A5074517667- Enhanced Oil Recovery Techniques
- Hydrocarbon exploration and reservoir analysis
- Hydraulic Fracturing and Reservoir Analysis
- Force Microscopy Techniques and Applications
- Material Dynamics and Properties
- Paleontology and Evolutionary Biology
- Granular flow and fluidized beds
- NMR spectroscopy and applications
- Ichthyology and Marine Biology
- Mechanical and Optical Resonators
- Drilling and Well Engineering
- Reservoir Engineering and Simulation Methods
- Soil and Unsaturated Flow
- Surface Modification and Superhydrophobicity
- Geophysical and Geoelectrical Methods
- Evolution and Paleontology Studies
- Material Properties and Processing
- Groundwater flow and contamination studies
- Medical Imaging Techniques and Applications
- Theoretical and Computational Physics
- Pickering emulsions and particle stabilization
- Near-Field Optical Microscopy
- Electrostatics and Colloid Interactions
- Image Processing and 3D Reconstruction
- Molecular Junctions and Nanostructures
Australian National University
2010-2021
University of Warsaw
2015
Forestry and Forest Products Research Institute
2014
University of British Columbia
2014
Physical Sciences (United States)
1998-2004
Centre National de la Recherche Scientifique
1998-2002
Institut Charles Sadron
1998-2002
Australian Defence Force Academy
1997
University of Canberra
1997
UNSW Sydney
1997
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMeasurement of forces in liquids using a force microscopeWilliam A. Ducker, Tim J. Senden, and Richard M. PashleyCite this: Langmuir 1992, 8, 7, 1831–1836Publication Date (Print):July 1, 1992Publication History Published online1 May 2002Published inissue 1 July 1992https://pubs.acs.org/doi/10.1021/la00043a024https://doi.org/10.1021/la00043a024research-articleACS PublicationsRequest reuse permissionsArticle Views4229Altmetric-Citations950LEARN ABOUT...
The three-dimensional structure of large packings monosized spheres with volume fractions ranging between 0.58 and 0.64 has been studied x-ray computed tomography. We search for signatures organization, classifying local arrangements exploring the effects geometrical constrains on global packing. This study is largest most accurate empirical analysis disordered at grain-scale to date, mapping over 380,000 sphere coordinates precision within 0.1% diameters. discuss topological methods...
Summary A reservoir carbonate core plug has been imaged in 3D across a range of length scales using high resolution X-ray microtomography (μ-CT). Data from the original 40-mm diameter was obtained at vug scale (42 μm resolution) and allows size, shape spatial distribution disconnected vuggy porosity, ϕvug = 3.5% to be measured. Within volume over 32,000 separate vugs are identified broad size is Higher images, down 1.1 resolution, on subsets exhibit interconnected porosity allow one measure...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTExperimental Determination of Spring Constants in Atomic Force MicroscopyTim Senden and William DuckerCite this: Langmuir 1994, 10, 4, 1003–1004Publication Date (Print):April 1, 1994Publication History Published online11 March 2003Published inissue 1 April 1994https://pubs.acs.org/doi/10.1021/la00016a600https://doi.org/10.1021/la00016a600research-articleACS PublicationsRequest reuse permissionsArticle Views1316Altmetric-Citations170LEARN ABOUT...
Interactions between charged surfaces immersed in aqueous calcium solutions were measured using the surface force apparatus and atomic microscope. With apparatus, good agreement with previously reported measurements was found for mica dilute up to 0.1 M. However, at higher concentrations large discrepancies observed. Compared earlier work, strength of lower by two or three orders magnitude range diminished. Experiments microscope indicated similar force-distance profiles interaction silicon...
Using sedimentation to obtain precisely controlled packings of noncohesive spheres, we find that the volume fraction ${\ensuremath{\phi}}_{\mathrm{RLP}}$ loosest mechanically stable packing is in an operational sense well defined by a limit process. This random loose decreases with decreasing pressure $p$ and increasing interparticle friction coefficient $\ensuremath{\mu}$. x-ray tomography correct for container boundary effect depends on particle size, rough particles...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAdsorption of the poly(oxyethylene) nonionic surfactant C12E5 to silica: a study using atomic force microscopyMark W. Rutland and Tim J. SendenCite this: Langmuir 1993, 9, 2, 412–418Publication Date (Print):February 1, 1993Publication History Published online1 May 2002Published inissue 1 February 1993https://pubs.acs.org/doi/10.1021/la00026a009https://doi.org/10.1021/la00026a009research-articleACS PublicationsRequest reuse permissionsArticle...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAtomic Force Microscopy: Imaging with Electrical Double Layer InteractionsTim J. Senden, Calum Drummond, and Patrick KekicheffCite this: Langmuir 1994, 10, 2, 358–362Publication Date (Print):February 1, 1994Publication History Published online1 May 2002Published inissue 1 February 1994https://pubs.acs.org/doi/10.1021/la00014a004https://doi.org/10.1021/la00014a004research-articleACS PublicationsRequest reuse permissionsArticle...
Tight gas reservoirs exhibit storage and flow characteristics that are intimately tied to depositional diagenetic processes. As a result, exploitation of these resources requires comprehensive reservoir description characterization program identify properties which control production. In particular, tight have significant primary secondary porosity pore connectivity dominated by clays slot-like pores. This makes them particularly susceptible the effects overburden stress variable water...
We present experimental evidence of the Rayleigh−Plateau instability a single chain in poor solvent conditions using molecule force microscopy. Poly(N-isopropylacrylamide) (PNIPAM) and poly(ethylene oxide) (PEO) are adsorbed onto silicon nitride surfaces various solutions corresponding to good conditions. In conditions, force−separation profile is identical that described previously attributed elastic stretching polymer chains. However, we see dramatically different profile, characterized by...
We study both experimentally, with an atomic force microscope (AFM), and theoretically, using scaling arguments, the stretching of a single polyelectrolyte chain adsorbed at planar charged surface. The main result is that needed to pull monomer distance z from surface reaches plateau distances larger than Debye screening length solution.