Výsledky vyhledávání - "Zheng, Weichao"

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Experimental testing of the Prandtl-Tomlinson model: Molecular origin of rotational friction

Autor: Zheng, Weichao

Publikováno v: Appl. Phys. Lett. 124, 141601 (2024)

Structural superlubricity, one of the most important concepts in modern tribology, has attracted lots of interest in both fundamental research and practical applications. However, the underlying model, known as the Prandtl-Tomlinson (PT) model, is ov

Externí odkaz: http://arxiv.org/abs/2305.06191

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On the origin of permeative flows in cholesteric liquid crystals

Autor: Zheng, Weichao

Permeative flows, known for the explanation of the anomalous viscosity (10^5 Poise) in cholesterics at low shear rates, are still under debate due to the difficulty of experiments. Here we use the Surface Force Balance, in which uniform domains with

Externí odkaz: http://arxiv.org/abs/2305.06189

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Anchoring-mediated stick-slip winding of cholesteric liquid crystals

Autor: Zheng, Weichao

Publikováno v: Phys. Rev. E 109 (2024) 044701

The stick-slip phenomenon widely exists in contact mechanics, from the macroscale to the nanoscale. During cholesteric-nematic unwinding by external fields, there is controversy regarding the role of planar surface anchoring, which may induce discont

Externí odkaz: http://arxiv.org/abs/2305.06187

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