Results 51 to 60 of about 2,950 (201)

Frictional Duality Observed during Nanoparticle Sliding [PDF]

, 2008
One of the most fundamental questions in tribology concerns the area dependence of friction at the nanoscale. Here, experiments are presented where the frictional resistance of nanoparticles is measured by pushing them with the tip of an atomic force ...
Dietzel, Dirk, Fuchs, Harald, Monninghoff, Tristan, Ritter, Claudia, Schirmeisen, Andre, Schwarz, Udo D.   +5 more
core   +1 more source

Rethinking Models of DNA Organization in Micrometer‐Sized Chromosomes from the Perspective of the Nanoproperties of Chromatin Favoring a Multilayer Structure

Small Structures, Volume 5, Issue 10, October 2024.
The relationship between the self‐associative properties of nucleosomes at the nanoscale and the micrometric structure of chromosomes is highlighted in this perspective. The multilayer chromosome model, in which the stacked structure is maintained by weak face‐to‐face interactions between nucleosomes in adjacent layers, is compatible with all the ...
Joan‐Ramon Daban
wiley   +1 more source

Topographical and Tribological Characteristics of Asian Human Hair Cuticles

Mathematical Problems in Engineering, Volume 2015, Issue 1, 2015., 2015
The topography and frictional force of Asian black male and female hair cuticles at different locations are determined using atomic force microscopy (AFM) and friction force microscopy (FFM). The frictional values, mapped for comparison with surface morphology, corresponded qualitatively with the structures’ plane surface characteristics.
Chia-Ling Chang, Tsung-Han Ho, Te-Hua Fang, Mo Li   +3 more
wiley   +1 more source

Ballistic nanofriction

, 2010
Sliding parts in nanosystems such as Nano ElectroMechanical Systems (NEMS) and nanomotors, increasingly involve large speeds, and rotations as well as translations of the moving surfaces; yet, the physics of high speed nanoscale friction is so far ...
AE Filippov, AE Filippov, AN Kolmogorov, Andrea Vanossi, D Dietzel, D Fleishman, Erio Tosatti, FP Bowden, G Paolicelli, H Hedgeland, H Risken, J Krim, J Tersoff, JK Gimzewski, L Bardotti, L Bruschi, LJ Lewis, M Dienwiebel, M Ternes, M Urbakh, NS Tambe, P Jensen, PD Weidman, RA Johnson, RA van Delden, Roberto Guerra, S Pisov, SH Kim, Ugo Tartaglino, V Balzani, WD Luedtke, WR Browne, Y Maruyama, Z Farkas   +33 more
core   +1 more source

Interlayer Friction and Adhesion Effects in Penta‐PdSe2‐Based van der Waals Heterostructures

Advanced Science, Volume 11, Issue 34, September 11, 2024.
The greater the difference in ionicity between the two 2D materials comprising the sliding interfaces is, the lower the interlayer friction, providing key criteria for designing ultralow friction 2D material friction pairs. Abstract Due to their inherent lattice mismatch characteristics, 2D heterostructure interfaces are considered ideal for achieving ...
Guoliang Ru, Weihong Qi, Shu Sun, Kewei Tang, Chengfeng Du, Weimin Liu   +5 more
wiley   +1 more source

Interlayer Registry Determines the Sliding Potential of Layered Metal Dichalcogenides: The case of 2H-MoS2

, 2012
We provide a simple and intuitive explanation for the interlayer sliding energy landscape of metal dichalcogenides. Based on the recently introduced registry index (RI) concept, we define a purely geometrical parameter which quantifies the degree of ...
Adi Blumberg, Brown S., Cahangirov S., Cizaire L., Cohen S. R., Cohen S. R., Cohen-Karni T., Cumings J., Dienwiebel M., Fennimore A. M., Forró L., Greenberg R., Grierson D. S., Hirano M., Hod O., Inbal Zaltsman, Liang T., Liang T., Marom N., Martin J. M., Miura K., Nagapriya K. S., Oded Hod, Onodera T., Onodera T., Peng H. B., Popov I., Radisavljevic B., Rapoport L., Rapoport L., Rapoport L. B., Y., Sheehan P. E., Shinjo K., Stampfer C., Uri Keshet, Yoon Y., Zheng Q.   +36 more
core   +1 more source

Modeling friction: From nanoscale to mesoscale [PDF]

, 2013
The physics of sliding friction is gaining impulse from nanoscale and mesoscale experiments, simulations, and theoretical modeling. This Colloquium reviews some recent developments in modeling and in atomistic simulation of friction, covering open-ended ...
Manini, Nicola, Tosatti, Erio, Urbakh, Michael, Vanossi, Andrea, Zapperi, Stefano   +4 more
core   +2 more sources

Nonmonotonic load‐dependence of friction during nanoparticle manipulation

Micro &Nano Letters, Volume 19, Issue 4, July 2024.
The friction, wear and energy loss between two contact interfaces strongly depend on the motion state (sliding or rolling) of nanoparticles (NPs) when applied as nano‐additive in the fields of lubrication or ultra‐precision manufacturing. Here, the tests to manipulate single SiO2 nanoparticle (NP) on silicon surface using a nanoscale probe detected the
Chunsheng Luo, Lei Chen, Chuan Tang, Yangqin Liu, Yilong Jiang, Linmao Qian   +5 more
wiley   +1 more source

Effect of normal load and roughness on the nanoscale friction coefficient in the elastic and plastic contact regime

Beilstein Journal of Nanotechnology, 2013
The influence of applied normal load and roughness on the tribological behavior between the indenter and sample surface during nanoindentation-based scratching has been experimentally investigated by using different surfaces (fused silica and diamond ...
Aditya Kumar, Thorsten Staedler, Xin Jiang   +2 more
doaj   +1 more source

Evidence for contact delocalization in atomic scale friction [PDF]

, 2007
We analyze an advanced two-spring model with an ultra-low effective tip mass to predict nontrivial and physically rich 'fine structure' in the atomic stick-slip motion in Friction Force Microscopy (FFM) experiments.
Abel, D., Frenken, J. W. M., Krylov, S. Yu.   +2 more
core   +3 more sources