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Polar materials for photocatalytic applications: A critical review

open access: yesInterdisciplinary Materials
The critical challenges of the energy crisis and environmental degradation promote innovative approaches for energy conversion. Semiconductor‐based photocatalytic technology, which transforms solar energy into chemical energy, emerges as a promising ...
Xiaoqing Liu   +3 more
doaj   +2 more sources

Anisotropic Purcell Effect and Quantum Interference in Fractal Aggregates of Nanoparticles

open access: yesPhotonics, 2023
We study theoretically the emergence of an anisotropic Purcell factor in random two-dimensional fractal aggregates of nanoparticles. These nanoparticles can either be metallic nanoparticles made of silver, which exhibit surface plasmon resonances, or ...
Vassilios Yannopapas   +1 more
doaj   +1 more source

Modification of the Emission Spectrum of a Quantum Emitter in the Vicinity of Bismuth Chalcogenide Microparticles

open access: yesPhotonics, 2023
We examine theoretically the effect of bismuth chalcogenide microparticles on the spontaneous emission of a double-V-type quantum emitter in free space.
Margarita-Georgia Papadaki   +3 more
doaj   +1 more source

Phase-Controlled Absorption and Dispersion Properties of a Multi-Level Quantum Emitter Interacting with Bismuth-Chalcogenide Microparticles

open access: yesPhotonics, 2023
We theoretically study the impact of bismuth-chalcogenide microparticles on the linear absorption and dispersion properties of a four-level double-V-type quantum system.
Theodoros Papachronis   +3 more
doaj   +1 more source

Studying The Dielectric and Structural Properties of Baxsr1-Xtio3 (BST) Ferroelectric System Prepared by Using Oxalic Acid Route [PDF]

open access: yesEngineering and Technology Journal, 2010
BaxSr1-xTiO3 (BST) ferroelectric nano, poly crystalline systems wereprocessed with three concentrations (x = 0.5, 0.7 and 0.9) using a technique knownas oxalic acid route. The XRD spectra were analyzed, and used Scherer formula toestimate the crystallite
Sabah M. Ali Ridha, Rawa A. Helal
doaj   +1 more source

High Surface Phonon-Polariton in-Plane Thermal Conductance along Coupled Films

open access: yesNanomaterials, 2020
Surface phonon-polaritons (SPhPs) are evanescent electromagnetic waves that can propagate distances orders of magnitude longer than the typical mean free paths of phonons and electrons. Therefore, they are expected to be powerful heat carriers capable of
Saeko Tachikawa   +6 more
doaj   +1 more source

Atomic Insights into Ti Doping on the Stability Enhancement of Truncated Octahedron LiMn2O4 Nanoparticles

open access: yesNanomaterials, 2021
Ti-doped truncated octahedron LiTixMn2-xO4 nanocomposites were synthesized through a facile hydrothermal treatment and calcination process. By using spherical aberration-corrected scanning transmission electron microscopy (Cs-STEM), the effects of Ti ...
Wangqiong Xu   +10 more
doaj   +1 more source

Sliding ferroelectricity in van der Waals layered γ-InSe semiconductor

open access: yesNature Communications, 2023
Exploring two-dimensional layered ferroelectric semiconductors is highly desired for ferroelectric-based devices. Here, the authors realize the room-temperature ferroelectricity in layered Y-doped γ-InSe due to the microstructure modifications.
Fengrui Sui   +7 more
doaj   +1 more source

The Relationship between Electron Transport and Microstructure in Ge2Sb2Te5 Alloy

open access: yesNanomaterials, 2023
Phase-change random-access memory (PCRAM) holds great promise for next-generation information storage applications. As a mature phase change material, Ge2Sb2Te5 alloy (GST) relies on the distinct electrical properties of different states to achieve ...
Cheng Liu   +5 more
doaj   +1 more source

Ion adsorption-induced reversible polarization switching of a van der Waals layered ferroelectric

open access: yesNature Communications, 2021
Whether it is possible to achieve polarization inversion in a ferroelectric without any energy consumption is an open question. Here, the authors demonstrate an energy-free approach to control the polarization state of CuInP2S6, a typical room ...
Dong-Dong Xu   +7 more
doaj   +1 more source

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