Results 111 to 120 of about 583,984 (377)
Nanophotonics, 2021 Recently, multiscale three-dimensional (3D) structures consisting of micrometer-scale structure and nanometer-scale structure have received some attention from scientists in the field of surface-enhanced Raman scattering (SERS).
Zhou Yaning +10 more
doaj +1 more source
Terahertz optically tunable dielectric metamaterials without microfabrication
, 2012 We theoretically investigate the terahertz dielectric response of a semiconductor slab hosting an infrared photoinduced grating. The periodic structure is due to the charge carries photo-excited by the interference of two tilted infrared plane waves so ...
Brambilla, Massimo +4 more
core +1 more source
The Dioptrics of Gratings [PDF]
Proceedings of the London Mathematical Society, 1892 n ...
openaire +2 more sources
Ultraviolet–Visible Spin‐Resolved Chip‐Scale Spectroscopy
Advanced Functional Materials, EarlyView.By harnessing phase, wavelength, and spin multiplexing, the proposed meta‐spectrometer enables spin‐resolved spectral analysis within a compact footprint. The presented dual‐band (320–450 nm) spin‐resolved meta‐spectrometer features enhance optical functionality, allowing for the simultaneous discrimination of spectral content and spin states of light ...
Nasir Mahmood +9 more
wiley +1 more source
Reversible Mode Switching in Y coupled Terahertz Lasers
, 2013 Electrically independent terahertz (THz) quantum cascade lasers (QCLs) are optically coupled in a Y configuration. Dual frequency, electronically switchable emission is achieved in one QCL using an aperiodic grating, designed using computer-generated ...
Beere, Harvey E. +4 more
core +1 more source
Advanced Functional Materials, EarlyView.The influence of postdeposition treatments on the formation of self‐assembling (mono)layers commonly utilized as hole transport layers in perovskite‐based solar cells is thoroughly investigated. The implementation of a washing step and an annealing step at temperatures exceeding the current literature standards leads to an enhanced layer quality and ...
Jann B. Landgraf +14 more
wiley +1 more source
Experiment and Simulation of a Selective Subwavelength Filter with a Low Index Contrast
Nanomaterials, 2019 Subwavelength gratings have been of great interest recently due to their ability to eliminate multiple orders. However, high index contrast ( Δ n ∼ 3 ) is typically achieved using metals or high-index dielectrics surrounded by vacuum in ...
Tao Li +8 more
doaj +1 more source
Optical Response of Grating-Coupler-Induced Intersubband Resonances: The Role of Wood's Anomalies
, 1997 Grating-coupler-induced collective intersubband transitions in a quasi-two-dimensional electron system are investigated both experimentally and theoretically.
Berger, A. +7 more
core +1 more source
Advanced Functional Materials, EarlyView.Spinal cord injury (SCI) poses significant challenges for regeneration due to a series of secondary injury mechanisms. How to use biomaterial approach to target the failed regeneration after SCI remains a critical challenge. This review systematically evaluates current strategies to optimize biomaterial topographies for neurite outgrowth, axonal ...
Wei Xu +7 more
wiley +1 more source
Flat dielectric grating reflectors with focusing abilities [PDF]
, 2010 Sub-wavelength dielectric gratings have emerged recently as a promising alternative to distributed Bragg reflection dielectric stacks for broadband, high-reflectivity filtering applications.
D. Fattal +4 more
semanticscholar +1 more source