Barocaloric effect on graphene

Ma, Ning; Reis, M. S.

doi:10.1038/s41598-017-13515-9

Cited by 22 publications

(24 citation statements)

References 21 publications

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“…17,18 Recently, another caloric effect based on mechanical force input, known as the mechanocaloric effect, has been demonstrated in this class of materials. 15,19,20 The elastocaloric effect has been widely reported in shape memory alloys and a few polymers where the cooling magnitude and coefficient of performance were found to be superior to the electrocaloric effect in ferroelectric materials. 21,22 Interestingly, the elastocaloric effect has also been observed in ferroelectric materials.…”

Section: Introductionmentioning

confidence: 99%

Vibration induced refrigeration and energy harvesting using piezoelectric materials: a finite element study

Kumar

Jain

et al. 2019

RSC Adv.

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In this study, the bi-functional performance of a small-scale piezoelectric cantilever, which coupled piezoelectric and elastocaloric phenomena in a single device to produce energy harvesting as well as refrigeration effects due to vibration, has been investigated. Finite element modeling has been used to examine the performance of the device. The basic structure of the device is a cantilever that vibrates between two thermal bodies (hot and cold). The properties of BaTiO 3 (single crystal) were used to examine the bi-functional performance of piezoelectric cantilevers. In this study, different cases have been investigated, which are based on a number of cantilevers between hot and cold thermal bodies.When the number of cantilevers is one, the net cooling is 0.3 K and the power is 0.03 mW, while for four cantilevers, the net cooling is 1.2 K and 0.13 mW of power is produced. The results show that as we increase the number of cantilevers, a greater refrigeration effect is produced and higher power across the electrical load is achieved. Fig. 8 Refrigeration effects due to the elastocaloric effect for different numbers of cantilevers: (a) n ¼ 1; (b) n ¼ 2; and (c) n ¼ 4. (d) The final time (to achieve maximum cooling) vs. the achieved cooling temperature for different numbers of cantilevers.3924 | RSC Adv., 2019,9,[3918][3919][3920][3921][3922][3923][3924][3925][3926] This journal is

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Section: Introductionmentioning

confidence: 99%

Vibration induced refrigeration and energy harvesting using piezoelectric materials: a finite element study

Kumar

Jain

et al. 2019

RSC Adv.

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“…From a fundamental point of view, the magnetocaloric effect (MCE) consists of the temperature variation of a material due to the change of a magnetic field to which it is subjected [ 1 , 2 , 3 , 4 , 5 , 6 , 7 ]. Nowadays the research of the MCE effect reawakens a strong interest in the scientific community again [ 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 ]. We highlight the works associated with high-temperature caloric materials [ 21 ], antiferromagnetic and ferromagnetic interactions [ 8 , 15 , 29 , 30 ], heavy lanthanides [ 31 ], Fe-Rh alloys [ 32 ], among others.…”

Section: Introductionmentioning

confidence: 99%

“…In particular, our interest lies in the oscillations of the MCE due the possibility of a wider range of technological applications. In this direction, Reis et al [ 33 , 34 , 35 , 36 , 37 , 38 ], describe the oscillations of the magnetocaloric effect in diamagnetic systems (specially in graphene) that can be potentially applied in the construction of magnetic sensors.…”

Section: Introductionmentioning

confidence: 99%

Magnetocaloric Effect in an Antidot: The Effect of the Aharonov-Bohm Flux and Antidot Radius

Negrete

Peña

Vargas

2018

Entropy

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In this work, we report the magnetocaloric effect (MCE) for an electron interacting with an antidot, under the effect of an Aharonov-Bohm flux (AB-flux) subjected to a parabolic confinement potential. We use the Bogachek and Landman model, which additionally allows the study of quantum dots with Fock-Darwin energy levels for vanishing antidot radius and AB-flux. We find that AB-flux strongly controls the oscillatory behaviour of the MCE, thus acting as a control parameter for the cooling or heating of the magnetocaloric effect. We propose a way to detect AB-flux by measuring temperature differences.

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“…al. [32][33][34][35][36][37], where they describe the oscillations of the magnetocaloric effect, finding materials (specially in graphene) with a strong potential application in magnetic sensors.…”

Section: Introductionmentioning

confidence: 99%

Magnetocaloric Effect in an Antidot : The Effect of the Aharonov-Bohm Flux and Antidot Radius

Negrete

Peña

Vargas

2018

Preprint

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In this work, we report the magnetocaloric effect (MCE) in a quantum dot corresponding to an electron interacting with an antidot, under the effect of an Aharonov-Bohm flux subjected to a parabolic confinement potential. We use the Bogachek and Landman model, which additionally allows the study of quantum dots with Fock-Darwin energy levels for vanishing antidot radius and flux. We find that the Aharonov-Bohm flux (AB-flux) strongly controls the oscillatory behaviour of the MCE, thus acting as a control parameter for the cooling or heating of the magnetocaloric effect. We propose a way to detect AB-flux by measuring temperature differences.

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Barocaloric effect on graphene

Cited by 22 publications

References 21 publications

Vibration induced refrigeration and energy harvesting using piezoelectric materials: a finite element study

Vibration induced refrigeration and energy harvesting using piezoelectric materials: a finite element study

Magnetocaloric Effect in an Antidot: The Effect of the Aharonov-Bohm Flux and Antidot Radius

Magnetocaloric Effect in an Antidot : The Effect of the Aharonov-Bohm Flux and Antidot Radius

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