نتایج جستجو برای: electrostatic force

تعداد نتایج: 210368  

Journal: :Physical review letters 2012
Shigeki Kawai Filippo Federici Canova Thilo Glatzel Teemu Hynninen Ernst Meyer Adam S Foster

We provide unambiguous evidence that the applied electrostatic field displaces step atoms of ionic crystal surfaces by subpicometers in different directions via the measurement of the lateral force interactions by bimodal dynamic force microscopy combined with multiscale theoretical simulations. Such a small imbalance in the electrostatic interaction of the shifted anion-cation ions leads to an...

Journal: :IOP Conference Series: Materials Science and Engineering 2019

2013
Louis P. Lee Daniel J. Cole Chris-Kriton Skylaris William L. Jorgensen Mike C. Payne

Atomic partial charges for use in traditional force fields for biomolecular simulation are often fit to the electrostatic potentials of small molecules and, hence, neglect large-scale electronic polarization. On the other hand, recent advances in atoms-in-molecule charge derivation schemes show promise for use in flexible force fields but are limited in size by the underlying quantum mechanical...

2018
Meng Shen

The debut of single and few-layer graphene (FLG) in the past decade has surprised the physics community and led to numerous research studies on 2D materials embodied as atomically thin layered materials (ATLMs). Beyond exceptional electronic conductivity, FLG presents various interesting physical properties, including interface-layer-independent heat transfer and wetting transparency. Despite t...

2001
Andrey A. Bliznyuk Alistair P. Rendell Toby W. Allen Shin-Ho Chung

The molecular electrostatic potential inside the potassium channel protein from Streptomyces liVidans has been investigated using linear scaling semiempirical quantum chemical method, for a variety of geometries, with and without solvating water molecules. The results are compared with those given by a number of popular molecular mechanics force-fields. The difference between the quantum and mo...

2003
L. A. Rocha E. Cretu G. de Graaf R. F. Wolffenbuttel

Capacitive accelerometers with electrostatic force feedback are widely employed, because of performance and robustness. The force feedback acts as a means for electronic modulation of the spring constant of the suspension. Commonly, the electrostatic feedback is employed for null-based acceleration measurement. A suitable electrostatic time-varying actuation could instead be used to make the ac...

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