Results 71 to 80 of about 78,934 (289)

Harnessing the Orientation of Columnar Discotic Liquid Crystals for Narrowband Blue Emission with Enhanced Out‐Coupling Efficiency Toward Improvement of SP‐OLEDs Performance

open access: yesAdvanced Functional Materials, EarlyView.
Solution‐processed OLEDs containing discotic liquid‐crystalline MR‐TADF emitters are reported. Supramolecular self‐assembly induces homeotropic columnar alignment, enforcing preferential horizontal orientation of the emitter transition dipole moment in spin‐coated films, which leads to an enhancement in the device light outcoupling efficiency while ...
Joydip De   +6 more
wiley   +1 more source

Nonlinear reflection ellipsmetry for an anisotropic uniaxial crystal then optical axis lies in the plane of incidence

open access: yesФизика волновых процессов и радиотехнические системы, 2013
A new method of ellipsometry was considered Nonlinear ellipsometry, allowing to determine nonlinear characteristic of a medium. Angular spectra of nonlinear reflection ellipsometry for uniaxial crystals such as Beta-Barium Borate, Lithium Niobate ...
N.A. Matveeva   +2 more
doaj  

The wave impedance of an atomically thin crystal

open access: yes, 2015
I propose an expression for the electromagnetic wave impedance of a two-dimensional atomic crystal, and I deduce the Fresnel coefficients in terms of this quantity.
Merano, Michele
core   +1 more source

Determination of refractive index and layer thickness of nm-thin films via ellipsometry.

open access: yesOptics Express, 2017
Ellipsometric measurements give information on two film properties with high precision, thickness and refractive index. In the simplest case, the substrate is covered with a single homogenous, transparent film. Yet, with ellipsometry, it is only possible
P. Nestler, C. Helm
semanticscholar   +1 more source

Bio‐Inspired Magnetically Tunable Structural Colors from Elliptical Self‐Assembled Block Copolymer Microparticles

open access: yesAdvanced Functional Materials, EarlyView.
Cephalopod‐inspired photonic microparticles with dynamic structural coloration are fabricated via confined self‐assembly of linear block copolymers into ellipsoids containing stacked lamellae. Embedded superparamagnetic nanoparticles enable rapid magnetic alignment, restoring vivid, angle‐dependent color.
Gianluca Mazzotta   +8 more
wiley   +1 more source

Organic LEDs Based on Bis(8-hydroxyquinoline) Zinc Derivatives with a Styryl Group

open access: yesMolecules, 2023
For the first time, organic light-emitting diodes (OLEDs) based on bis(8-hydroxyquinoline) zinc with a styryl group (ZnStq) dispersed in poly(N-vinylcarbazole) matrix (ZnStq_R:PVK, where R = H, Cl, OCH3) were fabricated.
Malgorzata Sypniewska   +9 more
doaj   +1 more source

Electron transport through rectifying self-assembled monolayer diodes on silicon: Fermi level pinning at the molecule-metal interface

open access: yes, 2006
We report the synthesis and characterization of molecular rectifying diodes on silicon using sequential grafting of self-assembled monolayers of alkyl chains bearing a pi group at their outer end (Si/sigma-pi/metal junctions).
Bouloussa, O.   +8 more
core   +4 more sources

Carbon Contacts to Proteins Enable Robust, Biocompatible Electronic Junctions with Near‐Activation‐less Conduction Down to 10 K

open access: yesAdvanced Functional Materials, EarlyView.
A robust solid‐state protein junction with a semi‐transparent eC/Au electrode allows photoexcitation of the bacterio‐rhodopsin, bR layer, to isomerize the bR retinal. The resulting photo‐response shows the protein is functional in the solid‐state junction.
Shailendra K. Saxena   +5 more
wiley   +1 more source

Vertical-Objective-Based Ellipsometric Microscope for Real-Time Observation of nm-Thick Lubricant Films

open access: yesTribology Online, 2012
The vertical-objective-based ellipsometric microscope (VEM) is expected to be a useful method for clarifying the lubrication phenomena that uses thin liquid lubricants, especially the lubricant for hard disk drives (HDDs). Although the feasibility of VEM
Liu Qingqing   +4 more
doaj   +1 more source

Intrinsic Stokes parameters for 3D and 2D polarization states [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2015
The second-order characterization of a three-dimensional (3D) state of polarization is provided either by the corresponding 3D coherency matrix or (equivalently) by the associated 3D Stokes parameters. The analysis of the polarization properties that are
Gil J. J.
doaj   +1 more source

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