Results 21 to 30 of about 164,976 (267)

CMB temperature and polarization anisotropy fundamentals [PDF]

open access: yesAnnals of Physics, 2003
The tremendous experimental progress in cosmic microwave background (CMB) temperature and polarization anisotropy studies over the last few years has helped establish a standard paradigm for cosmology at intermediate epochs and has simultaneously raised questions regarding the physical processes at the two opposite ends of time.
openaire   +3 more sources

Indirect Evaluation of the Electrocaloric Effect in PbZrTiO3 (20/80)-Based Epitaxial Thin Film Structures

open access: yesElectronic Materials, 2022
Electrocaloric effect is the adiabatic temperature change in a dielectric material when an electric field is applied or removed, and it can be considered as an alternative refrigeration method. Materials with ferroelectric order exhibit large temperature
Georgia A. Boni   +7 more
doaj   +1 more source

Study on Nonlinear Dielectric Properties of Micro Silica

open access: yesEnergies, 2023
Inorganic insulating powder can potentially be used in nuclear power plant cables, fire-resistant cables, and so on due to its high heat resistance and radiation resistance. It is of great academic and engineering value to study the dielectric properties
Yucui Xue   +5 more
doaj   +1 more source

Study on Temperature Characteristics of Ceramic Materials for Piezoelectric Actuators and Model Modification

open access: yesXibei Gongye Daxue Xuebao, 2019
The performance of piezoelectric actuator ceramics under strong electric field(20 kV/cm) and variable temperature (30~150℃) were tested on a piezoelectric ceramic thermo-electro-mechanical multi-field loading test bench. The variation of hysteresis loop,

doaj   +1 more source

Polarization-Encoded Colocalization Microscopy at Cryogenic Temperatures [PDF]

open access: yesACS Photonics, 2020
Super-resolution localization microscopy is based on determining the positions of individual fluorescent markers in a sample. The major challenge in reaching an ever higher localization precision lies in the limited number of collected photons from single emitters.
Daniel Böning   +2 more
openaire   +3 more sources

High-Temperature Ferroelectric Behavior of Al0.7Sc0.3N

open access: yesMicromachines, 2022
Currently, there is a lack of nonvolatile memory (NVM) technology that can operate continuously at temperatures > 200 °C. While ferroelectric NVM has previously demonstrated long polarization retention and >1013 read/write cycles at room temperature, the
Daniel Drury   +4 more
doaj   +1 more source

Magnetic control of large room-temperature polarization [PDF]

open access: yesJournal of Physics: Condensed Matter, 2009
Numerous authors have referred to room-temperature magnetic switching of large electric polarizations as 'the Holy Grail' of magnetoelectricity. We report this long-sought effect, obtained using a new physical process of coupling between magnetic and ferroelectric nanoregions.
Ashok, Kumar   +5 more
openaire   +2 more sources

Temperature and polarization patterns in anisotropic cosmologies [PDF]

open access: yesJournal of Cosmology and Astroparticle Physics, 2011
24 pages, 7 Figures, submitted to JCAP. Revised version: numerous references added, text rewritten, and errors corrected.
Sung, Rockhee, Coles, Peter
openaire   +2 more sources

Research on the Performance and Computational Fluid Dynamics Numerical Simulation of Plate Air Gap Membrane Distillation Module

open access: yesMembranes
Membrane distillation (MD) is widely used in the field of seawater desalination. Among its various sub-categories, air gap membrane distillation (AGMD) stands out due to its high thermal efficiency and compatibility with low-grade heat sources.
Haojie Bi   +4 more
doaj   +1 more source

Temperature-dependent energy storage characterization of Pb-free relaxor ferroelectrics [PDF]

open access: yesJournal of Advanced Dielectrics, 2020
The energy storage properties of (1−x)Bi0.5Na0.5TiO3–xBaTiO3(0≤x≤0.08) (BNT–BT) ceramics obtained via sol–gel method are determined from the polarization versus electric field (P–E) loops at various temperatures. The energy storage densities are observed
Sarir Uddin   +4 more
doaj   +1 more source

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