Results 91 to 100 of about 4,136 (218)
Complete phononic bandgaps and bandgap maps in two-dimensional silicon phononic crystal plates
, 2007 International audienceUsing a plane wave expansion (PWE) method, the band structure of a silicon (Si) phononic crystal slab with periodically etched vertical holes is obtained.
Khelif, Abdelkrim +6 more
core +1 more source
Ultralow‐Backscattering Induced Mode Splitting in Chipscale Valley Photonic Topological Cavities
Laser &Photonics Reviews, EarlyView.The proposed in‐situ metrology based on mode splitting quantifies the ultralow backscattering of topological valley edge states at a single sharp corner, demonstrating near‐lossless topological transport (0.09 dB/corner) on a silicon chip. This work provides insight into the robustness of the photonic valley system and shows the great potential of ...
Kaiji Chen +5 more
wiley +1 more source
Asymptotic Modeling of Phononic Box Crystals
SIAM Journal on Applied Mathematics, 2019 We introduce phononic box crystals, namely arrays of adjoined perforated boxes, as a three-dimensional prototype for an unusual class of subwavelength metamaterials based on directly coupling resonating elements. In this case, when the holes coupling the boxes are small, we create networks of Helmholtz resonators with nearest-neighbour interactions. We
Alice L. Vanel +2 more
openaire +3 more sources
Measurements of Lamb-Wave Band Gaps and Waveguiding in 2-D Si-Based Phononic-Crystal Plates
, 2007 聲子晶體是由數種彈性材料週期性排列而成，當聲波在聲子晶體結構中傳遞時，由於波傳之頻散曲線不連續，造成該不連續的頻段內，聲波無法傳遞，此現象稱之為聲波頻溝(acoustic band gap)。若在此頻段內聲波不論沿任何方向均無法傳遞，則稱之為全頻溝(complete band gap)。在頻溝範圍內，若將無窮週期的聲子晶體結構移除一或數排，形成之線缺陷可做為聲子晶體波導(phononic-crystal waveguide)，則原本在頻溝內無法形成模態的頻率，將會在此缺陷結構中形成可傳遞的缺陷模態 ...
Kuo, Wei-Chih, 郭維志
core
Journal of Polymer Science, EarlyView.In this work, a novel expanded graphite‐supported nano‐copper polydopamine composite was designed and synthesized. The procedure involved first modifying EG via a mussel‐inspired technique to deposit a polydopamine coating, after which Cu2+ ions were reduced to immobilize copper nanoparticles onto the EG‐PDA substrate.
Xingrong Liu, Fan Xia, Dietmar Auhl
wiley +1 more source
AIP Advances, 2014 This work deals with an analytical and numerical study of the focusing of the lowest order anti-symmetric Lamb wave in gradient index phononic crystals.
J. Zhao, B. Bonello, O. Boyko
doaj +1 more source
Aggregate, Volume 7, Issue 6, June 2026.The review discusses stimuli‐responsive hydrogels as soft optical materials that translate physical, chemical, and biological cues into refractive‐index, scattering, birefringence, diffraction, and transparency changes. It examines major stimulus classes and photonic architectures for biosensing, waveguiding, adaptive lenses, smart windows, and therapy.
Andrés Bernal‐Ballén +2 more
wiley +1 more source
Twist Engineering of Hybrid 2D van der Waals‐Transition Metal Oxide Membranes
Advanced Physics Research, Volume 5, Issue 6, June 2026.The integration of transition metal oxide membranes with 2D van der Waals materials offers exciting opportunities to study new interfacial phenomena. These interactions can create complex moiré patterns that change the materials' properties. Understanding these interactions, influenced by symmetry and distortion, poses significant challenges and ...
Mar Garcia Hernandez +4 more
wiley +1 more source
The Progress of Orbitronics: The Enhancement of Orbital Torque Efficiency
Advanced Physics Research, Volume 5, Issue 6, June 2026.Orbit‐torque (OT) devices attract significant attention for their low‐power consumption and high stability in applications. This review systematically outlines strategies for enhancing OT efficiency. We categorize approaches into boosting orbital currents/torques and improving the orbital‐to‐spin conversion coefficient.
Pengfei Liu +6 more
wiley +1 more source
Lithium niobate phononic crystal for surface acoustic waves
, 2006 International audienceThe recent theoretical and experimental demonstrations of stop bands for surface acoustic waves have greatly enlarged the potential application field for phononic crystals.
Rauch, Jean-Yves +4 more
core +1 more source