Results 151 to 160 of about 5,582 (240)
ABSTRACT While oasis settlements emerged during the Bronze Age in Eastern and Northern Arabia, the settlement process in Central Arabia was different. Excavations at al‐Yamāma—main ancient settlement of the al‐Kharj oasis (Riyadh Province, KSA)—suggest that the latter did not emerge before the second half of the first millennium BCE.
Elora Chambraud +4 more
wiley +1 more source
Numerical Approach to Modeling and Characterization of Refractive Index Changes for a Long-Period Fiber Grating Fabricated by Femtosecond Laser. [PDF]
Saad A, Cho Y, Ahmed F, Jun MB.
europepmc +1 more source
Optical Detection of Cellular Signals at Material Interfaces
Emerging functional materials are transforming optical detection of cellular signals. This review highlights optical techniques that exploit the unique optical properties of diverse materials to detect and quantify cellular electrical, chemical, and mechanical signals, and discusses key opportunities and challenges.
Xuchen Ren +5 more
wiley +1 more source
Graphene-Based Long-Period Fiber Grating Surface Plasmon Resonance Sensor for High-Sensitivity Gas Sensing. [PDF]
Wei W +8 more
europepmc +1 more source
We present elastomeric three‐dimensional (3D) microstructures fabricated via two‐photon polymerization (2PP) and post‐processed through wet etching, for quantifying nanonewton (nN)‐scale forces applied by healthy and diseased neural cells. The mechanically characterized free‐standing beam architectures enable measurement of traction forces of ...
Pieter F. J. van Altena +7 more
wiley +1 more source
An architecture for measuring joint angles using a long period fiber grating-based sensor. [PDF]
Perez-Ramirez CA +5 more
europepmc +1 more source
Distributed optical fiber sensing (DOFS) is reviewed as a transformative technology for intelligent monitoring of transportation infrastructures. Advances in sensing fibers, cable design, and data analytics are summarized alongside representative field applications.
Xin Gui +11 more
wiley +1 more source
Focusing Polarization‐Splitting Grating Coupler in Lithium Niobate on Insulator Photonic Platform
Compact, focusing polarization‐selective grating coupler with low (<1 dB) polarization‐dependent loss (PDL), operating at the telecom C‐band and fabricated at a standard LNOI foundry using a process design kit (PDK). Lithium niobate‐on‐insulator (LNOI) is a rapidly emerging platform for integrated photonics, offering high‐speed modulation, efficient ...
Dor Oz +7 more
wiley +1 more source
In this work, thin‐film lithium niobate Mach–Zehnder modulators are realized using codesigned slow‐light optical waveguides and inductively loaded RF electrodes. This dual slow‐wave engineering optimizes velocity matching, achieving Vπ·L = 0.3 V cm, bandwidths up to 200 GHz, Vπ ≤ 1 V, and short device lengths, offering an efficient solution for high ...
Zobeyde Dadkhah +2 more
wiley +1 more source
A Micro Rectangular-Shaped Long-Period Fiber Grating Coated With Fe₃O₄ Nanoparticle Thin Overlay For Magnetic Sensing. [PDF]
Wang SF, Chiang CC.
europepmc +1 more source

