Results 161 to 170 of about 926 (266)

Redshift and distances in a {\Lambda}CDM cosmology with non-linear inhomogeneities

, 2011
Motivated by the dawn of precision cosmology and the wealth of forthcoming high precision and volume galaxy surveys, in this paper we study the effects of inhomogeneities on light propagation in a flat \Lambda CDM background. To this end we use exact solutions of Einstein's equations (Meures & Bruni 2011) where, starting from small fluctuations ...
Meures, Nikolai, Bruni, Marco
openaire   +1 more source

Rational Design of CdS QDs/CeO2 Nanocube S‐Scheme Heterojunctions for Highly Efficient C2H4 Scavenging in Fresh Produce Preservation

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
A novel S‐scheme heterojunction of CdS quantum dots on CeO2 nanocubes was designed to enhance charge separation and oxygen activation for efficient photocatalytic ethylene removal. The optimized composite achieved complete C2H4 degradation within 4 min under low‐intensity visible light, with a rate constant of 1.72 min−1. Mechanistic analysis confirmed
Zining Xu, Yankun Zhou, Rong Li, Shenghang Peng, Qifan Zhang, Alex Aziz, Xiaohong Xia, Xuxing Chen   +7 more
wiley   +1 more source

Piezofluorochromism in Aramid Dyads: Pressure-Triggered Luminescence Enhancement with Predictable Emission Shifts. [PDF]

Adv Sci (Weinh)
Wang Y, Jia Z, Wang Y, Wei L, Hao Z, Wang Y, Guo J, Li A, Li L, Wang K, Li Q.   +10 more
europepmc   +1 more source

Blue‐hazard‐free single‐emissive‐layer white organic LEDs based on an anti‐quenching narrowband blue emitter

FlexMat, EarlyView.
A blue‐hazard‐free single‐emissive‐layer white OLED is realized using an anti‐quenching multiple‐resonance TADF emitter, BNCT. By integrating a sterically protected MR core with efficient energy transfer capability, BNCT enables warm‐white emission with high efficiency, negligible hazardous blue photons, and a simplified device architecture for next ...
Xiao‐Long Liu, Wei‐Le Wu, Ru‐Jia Wang, Xin‐Lu Li, Jia‐Ming Jin, Ji‐Hua Tan, Hong‐Ji Tan, Yanping Huo, Hao‐Li Zhang, Wen‐Cheng Chen   +9 more
wiley   +1 more source

Could dark energy be changing over time? [PDF]

Proc Natl Acad Sci U S A
Mann A.
europepmc   +1 more source

Selenophene‐substituted A‐D‐A‐type non‐fullerene acceptors for organic solar cells with an ultra‐high short‐circuit current density of 27.14 mA cm−2

FlexMat, EarlyView.
Two novel narrow bandgap electron‐deficient acceptors 6TFSe‐4F and 6TFSe‐4Cl were rationally constructed via synergistic core fluorination, selenophene substitution, and alkylation, enhancing donor‐acceptor molecular electrostatic potential difference to improve exciton dissociation and reduce energy loss.
Jianan Fang, Shuzhen Liao, Jiayi Cheng, Yuang Fu, Meng Tao, Jin Li, Peipei Zhu, Mingtao Liu, Zeng Li, Xinhui Lu, Xunfan Liao, Yiwang Chen   +11 more
wiley   +1 more source

Using JADES NIRCam photometry to investigate the dependence of stellar mass inferences on the IMF in the early universe. [PDF]

Proc Natl Acad Sci U S A
Woodrum C, Rieke M, Ji Z, Baker WM, Bhatawdekar R, Bunker AJ, Charlot S, Curtis-Lake E, Eisenstein DJ, Hainline K, Hausen R, Helton JM, Hviding RE, Johnson BD, Robertson B, Sun F, Tacchella S, Whitler L, Williams CC, Willmer CNA.   +19 more
europepmc   +1 more source

Strengthened inter‐chain π–π contacts in amorphous diketopyrrolopyrrole polymers for robust flexible organic thin‐film transistors

FlexMat, EarlyView.
Vinylene‐linked DPP polymers with expanded thiophene donors achieve strengthened interchain π‐π stacking in near‐amorphous films, enabling high charge mobility and outstanding mechanical stability for flexible organic thin‐film transistors. Abstract Flexible organic thin‐film transistors (OTFTs) based on multi‐vinylene‐linked diketopyrrolopyrrole (DPP)
Yanlin Chen, Shihong Zhou, Tianwen Chen, Zitong Liu, Zhiwei Yang, Haijun Long, Xianfeng Liang, Xiao Xue, Chenyang Lu, Cailong Zhou, Lichun Dong, Luxi Tan   +11 more
wiley   +1 more source

Sub-ångström bond length tuning enhances photoluminescence quantum yield in copper nanoclusters. [PDF]

Nat Commun
Tang L, Zhang W, Han Q, Wang B, Zhou M, Wang S.   +5 more
europepmc   +1 more source

Non‐fullerene acceptor aggregation regulation via additives dipole moment leads to 19.9% power conversion efficiency in bilayer organic solar cells

FlexMat, EarlyView.
Additives interact with non‐fullerene acceptors to modulate their aggregation behavior and molecular orientation via optimizing crystallization kinetics. The optimized morphology effectively suppresses charge carrier recombination and enhances charge transport. Notably, 2‐chloro‐1,3‐dibromobenzene with the dipole moments of 2.56 D enables the PM6/L8‐BO
Jingjing Zhao, Jiancheng Zhong, Yuanyuan Qin, Chenxi Cao, Lanlan Zhang, Xin Li, Min Zhang, Hongxiang Li, Zhipeng Kan   +8 more
wiley   +1 more source