Results 151 to 160 of about 5,194,279 (273)

Parity‐Dependent THz Harmonic Generation in Electrically Pumped Micro‐Lasers Exploiting Topological Insulator–Metamaterial Gratings

Advanced Materials, EarlyView.
Topological insulator–metamaterials integrated with electrically driven terahertz quantum cascade lasers enable parity‐dependent harmonic generation. Bulk‐dominated Bi2Se3 favors third‐harmonic emission at 9.96 THz, whereas topological‐surface‐state‐dominated Bi2Se3, Bi2Te3, and (Bi,Sb)2Te3 generate strong second harmonics near 6.5 THz.
Alessandra Di Gaspare, Craig S. Knox, Ahmet Yagmur, Sara Ghayeb Zamharir, Lianhe Li, Satoshi Sasaki, A. Giles Davies, Edmund H. Linfield, Joshua R. Freeman, Miriam S. Vitiello   +9 more
wiley   +1 more source

Plasmon‐Enhanced Second‐Harmonic Generation in Atomically Thin Crystalline Silver Nanostructures

Advanced Materials, EarlyView.
Atomically thin crystalline silver films combine vertical quantum confinement with lateral plasmonic field enhancement to boost second‐harmonic generation. Nanoribbon and nanotriangle arrays enable geometry‐tunable infrared plasmon resonances, producing strong SHG from deeply subwavelength metallic volumes compatible with silicon‐based nanophotonics ...
Saad Abdullah, Philipp K. Jenke, Andrew P. Weber, Álvaro Rodríguez Echarri, Vahagn Mkhitaryan, Fadil Iyikanat, Frederik Schiller, Philip Walther, J. Enrique Ortega, Lee A. Rozema, F. Javier García de Abajo   +10 more
wiley   +1 more source

Intracavity laser frequency mixing under quasi-phase-matching condition

openalex   +1 more source

Surface Functionalization Modulates Collective Cell Behavior Near Topological Defects Induced by Topographical Patterning

Advanced Materials Interfaces, EarlyView.
Strongly adhered cells align with concentric circular ridges and exhibit predominantly tangential motion, whereas weakly adhered cells fail to follow topographical guidance and display enhanced radial inward motion. ABSTRACT Living cells establish long‐range orientational order through collective alignment, giving rise to topological defects whose ...
Prasoon Awasthi, Aniruddh Murali, Ellen Juel Pørtner, Adam Cohen Simonsen, Francesca Serra   +4 more
wiley   +1 more source

Terahertz generation in quasi-phase-matching structures using femtosecond laser pulses

, 2007
Terahertz radiation generated by using femtosecond laser pulses was demonstrated in a periodically poled lithium niobate crystal. Two different terahertz radiations, forward and backward, could be obtained in the quasi-phase matching structures due to ...
Ko D.-K., Kee C.-S., Lee W.-J., Kim, Jae Eun, Yu N.E., Lee J., Jung C., Park H.Y., Yu B.-A., Lee Y.L.   +9 more
core   +1 more source

Analytical modeling with segmented quasi-phase matching LiNbO3 for voltage-controlled second harmonic generation spectra

Ugrasen Singh, Abhinav Kumar, Prashant Povel Dwivedi, Ajay Mishra, Nimish Dixit   +4 more
openalex   +1 more source

Recent Advances in Plasma‐Enhanced Atomic Layer Etching for Next‐Generation Nanofabrication

Advanced Materials Interfaces, EarlyView.
Continued semiconductor miniaturization demands atomic‐scale patterning and ultralow surface roughness beyond the capabilities of conventional reactive ion etching. This review highlights advances in isotropic and anisotropic plasma‐enhanced atomic layer etching since 2020, covering fundamental mechanisms, applications across major semiconductor ...
Shih‐Nan Hsiao
wiley   +1 more source

Thermoplastic Dielectric Coatings for Flexible Electrodynamic Dust Shields: Structural and Functional Performance

Advanced Materials Interfaces, EarlyView.
Thermoplastic attachment is introduced as a scalable surface coating strategy to improve the durability and dielectric reliability of flexible electrodynamic dust shields. By embedding chemically modified reduced graphene oxide (CMrGO) electrodes within thermoplastic laminates, mechanical degradation, abrasion damage, and vacuum‐induced electrical ...
Ide E. Onal, Emily A. Ryan, Luca Scifoni, Thomas M. Orlando, Álvaro Romero‐Calvo, Julie S. Linsey, Meisha L. Shofner   +6 more
wiley   +1 more source

Generation of light with controllable spatial patterns via the sum frequency in quasi-phase matching crystals. [PDF]

Sci Rep, 2014
Zhou ZY, Li Y, Ding DS, Jiang YK, Zhang W, Shi S, Shi BS, Guo GC.   +7 more
europepmc   +1 more source

Non-volatile, on/off control of the quasi-phase matching interaction in a ferroelectric nonlinear optical crystal

Laura Barrett, Yan D. R. Machado, Carlota Canalias   +2 more
openalex   +1 more source