Results 141 to 150 of about 3,011 (223)

Directional X‐Ray Scattering and Microtomography for Laboratory‐Based Imaging of Fibrous Materials and Biological Tissues

Small Science, Volume 6, Issue 8, August 2026.
A compact laboratory X‐ray system enables directional dark‐field imaging and tomography with sensitivity to scattering along two orthogonal directions. The approach provides volumetric mapping of sub‐resolution microstructure in engineering and biological samples, which reveals structural heterogeneity, fiber organization, and anisotropic scattering ...
Carlos Navarrete‐León, Álvaro José González‐Grajales, Harry Allan, Adam Doherty, Alissa Parmenter, Rocco D’Antuono, David Bate, Alberto Astolfo, Silvia Cipiccia, Charlotte K. Hagen, Alessandro Olivo, Marco Endrizzi   +11 more
wiley   +1 more source

A Robust, Low‐Cost Conductance Sensor for High Resolution Real‐Time Monitoring of Streambed Pore Water Dynamics

Water Resources Research, Volume 62, Issue 8, August 2026.
Abstract The groundwater—surface‐water interface is an important regulator of many biogeochemical processes along river corridors. One of the main drivers of these processes is the pore water travel time along hyporheic flow paths. However, our understanding and ability to predict the spatial‐temporal dynamics of subsurface travel times are limited ...
Nicolai Brekenfeld, Sophie Comer‐Warner, Theresa Blume, Nicholas Kettridge, David M. Hannah, Kevin Bishop, Hjalmar Laudon, Hanna Schulz, Adam S. Ward, Stefan Krause   +9 more
wiley   +1 more source

Spatial Partitioning of Microbial Functional Potential Suggests Complex Nitrogen Cycling in a Subterranean Estuary

Environmental Microbiology, Volume 28, Issue 8, August 2026.
Microbial communities in a Mediterranean subterranean estuary show spatially structured nitrogen‐cycling potential across hydrochemical zones. Microbial properties, more than environmental variables, predict NO2− and NH4+ concentrations, highlighting their key role in controlling nitrogen transformations prior to submarine groundwater discharge ...
Daniel Romano‐Gude, Nestor Arandia‐Gorostidi, Catalina Mena, Marc Diego‐Feliu, Bella Almillategui, Anna J. Székely, Stefan Bertilsson, Andrea G. Bravo, Jesus Carrera, Cristina Romera‐Castillo, Albert Folch, Jordi Garcia‐Orellana, Valentí Rodellas, Clara Ruiz‐González   +13 more
wiley   +1 more source

Optical Phased Arrays on Photonic Integrated Circuit Platforms: Challenges, Opportunities, and Future Applications

Nanophotonics, Volume 15, Issue 14, 27 July 2026.
Integrated optical phased arrays are emerging as scalable engines for solid‐state beam steering and programmable wavefront control. This Review maps the field from beam‐steering principles and core building blocks to material platforms, system‐level bottlenecks, and application frontiers, highlighting how heterogeneous integration, aperiodic ...
Jingwei Li, Yuyuan Han, Aoxiang Chen, Pengpeng Li, Xinglin Zhu, Guanbao Zhao, Luohan Peng, Huaibin Zheng   +7 more
wiley   +1 more source

Inverse‐Designed Silicon Nitride Bimodal Mode Converter for Interferometric Sensors

Nanophotonics, Volume 15, Issue 14, 27 July 2026.
Inverse‐designed bimodal mode converters are demonstrated on two silicon nitride platforms. The devices convert the fundamental mode into near‐balanced pairs of the fundamental and higher‐order modes up to the third order. They are compact and fabrication‐tolerant. Characterization of a bimodal interferometer incorporating these converters demonstrates
Narges Dalvand, Julian L. Pita Ruiz, Boris Le Drogoff, Mohamed Chaker, Michaël Ménard   +4 more
wiley   +1 more source

Embedding Fiber Segment Interferometry for Localization of Defects in Composite Structures

Polymer Composites, Volume 47, Issue 14, Page 12874-12886, 20 July 2026.
Graphical representation of composite structures with embedded fiber optic sensors for structural health monitoring, enabling strain measurement and damage localization under mechanical loading. ABSTRACT In the area of structural health monitoring (SHM), embedding strain sensors into smart composites is a key strategy for detecting failures arising ...
Shiva Mohammadkarimi, Christoph Hemeling, Thomas Kissinger, Florian Puch   +3 more
wiley   +1 more source

Long Period Grating Modified with Quasi-2D Perovskite/PAN Hybrid Nanofibers for Relative Humidity Measurement. [PDF]

Nanomaterials (Basel)
Feng D, Zhang C, Haider SI, Tian J, Wu J, Liu F, Jiang B.   +6 more
europepmc   +1 more source

Integrated-photonics-based systems for polarization-gradient cooling of trapped ions. [PDF]

Light Sci Appl
Corsetti SM, Hattori A, Clements ER, Knollmann FW, Notaros M, Swint R, Sneh T, Callahan PT, West GN, Kharas D, Mahony T, Bruzewicz CD, Sorace-Agaskar C, McConnell R, Chuang IL, Chiaverini J, Notaros J.   +16 more
europepmc   +1 more source

Improving Chirped Fiber Bragg Grating Resolution for Position-Sensitive Sensors in Shock- and Detonation-Driven Experiments. [PDF]

Sensors (Basel)
Bowley TY, Schultz KA, Hudston JA, Klepzig PC, Peterson CR, DeLoach JR, Lundberg TO, Gilbertson S.   +7 more
europepmc   +1 more source

Accurate Determination of the Temperature Sensitivity of UV-Induced Fiber Bragg Gratings. [PDF]

Sensors (Basel)
Cosme M, Pota M, Preizal J, Caldas P, Oliveira R, Nogueira R, Araújo FM, Cruz JL, Rego GM.   +8 more
europepmc   +1 more source