Results 221 to 230 of about 42,935 (288)

Tamm plasmonic-based elliptical anisotropic photonic crystals with multifunctional optical features. [PDF]

Sci Rep
Jooyandeh S, Farzad MH.
europepmc   +1 more source

Chiral Quasi‐BICs Stemming From a Γ‐point Degeneracy

Laser &Photonics Reviews, EarlyView.
Band degeneracies universally exist in 2D periodic systems. However, the studies on the intrinsic properties of those isolated points remain limited. By exploring 3D chiral perturbations, chiral quasi‐BICs are achieved through a Γ‐point degeneracy in resonant metasurfaces with C4 symmetry.
Bohan Zhang, Dongha Yang, Yuhao Wu, Mingqi Zheng, Wei Zhu, Lei Kang, Kang Du, Douglas H. Werner, Shengxiang Wang   +8 more
wiley   +1 more source

3D topologically polarized elastic metamaterials enable asymmetric energy isolation at finite frequencies. [PDF]

Sci Adv
Zhang S, Gong X, Ma F, Tang Z, Wu Y, Zhou D, Li F, Yao Y.   +7 more
europepmc   +1 more source

Multispectral Mid‐Infrared Imaging With Incoherent Light via Adiabatic Upconversion

Laser &Photonics Reviews, EarlyView.
We demonstrate room‐temperature broadband MIR imaging based on adiabatic frequency upconversion, driven by a Q‐switched pump laser and incoherent illumination. The small‐foot‐print system upconverts the spectral range to the visible domain, without scanning, thermal control and with spatial resolution below 20μm$20\mathrm{\mu}\mathrm{m}$.
Daniel Beitner, Ziv Abelson, Eyal Hollander, Omri Meron, Haim Suchowski   +4 more
wiley   +1 more source

Time‐Modulated Optomechanics Reveal Energy Flow and Inelastic Interactions Between Acoustic Phonons in Nanomembranes

Laser &Photonics Reviews, EarlyView.
Temporal interfaces are abrupt refractive index changes used in time‐varying optics, but also transitions to nonequilibrium states. This work explores the inelastic scattering of time‐varying light by nonthermal acoustic phonons in the vicinity of temporal interfaces.
Anuj Kumar Dhiman, Piotr Graczyk, Tobias Held, Mikolaj Pochylski, Kleoniki Sympoura, Rafal Bialek, Jacek Gapinski, Bahram Djafari Rouhani, Baerbel Rethfeld, Bartlomiej Graczykowski, Thomas Vasileiadis   +10 more
wiley   +1 more source

Mass-Loaded Metamaterials Based on Polymer Matrix with Static-Dynamic Decoupling for Pressure-Resistant Broadband Underwater Sound Absorption. [PDF]

Polymers (Basel)
Liu L, Wang Y, Xu S, Yang H, Zhong J, Liang C, Wen J.   +6 more
europepmc   +1 more source

Symmetry Breaking Enables Direction‐Selective Power Routing Between Diffraction and Dissipation in Obliquely Metallized Opaque Metagratings

Laser &Photonics Reviews, EarlyView.
Oblique metallization creates one‐sided opaque metagratings that route zero‐order‐hidden optical power between nonzero diffraction and material dissipation. Cross‐sectional‐SEM‐guided models reproduce measured zero‐order spectra and reveal direction‐selective channel exchange governed by morphology and Rayleigh‐order availability.
Ye Ming Qing, Yi Shen, Shunsuke Murai, Katsuhisa Tanaka, Koichi Okamoto   +4 more
wiley   +1 more source

A Review of Machine Learning Applications in Mechanical Metamaterial Design. [PDF]

Materials (Basel)
Turysbekov G, Auyeskhan U, Yankin A, Perveen A, Talamona D.   +4 more
europepmc   +1 more source

Leaky Topological Edge State Cavities for On‐Chip Terahertz Sensing

Laser &Photonics Reviews, EarlyView.
Engineering radiation leakage in topological edge state cavities (TESCs) turns a conventional loss channel into a resource for enhancing on‐chip terahertz‐matter interactions. Tailoring the radiation leakage of a valley photonic crystal produces guided TESC with loaded Q factors up to 14 148 and leaky TESC with 2.2‐fold higher sensitivity, reaching 150.
Wenhao Wang, Zhonglei Shen, Ranjan Singh
wiley   +1 more source

Chip‐Scale Terahertz Sensing Driven by Supercoupling Induced Transparency in Topological Cavities

Laser &Photonics Reviews, EarlyView.
Supercoupling‐induced transparency (SIT) in topological cavities enables sensitive terahertz sensing on a chip. Strong field confinement and slow light response enhance interactions with thin films, enabling thickness detection through resonance shifts and group delay changes.
Wenhao Wang, Zhonglei Shen, Ranjan Singh
wiley   +1 more source