Ultrafast Impact Superspreading on Superamphiphilic Silicon Surfaces for Effective Thermal Management

Zhu, Zhongpeng; Chen, Yupeng; Luo, Xianfeng; Miao, Weining; Dong, Zhichao; Zhou, Jiajia; Tian, Ye; Jiang, Lei

doi:10.1021/jacs.3c01394

Cited by 10 publications

(2 citation statements)

References 39 publications

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“…Figure summarizes a variety of applications utilizing droplet impact, and divides four quadrants according to their requirements for droplet contact and rebound. In the first quadrant, there are applications requiring expanding contact area, extending contact time and weakening droplet rebound, such as thermal cooling, [ 12,154 ] spray coating, [ 155,156 ] and water harvesting. [ 1,157 ] Enhancing the adhesion of droplets on surfaces and intensifying the heat and mass transfer are important pathways to improve the performance of these applications.…”

Section: Applications By Tailoring Droplet Contact and Reboundmentioning

confidence: 99%

Understanding and Utilizing Droplet Impact on Superhydrophobic Surfaces: Phenomena, Mechanisms, Regulations, Applications, and Beyond

Hu,

Chu,

Shan

et al. 2023

Advanced Materials

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Droplet impact is a ubiquitous liquid behavior that closely tied to human life and production, making indispensable impacts on the big world. Nature‐inspired superhydrophobic surfaces provide a powerful platform for regulating droplet impact dynamics. The collision between classic phenomena of droplet impact and the advanced manufacture of superhydrophobic surfaces is lighting up the future. Accurately understanding, predicting, and tailoring droplet dynamic behaviors on superhydrophobic surfaces are progressive steps to integrate the droplet impact into versatile applications and further improve the efficiency. In this review, the progress on phenomena, mechanisms, regulations, and applications of droplet impact on superhydrophobic surfaces, bridging the gap between droplet impact, superhydrophobic surfaces, and engineering applications are comprehensively summarized. It is highlighted that droplet contact and rebound are two focal points, and their fundamentals and dynamic regulations on elaborately designed superhydrophobic surfaces are discussed in detail. For the first time, diverse applications are classified into four categories according to the requirements for droplet contact and rebound. The remaining challenges are also pointed out and future directions to trigger subsequent research on droplet impact from both scientific and applied perspectives are outlined. The review is expected to provide a general framework for understanding and utilizing droplet impact.

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Section: Applications By Tailoring Droplet Contact and Reboundmentioning

confidence: 99%

Understanding and Utilizing Droplet Impact on Superhydrophobic Surfaces: Phenomena, Mechanisms, Regulations, Applications, and Beyond

Hu,

Chu,

Shan

et al. 2023

Advanced Materials

Self Cite

View full text Add to dashboard Cite

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“…Given the importance of wetting and spreading behaviors of water in high-temperature and high-pressure applications, such as boiling heat transfer in nuclear reactors, spray cooling, and carbon geo-storage, the temperature dependence of the contact angles of water has been explored since the 1960s. , A recent review provided a state-of-the-art review on this topic by focusing on how temperature affects the wetting behavior of water on solid surfaces.…”

Section: Introductionmentioning

confidence: 99%

Temperature Dependence of the Dynamic Contact Angles of Water on a Smooth Stainless-Steel Surface under Elevated Pressures

Fu,

Li,

Fan

2024

Langmuir

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The temperature dependence of the dynamic contact angles (DCAs) of water on a metallic surface remains unclear, especially under elevated pressures. Here in this work, the advancing and receding contact angles (RCAs), as well as the contact angle hysteresis (CAH), of water on stainless-steel 316 (SS316) surfaces were studied using the dynamic sessile drop method for temperatures up to 300 °C and pressures up to 10 MPa. It was found that the temperature dependence of the DCAs exhibits a different pattern as compared to the piecewise linear decline of static contact angles. The advancing contact angle (ACA) remains nearly constant and does not decrease until the temperature becomes close to the saturated temperature. The decrease in ACA is attributed to evaporation, which reduces the advancement of energy barrier. The RCA linearly declines below 120 °C and remains stable above 120 °C. The increasing temperature enhances the pinning effect and changes the droplet receding mode. Under all pressures tested, the CAH demonstrates a "increaseconstant-decrease" trilinear relationship with temperature. Furthermore, the mean solid surface entropy and solid−gas interfacial tension of SS316 were estimated to be 0.1152 mJ/(m 2 •°C) and 61.49 mJ/m 2 , respectively.

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Superspreading Surface with Hierarchical Porous Structure for Highly Efficient Vapor–Liquid Phase Change Heat Dissipation

Liu,

Fu,

et al. 2024

Small

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Superspreading surfaces with excellent water transport efficiency are highly desirable for addressing thermal failures through the liquid–vapor phase change of water in electronics thermal management applications. However, the trade‐off between capillary pressure and viscous resistance in traditional superspreading surfaces with micro/ nanostructures poses a longstanding challenge in the development of superspreading surfaces with high cooling efficiency in confined spaces. Herein, a heat‐treated hierarchical porous enhanced superspreading surface (HTHP) for highly efficient electronic cooling is proposed. Compared with the single porous structures in nanograss, nanosheets, and copper foam, HTHP with hierarchical honeycomb pores effectively resolves the trade‐off effect by introducing large vertical through‐pores to reduce viscous resistance, and connected small pores to provide sufficient capillary pressure synergistically. HTHP exhibits excellent capillary performance in both horizontal spreading and vertical rising. Despite a thickness of only 0.33 mm, the as‐prepared ultrathin vapor chamber (UTVC) fabricated to exploit the superior capillary performance of HTHP achieved effective heat dissipation with outstanding thermal conductivity (12 121 Wm−1K−1), and low thermal resistance (0.1 KW−1) at a power of 5 W. This regulation strategy based on hierarchical honeycomb porous structures is expected to promote the development of high‐performance superspreading surfaces with a wide range of applications in thermal management.

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Ultrafast Impact Superspreading on Superamphiphilic Silicon Surfaces for Effective Thermal Management

Cited by 10 publications

References 39 publications

Understanding and Utilizing Droplet Impact on Superhydrophobic Surfaces: Phenomena, Mechanisms, Regulations, Applications, and Beyond

Understanding and Utilizing Droplet Impact on Superhydrophobic Surfaces: Phenomena, Mechanisms, Regulations, Applications, and Beyond

Temperature Dependence of the Dynamic Contact Angles of Water on a Smooth Stainless-Steel Surface under Elevated Pressures

Superspreading Surface with Hierarchical Porous Structure for Highly Efficient Vapor–Liquid Phase Change Heat Dissipation

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