Results 201 to 210 of about 121,274 (339)
Engineering Topological Phases with a Traveling‐Wave Spacetime Modulation
Laser &Photonics Reviews, EarlyView.Time‐varying systems have garnered considerable attention due to their unique potential in manipulating electromagnetic waves. Here, a novel class of topological spacetime crystals with a traveling‐wave modulation is introduced. By manipulating material anisotropy, one can engineer light angular momentum and non‐trivial topological phases characterized
João C. Serra, Mário G. Silveirinha
wiley +1 more source
A Decoupled Doppler Positioning Algorithm for Dynamic Receivers Using LEO Constellation Signals. [PDF]
Sensors (Basel)Liu T +6 more
europepmc +1 more source
Laser &Photonics Reviews, EarlyView.In this work, we investigated the dynamic retinal pathology of glaucoma from onset to late stages through longitudinal in vivo high‐resolution imaging in a silicone oil‐induced ocular hypertension (SOHU) glaucoma mouse model. We developed an optimized adaptive optics two‐photon excitation fluorescence microscopy (AO‐TPEFM) technique for morphological ...
Yiming Fu +6 more
wiley +1 more source
Brain Point-of-Care Ultrasound (BrainPOCUS) in Adult Critical Care: An Introduction to Methods. [PDF]
CureusCashmore RM, Jha AK.
europepmc +1 more source
Faraday–Ramsey Rotation in Ultrathin Alkali Vapor Cells as an Analogy to Atomic‐Beam Systems
Laser &Photonics Reviews, EarlyView.This work demonstrates that ultrathin rubidium vapor cells can emulate atomic‐beam behavior through geometry‐dependent velocity filtering. Employing a spatially separated pump–probe scheme and Faraday–Ramsey rotation, the study reveals coherent atomic dynamics without buffer gas or anti‐relaxation coatings. This approach offers a compact pathway toward
Mark Dikopoltsev +4 more
wiley +1 more source
Doppler Assessment of the Fetal Brain Circulation. [PDF]
Diagnostics (Basel)Sá MI, Illa M, Guedes-Martins L.
europepmc +1 more source
Effect of Doppler Shift frequency on the performance of 2x2 OSTBC-OFDM System
, 2017 Diana Hayder Hussein +1 more
openalex +1 more source
Ultrasensitive Doppler Raman spectroscopy using radio frequency phase shift detection [PDF]
, 2019 David R. Smith +7 more
openalex +1 more source
Laser &Photonics Reviews, EarlyView.This review examines how optical coherence tomography transforms industrial inspection by delivering real‐time, micrometer‐resolution, depth‐resolved imaging. It surveys applications across display manufacturing, thin films, microelectronics, laser processing, and coatings, evaluates performance against conventional techniques, and highlights emerging ...
Nipun Shantha Kahatapitiya +7 more
wiley +1 more source
Ghost peaks mitigation with target-contaminated reference signal in passive bistatic radar. [PDF]
Sci RepZhang Y, Ge L, Wu Y.
europepmc +1 more source