Oscillatory Dissipation of a Simple Confined Liquid

Maali, Abdelhamid; Cohen–Bouhacina, Touria; Couturier, G.; Aimé, Jean‐Pierre

doi:10.1103/physrevlett.96.086105

Cited by 80 publications

(98 citation statements)

References 26 publications

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“…In order to observe it, using an extremely small cantilever amplitude ͑on the order of 0.1 nm͒ with lock-in amplifier might be a feasible choice. 59 Such observation is expected to reveal more details regarding the atomic scale friction mechanism between nanotubes as well as the defect distribution on the MWNT.…”

Section: ͑6͒mentioning

confidence: 99%

Adhesion and friction of a multiwalled carbon nanotube sliding against single-walled carbon nanotube

et al. 2008

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The adhesion and friction at crossed nanotube junctions were investigated in ambient by using an atomic force microscope ͑AFM͒ in tapping mode. A multiwalled carbon nanotube ͑MWNT͒ tip attached to a conventional AFM probe was scanned across a single-walled carbon nanotube ͑SWNT͒ suspended over a 2-m-wide trench. The interaction between nanotubes was found to critically depend on the morphology of the MWNT tip, which was determined from force-distance curves and scans performed against hard trench surface. The interaction between nanotubes caused the attenuation of vibrational amplitude of AFM cantilever, from which the frictional force between nanotubes was obtained by analyzing the dissipated vibrational power of cantilever. The adhesive force between nanotubes was measured from the vertical cantilever deflection when the MWNT tip end detached from the shell of the SWNT. From the friction and adhesion data, an experimental value of coefficient of friction of 0.006Ϯ 0.003 is obtained for the sliding between nanotubes, which is comparable to the reported value of graphite on nanoscale. The shear strength between nanotubes is derived to be 4 Ϯ 1 MPa by using a continuum model, which is in accordance with the value of 2 MPa reported for the sliding of MWNT on graphite in ambient. It is nearly 2 orders of magnitude larger than the interlayer shear strength of 0.05 MPa reported for MWNT in vacuum. We attribute the difference between the intertube and the interlayer frictions to the presence of water at the nanotube-nanotube interface in ambient.

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Section: ͑6͒mentioning

confidence: 99%

Adhesion and friction of a multiwalled carbon nanotube sliding against single-walled carbon nanotube

et al. 2008

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“…In the general operation of a commercial liquid AFM, the whole liquid cell is excited by a piezoelectric element, which results in a multitude of spurious peaks related to the fluid cell eigenfrequencies (Bhushan et al , 2006a. In this paper, a modified cantilever holder (Maali et al 2006; figure 3) was used to directly provide piezo excitation to the cantilever in fluid with a commercial MultiMode III AFM in the tapping mode. A horizontal slot was carved out in the opening of the commercially available cantilever holder for non-fluid use above the piezo element in order to insert a glass slide.…”

Section: Substratesmentioning

confidence: 99%

Nanoscale adhesion, friction and wear studies of biomolecules on silane polymer-coated silica and alumina-based surfaces

Bhushan

Kwak

Gupta

et al. 2008

J. R. Soc. Interface.

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Proteins on biomicroelectromechanical systems (BioMEMS) confer specific molecular functionalities. In planar FET sensors (field-effect transistors, a class of devices whose protein-sensing capabilities we demonstrated in physiological buffers), interfacial proteins are analyte receptors, determining sensor molecular recognition specificity. Receptors are bound to the FET through a polymeric interface, and gross disruption of interfaces that removes a large percentage of receptors or inactivates large fractions of them diminishes sensor sensitivity. Sensitivity is also determined by the distance between the bound analyte and the semiconductor. Consequently, differential properties of surface polymers are design parameters for FET sensors. We compare thickness, surface roughness, adhesion, friction and wear properties of silane polymer layers bound to oxides (SiO 2 and Al 2 O 3 , as on AlGaN HFETs). We compare those properties of the film-substrate pairs after an additional deposition of biotin and streptavidin. Adhesion between protein and device and interfacial friction properties affect FET reliability because these parameters affect wear resistance of interfaces to abrasive insult in vivo. Adhesion/friction determines the extent of stickage between the interface and tissue and interfacial resistance to mechanical damage. We document systematic, consistent differences in thickness and wear resistance of silane films that can be correlated with film chemistry and deposition procedures, providing guidance for rational interfacial design for planar AlGaN HFET sensors.

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“…It has been shown for instance that a structured liquid exhibits an effective viscosity which is markedly enhanced with respect to the bulk one [17,18,19,20,21]. Most of these studies were * Electronic address: bureau@insp.jussieu.fr concerned with the properties of ultrathin films formed under quasi-static compression, so as to probe the behavior of systems having reached their equilibrium layered structure.…”

Section: Introductionmentioning

confidence: 99%

Drainage of a nanoconfined simple fluid: Rate effects on squeeze-out dynamics

Bureau

Arvengas

2008

Phys. Rev. E

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We investigate the effect of loading rate on drainage in molecularly thin films of a simple fluid made of quasi-spherical molecules (octamethylcyclotetrasiloxane, OMCTS). We find that (i) rapidly confined OMCTS retains its tendency to organize into layers parallel to the confining surfaces, and (ii) flow resistance in such layered films can be described by bulklike viscous forces if one accounts for the existence of one monolayer immobilized on each surfaces. The latter result is fully consistent with the recent work of Becker and Mugele, who reached a similar conclusion by analyzing the dynamics of squeeze-out fronts in OMCTS [T. Becker and F. Mugele, Phys. Rev. Lett. 91 166104 (2003)]. Furthermore, we show that the confinement rate controls the nature of the thinning transitions: layer-by-layer expulsion of molecules in metastable, slowly confined films proceeds by a nucleation/growth mechanism, whereas deeply and rapidly quenched films are unstable and undergo thinning transitions akin to spinodal decomposition.

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Oscillatory Dissipation of a Simple Confined Liquid

Cited by 80 publications

References 26 publications

Adhesion and friction of a multiwalled carbon nanotube sliding against single-walled carbon nanotube

Adhesion and friction of a multiwalled carbon nanotube sliding against single-walled carbon nanotube

Nanoscale adhesion, friction and wear studies of biomolecules on silane polymer-coated silica and alumina-based surfaces

Drainage of a nanoconfined simple fluid: Rate effects on squeeze-out dynamics

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