Controlling Chemical Waves by Transforming Transient Mass Transfer

Zhang, Zeren; Xu, Liujun; Huang, Jiping

doi:10.1002/adts.202100375

Cited by 12 publications

(1 citation statement)

References 52 publications

(46 reference statements)

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“…However, the case is distinctly different in the transient state. Equation (2) at transient state could be reduced to [21]…”

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confidence: 99%

Transformation Plasma Physics

Zhang¹,

Huang²

2022

Chinese Phys. Lett.

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Plasma technology has been broadly utilized in many fields, whereas the methods for manipulating plasma transport are limited to magnetic control. In this work, we choose a simplified diffusion-migration approach to describing plasma transport. On this basis, we show the feasibility of the transformation theory for plasma transport. As potential applications, we design three model devices functioning as cloaking, concentrating, and rotating plasmas without obviously disturbing the density profile of plasmas in the background. This research may be helpful in improving plasma technology in practical fields, such as medicine and chemistry.

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“…However, the case is distinctly different in the transient state. Equation (2) at transient state could be reduced to [21]…”

mentioning

confidence: 99%

Transformation Plasma Physics

Zhang¹,

Huang²

2022

Chinese Phys. Lett.

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Diffusionics: Basic Theory and Theoretical Framework

Zhuang

2024

Diffusionics

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Diffusionics, distinct from traditional physical laws, focuses on designing material parameters to actively control diffusion fields. The introduction of transformation theory provides a novel method to achieve active control of diffusion transport, leading to the design of devices with unique functions such as cloaks, concentrators, and rotators. However, materials corresponding to the parameters designed by transformation theory are challenging to find in nature. Therefore, the spatial arrangement of one or multiple materials to effectively achieve the desired parameters has become an alternative approach, indirectly spurring the development of metamaterials. This article reviews the fundamental theories and theoretical framework in diffusion science. We first introduce the basic concept of transformation theory, followed by a review of alternative theories such as effective medium theory and scattering cancellation theory. To study topological phenomena in diffusion systems and space-time modulated systems, the foundations of quantum mechanics, namely matrix mechanics and wave mechanics, are employed. Lastly, the article summarizes some challenges in diffusion science theory, which may be addressed by other methods in the future, such as transformation field methods and machine learning approaches.

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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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Controlling Chemical Waves by Transforming Transient Mass Transfer

Cited by 12 publications

References 52 publications

Transformation Plasma Physics

Transformation Plasma Physics

Diffusionics: Basic Theory and Theoretical Framework

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

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