Results 11 to 20 of about 1,072 (164)

Understanding colossal barocaloric effects in plastic crystals [PDF]

open access: yesNature Communications, 2020
Colossal barocaloric effects with high entropy changes is reported in plastic crystal neopentylglycol, while microscopic mechanism needs to be further explored.
F. B. Li   +9 more
doaj   +5 more sources

Inverse barocaloric effects in ferroelectric BaTiO3 ceramics [PDF]

open access: yesAPL Materials, 2016
We use calorimetry to identify pressure-driven isothermal entropy changes in ceramic samples of the prototypical ferroelectric BaTiO3. Near the structural phase transitions at ∼400 K (cubic-tetragonal) and ∼280 K (tetragonal-orthorhombic), the inverse ...
E. Stern-Taulats   +9 more
doaj   +13 more sources

Colossal Reversible Barocaloric Effects in a Plastic Crystal Mediated by Lattice Vibrations and Ion Diffusion [PDF]

open access: yesAdvanced Science
Solid‐state methods for cooling and heating promise a sustainable alternative to current compression cycles of greenhouse gases and inefficient fuel‐burning heaters.
Ming Zeng   +10 more
doaj   +3 more sources

Colossal barocaloric effects near room temperature in plastic crystals of neopentylglycol [PDF]

open access: yesNature Communications, 2019
There is great interest, in refrigeration technology, in replacing harmful volatile hydrofluorocarbons with solid materials. Here the authors show that commercially available plastic crystal neopentylglycol displays colossal and reversible barocaloric ...
P. Lloveras   +11 more
doaj   +10 more sources

Barocaloric Properties of Thermoplastic Elastomers

open access: yesFrontiers in Energy Research, 2022
Solid-state refrigeration represents a promising alternative to vapor compression refrigeration systems which are inefficient, unreliable, and have a high global warming potential. However, several solid-state cooling technologies—including those relying
Naveen Weerasekera   +5 more
doaj   +2 more sources

Giant barocaloric effect in commercial polyurethane

open access: yesPolymer Testing, 2021
Barocaloric effect in polymers is barely recognized and limited to a few reports in the literature. This effect consists of a thermal response of the material when a hydrostatic pressure is applied, allowing its application in the field of solid-state ...
Jean Rodrigo Bocca   +9 more
doaj   +2 more sources

Giant barocaloric effects in formamidinium iodide [PDF]

open access: yesAPL Materials, 2022
Barocaloric effect is the thermal response of materials to the external pressures, which provides a promising alternative to the current vapor-compression refrigeration. The effect has been widely observed in a variety of materials. Here, we report giant
Chenyang Yu   +7 more
doaj   +2 more sources

Electrocaloric and barocaloric effects in CsH_2PO_4 ferroelectric

open access: yesCondensed Matter Physics, 2022
To investigate the caloric effects in the CsH_2PO_4 ferroelectric, a modified pseudospin model of this crystal is used, which takes into account the dependence of the parameters of interaction between pseudospins on lattice strains.
A. S. Vdovych   +2 more
doaj   +3 more sources

Raman Spectroscopy Studies on the Barocaloric Hybrid Perovskite [(CH3)4N][Cd(N3)3] [PDF]

open access: yesMolecules, 2020
Temperature-dependent Raman scattering and differential scanning calorimetry were applied to the study of the hybrid organic-inorganic azide-perovskite [(CH3)4N][Cd(N3)3], a compound with multiple structural phase transitions as a function of temperature.
Rosivaldo Xavier da Silva   +7 more
doaj   +2 more sources

Giant Inverse Barocaloric Effect of Ferroelectric Salts Driven by Negative Thermal Expansion

open access: yesAdvanced Physics Research
Refrigeration technologies based on the barocaloric effect have garnered significant attention, while their potential applications are limited by the poor performance of current materials.
Yin Dai, Menghao Wu
doaj   +2 more sources

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