Results 171 to 180 of about 15,815 (311)
Advanced Materials, EarlyView.A deep learning inverse‐design framework is established to create versatile reconfigurable terahertz metadevices. By synergizing deep learning with phase‐change materials, this approach enables on‐demand customization of multidimensional electromagnetic responses.
Yisheng Dong +11 more
wiley +1 more source
On-chip silicon based photonic structures : photonic band gap and quasi-photonic band gap materials
, 2004 Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 2004."June 2004."Includes bibliographical references (leaves 170-180).This thesis focuses on integrated silicon based photonic structures, photonic band gap (PBG) and quasi ...
Yi, Yasha, 1974-
core
Full Vectorial Field Sensing Using Liquid Crystal Droplet Arrays
Advanced Materials, EarlyView.An inkjet‐printed liquid crystal droplet array enables compact, low‐cost, single‐shot sensing of the full vectorial light field. Within a single platform, it simultaneously retrieves intensity, polarization, and phase, while dual‐wavelength operation highlights its capability for multi‐wavelength optical field characterization. ABSTRACT Determining the
Xuke Qiu +10 more
wiley +1 more source
Photonic band structures of 2d photonic crystals with half-elliptical holes
Moldavian Journal of the Physical Sciences, 2012 In recent years, periodic photonic crystal structures have attracted much attention due to potential application in controlling electromagnetic wave propagation [1].
Marin, Adriana +6 more
doaj
Near‐Unity Chiral Lasing Enabled by Quasi‐Bound States in the Continuum
Advanced Materials, EarlyView.Nanoimprinted chiral array that supports bound states in the continuum is doped with an efficient non‐chiral molecule (Rhodamine‐B) acting as gain medium to produce fully circularly polarized lasing emission. The chiral lasing wavelength can be tuned across the emission band of Rhodamine‐B by adjusting the coating thickness of the TiO2 high refractive ...
Jose Mendoza‐Carreño +5 more
wiley +1 more source
Mechanical Stress Evolution in Polycrystalline Ge Thin Films Under MeV Ion Irradiation
Advanced Materials Interfaces, EarlyView.Irradiation of polycrystalline Ge thin films with 1.8 MeV Au ions alters residual stress through defect generation and lattice expansion. Increasing fluence drives progressive lattice disorder and eventual amorphization. Polycrystalline Ge resists amorphization longer than crystalline Ge, as grain boundaries facilitate defect diffusion, significantly ...
Karla J. Paz Corrales +10 more
wiley +1 more source
Photonic Band Gap Engineering by Varying the Inverse Opal Wall Thickness. [PDF]
Int J Mol SciKarajz DA +7 more
europepmc +1 more source
High‐Sensitivity Terahertz Gas Sensing Enabled by Undercut Metal‐Dielectric‐Metal Metamaterial
Advanced Materials Interfaces, EarlyView.A terahertz (THz) metamaterial gas sensor is demonstrated using a metal–dielectric–metal (MDM) absorber with an undercut dielectric layer, which enlarges the gas‐replaced volume and strengthens refractive‐index perturbation of the resonant mode. A reflection dip at 0.766 THz is observed, and acetone–nitrogen tests yield concentration‐dependent shifts ...
Naoki Inomata +2 more
wiley +1 more source
Stealthy and hyperuniform isotropic photonic band gap structure in 3D. [PDF]
PNAS NexusSiedentop L +7 more
europepmc +1 more source