Cloaking of Thermoelectric Transport

Stedman, Troy; Woods, Lilia M.

doi:10.1038/s41598-017-05593-6

Cited by 33 publications

(33 citation statements)

References 54 publications

(88 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Cloaking of coupled thermoelectric transport was firstly proposed theoretically in Ref. [37]. Unprecedentedly, a definite method for manipulating coupled thermoelectric domains in a single device was given, which can be generalized to other multiphysics domains.…”

Section: Thermoelectric Thermostat Cloak As An Extension To the mentioning

confidence: 99%

Negative Energy Consumption of Thermostats at Ambient Temperature: Electricity Generation with Zero Energy Maintenance

2019

View full text Add to dashboard Cite

Thermal maintenance costs 15% of global energy. The concept of an "energy-free thermostat" was accordingly proposed to change environmental temperature gradients, which can maintain a certain space at constant temperature without the need to consume additional energy according to a temperature-trapping theory [Shen et al., Phys. Rev. Lett. 117, 055501 (2016)]. Here we develop the theory by introducing thermoelectric effects, and we then propose a "negative-energy thermostat" that generates electricity associated with energy-free maintenance of a constant ambient temperature. The thermostat further helps to design a different thermoelectric cloak: for changing ambient temperature gradients, its central region has an approximately constant temperature and potential while simultaneously generating thermoelectromotive forces. Our finite-element simulations confirm the effects predicted by the theory developed, and we also discuss the possibility of experimental demonstration with natural materials. This work not only has relevance for expanding the temperature-trapping theory by achieving thermoelectric conversion synergistically but also offers a different method to manipulate coupled fields in electrothermotics; it also gives hints on how to control other coupled fields in photothermotics, photoelectrics, electromagnetics, thermomagnetics, and thermomechanics.

show abstract

Section: Thermoelectric Thermostat Cloak As An Extension To the mentioning

confidence: 99%

Negative Energy Consumption of Thermostats at Ambient Temperature: Electricity Generation with Zero Energy Maintenance

2019

View full text Add to dashboard Cite

show abstract

“…The governing equations are required to remain invariant under such a diffeomorphism, which results in transformed fields and materials properties. The mathematical expressions for TO applied to thermoelectricity are obtained as [21]…”

Section: Theoretical Concepts and Basic Equationsmentioning

confidence: 99%

“…The dimensions of the simulation, background color, isotherms and equipotentials, and currents notation in each case are the same as in figure 1. [21]), while the layer conductivities for the diffuser are taken as s s…”

Section: Laminate Thermoelectric Mmsmentioning

confidence: 99%

“…Specifically, in systems with a significant Seebeck coefficient, the diffusive transport cannot be described by the Fourier and Ohm's laws, and TE effects have to be taken into account. Recent work has shown that the thermodynamic governing equations for TE transport are invariant under coordinate transformations and by utilizing TO, MMs for TE cloaking can be constructed [21]. This development is a significant step towards accessing a multi-physics range of action, such that the proposed TE cloak can operate as a thermal cloak (under a thermal gradient only), an electric cloak (under a potential gradient only), and under general TE boundary conditions.…”

Section: Introductionmentioning

confidence: 99%

“…The MMs can further be evaluated quantitatively by using the standard deviations of temperature and potential differences between the ideal system and the MMs [21,24], defined respectively as…”

mentioning

confidence: 99%

See 2 more Smart Citations

Transformation optics for thermoelectric flow

2019

Self Cite

View full text Add to dashboard Cite

Transformation optics (TO) is a powerful technique for manipulating diffusive transport, such as heat and electricity. While most studies have focused on individual heat and electrical flows, in many situations thermoelectric effects captured via the Seebeck coefficient may need to be considered. Here we apply a unified description of TO to thermoelectricity within the framework of thermodynamics and demonstrate that thermoelectric flow can be cloaked, diffused, rotated, or concentrated. Metamaterial composites using bilayer components with specified transport properties are presented as a means of realizing these effects in practice. The proposed thermoelectric cloak, diffuser, rotator, and concentrator are independent of the particular boundary conditions and can also operate in decoupled electric or heat modes.

show abstract

Multiple control of thermoelectric dual‐function metamaterials

Zhuang

Huang

2023

Int Journal of Mech Sys Dyn

View full text Add to dashboard Cite

Thermal metamaterials based on transformation theory offer a practical design for controlling heat flow by engineering spatial distributions of material parameters, implementing interesting functions such as cloaking, concentrating, and rotating. However, most existing designs are limited to serving a single target function within a given physical domain. Here, we analytically prove the form invariance of thermoelectric (TE) governing equations, ensuring precise controls of the thermal flux and electric current. Then, we propose a dual‐function metamaterial that can concentrate (or cloak) and rotate the TE field simultaneously. In addition, we introduce two practical control methods to realize corresponding functions: one is a temperature‐switching TE rotating concentrator cloak that can switch between cloaking and concentrating; the other is an electrically controlled TE rotating concentrator that can handle the temperature field precisely by adjusting external voltages. The theoretical predictions and finite‐element simulations agree well with each other. This work provides a unified framework for manipulating the direction and density of the TE field simultaneously and may contribute to the study of thermal management, such as thermal rectification and thermal diodes.

show abstract

Cloaking of Thermoelectric Transport

Cited by 33 publications

References 54 publications

Negative Energy Consumption of Thermostats at Ambient Temperature: Electricity Generation with Zero Energy Maintenance

Negative Energy Consumption of Thermostats at Ambient Temperature: Electricity Generation with Zero Energy Maintenance

Transformation optics for thermoelectric flow

Multiple control of thermoelectric dual‐function metamaterials

Contact Info

Product

Resources

About