Properties, Surface Charge, Confocal Laser Scanning Microscopy, Pseudomonas Aeruginosa, and Bacterial Adhesion
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by Russell Crawford and V. Truong
Publication Date: 2012
Publication Name: Biosensors and Bioelectronics
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by Russell Crawford and V. Truong
Publication Date: 2013
Publication Name: Biophysical Journal
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The influence of nano-scale surface roughness on bacterial adhesion to ultrafine-grained titaniummore
by Russell Crawford and V. Truong
Publication Date: 2010
Publication Name: Biomaterials
Research Interests: Biomaterials, Titanium, Transmission Electron Microscopy, Atomic Force Microscopy, Multidisciplinary, and 17 moreSurface Roughness, Metal Nanoparticles, Severe Plastic Deformation, Staphylococcus aureus, Surface topography, Contact angle, Surface Morphology, Pseudomonas aeruginosa, Surface Area, Particle Size, Surface Properties, Equal Channel Angular Pressing, Pseudomonas Aeruginosa, Chemical Composition, X Ray Photoelectron Spectroscopy, Grain Refinement, and Bacterial Adhesion
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Publication Date: 2010
Publication Name: Biofouling
Research Interests: Technology, Secondary Ion Mass Spectrometry, Atomic Force Microscopy, Surface Chemistry, Biological Sciences, and 13 moreEnvironmental Sciences, Time of Flight, Surface topography, Surface Water, Contact angle, Biofouling, Surface Properties, Optical Fibre, Biological Process, Sensor Array, High Density Concrete, Optical Fibers, and Bacterial Adhesion
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by Russell Crawford and V. Truong
Publication Date: 2009
Publication Name: Biofouling
Research Interests:
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by Russell Crawford and V. Truong
Publication Date: 2013
Publication Name: Biofouling
Research Interests: Technology, Biofilms, Titanium, Atomic Force Microscopy, Metal Nanoparticles, and 12 moreBiological Sciences, Environmental Sciences, Computer Simulation, Staphylococcus aureus, Three Dimensional Imaging, Biofouling, Pseudomonas aeruginosa, Surface Properties, Bacterial Load, Pseudomonas Aeruginosa, Species Specificity, and Bacterial Adhesion
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Air-directed attachment of coccoid bacteria to the surface of superhydrophobic lotus-like titaniummore
by Russell Crawford and V. Truong
Publication Date: 2012
Publication Name: Biofouling
Research Interests:
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by Russell Crawford and V. Truong
Publication Date: 2009
Publication Name: Applied Microbiology and Biotechnology
Research Interests: Titanium, Applied microbiology, Multidisciplinary, Adhesion, Escherichia coli, and 11 moreBacteria, Staphylococcus aureus, Surface topography, Pseudomonas aeruginosa, Applied Microbiology and Biotechnology, Surface Properties, Equal Channel Angular Pressing, Pseudomonas Aeruginosa, Grain Refinement, Bacterial Adhesion, and Silicones
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by Russell Crawford and V. Truong
Publication Date: 2011
Publication Name: Applied Microbiology and Biotechnology
Research Interests: Scanning Electron Microscopy, Nanotechnology, Applied microbiology, Atomic Force Microscopy, Multidisciplinary, and 18 moreSilver, Staphylococcus aureus, Statistical Significance, Contact angle, Magnetron Sputtering, Pseudomonas aeruginosa, Energy Dispersive X-Ray Analysis, Applied Microbiology and Biotechnology, Anti-Bacterial Agents, Confocal Laser Scanning Microscopy, Thin film deposition, Pseudomonas Aeruginosa, Mass Spectroscopy, Surface free energy, Film Thickness, Microbial Viability, Bacterial Adhesion, and Bactericidal Activity
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Publication Date: 2012
Publication Name: Advances in Colloid and Interface Science
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Plasma-Enhanced Synthesis of Bioactive Polymeric Coatings from Monoterpene Alcohols: A Combined Experimental and Theoretical Studymore
by Russell Crawford and V. Truong