Results 71 to 80 of about 8,327 (239)

Size-dependence of anisotropic exchange interaction in InAs/GaAs quantum dots

, 2006
A comprehensive study of the exchange interaction between charge carriers in self-organized InAs/GaAs quantum dots is presented. Single quantum-dot cathodoluminescence spectra of quantum dots of different sizes are analyzed.
Akimov, Bayer, Benson, Bester, Christen, Cortez, Grundmann, Heitz, Kavokin, Knill, Kowalik, Kulakovskii, Pohl, Rodt, Santori, Seguin, Stier, Tartakovskii, Young   +18 more
core   +1 more source

Circularly Polarized Long‐Persistent and Photostimulated Luminescence Enabled through Förster Resonance Energy Transfer and Upconversion Strategies

Advanced Science
Circularly polarized luminescence (CPL) has attracted significant attention for applications in displays, data encryption, anti‐counterfeiting, and bioimaging. However, extending the emission lifetime beyond the second timescale remains a challenge. Here,
Ruttapol Malatong, Rengo Yoshioka, Dmitry Kovalevskiy, Kentaro Takaji, Hajime Shigemitsu, Kaede Kawaguchi, Yemineni S. L. V. Narayana, Toshiyuki Kida, Ryota Kabe   +8 more
doaj   +1 more source

Electric‐Current‐Assisted Nucleation of Zero‐Field Hopfion Rings

Advanced Materials, EarlyView.
This work reports a novel and efficient nucleation protocol for 3D localized topological magnetic solitons‐hopfion rings in chiral magnets using pulsed electric currents. By using Lorentz transmission electron microscopy and topological analysis, we report characteristic features and extraordinary stability of hopfion rings in zero or inverted external
Xiaowen Chen, Dongsheng Song, Filipp N. Rybakov, Nikolai S. Kiselev, Long Li, Wen Shi, Rui Wu, Xuewen Fu, Olle Eriksson, Stefan Blügel, Rafal E. Dunin‐Borkowski, Haifeng Du, Fengshan Zheng   +12 more
wiley   +1 more source

Effects of Coulomb interactions on the splitting of luminescence lines

, 2004
We study the splitting between the right-hand and left-hand circularly polarized luminescence lines in a quantum dot under relatively weak confinement regime and resonant high-power excitation.
Augusto Gonzalez, Boris A. Rodriguez, Brown, Brown, Dekel, Dobaczewski, Gammon, Gammon, Gammon, Najda, Paget, Paget, Perez, Radzig, Rodriguez, Seck, Snelling, Snelling, Traynor   +18 more
core   +1 more source

Chiral Rare Earth Nanomaterials: Synthesis, Optical Properties, and Potential Applications

Nanomaterials
Chiral rare earth nanomaterials, which impart optical activity through chiral structures or ligands, possess promising application potential in optoelectronic displays, biosensing, information encryption, and catalysis due to unique properties like ...
Lei Zhao, Pan Liang, Hua Zhao, Rongrong Hu, Yangyang Xu, Fangfang Chen, Xianghu Wang, Yunhua Yao   +7 more
doaj   +1 more source

Chiral Metal Halide Perovskites for Spin‐Polarized Light‐Emitting Diodes

Advanced Materials, EarlyView.
Chiral metal–halide perovskites offer a route to circularly polarized light without external polarizers. This Perspective compares two spin‐light emitting diode concepts: intrinsically chiral emissive layers and chiral spin‐filter interlayers that inject spin‐polarized carriers into efficient achiral emitters.
Ashish Gaurav, Jihyun Kim, Nadesh Fiuza‐Maneiro, Hongki Kim, Hae‐Jun Seok, Sergio Gómez Grana, Robert L. Z. Hoye, Lakshminarayana Polavarapu, Matthew J. Fuchter   +8 more
wiley   +1 more source

End‐to‐End Sensing Systems for Breast Cancer: From Wearables for Early Detection to Lab‐Based Diagnosis Chips

Advanced Materials Technologies, EarlyView.
This review explores advances in wearable and lab‐on‐chip technologies for breast cancer detection. Covering tactile, thermal, ultrasound, microwave, electrical impedance tomography, electrochemical, microelectromechanical, and optical systems, it highlights innovations in flexible electronics, nanomaterials, and machine learning.
Neshika Wijewardhane, Lyn I. Jones, Richard M. Martin, Helen Winter, Faezeh Arab Hassani   +4 more
wiley   +1 more source

Chiral liquid crystal elastomers advance light modulation

Light: Science & Applications
Chiral liquid crystal elastomers, as soft photonic materials, enable dynamic omnidirectional tuning of circularly polarized reflection wavelength and function as an effective medium for full-color circularly polarized luminescence, showing promise for ...
Jiazhe Ma, Zhongqiang Yang
doaj   +1 more source

Transducers Across Scales and Frequencies: A System‐Level Framework for Multiphysics Integration and Co‐Design

Advanced Materials Technologies, EarlyView.
Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu, Mengyao Xiao, Zhouli Sui, Yinpeng Wang, Daoye Zheng, Yuxin Liu, Luwei Wang, Huajun Liu, Chengkuo Lee   +8 more
wiley   +1 more source

Coherent spin dynamics of electrons and excitons in nanostructures

, 2012
The studies of spin phenomena in semiconductor low dimensional systems have grown into the rapidly developing area of the condensed matter physics: spintronics.
Glazov, M. M.
core   +1 more source