Quasi-Casimir coupling can induce thermal resonance of adsorbed liquid layers in a nanogap
Quasi-Casimir coupling can induce thermal resonance of adsorbed liquid layers in a nanogap
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准卡西米尔耦合可以引起纳米间隙中吸附液体层的热共振
DOI：
10.1039/d2cp01094a
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发表时间：
2022
影响因子：
3.3
通讯作者：
Nagayama Gyoko
中科院分区：
文献类型：
--
作者：
Chen Wentao;Nagayama Gyoko
在真空纳米间隙中，在没有电磁场的情况下，可以通过准Casimir耦合诱导声子热传递。然而，目前还不清楚声子是否可以通过吸附在固体表面上的固体状液体层穿过纳米间隙传输。在这里，我们阐明，声子传输通过纳米间隙可以诱导准Casimir耦合通过吸附液体层使用经典的非平衡分子动力学模拟。我们通过调节差距距离来验证固液或液液界面层之间存在准Casimir耦合。热共振可以诱导两个液体层之间的准Casimir耦合，搅拌界面固体层之间的热共振的共同发生，而液体单层干扰的共振。液体层之间的热共振导致更大的热通量和热间隙的间隙相比，在真空间隙的情况下，而液体层限制了声声子在界面固体层中的传输。对固液界面准卡西米尔传热的基本理解可以为未来的纳米级能量传输和热管理铺平道路。
In a vacuum nanogap, phonon heat transfer can be induced by quasi-Casimir coupling in the absence of electromagnetic fields. However, it is unknown whether phonons can be transmitted across a nanogap via solid-like liquid layers adsorbed on solid surfaces. Here, we elucidate that phonon transmission across a nanogap can be induced by quasi-Casimir coupling via adsorbed liquid layers using classical nonequilibrium molecular dynamics simulation. We modulated the gap distance to verify the existence of quasi-Casimir coupling between interfacial solid–liquid or liquid–liquid layers. Thermal resonance can be induced between two liquid layers by quasi-Casimir coupling, agitating the co-occurrence of thermal resonance between interfacial solid layers, while a liquid monolayer disturbs the resonance. The thermal resonance between liquid layers results in a larger heat flux and thermal gap conductance compared with those in the vacuum gap case, while the liquid layer limits the acoustic phonon transmission in the interfacial solid layers. The fundamental understanding of quasi-Casimir heat transfer at the solid–liquid interface could pave the way for future nanoscale energy transport and thermal management.