Results 111 to 120 of about 201,674 (321)

Integration of Perovskite/Low‐Dimensional Material Heterostructures for Optoelectronics and Artificial Visual Systems

open access: yesAdvanced Functional Materials, EarlyView.
Heterojunctions combining halide perovskites with low‐dimensional materials enhance optoelectronic devices by enabling precise charge control and improving efficiency, stability, and speed. These synergies advance flexible electronics, wearable sensors, and neuromorphic computing, mimicking biological vision for real‐time image analysis and intelligent
Yu‐Jin Du   +11 more
wiley   +1 more source

Continuous-wave operation of 1550 nm low-threshold triple-lattice photonic-crystal surface-emitting lasers

open access: yesLight: Science & Applications
Benefitting from narrow beam divergence, photonic crystal surface-emitting lasers are expected to play an essential role in the ever-growing fields of optical communication and light detection and ranging.
Ziye Wang   +8 more
doaj   +1 more source

1D photonic crystal filled with low-temperature plasma for controlling broadband microwave transmission

open access: yesAIP Advances, 2019
A 1D plasma photonic crystal (PPC) is filled with plasmas and slab dielectrics in a large volume cylindrical glow discharge device. The parameters of the PPC are designed to meet the transmission condition of broadband microwave (1.5GHz-12GHz) according ...
Jingfeng Yao   +7 more
doaj   +1 more source

Upconversion Emission Modification and White Light Generation in NaYF 4:Yb 3+, Er 3+, Tm 3+ Nanocrystals/Opal Photonic Crystal Composites

open access: yesIEEE Photonics Journal, 2015
In this paper, we fabricated NaYF 4:Yb3+, Er3+, Tm3+ nanocrystal/opal photonic crystal composites by depositing NaYF 4:Yb3+, Er3+, Tm3+ nanocrystals on the surface of opal photonic crystals, and we investigated the influence of photonic bandgaps on ...
Z. W. Yang   +5 more
doaj   +1 more source

Theory of probing a photonic crystal with transmission near-field optical microscopy [PDF]

open access: green, 1998
Garnett W. Bryant   +5 more
openalex   +1 more source

Low‐Loss Far‐Infrared Surface Phonon Polaritons in Suspended SrTiO3 Nanomembranes

open access: yesAdvanced Functional Materials, EarlyView.
The low‐loss, highly confined, and thickness‐tunable surface phonon polaritons are demonstrated in the far‐infrared regime within transferable freestanding SrTiO3 membranes, achieving high figures of merit comparable to the previous record values from the vdW materials.
Konnor Koons   +8 more
wiley   +1 more source

Higher-order modes excitation in generator with photonic crystal

open access: yesResults in Physics, 2019
We revealed physical processes responsible for the excitation of higher-order modes in volume free-electron laser with photonic crystal. We discovered the new approach for the selection of the electromagnetic modes in volume free-electron laser with ...
Artem A. Badarin   +5 more
doaj  

Symmetry reduction in group4mmphotonic crystals [PDF]

open access: green, 1997
Cheryl M. Anderson   +1 more
openalex   +1 more source

Fractional Skyrmion Tubes in Chiral‐Interfaced 3D Magnetic Nanowires

open access: yesAdvanced Functional Materials, EarlyView.
In chiral 3D helical magnetic nanowires, the coupling between the geometric and magnetic chirality provides a way to create topological spin states like vortex tubes. Here, it is demonstrated how the breaking of this coupling in interfaced 3D nanowires of opposite chirality leads to even more complex topological spin states, such as fractional ...
John Fullerton   +11 more
wiley   +1 more source

Wakefields in photonic crystal cavities

open access: yesPhysical Review Special Topics. Accelerators and Beams, 2009
Simulations of charged particle beams in accelerator cavities show that a two-dimensional photonic crystal can be used to create a three-dimensional hybrid cavity with a single operating mode and no significant higher order modes, greatly reducing long ...
Gregory R. Werner   +2 more
doaj   +1 more source

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