Results 211 to 220 of about 32,454 (279)

Mitigating Losses in Hyperbolic Asymptotic Eigenmodes

Advanced Photonics Research, EarlyView.
Herein, hyperbolic asymptotic eigenmodes, high‐k modes aligned with asymptotic directions in hyperbolic metamaterials, are introduced. By tuning permittivity tensors to balance loss compensation (Re(ε∥)/Re(ε⊥)=Im(ε∥)/Im(ε⊥))$\left(\right. \text{Re} \left(\right. \left(\epsilon\right)_{\parallel} \left.\right) / \text{Re} \left(\right.
Lu Song, Huaping Wang, Yingjie Wu, Tong Cai, Jiangang Liang, Lian Shen   +5 more
wiley   +1 more source

Template-free 3D programmable magnetization of soft millirobots induced by interlayer stress. [PDF]

Proc Natl Acad Sci U S A
Han J, Wang S, Zheng Z, Chen D, Zhang W, Qu Z, Cheng M, Yao Y, Sitti M, Dong L.   +9 more
europepmc   +1 more source

A Trade‐Off between Pulse Energy and Stability in Seeded Free‐Electron Lasers

Advanced Photonics Research, EarlyView.
Seeded free‐electron lasers (FELs) require balancing competing factors for optimal performance. This work analyzes how dispersion strength influences output in high‐gain harmonic generation. Results reveal a trade‐off: maximizing pulse energy often comes at the cost of reduced stability and vice versa.
Li Zeng, Huaiqian Yi, Xiaofan Wang, Chao Feng, Weiqing Zhang   +4 more
wiley   +1 more source

Transferrin promotes fatty acid oxidation and liver tumor growth through PHD2-mediated PPARα hydroxylation in an iron-dependent manner. [PDF]

Proc Natl Acad Sci U S A
Qian X, Zhou Q, Ouyang Y, Wu X, Sun X, Wang S, Duan Y, Hu Z, Hou Y, Wang Z, Chen X, Wang KL, Shen Y, Dong B, Lin Y, Wen T, Tian Q, Guo Z, Li M, Xiao L, Wu Q, Meng Y, Liu G, Ying H, Zhou Y, Zhang W, Duan S, Bai X, Liu T, Zhan P, Lu Z, Xu D.   +31 more
europepmc   +1 more source

Coupling Enhanced Diffractive Deep Neural Network with Structural Nonlinearity

Advanced Photonics Research, EarlyView.
Here, structural nonlinearity is introduced into diffractive deep neural networks (D2NNs) by incorporating encoding‐free data repetition layers, enabling high‐order optical nonlinearity while reducing the system complexity. Additionally, to enhance the design accuracy of D2NNs, a graph neural network is developed to characterize the coupling effects ...
Ouling Wu, Chao Qian, Guangfeng You, Dashuang Liao, Nanxuan Wu, Hongsheng Chen   +5 more
wiley   +1 more source

Activity-Selectivity Trends in Electrochemical Urea Synthesis: Co-Reduction of CO₂ and Nitrates Over Single-Site Catalysts. [PDF]

Adv Sci (Weinh)
Zhao Q, Liu Y, Zhang Y, Zhu S, Xu H, Farhadpour M, Xiao F, Xing M, Cao D, Qin X, Vegge T, Shao M.   +11 more
europepmc   +1 more source

Optical Chaos Generation and Applications

Advanced Photonics Research, EarlyView.
This review comprehensively examines optical chaos generation via feedback, injection, and optoelectronic methods, emphasizing bandwidth enhancement and time‐delay suppression. Applications include chaos‐synchronized secure communication, physical random number generation, chaotic lidar for cm‐level detection, distributed fiber sensing, and terahertz ...
Wenhui Chen, Xiaoxin Mao, Junli Wang, Rong Zhang, Longsheng Wang, Zhiwei Jia, Pu Li, Anbang Wang, Yuncai Wang   +8 more
wiley   +1 more source

Beam Combining of a Tunable Tilted Quantum Cascade Laser Array

Advanced Photonics Research, EarlyView.
The four‐channel tilted waveguide with varying angles in the quantum cascade laser array, achieving a free tuning range of 100 nm and common‐aperture output simultaneously, is reported. The fabrication eliminates the necessity of electron‐beam lithography and is very promising for mass production in gas sensing industry.
Fan Ye, Pengchang Yang, Yue Ji, Shan Niu, Fengqi Liu, Youdou Zheng, Yi Shi, Jinchuan Zhang   +7 more
wiley   +1 more source

Author Correction: NS2 induces an influenza A RNA polymerase hexamer and acts as a transcription to replication switch. [PDF]

EMBO Rep
Sun J, Kuai L, Zhang L, Xie Y, Zhang Y, Li Y, Peng Q, Shao Y, Yang Q, Tian WX, Zhu J, Qi J, Shi Y, Deng T, Gao GF.   +14 more
europepmc   +1 more source