Transformation thermotics: Thermal metamaterials and their applications

Ji, Qin; Shen, Xiangying; Huang, Jiping

doi:10.1142/s0217979218400040

Cited by 7 publications

(2 citation statements)

References 71 publications

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“…Fan et al [60] and Guenneau et al [61] established the theory of steady-state transformation thermotics and unsteady transformation thermotics. Since then, a large number of thermal metamaterials have been proposed [58,62,63]. The early studies of large-scale thermal metamaterials were focused on utilizing the transformation thermodynamics to design functional structures [64][65][66].…”

Section: Metamaterials and The Current Manufacturing Methodsmentioning

confidence: 99%

Perspective of additive manufacturing for metamaterials development

Shi

2019

Smart Mater. Struct.

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Metamaterials are featured by artificial composite structures with exotic properties, which process promising application potentials in various areas. However, the manufacturing of metamaterials faces great challenges due to the structural complexity, accuracy requirement, and small scale. Additive manufacturing (AM), as a layer-by-layer technique, shows intrinsic advantages in the fabrication of metamaterials. This paper extensively reviews the current state on how and to what extent AM techniques are adopted for metamaterials fabrication, in which the metamaterials are mainly classified into mechanical, acoustic and electromagnetic types. More importantly, the challenges and research opportunities are discussed for AM fabrication of metamaterials, with focus on high precision, multi-structural and multi-material, topology optimization, support structure, anisotropy and heterogeneity, residual stresses and application realization. It is expected that with further innovative solutions being developed to bridge the research gaps, the industries will become more confident to adopt metamaterials in devices and systems for critical applications.

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Section: Metamaterials and The Current Manufacturing Methodsmentioning

confidence: 99%

Perspective of additive manufacturing for metamaterials development

Shi

2019

Smart Mater. Struct.

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“…Engineering anisotropy can be artificially achieved in composite patterns, forming what is known as thermal metamaterials. Similar to the mathematics of transformation Maxwell equation, − researchers have explored the application of manipulating the Fourier heat equation through transformation theory, a field known as transformation thermotics. , The manipulation of heat conduction using transformation theory has garnered significant attention, enabling the artificial manipulation of heat flux and the development of versatile devices for diverse applications. − …”

Section: Application Of Machine Learning and Optimization Algorithms ...mentioning

confidence: 99%

Machine Learning Aided Design and Optimization of Thermal Metamaterials

Zhu,

Bamidele,

Shen

et al. 2024

Chem. Rev.

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Artificial Intelligence (AI) has advanced material research that were previously intractable, for example, the machine learning (ML) has been able to predict some unprecedented thermal properties. In this review, we first elucidate the methodologies underpinning discriminative and generative models, as well as the paradigm of optimization approaches. Then, we present a series of case studies showcasing the application of machine learning in thermal metamaterial design. Finally, we give a brief discussion on the challenges and opportunities in this fast developing field. In particular, this review provides: (1) Optimization of thermal metamaterials using optimization algorithms to achieve specific target properties. (2) Integration of discriminative models with optimization algorithms to enhance computational efficiency. (3) Generative models for the structural design and optimization of thermal metamaterials.

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Thermal Metamaterials for Temperature Maintenance: From Advances in Heat Conduction to Future Convection Prospects

Zhou

2024

Diffusionics

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Maintaining temperature is crucial in both daily life and industrial settings, ensuring human comfort and device functionality. In the quest for energy conservation and emission reduction, several contemporary passive temperature control technologies have emerged, including phase change temperature control, shape memory alloys, solar thermal utilization, sky radiation cooling, and heat pipe systems. However, there is a pressing need for more quantitative methods to further optimize temperature maintenance. With advancements in theoretical thermotics and the emergence of thermal metamaterials, it is clear that temperature fields can be precisely manipulated by fine-tuning thermal and structural parameters. This chapter introduces three innovative devices: the energy-free thermostat, the negative-energy thermostat, and the multi-temperature maintenance container. All are grounded in the principles of thermal metamaterials and primarily operate under conduction heat transfer conditions. When compared with traditional technologies, the unparalleled efficacy of thermal metamaterials in temperature management is evident. Moreover, brief prospects present strategies to improve temperature maintenance under convection heat transfer, thus expanding the application spectrum of thermal metamaterials. This chapter concludes by spotlighting the evolution and interplay of the aforementioned three devices, marking the progression of thermal metamaterials from theoretical ideas to tangible engineering solutions. These insights not only bridge the gap between applied physics and engineering but also underscore the practical potential of thermal metamaterials.

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Transformation thermotics: Thermal metamaterials and their applications

Cited by 7 publications

References 71 publications

Perspective of additive manufacturing for metamaterials development

Perspective of additive manufacturing for metamaterials development

Machine Learning Aided Design and Optimization of Thermal Metamaterials

Thermal Metamaterials for Temperature Maintenance: From Advances in Heat Conduction to Future Convection Prospects

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