Actively and reversibly controlling thermal conductivity in solid materials

Liu, Chenhan; Wu, Chao; Zhao, Yunshan; Chen, Zuhuang; Ren, Tian-Ling; Chen, Yunfei; Zhang, Gang

doi:10.1016/j.physrep.2024.01.001

Cited by 12 publications

(6 citation statements)

References 278 publications

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“…25,28,53−59 This deformability, along with its high thermal conductivity, render the PDMS-DMA/EGaIn composite an attractive candidate in intelligent thermal management materials. 60 As previously noted, the self-healing capability of the PDMS-DMA/EGaIn composite arises from its dynamic cross-linked network featuring multiple hydrogen bonds and metal coordination. This distinctive feature also endows the material with recyclability.…”

Section: Resultsmentioning

confidence: 88%

“…Compared to liquid metal polymer-based composites prepared through shear mixing, PDMS-DMA/EGaIn exhibits smaller particle size, lower modulus, and higher thermal conductivity (Figure k and Table S1). ,,− This deformability, along with its high thermal conductivity, render the PDMS-DMA/EGaIn composite an attractive candidate in intelligent thermal management materials …”

Section: Resultsmentioning

confidence: 99%

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Mussel-Inspired Polymer-Based Composites for Efficient Thermal Management in Dry and Underwater Environments

Zhang,

He,

et al. 2024

ACS Nano

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To address the escalating power consumption of processors in data centers and the growing emphasis on environmental sustainability, the prospective shift from traditional air-cooling to immersion liquid cooling necessitates multiple functional integrations in polymer-based thermal conductive materials. Here, drawing inspiration from mussels, we showed a copolymer, poly(dimethylsiloxane-co-dopamine methacrylate) (PDMS-DMA), with a variety of reversible molecular interactions and simply combined with liquid metal (EGaIn) can yield a flexible, waterproof, and electrically insulating thermal conductive composite. The obtained PDMS-DMA/EGaIn composites demonstrate a harmonious blend of attributes, including a low modulus (75.8 kPa), high thermal conductivity of 6.9 W m −1 K −1 , and rapid room-temperature self-healing capabilities, capable of complete repair within 20 min, even under water. Based on its electrically insulating and water resistance properties, PDMS-DMA/EGaIn emerges as a promising candidate for efficient and stable heat transfer in both air and underwater thermal management. Consequently, this water-resistant polymer-based composite holds significance for application in thermal protective layers for future immersion liquid cooling systems.

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Section: Resultsmentioning

confidence: 88%

Section: Resultsmentioning

confidence: 99%

Mussel-Inspired Polymer-Based Composites for Efficient Thermal Management in Dry and Underwater Environments

Zhang,

He,

et al. 2024

ACS Nano

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“…Moreover as the metamagnetic FeRh phase transition could induce interesting change in thermal conductivity, thermoelectric (TE) materials including FeRh nanomagnet could be studied to improve the TE figure of merit in the context of waste energy conversion to electricity. 58…”

Section: Discussionmentioning

confidence: 99%

Finite size effects on the metamagnetic phase transition in a thick B2 FeRh nanocluster film

Herrera,

Robert,

Gonzalez

et al. 2024

Nanoscale

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“…The IDBs were examined structurally to find reliable atomic arrangements . However, the comprehensive characteristics of IDBs of these wurtzite nitrides have not been modeled even though the polycrystalline phase with IBDs is known to deteriorate the material properties (e.g., thermal, optical, and piezoelectric properties). − Therefore, in the present study, the atomic and electronic structures for the formation of IDBs of the wurtzite nitrides were modeled using density functional theory (DFT) to examine the underlying mechanism of the formation of the IDB. It was confirmed that the formation of IDBs consisting of grains with different polarities is closely related to the piezo strain tensor of the wurtzite nitride.…”

Section: Introductionmentioning

confidence: 99%

First-Principles Understanding on the Formation of Inversion Domain Boundaries of Wurtzite AlN, AlScN, and GaN

Hwang,

Aigner,

Metzger

et al. 2024

ACS Appl. Electron. Mater.

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Inversion domain boundaries (IDBs) are the major planar defect in piezoelectric wurtzite structures such as AlN, AlScN, and GaN. The IDBs are often found in deposited thin films and are known to be closely related to the performance of the films. However, the detailed atomic and electronic structures of IDBs have not been modeled. In the present study, the atomic structures, thermodynamic stabilities, and electronic and mechanical properties of IDBs in AlN, AlScN, and GaN were modeled using firstprinciples calculations. The result shows that IDB formation is favorable when the piezo strain tensor (d 33 ) is high. AlScN is particularly favorable for IDB formation due to its higher piezo strain tensor and lower bulk modulus compared to AlN and GaN. Furthermore, the structural distortion in IDBs is closely related to an electronic structure change reducing the band gap, thereby increasing leakage current in a piezoelectric device.

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Actively and reversibly controlling thermal conductivity in solid materials

Cited by 12 publications

References 278 publications

Mussel-Inspired Polymer-Based Composites for Efficient Thermal Management in Dry and Underwater Environments

Mussel-Inspired Polymer-Based Composites for Efficient Thermal Management in Dry and Underwater Environments

Finite size effects on the metamagnetic phase transition in a thick B2 FeRh nanocluster film

First-Principles Understanding on the Formation of Inversion Domain Boundaries of Wurtzite AlN, AlScN, and GaN

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