Results 51 to 60 of about 905 (174)
Fundamental absorption bandwidth to thickness limit for transparent homogeneous layers
Past work has considered the analytic properties of the reflection coefficient for a metal-backed slab. The primary result established a fundamental relationship for the minimal layer thickness to bandwidth ratio achievable for an absorber. There has yet
Padilla Willie J. +3 more
doaj +1 more source
Corrosion Analysis of Rapidly Solidified and Subsequently Aged Al‐Ni and Al‐Fe‐Ni Alloys
Fe addition modifies intermetallic phase chemistry and microgalvanic interactions in Al‐Ni alloys, shifting corrosion from generalized dissolution to localized attack. ABSTRACT This study investigates the influence of Fe addition and heat treatment on the corrosion behavior of Al–5 wt.%Ni and Al–2 wt.%Fe–1.5 wt.%Ni alloys, with particular emphasis on ...
Jaderson Rodrigo da Silva Leal +4 more
wiley +1 more source
Polarization‐Dependence of Nonlinear Optical Effects in Silicon: The Case of Ultrafast Processing
The dependence of the input polarization for the nonlinear optical propagation in silicon is investigated theoretically and experimentally. The perturbative regime is examined using pump‐probe shadowgraphy and nonlinear transmission, whereas the case of permanent laser‐induced modifications is addressed using a combination of Raman micro‐spectroscopy ...
Namig Alasgarzade +6 more
wiley +1 more source
Designing refractive index fluids using the Kramers–Kronig relations
Kramers–Kronig relations can be used to control the interplay of light absorption and dispersion. This concept is demonstrated by using bright commodity food dyes to design non-toxic high refractive index fluids.
Tianqi Sai +4 more
openaire +6 more sources
Integrated Photonic Modulator Circuit With Programmable Intensity and Phase Modulation Response
A platform‐agnostic programmable modulation circuit is introduced to enable tunable and universal optimization of integrated photonic modulators. By flexibly controlling carrier amplitude and phase, the approach adapts to diverse device characteristics without structural redesign.
Hong Deng +3 more
wiley +1 more source
A new class of sulfur‐free, oxygen‐bridged dibenzofuran‐based polymers is developed for ultrahigh‐refractive‐index applications. The rigid π‐extended architecture and enhanced molecular polarizability enable exceptional optical performance, combining refractive indices up to 1.848 with high Abbe numbers and full visible transparency. This work offers a
Hend A. Hegazy +5 more
wiley +1 more source
Unraveling the Thermal Response From Individual Multipole Resonances in Magnetodielectric Spheres
A semi‐analytical framework resolves electromagnetic heating into individual multipolar contributions and an inter‐order coupling correction, linking internal modal fields to local dissipation, temperature evolution, and heat flux. Applied to dual‐symmetric magnetodielectric spheres, it reveals balanced polarization and magnetization losses and ...
Jhon James Hernández‐Sarria +3 more
wiley +1 more source
This study employs density functional theory (DFT) to investigate the structural, mechanical, electronic, optical, and thermodynamic properties of RbGaO2 and CsGaO2. The calculated band structures and band‐edge positions indicate semiconducting behavior and favorable alignment for photocatalytic dye degradation and hydrogen evolution, highlighting ...
Md. Zuel Rana +9 more
wiley +1 more source
The top panel shows the electronic band structure, which illustrates how the electronic energy varies with momentum along different high‐symmetry directions within the first Brillouin zone. Band structure determines the electronic character of a crystalline solid.
Tanvir Khan, F. Parvin, S. H. Naqib
wiley +1 more source
Kinetic Contribution to the Arbitrary Order Odd Frequency Moments of the Dynamic Structure Factor
ABSTRACT An exact expression is derived for the kinetic contribution to the odd (arbitrary order) frequency moments of the dynamic structure factor via a finite summation that features averages of even (all lower orders) powers of the momentum over the exact momentum distribution.
Panagiotis Tolias +2 more
wiley +1 more source

