Results 61 to 70 of about 28,256 (297)

Terahertz Antenna Array Based on a Hybrid Perovskite Structure

IEEE Open Journal of Antennas and Propagation, 2020
This article presents a novel terahertz (THz) antenna array design comprising a layered structure of a perovskite material which enhances the radiation characteristics of an antenna overlaid on a conventional metallic antenna element.
Abdoalbaset Abohmra, Hassan Abbas, Muath Al-Hasan, Ismail Ben Mabrouk, Akram Alomainy, Muhammad A. Imran, Qammer H. Abbasi   +6 more
doaj   +1 more source

A Novel, Simple and Highly Efficient Route to Obtain PrBaMn₂O_5+δ Double Perovskite: Mechanochemical Synthesis

Nanomaterials, 2021
In this work, a mechanochemical route was proposed for the synthesis of the PrBaMn2O5+δ (PMBO) double layered perovskite phase. The mechanochemical reaction between Pr6O11, BaO2, and MnO powders with cationic stoichiometric ratios of 1/1/2 for Pr/Ba/Mn ...
Francisco J. Garcia-Garcia, María J. Sayagués, Francisco J. Gotor   +2 more
doaj   +1 more source

Multiferroic BiFeO3-BiMnO3 Nanocheckerboard From First Principles

, 2010
We present a first principles study of an unusual heterostructure, an atomic-scale checkerboard of BiFeO3-BiMnO3, and compare its properties to the two bulk constituent materials, BiFeO3 and BiMnO3.
K. M. Rabe, L. Pálová, P. Chandra, R. Resta, S. V. Kiselev   +4 more
core   +1 more source

The formation of boundary clinopyroxenes and associated glass veins in type B1 CAIs [PDF]

, 2009
We used focused ion beam thin section preparation and scanning transmission electron microscopy (FIB/STEM) to examine the interfacial region between spinel and host melilite for spinel grains in type B1 inclusions from the Allende and Leoville ...
Abreu, Armstrong, Bacon, Barber, Barber, Beckett, Beckett, Beckett, Bernatowicz, Bleiner, Blum, Blum, Bradley, Caillet, Caillet, Cain, Campbell, Clayton, Connolly, Connolly, Connolly, Croat, Daulton, Daulton, Fahey, Floss, Fransolet, Gaetani, Giannuzzi, Giannuzzi, Goresy, Gray, Greshake, Grossman, Grossman, Grossman, Heaney, Hill, Ireland, Ito, Keller, Keller, Kennedy, Kieffer, Komorowski, Kuehner, Kurat, Lee, Lin, Lin, Lundstrom, MacPherson, MacPherson, MacPherson, Marvin, Mendybaev, Nakamura, Nguyen, Obst, Overwijk, Palme, Paque, Paque, Paque, Peters, Prenitzer, Reid, Richter, Richter, Richter, Rives, Simon, Simon, Simon, Simon, Stolper, Stolper, Streck, Stroud, Sylvester, Vidal, Weber, Wei, Wirth   +83 more
core   +1 more source

Seven-Layered 2D Hybrid Lead Iodide Perovskites [PDF]

Chem, 2019
Two-dimensional hybrid halide perovskites offer high chemical versatility, strong potential in optoelectronics. Here, we report the highest layer thickness perovskites yet to be crystallographically characterized, for the Dion-Jacobson (DJ) family. The seven-layered DJ phase (4AMP)(MA) 6Pb 7I 22 (4AMP =4-aminomethylpyperidinium) shows less distortion ...
Mao, Lingling, Kennard, Rhys, Traore, Boubacar, Ke, Weijun, Katan, Claudine, Even, Jacky, Chabinyc, Michael, Stoumpos, Constantinos, Kanatzidis, Mercouri   +8 more
openaire   +1 more source

Spectrally Tunable 2D Material‐Based Infrared Photodetectors for Intelligent Optoelectronics

Advanced Functional Materials, EarlyView.
Intelligent optoelectronics through spectral engineering of 2D material‐based infrared photodetectors. Abstract The evolution of intelligent optoelectronic systems is driven by artificial intelligence (AI). However, their practical realization hinges on the ability to dynamically capture and process optical signals across a broad infrared (IR) spectrum.
Junheon Ha, Yingshan Ma, Yong Nam An, Sung‐Un An, Hyeon Hak Jung, Suvi‐Tuuli Varjamo, Jiwon Yoo, Junho Min, Hanvit Kim, Faisal Ahmed, Sang Hoon Chae, Young Min Song, Weiwei Cai, Tawfique Hasan, Zhipei Sun, Dong‐Ho Kang, Hyeon‐Jin Shin, Yunyun Dai, Hoon Hahn Yoon   +18 more
wiley   +1 more source

Soft chemical control of the crystal and magnetic structure of a layered mixed valent manganite oxide sulfide

APL Materials, 2015
Oxidative deintercalation of copper ions from the sulfide layers of the layered mixed-valent manganite oxide sulfide Sr2MnO2Cu1.5S2 results in control of the copper-vacancy modulated superstructure and the ordered arrangement of magnetic moments carried ...
Jack N. Blandy, Artem M. Abakumov, Kirsten E. Christensen, Joke Hadermann, Paul Adamson, Simon J. Cassidy, Silvia Ramos, David G. Free, Harry Cohen, Daniel N. Woodruff, Amber L. Thompson, Simon J. Clarke   +11 more
doaj   +1 more source

Exciton Binding Energy Modulation in 2D Perovskites: A Phenomenological Keldysh Framework

Advanced Functional Materials, EarlyView.
The intrinsic screening effects are successfully decoupled from structural distortion by rigorously designing a series of 2D perovskites. This enabled us to demonstrate how the dielectric environment modulates the quasiparticle bandgap and exciton binding energy.
Kitae Kim, Namhee Kwon, Sang Woo Park, Wonsik Kim, Seunghwan Kim, Eunki Yoon, Aelim Ha, Donggyu Lee, Young Yong Kim, Jong‐Cheol Lee, Sungho Lee, Junghan Lee, Kyu Hyoung Lee, Yeonjin Yi, Ki‐Ha Hong, Soohyung Park   +15 more
wiley   +1 more source

Layered Perovskite Materials for Photocatalytic Overall Water Splitting: Recent Advances, Enhanced Strategies, and Future Challenges

EcoEnergy
Achieving sustainable energy generation without causing environmental pollution is one of modern society's grand challenges. Photocatalytic overall water splitting (OWS) presents a sustainable option for producing the green energy vector H2 while ...
Na Li, Chao Cheng, Yilin Wang, Alex W. Robertson, Zhenyu Sun   +4 more
doaj   +1 more source

Excitonic States in Semiconducting Two-dimensional Perovskites

, 2018
Hybrid organic/inorganic perovskites have emerged as efficient semiconductor materials for applications in photovoltaic solar cells with conversion efficiency above 20 \%.
Molina-Sánchez, Alejandro
core   +2 more sources