Two dimensional confinement induced discontinuous chain transitions for augmented electrocaloric cooling [PDF]
Nature CommunicationsOverheating remains a major barrier to chip miniaturization, leading to device malfunction. Addressing the urgent need for thermal management promotes the development of solid-state electrocaloric cooling.
Fang Wang +8 more
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Electrocaloric effect in ferroelectric nanowires from atomistic simulations. [PDF]
Sci Rep, 2015 AbstractElectrocaloric effect is presently under active investigation owing to both the recent discoveries of giant electrocaloric effects and its potential for solid state cooling applications. We use first-principles-based direct simulations to predict the electrocaloric temperature change in ferroelectric ultrathin nanowires.
Herchig R +3 more
europepmc +4 more sources
Low-k nano-dielectrics facilitate electric-field induced phase transition in high-k ferroelectric polymers for sustainable electrocaloric refrigeration [PDF]
Nature CommunicationsFerroelectric polymer-based electrocaloric effect may lead to sustainable heat pumps and refrigeration owing to the large electrocaloric-induced entropy changes, flexible, lightweight and zero-global warming potential.
Qiang Li +11 more
doaj +2 more sources
Multiscale-engineered ferroelectric ceramics exhibiting superior electrocaloric performance [PDF]
Nature CommunicationsElectrocaloric effect referring to reversible temperature change (ΔT) under electrical excitation provides a promising alternative for next-generation thermal management. The ΔT essentially derives from the polarization change of polar system.
Xiaowei Wei +9 more
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Dual‐Functional High‐Entropy Polymer Exhibiting Giant Cross‐Energy Couplings at Low Fields [PDF]
Small ScienceA key component of cooling devices is the transfer of entropy from the cold load to heat sink. An electrocaloric (EC) polymer capable of generating both large electrocaloric effect (ECE) and substantial electroactuation can enable EC cooling devices to ...
Guanchun Rui +15 more
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Electronic cooling and energy harvesting using ferroelectric polymer composites [PDF]
Nature CommunicationsThermal management emerges as a grand challenge of next-generation electronics. Efforts to develop compact, solid-state cooling devices have led to the exploration of the electrocaloric effect of ferroelectric polymers.
Kailun Zou +10 more
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Electrocaloric effects in multiferroics [PDF]
Physical Review B, 2021 An atomistic effective Hamiltonian is used to compute electrocaloric (EC) effects in rare-earth substituted BiFeO$_{3}$ multiferroics. A phenomenological model is then developed to interpret these computations, with this model indicating that the EC coefficient is the sum of two terms, that involve electric quantities (polarization, dielectric response)
Zhijun Jiang +6 more
openaire +2 more sources
Direct measurement of electrocaloric effect in P(VDF-TrFE-CFE) film using infrared imaging
Journal of Materiomics, 2023 Poly (vinylidene fluoride-trifluoroethylene-chlorofluoroethylene) P(VDF-TrFE-CFE) is a relaxor ferroelectric polymer, which exhibits a temperature-independent electrocaloric effect at room temperature.
Ashwath Aravindhan +9 more
doaj +1 more source
The electrocaloric effect of lead-free Ba1−yCayTi1−xHfxO3 from direct and indirect measurements
APL Materials, 2023 We report on the dielectric and electrocaloric properties of Ba1−yCayTi1−xHfxO3 for compositions 0.12 < x < 0.18 and y = 0.06, as well as x = 0.15 and 0 < y < 0.15, synthesized by the conventional solid-state reaction method.
David Gracia +3 more
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Ferroelectric Smectic Liquid Crystals as Electrocaloric Materials
Crystals, 2022 The 1980s saw the development of ferroelectric chiral smectic C (SmC*) liquid crystals (FLCs) with a clear focus on their application in fast electro-optic devices.
Peter John Tipping +1 more
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