英国物理学会
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作者:... Subarna R Khanal , Ashlie Martini , Tevis D B Jacobs
来源:[J].Nanotechnology(IF 3.842), 2019, Vol.30 (3)
摘要:Metal nanocontacts play a critical role in atomic force microscopy, functional nanostructures, metallic nanoparticles, and nanoscale electromechanical devices. In all cases, knowledge of the area of contact, and its variation with load, is critical for the quantitative predi...
作者:... Nicholas Chan , Ashlie Martini , Philip Egberts
来源:[J].Nanotechnology(IF 3.842), 2017, Vol.28 (2)
摘要:Amplitude modulated atomic force microscopy (AM-AFM) was used to examine the influence of the size of the AFM tip apex on the measured surface topography of single highly oriented pyrolytic graphite (HOPG) atomic steps. Experimental measurements were complemented by molecular dyn...
作者:... Eric A Stach , Ashlie Martini , Tevis D B Jacobs
来源:[J].Nanotechnology(IF 3.842), 2019, Vol.30 (4)
摘要:Conductive modes of atomic force microscopy are widely used to characterize the electronic properties of materials, and in such measurements, contact size is typically determined from current flow. Conversely, in nanodevice applications, the current flow is predicted from the est...
作者:Ashlie Martini , Dairene Uy ...
来源:[J].Nanotechnology(IF 3.842), 2018, Vol.29 (8)
摘要:Incomplete fuel burning inside an internal combustion engine results in the creation of soot in the form of nanoparticles. Some of these soot nanoparticles (SNP) become adsorbed into the lubricating oil film present on the cylinder walls, which adversely affects the tribolog...
作者:... Alberto Otero-de-la-Roza , Erin R Johnson , Ashlie Martini
来源:[J].Nanotechnology(IF 3.842), 2015, Vol.26 (16)
摘要:Offset-driven self-retraction and oscillatory motion of bilayer graphene has been observed experimentally and is potentially relevant for nanoscale technological applications. In a previous article, we showed that friction between laterally offset graphene layers is controlled by...
作者:... Philip Egberts , Yalin Dong , Ashlie Martini
来源:[J].Nanotechnology(IF 3.842), 2015, Vol.26 (23)
摘要:Molecular dynamics (MD) simulations were used to model amplitude modulation atomic force microscopy (AM-AFM). In this novel simulation, the model AFM tip responds to both tip–substrate interactions and to a sinusoidal excitation signal. The amplitude and phase shift of the t...
作者:Yalin Dong , Xiawa Wu , Ashlie Martini
来源:[J].Nanotechnology(IF 3.842), 2013, Vol.24 (37)
摘要:Atomic friction on hydrogenated graphene is investigated using molecular dynamics simulations. Hydrogenation is found to increase friction significantly, and the atomic-level information provided by the simulations reveals that atomic roughness induced by hydrogenation is th...
作者:... Alberto Otero-de-la-Roza , Erin R Johnson , Ashlie Martini
来源:[J].Nanotechnology(IF 3.842), 2014, Vol.25 (42)
摘要:A multi-scale theoretical model is presented that is the first to offer quantitative agreement with experimental measurements of self-retraction and oscillation of bilayer graphene. The model integrates density-functional theory calculations of the energetics driving flake retrac...

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