Results 91 to 100 of about 286,805 (345)

Vivid Structural Coloration in Transparent MXene‐Cellulose Nanocrystals Composite Films

Advanced Functional Materials, EarlyView.
Vivid structural coloration in reflectance and high transparency in transmittance modes are observed in biopolymer‐layered composite films. The ultrathin multilayered structures have unique optical appearance, near‐infrared bandgap, and strong optical reflection caused by alternating MXene and cellulose nanocrystals layers with high refractive index ...
Botyo Dimitrov, Valeriia Poliukhova, Claire Joo, Madeline Buxton, Irina Roslyk, Yury Gogotsi, Jacob Crossno, Kirt A. Page, Hilmar Koerner, Dhriti Nepal, Michael E. McConney, Timothy J. Bunning, Vladimir V. Tsukruk   +12 more
wiley   +1 more source

MODELING OF MULTILAYER ULTRATHIN-FILM PHOTONIC CRYSTALS FOR SELECTIVE FILTERS

Doklady Belorusskogo gosudarstvennogo universiteta informatiki i radioèlektroniki, 2019
The aim of the work was to study the optical properties of the one-dimensional photonic crystals from ultrathin alternating layers of titanium and silicon oxides with different order of alternating layers to form defective half-wave layers in the bulk of
L. S. Khoroshko, A. V. Baglov, A. A. Hnitsko   +2 more
doaj   +1 more source

Air-Mode Photonic Crystal Micro-Ring Resonator With Enhanced Quality Factor for Refractive Index Sensing

IEEE Photonics Journal, 2020
Intense light-matter interaction is critical for enabling high-sensitivity refractive index sensors, high-efficiency light sources, and high-performance nonlinear devices.
Yameng Xu, Shubo Hu, Mei Kong
doaj   +1 more source

Refraction and rightness in photonic crystals [PDF]

Optics Express Vol. 13, 8596 (2005), 2006
We present a study on relation between the refraction and rightness effects in photonic crystals applied on a 2D square lattice photonic crystal. The plane wave (the band and equifrequency contour analyses) and FDTD calculations for both TM and TE modes revealed all possible refraction and rightness cases in photonic crystal structures in the first ...
arxiv   +1 more source

Experimental demonstration of evanescent coupling from optical fibre tapers to photonic crystal waveguides [PDF]

, 2003
Experimental results demonstrating nearly complete mode-selective evanescent coupling to a photonic crystal waveguide from an optical fibre taper are presented.
Barclay, P. E., Borselli, M., Painter, O., Srinivasan, K.   +3 more
core   +1 more source

Scattering of light in photonic crystals [PDF]

SPIE Proceedings, 2002
A new method is developed to calculate the scattering of light at the surface of a photonic crystal. The problem is solved in terms of virtual surface-current distributions and the calculation takes full advantage of the infinite-space plane-wave expansion method for obtaining the photonic band structure.
Jasper Knoester, Bernhard J. Hoenders, Marcel Doosje   +2 more
openaire   +4 more sources

Advances in Radiative Heat Transfer: Bridging Far‐Field Fundamentals and Emerging Near‐Field Innovations

Advanced Functional Materials, EarlyView.
This review synthesizes the evolution of radiative heat transfer, emphasizing the transition from far‐field to near‐field regimes. Traditional frameworks, such as Planck's law, are revisited alongside modern innovations like fluctuational electrodynamics. Applications span nanoscale thermal management, energy harvesting, and thermophotovoltaic systems.
Ambali Alade Odebowale, Andergachew Berhe, Rasheed T. Ogundare, Salah Abdo, Amer Abdulghani, Haroldo T. Hattori, Andrey E. Miroshnichenko   +6 more
wiley   +1 more source

Hybrid External Cavity Laser with an Amorphous Silicon-Based Photonic Crystal Cavity Mirror

Applied Sciences, 2019
The authors present results on the performance of a hybrid external cavity photonic crystal laser-comprising semiconductor optical amplifier, and a 2D photonic crystal cavity fabricated in low-temperature amorphous silicon.
Simone Iadanza, Chinna Devarapu, Alexandros Liles, Robert Sheehan, Liam O’Faoláin   +4 more
doaj   +1 more source

MXene 3D/4D Printing: Ink Formulation and Electrochemical Energy Storage Applications

Advanced Functional Materials, EarlyView.
A comprehensive study of MXene printing technique is presented, focusing on MXene ink formulation, surface chemistry, rheological characteristics, physical storage, and ink stability. Different printing techniques, such as 3D/4D printing, screen printing, inkjet printing, and continuous liquid interface production printing along with their applications
Shaista Nouseen, Martin Pumera
wiley   +1 more source

Extrinsic photonic crystals [PDF]

arXiv, 2005
Doped semiconductors are intrinsically homogeneous media. However, by applying an external magnetic field that has a spatially periodic variation, doped semiconductors can behave extrinsically like conventional photonic crystals. We show this possibility theoretically by calculating the photonic band structures of a doped semiconductor under an ...
arxiv