atomic force microscope imagesfrictionapplied forcegraphitescan directionatomic resolutionIn this work we simultaneously measure both the friction and applied force acting during imaging on graphite with an atomic force microscope (AFM). We show that: (1) The scan direction with respect to the ...
In Liu and Nagel's generalized description of jamming, an arrested assembly of grains can be fluidized through dilation or by increasing the applied stress16,17,18. The origin of jamming is closely linked to the presence of force chains within the packing19,20, and the unjamming, or yielding...
(2009). Characterization of friction force dynamics. Control Systems, IEEE. 28. 64 - 81. 10.1109/MCS.2008.929279. Al-Bender, Farid. (2010). Fundamentals of friction modeling. Proceedings - ASPE Spring Topical Meeting on Control of Precision Systems, ASPE 2010. 48. Al-Bender, Farid & Moer...
Interlayer friction and superlubricity in single-crystalline contact enabled by twodimensional flake-wrapped atomic force microscope tips. ACS Nano12(8); 7638–7646 (2018) Article Google Scholar Berman D, Erdemir A, Sumant A V. Approaches for achieving superlubricity in two-dimensional materials. ...
revealed that superlubricity can be ''switched'' on and off in situ when an ionic liquid is used to lubricate the silica–graphite interface by atomic force microscopy measurements [13]. When the potential is changed, the composition of the interfacial layer responds, which alters the frequency ...
Under the assumption of no sliding of joints (infinite friction), a well-known result of standard limit analysis [20] states that in a settlement mechanism the collapse thrust (more precisely, the component of the reaction force parallel to the settlement displacement) attains its lowest ...
Pat. No. 3,937,148 issued to Simpson (1976), then the frictional force generated between these two surfaces is correspondingly minimized. All these techniques of friction reduction can be used individually or possibly, in some cases, in combination. Examples are air bearings, like those ...
However, since the total frictional force Ffstatis derived solely from the normal forces N1, the equation can be rewritten in the following sequences: Eqn.2:2µN≥mcgEqn.3:μmcgtanα≥mcgEqn.4:tan...
generally orthogonal to the axis of relative rotation of the inner body12and the spiral member14. The smooth bearing surface of the ridge34thereby presents what can be referred to as a longitudinal bearing surface in that longitudinal force can bear against the smooth bearing surface of the ...
When the rotational force is thus transmitted from the input shaft 6 to the output shaft 7, the loading cam device 18 presses the output disc 17 toward the input roller 14 while transmitting this rotational force. A load for thus pressing the output disc 17 toward the input roller 14 is ...