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  • Open Access

    PROCEEDINGS

    Advances in Thermally-Driven Rotary Nanomotor from Carbon Materials

    Kun Cai1,*

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.27, No.3, pp. 1-2, 2023, DOI:10.32604/icces.2023.09777

    Abstract Rotary nanomotor, as the essential component of a dynamic nanomachine, can output rotation via its rotor. So far, several techniques e.g., electric-, nanofluid-, laser-, chemical-, and thermally-driven models, have been proposed to actuate a rotary nanomotor,. Among the techniques, the thermally-driven rotary nanomotor (TDRM) models are the simplest technique that does not require an accurate external field as into energy. The model says that the thermal vibration of the atoms in the nanomotor can transmitted into rotationally kinetic energy via a rotor. Cai et al. [1] discovered the TDRM when relaxing double-walled carbon nanotubes (CNTs)… More >

  • Open Access

    PROCEEDINGS

    Self-Driving Behavior and Pinning Effect of Droplets on GrapheneCovered Functional Textured Surfaces

    Fujian Zhang1, Xiang Gao1, Zhongqiang Zhang1,2,*

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.26, No.4, pp. 1-1, 2023, DOI:10.32604/icces.2023.09169

    Abstract Biological features such as the bumps on the back of desert beetles and the spikes of cacti enable the directional transport of water droplets, creating conditions for their survival in nature. Inspired by the interesting natural phenomenon, a novel design of nanopillared surface with a gradient density of structural pillar matrix covered by a monolayer graphene is proposed to realize ultrafast self-driving of water droplets. The droplet can move spontaneously at ultrahigh speed of 75.7 m/s (272.52 km/h) from sparsest to densest regions of pillars while a wettability gradient is created by the gradient distribution… More >

  • Open Access

    PROCEEDINGS

    Molecular Dynamic Study on Entangled Structure of Polymer Chains’ Network under High Speed Loading Condition

    Isamu Riku1,*, Koji Mimura1

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.26, No.3, pp. 1-1, 2023, DOI:10.32604/icces.2023.09070

    Abstract It is well known that the mechanical resistance of soft materials such as rubber and elastomer can be improved by cross-linkages or fillers, which will lead to a construction of entangled structure of polymer chains’ network. However, the correlation between the amount of cross-linkages or fillers with the toughness strength of the resultant material has not been clarified. Therefore, in this study, we at first construct a computational model for the resultant material with molecular dynamics method. Then, a series of simulations are performed for the resultant materials with different amount of cross-linkages or fillers… More >

  • Open Access

    PROCEEDINGS

    The Study of Shale Energy: Perspective from Molecular Dynamics (MD)

    Jie Liu1, Tao Zhang1,*, Shuyu Sun1,*

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.26, No.3, pp. 1-1, 2023, DOI:10.32604/icces.2023.09058

    Abstract In the last decades, the successful development of hydrofracture has paved the way to replace conventional energy with shale energy, such as shale oil and shale gas. However, shale energy always exists in very tight rock, which has extremely low porosity and permeability, proposing a high requirement for experimental facilities. The rise of molecular dynamics avoids the physical limitation handily, and it can provide a better understanding at the level of mechanism. In our studies, the MD method is used on the adsorption and transport behaviors of shale gas and oil in kerogen nanopores. Regarding… More >

  • Open Access

    PROCEEDINGS

    Rate Effect of Adhesive Wear Due to Asperity Plowing

    Jianqiao Hu1,2,*, Hengxu Song1, Xiaoming Liu1,2

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.26, No.1, pp. 1-1, 2023, DOI:10.32604/icces.2023.010554

    Abstract Material wear between contact surfaces with relatively sliding can be related to the failure of elevated asperities at small scales. The asperity wear depends on various factors, including material properties, interfacial adhesion, and friction velocity. In this study, using a series of materials characterized by the modified coarse-grained potentials, we studied the rate effect of adhesive wear at the asperity level over a wide range of plowing conditions. The results showed that increasing plowing velocity leads to the transition of the wear mechanism from plasticity-induced asperity smoothing to the formation of fractured debris and thus… More >

  • Open Access

    PROCEEDINGS

    Rate Effect of Adhesive Wear due to Asperity Plowing

    Jianqiao Hu1,2,*, Hengxu Song1, Xiaoming Liu1,2

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.25, No.3, pp. 1-1, 2023, DOI:10.32604/icces.2023.010554

    Abstract Material wear between contact surfaces with relatively sliding can be related to the failure of elevated asperities at small scales. The asperity wear depends on various factors, including material properties, interfacial adhesion, and friction velocity. In this study, using a series of materials characterized by the modified coarse-grained potentials, we studied the rate effect of adhesive wear at the asperity level over a wide range of plowing conditions. The results showed that increasing plowing velocity leads to the transition of the wear mechanism from plasticity-induced asperity smoothing to the formation of fractured debris and thus… More >

  • Open Access

    PROCEEDINGS

    Atomistic Migration Mechanisms of [1210] Symmetric Tilt Grain Boundaries in Magnesium

    Chuanlong Xu1, Haidong Fan1,*

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.25, No.3, pp. 1-1, 2023, DOI:10.32604/icces.2023.010110

    Abstract Grain boundary (GB) is an important microstructure and plays a vital role in the mechanical properties of polycrystalline materials by GB migration and sliding. In this work, molecular dynamic (MD) simulations were performed to investigate the migration mechanisms of symmetric tilt grain boundaries (STGBs) in magnesium. A total of 15 STGBs with the rotation angle θ from 0° to 90° were studied under a pure shear loading. The results show that the GB migration mechanisms are significantly influenced by the GB structure. For small angle STGBs (θ<28°), the GB migration is mediated … More >

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