Negative/Positive Electrocaloric Effect in Single-Layer Pb(ZrₓTi1–x )O₃ Thin Films for Solid-State Cooling Device

2020 ◽  
Vol 67 (4) ◽  
pp. 1769-1775
Author(s):  
Sankar Prasad Bag ◽  
Xu Hou ◽  
Jingtong Zhang ◽  
Shuanghao Wu ◽  
Jie Wang
Keyword(s):  
Thin Films ◽  
Solid State ◽  
Single Layer ◽  
Cooling Device ◽  
Electrocaloric Effect ◽  
Solid State Cooling

scholarly journals Tailoring the electrocaloric effect of Pb0.78Ba0.2La0.02ZrO3 relaxor thin film by GaN substrates

2019 ◽  
Vol 7 (45) ◽  
pp. 14109-14115 ◽  
Author(s):  
Biaolin Peng ◽  
Jintao Jiang ◽  
Silin Tang ◽  
Miaomiao Zhang ◽  
Laijun Liu ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Solid State ◽  
Electrocaloric Effect ◽  
Cooling Devices ◽  
Potential Applications ◽  
Solid State Cooling

The electrocaloric (EC) effect in ferroelectric/antiferroelectric thin films has been widely investigated due to its potential applications in solid state cooling devices.

scholarly journals Decoupling electrocaloric effect from Joule heating in a solid state cooling device

2011 ◽  
Vol 99 (23) ◽  
pp. 232908 ◽  
Author(s):  
M. Quintero ◽  
L. Ghivelder ◽  
F. Gomez-Marlasca ◽  
F. Parisi
Keyword(s):  
Solid State ◽  
Joule Heating ◽  
Cooling Device ◽  
Electrocaloric Effect ◽  
Solid State Cooling

Electrocaloric effect in relaxor ferroelectric polymer nanocomposites for solid-state cooling

2020 ◽  
Vol 8 (33) ◽  
pp. 16814-16830
Author(s):  
Hailong Hu ◽  
Fan Zhang ◽  
Shibin Luo ◽  
Jianling Yue ◽  
Chun-Hui Wang
Keyword(s):  
Solid State ◽  
Polymer Nanocomposites ◽  
Relaxor Ferroelectric ◽  
Cooling Efficiency ◽  
Electrocaloric Effect ◽  
Ferroelectric Polymer ◽  
Solid State Cooling

Ferroelectric polymer nanocomposites demonstrate improved adiabatic change of temperature and isothermal change of entropy and markedly enhanced heating–cooling efficiency.

scholarly journals Solid-state cooling by elastocaloric polymer with uniform chain-lengths

2022 ◽  
Vol 13 (1) ◽  
Author(s):  
Shixian Zhang ◽  
Quanling Yang ◽  
Chenjian Li ◽  
Yuheng Fu ◽  
Huaqing Zhang ◽  
...  
Keyword(s):  
Solid State ◽  
Conformational Changes ◽  
Room Temperature ◽  
Entropy Change ◽  
Cooling Device ◽  
Elastocaloric Effect ◽  
Adiabatic Temperature Change ◽  
Cooling Devices ◽  
Chain Lengths ◽  
Solid State Cooling

AbstractAlthough the elastocaloric effect was found in natural rubber as early as 160 years ago, commercial elastocaloric refrigeration based on polymer elastomers has stagnated owing to their deficient elastocaloric effects and large extension ratios. Herein, we demonstrate that polymer elastomers with uniform molecular chain-lengths exhibit enormous elastocaloric effects through reversible conformational changes. An adiabatic temperature change of −15.3 K and an isothermal entropy change of 145 J kg−1 K−1, obtained from poly(styrene-b-ethylene-co-butylene-b-styrene) near room temperature, exceed those of previously reported elastocaloric polymers. A rotary-motion cooling device is tailored to high-strains characteristics of rubbers, which effectively discharges the cooling energy of polymer elastomers. Our work provides a strategy for the enhancement of elastocaloric effects and could promote the commercialization of solid-state cooling devices based on polymer elastomers.

The coexistence of the negative and positive electrocaloric effect in ferroelectric thin films for solid-state refrigeration

2013 ◽  
Vol 102 (4) ◽  
pp. 47004 ◽  
Author(s):  
B. Li ◽  
J. B. Wang ◽  
X. L. Zhong ◽  
F. Wang ◽  
Y. K. Zeng ◽  
...  
Keyword(s):  
Thin Films ◽  
Solid State ◽  
Ferroelectric Thin Films ◽  
Electrocaloric Effect

Cross-plane thermoelectric Seebeck coefficients in nanoscale Al2O3/ZnO superlattice films

2019 ◽  
Vol 7 (6) ◽  
pp. 1670-1680 ◽  
Author(s):  
Yo-Seop Yoon ◽  
Won-Yong Lee ◽  
No-Won Park ◽  
Gil-Sung Kim ◽  
Rafael Ramos ◽  
...  
Keyword(s):  
Thin Films ◽  
Thermal Conductivity ◽  
Solid State ◽  
Power Factor ◽  
Electrical Power ◽  
Small Scale ◽  
Low Thermal Conductivity ◽  
Seebeck Coefficients ◽  
Low Dimensionality ◽  
Solid State Cooling

Superlattice thin films, which are used in thermoelectric (TE) devices for small-scale solid-state cooling and for generating electrical power, have recently been attracting attention due to their low dimensionality, low thermal conductivity, and enhanced power factor.

TEM studies of solid-state reactions in sputter-deposited Nb/Al multilayer thin films

1996 ◽  
Vol 54 ◽  
pp. 1020-1021
Author(s):  
F. Ma ◽  
S. Vivekanand ◽  
K. Barmak ◽  
C. Michaelsen
Keyword(s):  
Thin Films ◽  
Solid State ◽  
Stoichiometric Composition ◽  
Analytical Electron Microscopy ◽  
Grain Structure ◽  
Solid State Reactions ◽  
Multilayer Thin Films ◽  
X Ray Diffraction ◽  
X Ray ◽  
Sputter Deposited

Solid state reactions in sputter-deposited Nb/Al multilayer thin films have been studied by transmission and analytical electron microscopy (TEM/AEM), differential scanning calorimetry (DSC) and X-ray diffraction (XRD). The Nb/Al multilayer thin films for TEM studies were sputter-deposited on (1102)sapphire substrates. The periodicity of the films is in the range 10-500 nm. The overall composition of the films are 1/3, 2/1, and 3/1 Nb/Al, corresponding to the stoichiometric composition of the three intermetallic phases in this system.Figure 1 is a TEM micrograph of an as-deposited film with periodicity A = dA1 + dNb = 72 nm, where d's are layer thicknesses. The polycrystalline nature of the Al and Nb layers with their columnar grain structure is evident in the figure. Both Nb and Al layers exhibit crystallographic texture, with the electron diffraction pattern for this film showing stronger diffraction spots in the direction normal to the multilayer. The X-ray diffraction patterns of all films are dominated by the Al(l 11) and Nb(l 10) peaks and show a merging of these two peaks with decreasing periodicity.

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