Results 191 to 200 of about 6,501 (284)

Panoramic voltage‐sensitive optical mapping of contracting hearts using cooperative multiview motion tracking with 12 cameras

The Journal of Physiology, EarlyView.
Abstact figure legend A panoramic 3D optical mapping system was developed, enabling imaging of action potential waves across the entire strongly deforming ventricular surface of beating isolated hearts. The system comprises 12 high‐speed cameras and a soccerball‐shaped imaging chamber with 48 light‐emitting diodes (LEDs).
Shrey Chowdhary, Jan Lebert, Shai Dickman, Mason Manetta, Charles Gordon, Jan Christoph   +5 more
wiley   +1 more source

Improved Machine Learning Approach for Wavefront Sensing. [PDF]

Sensors (Basel), 2019
Guo H, Xu Y, Li Q, Du S, He D, Wang Q, Huang Y.   +6 more
europepmc   +1 more source

Multiscale mechanistic modelling of heterogeneity in cardiac sub‐cellular calcium handling accounting for variable t‐system density

The Journal of Physiology, EarlyView.
Abstract figure legend Illustration of spatial calcium dynamics (left panels) and the state cycle approximation (middle panel) that enables reduced simulation of spatially dependent dynamics without explicit description of space (right panels). The selected example here illustrates a spontaneous calcium wave, showing temporal snapshots of local calcium
Michael A Colman, Yohannes Shiferaw, David Conesa   +2 more
wiley   +1 more source

Comparative multimodal calibration of patient‐specific atrial fibrillation models: Impact of imaging and electrophysiology data on arrhythmogenic substrate identification

The Journal of Physiology, EarlyView.
Abstract figure legend Comparative multimodal calibration of patient‐specific left atrial (LA) models to identify arrhythmogenic substrates in atrial fibrillation (AF). A, LA models shown in posterior and anterior views, calibrated separately using: late gadolinium enhancement magnetic resonance imaging (LGE‐MRI) image intensity ratio (IIR; blue–red ...
Mahmoud Ehnesh, Haseeb Valli, Ovais A. Jaffery, Sam Coveney, Alexander Zolotarev, Zhong Chen, Wajid Hussain, David G. Jones, Raad Mohiaddin, Tom Wong, Gregory Slabaugh, Steven A. Niederer, Edward Vigmond, Shouvik Haldar, Caroline Roney   +14 more
wiley   +1 more source

Combined emission ratiometry and motion tracking for optical mapping of contracting hearts: Validation with monophasic action potentials

The Journal of Physiology, EarlyView.
Abstract figure legend Motion‐correction pipeline and validation with monophasic action potential (MAP). Left, contractile motion introduces artefacts in dual‐camera optical signals, with dual‐emission imaging used for ratiometry. Middle, motion correction using motion tracking and ratiometry, with displacement vectors overlaid on images and improved ...
Vineesh Kappadan, Zhen Hua, Johanna B. Tonko, Najmah Mohamed, Jan Lebert, Paraskevas Efstathiou, Yasser Abdelghani, Danya Agha‐Jaffar, Anies Sohi, Xianbo Sun, Jean‐Baptiste Guichard, Jan Christoph, Nicholas S. Peters, Fu Siong Ng   +13 more
wiley   +1 more source

Global Observational Comparison of Large‐Scale Traveling Atmospheric and Ionospheric Disturbances During the May 2024 Geomagnetic Storm

Geophysical Research Letters, Volume 53, Issue 12, 28 June 2026.
Abstract During the geomagnetic storm on 10 May 2024, neutral density measurements from 14 Tianmu, Swarm, and GRACE‐FO satellites at ∼510 km altitude, combined with total electron content (TEC) observations, enabled the first global observational comparison of large‐scale traveling atmospheric and ionospheric disturbances (LSTADs/TIDs) via snapshots ...
Xiaolong Wei, Guoying Jiang, Yajun Zhu, Yongping Li, Jiangzhao Ai, Tingwei Han, Huijun Le, Aibin Zhang, Jiyao Xu   +8 more
wiley   +1 more source

Dynamic Holographic Display With Multiplexed Dielectric Metasurfaces

Nanophotonics, Volume 15, Issue 12, 25 June 2026.
Based on multiplexed metasurfaces, we show hybrid multiplexing of polarization, wavelength, and orbital angular momentum can be applied for dynamic tuning. Our strategy presents a highly compact and efficient solution for high‐capacity, multi‐dimensional holography, with promising applications in advanced displays, data storage, optical encryption, and
Yu Liu, Yu‐Tong Xiao, Xing‐Yuan Huo, Qing Cai, Rui Zhong, Ling‐Yuan Zhang, Ruwen Peng, Yongmin Liu, Mu Wang   +8 more
wiley   +1 more source

Direct wavefront sensing enables functional imaging of infragranular axons and spines. [PDF]

Nat Methods, 2019
Liu R, Li Z, Marvin JS, Kleinfeld D.
europepmc   +1 more source

Engineering Angular Dispersion via Hybrid Local–Nonlocal Metasurfaces

Nanophotonics, Volume 15, Issue 12, 25 June 2026.
A single‐layer hybrid local–nonlocal silicon metasurface is experimentally demonstrated as a polarization‐insensitive angular filter in transmission. By combining local nanopillar response, lattice‐mediated interactions near the Rayleigh anomaly, and diffraction‐assisted substrate coupling, the platform maintains high transmission within a ±15° $\pm ...
Shany Z. Cohen, Luna Sinitsky, Sukanta Nandi, Leeju Singh, Amos Sharoni, Tomer Lewi   +5 more
wiley   +1 more source

Quantitative Phase and Intensity Microscopy Using Snapshot White Light Wavefront Sensing. [PDF]

Sci Rep, 2019
Wang C, Fu Q, Dun X, Heidrich W.
europepmc   +1 more source