adhesion
Post-Doc position on stresses and adhesion in multilayers (France)
Please note that a post-doc position on stresses and adhesion in optical multilayers is open. The position is for 2-years shared between SVI (Paris) and Phymat (Poitiers).
Link to a virus-free MS Word description of the position:
http://www.saint-gobain-recherche.com/svi/en/image_merethif_position.html
For further details and applications (cover letter, CV, statement of research interests):
Post-doc position on Multiscale Simulations of Cell Contact and Adhesion
A post-doc position on multiscale simulation of cell contact and adhesion shall be available this coming Fall at UC Berkeley. We are seeking for a person who has experience and background on finite element computations, especially in cell contact/adhesion modeling and simulation or finite deformation simulations.
Anyone who is interested in the position please send an email, resume, and reference to li [at] ce.berkeley.edu (li[at]ce[dot]berkeley[dot]edu)
Journal Club Theme of Jan. 1 2008: Role of Mechanics in Biomimetics
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With the beginning of the year 2008, the iMechanica journal club moves to two topics per month. This first topic will be highlighted here for 1-14 January, with the next topic starting on 15 January.
State-of-the-art understanding of cracking for porous materials?
It seems there are quite a few experimental studies [1,2] on the fracture properties of porous materials, like nanoporous low-k dielectrics, as a function of porosity. Can anyone point out some references on the theoretical part, like the available models, computational methods or analytical approaches that can capture microstructure information, including porosity, pore geometry etc. Interface delamination of porous materials is also of interest. Thanks.
Adhesion in viscoelastic contacts
Yesterday I had the distinct pleasure of seeing a mechanics seminar delivered "tag-team" by Ken Johnson and Jim Greenwood. (I know several people have thought I was a bit mad for jumping "across the pond" but there are really some amazing benefits of being part of the Cambridge Engineering faculty!)
Motion of precision linear bearings on nanometre scale
A systematic characterization of the motion and friction of a linear bearing with rolling elements used for nanopositioning reveals an explicit distinction of static and rolling friction. The effects
IS THERE NO PULL-OFF FOR ADHESIVE FRACTAL SURFACES?
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In this short note we remark that, at least for the theory of Fuller & Tabor for the adhesive contact of rough random surfaces, fractal surfaces have a limiting zero pull-off force, for all fractal dimensions or amplitudes of roughness. This paradoxical result raises some questions. I ask the iMechanica community for opinions, comparisons of experiments, etc.
review on KLJ's most loved areas in contact mechanics
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If we read Ken Johnson’s Timoshenko medal 2006 speech also posted in iMechanica, the subjects Ken mentions in his brief and humorous speech are:-
- corrugation of railway rails,
- the damping at clamped joints,
- Hertz contact under the action of tangential friction forces,
- ‘tribology' (word invented by David Tabor along with F.P.Bowden in Cambridge),
- Atomic Force Microscope, Surface Force Apparatus & friction on the atomic scale,
- Relation between adhesion and friction.
These are probably the subjects Ken is most attached to. Some are older (but perhaps not solved, lke corrugation, for which the “short-pitch” fixed wavelength mechanism is still unclear despite Ken’s 40 years of efforts (!), and some are certainly fashionable today (like adhesion and friction at atomic scale). In starting this forum, why not start from here? Should we prepare a 1 page summary on each of these topics? Since I start this, I will do the effort on corrugation I promise in the next week or so!
Regards, Mike