Anisotropic wetting of droplets on stripe-patterned chemically heterogeneous surfaces
effect of length ratio and deposition position
Yuxiang Wang, Meipeng Jian, Huiyuan Liu, Xiwang Zhang
The equilibrium state of a droplet deposited on chemically heterogeneous surfaces is studied by using many-body dissipative particle dynamics. The length ratio covers 2 orders from 0.01 to 1 and allows a systematical inspection of the changes of the droplet shape, contact angle, and aspect ratio with this parameter. Moreover, a new parameter, global aspect ratio, is introduced to better characterize the distortion of the droplet. It is found that the droplet shape at the equilibrium stage strongly lies on the deposition position when the length ratio is beyond 0.1. Additionally, the lateral displacement is observed when depositing the droplet on the border of two stripes at large length ratios (over 0.1). On the other hand, the Cassie area fraction also has a significant effect on the wetting behaviors. When the droplet is driven by a body force with a 45° inclined angle to the stripes, the moving direction could be strictly in line with the force direction, deviating from the force direction, or totally in line with the stripes, depending on the length ratio.
Langmuir
https://doi.org/10.1021/acs.langmuir.8b02491
Wang, Y., Jian, M., Liu, H., & Zhang, X. (2019). Anisotropic wetting of droplets on stripe-patterned chemically heterogeneous surfaces: effect of length ratio and deposition position. Langmuir, 35(12), 4387-4396. https://doi.org/10.1021/acs.langmuir.8b02491
Wang, Yuxiang ; Jian, Meipeng ; Liu, Huiyuan ; Zhang, Xiwang. / Anisotropic wetting of droplets on stripe-patterned chemically heterogeneous surfaces : effect of length ratio and deposition position. In: Langmuir. 2019 ; Vol. 35, No. 12. pp. 4387-4396.
@article{559ec0a075034c2db3f4e03798fa41a8,
title = "Anisotropic wetting of droplets on stripe-patterned chemically heterogeneous surfaces: effect of length ratio and deposition position",
abstract = "The equilibrium state of a droplet deposited on chemically heterogeneous surfaces is studied by using many-body dissipative particle dynamics. The length ratio covers 2 orders from 0.01 to 1 and allows a systematical inspection of the changes of the droplet shape, contact angle, and aspect ratio with this parameter. Moreover, a new parameter, global aspect ratio, is introduced to better characterize the distortion of the droplet. It is found that the droplet shape at the equilibrium stage strongly lies on the deposition position when the length ratio is beyond 0.1. Additionally, the lateral displacement is observed when depositing the droplet on the border of two stripes at large length ratios (over 0.1). On the other hand, the Cassie area fraction also has a significant effect on the wetting behaviors. When the droplet is driven by a body force with a 45° inclined angle to the stripes, the moving direction could be strictly in line with the force direction, deviating from the force direction, or totally in line with the stripes, depending on the length ratio.",
author = "Yuxiang Wang and Meipeng Jian and Huiyuan Liu and Xiwang Zhang",
doi = "10.1021/acs.langmuir.8b02491",
journal = "Langmuir: the ACS journal of surfaces and colloids",
Wang, Y, Jian, M, Liu, H & Zhang, X 2019, 'Anisotropic wetting of droplets on stripe-patterned chemically heterogeneous surfaces: effect of length ratio and deposition position', Langmuir, vol. 35, no. 12, pp. 4387-4396. https://doi.org/10.1021/acs.langmuir.8b02491
Anisotropic wetting of droplets on stripe-patterned chemically heterogeneous surfaces : effect of length ratio and deposition position. / Wang, Yuxiang; Jian, Meipeng; Liu, Huiyuan; Zhang, Xiwang.
In: Langmuir, Vol. 35, No. 12, 2019, p. 4387-4396.
T1 - Anisotropic wetting of droplets on stripe-patterned chemically heterogeneous surfaces
T2 - effect of length ratio and deposition position
AU - Wang, Yuxiang
AU - Jian, Meipeng
AU - Liu, Huiyuan
AU - Zhang, Xiwang
N2 - The equilibrium state of a droplet deposited on chemically heterogeneous surfaces is studied by using many-body dissipative particle dynamics. The length ratio covers 2 orders from 0.01 to 1 and allows a systematical inspection of the changes of the droplet shape, contact angle, and aspect ratio with this parameter. Moreover, a new parameter, global aspect ratio, is introduced to better characterize the distortion of the droplet. It is found that the droplet shape at the equilibrium stage strongly lies on the deposition position when the length ratio is beyond 0.1. Additionally, the lateral displacement is observed when depositing the droplet on the border of two stripes at large length ratios (over 0.1). On the other hand, the Cassie area fraction also has a significant effect on the wetting behaviors. When the droplet is driven by a body force with a 45° inclined angle to the stripes, the moving direction could be strictly in line with the force direction, deviating from the force direction, or totally in line with the stripes, depending on the length ratio.
AB - The equilibrium state of a droplet deposited on chemically heterogeneous surfaces is studied by using many-body dissipative particle dynamics. The length ratio covers 2 orders from 0.01 to 1 and allows a systematical inspection of the changes of the droplet shape, contact angle, and aspect ratio with this parameter. Moreover, a new parameter, global aspect ratio, is introduced to better characterize the distortion of the droplet. It is found that the droplet shape at the equilibrium stage strongly lies on the deposition position when the length ratio is beyond 0.1. Additionally, the lateral displacement is observed when depositing the droplet on the border of two stripes at large length ratios (over 0.1). On the other hand, the Cassie area fraction also has a significant effect on the wetting behaviors. When the droplet is driven by a body force with a 45° inclined angle to the stripes, the moving direction could be strictly in line with the force direction, deviating from the force direction, or totally in line with the stripes, depending on the length ratio.
U2 - 10.1021/acs.langmuir.8b02491
DO - 10.1021/acs.langmuir.8b02491
JO - Langmuir: the ACS journal of surfaces and colloids
JF - Langmuir: the ACS journal of surfaces and colloids
Wang Y, Jian M, Liu H, Zhang X. Anisotropic wetting of droplets on stripe-patterned chemically heterogeneous surfaces: effect of length ratio and deposition position. Langmuir. 2019;35(12):4387-4396. https://doi.org/10.1021/acs.langmuir.8b02491
10.1021/acs.langmuir.8b02491
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