Results 81 to 90 of about 653,628 (283)

Topological Spin‐Texture Transitions in van der Waals Magnets Revealed by X‐Ray Fourier Transform Holography

Advanced Materials, EarlyView.
Applied here for the first time to a 2D material, high‐resolution synchrotron x‐ray Fourier transform holography directly images topological spin textures in Fe3GeTe2. Combined with atomistic tight‐binding simulations including itinerant electrons and Rashba spin‐orbit coupling, the approach reveals labyrinth, skyrmion, and mixed phases, and uncovers ...
Sourav Chowdhury, Soumyaranjan Dash, Michael Schneider, Christopher Klose, Chithra H. Sharma, Lisa‐Marie Kern, Tim A. Butcher, Josefin Fuchs, Santanu Pakhira, Samik DuttaGupta, Takashi Taniguchi, Kenji Watanabe, Sujit Das, Sanjeev Kumar, Bastian Pfau, Amir‐Abbas Haghighirad, Moritz Hoesch   +16 more
wiley   +1 more source

Asymmetric Synthesis and Absolute Configuration Assignment of a New Type of Bedaquiline Analogue

Molecules, 2015
Bedaquiline is the first FDA-approved new chemical entity to fight multidrug-resistant tuberculosis in the last forty years. Our group replaced the quinoline ring with a naphthalene ring, leading to a new type of triarylbutanol skeleton.
Chang-Jiang Qiao, Xiao-Kui Wang, Fei Xie, Wu Zhong, Song Li   +4 more
doaj   +1 more source

Spectrally Programmable Spin‐Polarized Photocurrents in WSe2–NiPS3 Magnetic van der Waals Heterostructures

Advanced Materials, EarlyView.
Heterostructure photodiode devices of p‐type WSe2 with n‐type NiPS3 constructs spectrally protected spin‐polarized photocurrents. The energy of the excitation photon serves as an independent control parameter for spin‐selective photocurrent generation. ABSTRACT Efficient generation and control of spin‐polarized currents in semiconductors remain central
Rajesh Kumar Yadav, Michal Poplinger, Adi Levi, Adi Harchol, Nirman Chakraborty, Thomas Brumme, Thomas Heine, Efrat Lifshitz, Doron Naveh   +8 more
wiley   +1 more source

Tunable circular dichroism of chiral metamaterial based on phase transition of vanadium dioxide (VO2)

Materials Research Express, 2020
The circular dichroism effect characterized by different optical responses between left-handed and right-handed circularly polarized lights is widely applied for biological monitoring, analytical chemistry, and plasmonic sensing.
Fan Gao, Junwen Zhu, Hongfeng Ma, Kexue Li, Peicheng Yuan, Bo Yan   +5 more
doaj   +1 more source

Inverse Design of Nanoparticulate Materials

Advanced Materials, EarlyView.
Inverse design shifts nanomaterial development from empirical trial‐and‐error to predictive model‐driven strategies. It can rely on knowledge‐based, data‐based, or hybrid process and property functions. This perspective article provides a practical framework for applying inverse design based on instructive examples. It discusses which modeling approach
Nabi Etienne Traoré, Annika Mauch, Michelle Berthold, Lukas Pflug, Wolfgang Peukert, Nicolas Vogel   +5 more
wiley   +1 more source

Large exchange-driven intrinsic circular dichroism of a chiral 2D hybrid perovskite

Nature Communications
In two-dimensional chiral metal-halide perovskites, chiral organic spacers endow structural and optical chirality to the metal-halide sublattice, enabling exquisite control of light, charge, and electron spin.
Shunran Li, Xian Xu, Conrad A. Kocoj, Chenyu Zhou, Yanyan Li, Du Chen, Joseph A. Bennett, Sunhao Liu, Lina Quan, Suchismita Sarker, Mingzhao Liu, Diana Y. Qiu, Peijun Guo   +12 more
doaj   +1 more source

Helicity‐Dependent All‐Optical Switching in Bi,Ga‐Substituted Rare‐Earth Iron Garnet Films Driven by Orbital Magnetic Moment

Advanced Optical Materials, EarlyView.
Helicity‐dependent all‐optical magnetization switching was demonstrated for the Bi‐ and Ga‐substituted rare‐earth (R) iron garnet crystal thin films (Bi,Ga:RIG; R = Eu3+, Nd3+, and Y3+). The efficiency followed the order EIG > NIG > YIG. These results show the correlation between 4f orbital moment (4f〈L〉) of R3+ and helicity‐dependent optical ...
Ayumu Hata, Ryuichiro Asatani, Saiki Suzuki, Md Abdullah Al Masud, Hotaka Sakaguchi, Jun Okabayashi, Shinji Isogami, Takayuki Ishibashi   +7 more
wiley   +1 more source

Design of a High-Efficiency Near-Infrared Circular Polarization Filter Responding to Dual Wavelengths Based on Twisted Bilayer Plasmonic Metasurfaces

Crystals
Circular dichroism is at the core of chiral spectroscopy and polarization light manipulation. However, achieving metal-based devices with high efficiency, compactness, and easy integration in the near-infrared band remains a significant challenge ...
Xianrui Jian, Longfeng Lv, Yuxiao Zou, Guofeng Song, Bo Cheng, Wang Xiaoming, Zhang Xiujun, Kunpeng Zhai, Hanxiao Shao   +8 more
doaj   +1 more source

Chiral Nanoparticles Suppress Inflammatory Infiltration to Promote Extracellular Matrix Remodeling for Ectopia Lentis Therapy

Advanced Science, EarlyView.
L‐cysteine‐configured chiral polyurethane nanoparticles suppress ocular inflammation and reduce extracellular matrix (ECM) degradation in ectopia lentis by regulating macrophages polarization and inhibiting nuclear factor kappa B signaling pathway. By promoting zonular fiber‐associated protein restoration and tissue repair, this minimally invasive ...
Yinuo Wen, Yan Yang, Haihan Gao, Yan Liu, Xinyue Wang, Linghao Song, Ruohong Li, Ao Miao, Jie Xu, Zhennan Zhao, Dan Li, Shenjie Peng, Linzhao Li, Min Zhang, Yonghang Liu, Liren Wang, Tianhui Chen, Yongxiang Jiang   +17 more
wiley   +1 more source

Intermediates of reversible photochemistry of phycoerythrocyanin α from Mastigocladus laminosus probed by low temperature absorption and circular dichroism spectroscopy

International Journal of Photoenergy, 1999
The reversible photochemistry of the α-subunit of phycoerythrocyanin (α-PEC) has been measured by low temperature absorption and circular dichroism in the range of 125K to 295 K.
Kai-Hong Zhao, Hugo Scheer
doaj   +1 more source