Results 51 to 60 of about 289,222 (269)

Ultrafast dynamics of photoexcited carriers in perovskite semiconductor nanocrystals

Nanophotonics, 2021
Perovskite semiconductor nanocrystals have emerged as a promising family of materials for optoelectronic applications including light-emitting diodes, lasers, light-to-electricity convertors and quantum light emitters.
Yu Buyang, Zhang Chunfeng, Chen Lan, Qin Zhengyuan, Huang Xinyu, Wang Xiaoyong, Xiao Min   +6 more
doaj   +1 more source

Micromechanical investigation of the influence of defects in high cycle fatigue [PDF]

, 2014
This study aims to analyse the influence of geometrical defects (notches and holes) on the high cycle fatigue behaviour of an electrolytic copper based on finite element simulations of 2D polycrystalline aggregates.
GUERCHAIS, Raphaël, MOREL, Franck, ROBERT, Camille, SAINTIER, Nicolas   +3 more
core   +6 more sources

Characterization of Defect Distribution in an Additively Manufactured AlSi10Mg as a Function of Processing Parameters and Correlations with Extreme Value Statistics

Advanced Engineering Materials, EarlyView.
Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt, Varma Kvvssn, Hossein Laieghi, Zia Uddin, Peyman Ansari, E. Kıvanç Sadak, Can Barış Toprak, Hüseyin Kızıl, Enrico Salvati   +8 more
wiley   +1 more source

Highly efficient field-free switching of perpendicular yttrium iron garnet with collinear spin current

Nature Communications
Yttrium iron garnet, a material possessing ultralow magnetic damping and extraordinarily long magnon diffusion length, is the most widely studied magnetic insulator in spintronics and magnonics. Field-free electrical control of perpendicular yttrium iron
Man Yang, Liang Sun, Yulun Zeng, Jun Cheng, Kang He, Xi Yang, Ziqiang Wang, Longqian Yu, Heng Niu, Tongzhou Ji, Gong Chen, Bingfeng Miao, Xiangrong Wang, Haifeng Ding   +13 more
doaj   +1 more source

Magnetism of graphene quantum dots

npj Quantum Materials, 2017
Condensed matter physics: intrinsic magnetism emerges in graphene quantum dots A local magetic moment emerges in nanoscale high purity graphene quantum dots, probably resulting from edge passivation.
Yuanyuan Sun, Yongping Zheng, Hongzhe Pan, Jie Chen, Weili Zhang, Lin Fu, Kaiyu Zhang, Nujiang Tang, Youwei Du   +8 more
doaj   +1 more source

Absence of nonlocal resistance in microstructures of PbTe quantum wells

, 2012
We report on experiments allowing to set an upper limit on the magnitude of the spin Hall effect and the conductance by edge channels in quantum wells of PbTe embedded between PbEuTe barriers.
Aleszkiewicz, M., Bauer, G., Cywiński, Ł., Dietl, T., Grabecki, G., Kolwas, K. A., Springholz, G., Trushkin, S., Wróbel, J.   +8 more
core   +1 more source

Experimental Evaluation of 100Cr6 Steel Microindented Surfaces Under Lubricated Nonconformal Point Contacts

Advanced Engineering Materials, EarlyView.
The tribological behavior of 100Cr6 steel spheres textured via Vickers microindentation is evaluated under lubricated sliding by varying both dimple size and density. Fine and dense textures significantly reduce friction across all lubrication regimes, while large dimples increase it.
Farideh Davoodi, Pasquale Guglielmi, Gianfranco Palumbo, Giuseppe Carbone   +3 more
wiley   +1 more source

Anomalous quantization trajectory and parity anomaly in Co cluster decorated BiSbTeSe2 nanodevices

Nature Communications, 2017
The topological surface states usually appear in pairs in a topological insulator, with one on the top surface and the other on the bottom surface. Here, Zhang et al.
Shuai Zhang, Li Pi, Rui Wang, Geliang Yu, Xing-Chen Pan, Zhongxia Wei, Jinglei Zhang, Chuanying Xi, Zhanbin Bai, Fucong Fei, Mingyu Wang, Jian Liao, Yongqing Li, Xuefeng Wang, Fengqi Song, Yuheng Zhang, Baigeng Wang, Dingyu Xing, Guanghou Wang   +18 more
doaj   +1 more source

Semiconductor/dielectric interface in organic field-effect transistors: charge transport, interfacial effects, and perspectives with 2D molecular crystals

Advances in Physics: X, 2020
Organic field-effect transistors (OFETs) have been the hotspot in information science for many years as the most fundamental building blocks for state-of-the-art organic electronics.
Mengjiao Pei, Jianhang Guo, Bowen Zhang, Sai Jiang, Ziqian Hao, Xin Xu, Yun Li   +6 more
doaj   +1 more source

Magnetic noise around metallic microstructures

, 2007
We compute the local spectrum of the magnetic field near a metallic microstructure at finite temperature. Our main focus is on deviations from a plane-layered geometry for which we review the main properties.
Abramowitz M., Bo Zhang, C. Henkel, Landau L. D., Nieto-Vesperinas M., Rytov S. M.   +5 more
core   +1 more source