Results 181 to 190 of about 80,548 (342)

Flecainide Widens the Excitable Gap at Pivot Points of Premature Turning Wavefronts in Rabbit Ventricular Myocardium [PDF]

, 2001
Peter W. Danse, Clifford J. Garratt, Maurits A. Allessie   +2 more
openalex   +1 more source

Metalens‐Based Dual Light‐Sheet Fluorescence Microscopy

Small Methods, EarlyView.
A compact metalens‐based dual‐sided illumination light‐sheet fluorescence microscopy is proposed due to its benefits, such as eliminating shadow artifacts and enhancing image uniformity using twin light‐sheets formed by paired cylindrical metalenses. The system enables high‐resolution, large field‐of‐view tissue imaging with a simplified experimental ...
Yuan Luo, Chun‐Chun Chang, Hung‐Chuan Hsu, Bo‐Wei Huang, Sunil Vyas, S.‐Ja Tseng, Cheng Hung Chu, Takuo Tanaka, Kuang‐Yuh Huang, Din Ping Tsai   +9 more
wiley   +1 more source

Theory and simulation of far field diffraction patterns in Talbot-based transient grating spectroscopy at X-ray free electron lasers. [PDF]

Sci Rep
Goloborodko A, Serrat C, Svetina C.
europepmc   +1 more source

Composite Pentamode Metamaterials for Enhanced Wave Manipulation by Asymmetric Surface Structure

Small Structures, EarlyView.
The asymmetric pentamode surface structure can reduce the scattering from 26.3 dB to 0.96 dB and multiply the frequency range of wave manipulation. This approach results in a 95% improvement in compressive strength compared to pentamode structures with the same acoustic performance, enabling wider deepwater applications.
Liu He, Lei Yang, Xuan Cai, Bing Liu, Chengao Jiang, Dianyu Tang, Bin Su, Chunze Yan, Yusheng Shi   +8 more
wiley   +1 more source

The signal quality of tripolar Laplacian electrogram compared to bipolar electrogram in cardiac electrophysiology. [PDF]

J Arrhythm
Yamashita S, Takemoto M, Fujimoto W, Kuroda K, Imanishi J, Iwasaki M, Todoroki T, Okuda M.   +7 more
europepmc   +1 more source

Amplifier‐Based Programmable Metasurface for Bidirectional Full Polarization Enhancement

Small Structures, EarlyView.
An amplifier‐based programmable metasurface is proposed to enhance bidirectional propagation of various polarized electromagnetic waves. The metasurface incorporates patch scatterers, reconfigurable phase shifters, and negative resistors to manipulate wave direction and improve wireless communication coverage. The Class‐E reflection amplifier minimizes
Xin Wang, Jia Qi Han, Kun Yi Zhang, De Xiao Xia, Hai Xia Liu, Long Li   +5 more
wiley   +1 more source

Dual-conjugate wavefront generation for adaptive optics

, 2000
Thu‐Lan Kelly, David F. Buscher, Paul Clark, C. N. Dunlop, Gordon D. Love, Richard M. Myers, R. M. Sharples, Andrew Zadrozny   +7 more
openalex   +1 more source

Space Vector‐Signal Generator Based on High‐Order Amplitude‐Phase Modulated Programmable Metasurface

Small Structures, EarlyView.
A high‐order amplitude‐phase modulated metasurface offers precise amplitude and phase control, enabling a spatial vector‐signal generator for efficient baseband and complex signal generation. This innovative approach enhances flexibility and dynamic adaptability in RF modulation, demonstrating significant potential for high‐speed wireless communication,
Zhen Jie Qi, Shao Nan Chen, Jun Yan Dai, Jun Wei Zhang, Li Jie Wu, Hui Dong Li, Tie Jun Cui, Qiang Cheng   +7 more
wiley   +1 more source

Potential vision tester using Maxwellian view, small pupil, and different levels of wavefront correction with adaptive optics. [PDF]

Biomed Opt Express
Parimi V, Elsner AE, Burns SA, Gast TJ.
europepmc   +1 more source

Deciphering structural complexity of brain, joint, and muscle tissues using Fourier ptychographic scattered light microscopy

VIEW, EarlyView.
This study introduces Fourier ptychographic scattered light microscopy (FP‐SLM). It combines Fourier ptychographic microscopy (FPM), which images large fields of view with high resolution, and computational scattered light imaging (ComSLI), which visualizes densely interwoven fibers.
Simon E. van Staalduine, Vittorio Bianco, Pietro Ferraro, Miriam Menzel   +3 more
wiley   +1 more source