Results 41 to 50 of about 31,024 (191)

1T‐to‐2H Phase Evolution During Epitaxial Growth of Transition Metal Dichalcogenides

open access: yesAdvanced Materials, EarlyView.
During MOCVD growth of MoS2 and WSe2, a transient metallic 1T phase emerges in early, edge‐rich, chalcogen‐deficient domains and declines as the films ultimately coalesce as 2H material. Together, experiments and ReaxFF simulations link domain size, edge stoichiometry, and vacancies to this evolution.
Andrew R. Graves   +8 more
wiley   +1 more source

Optical and AFM study of electrostatically assembled films of CdS and ZnS colloid nanoparticles.

open access: yes, 2008
CdS and ZnS semiconducting colloid nanoparticles coated with the organic shell, containing either SO3− or NH2+ groups, were prepared using the aqueous phase synthesis.
Suryajaya, S.   +10 more
core   +1 more source

Thickness‐Defined Transport Regime Toward Near‐Ideal Area‐Type Switching

open access: yesAdvanced Materials, EarlyView.
By thinning the oxide layer, memristors pass from diode‐like and battery‐effect‐dominated behavior toward eventual short‐circuit failure. Within the intermediate 5–6 nm window, they reach a near‐ideal analog area‐type switching regime, featuring symmetric hysteresis, area‐dependent conductance, and continuous linear programming of HRS and LRS with ...
Cuo Wu   +12 more
wiley   +1 more source

Optical Calibration of a Multi-Color Ellipsometric Mapping Tool Fabricated Using Cheap Parts

open access: yesPhotonics
We developed and applied a new calibration method to make more accurate measurements with our multi-color ellipsometric mapping tool made from cheap parts.
Berhane Nugusse Zereay   +6 more
doaj   +1 more source

Antibody‐Precomplexed Hemagglutinin Constructs Multivalently Bind Sialylated Glycan Receptors with Variable Valencies

open access: yesAdvanced Materials Interfaces, EarlyView.
Hemagglutinin precomplexation with antibodies (Abs) results in broad valency distributions, though it increases the total avidity from mM to nM to high nM. The valency distribution and the orientation of multivalent HA‐Ab complexes determine the extent of binding to different types of assays, whether the receptors are displayed in 2D or 3D.
Daniel Y. E. L. Tambuwun   +8 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  

Polarization- and Angular-Resolved Optical Response of Molecules on Anisotropic Plasmonic Nanostructures

open access: yesNanomaterials, 2018
A sometimes overlooked degree of freedom in the design of many spectroscopic (mainly Raman) experiments involve the choice of experimental geometry and polarization arrangement used.
Martin Šubr, Marek Procházka
doaj   +1 more source

Variable Angle Spectroscopic Ellipsometry Characterization of Graphene Oxide in Methanol Films

open access: yesCrystals, 2022
It has been widely established that solvents modify the functional groups on the graphene oxide (GO) basal plane and, thus, modify its reactivity. Despite the increasing interest in GO films, a less studied aspect is the influence of methanol on the ...
Grazia Giuseppina Politano   +1 more
doaj   +1 more source

Wafer‐Scale Top‐Down Patterning of Metal Halide Perovskites

open access: yesAdvanced Materials Technologies, EarlyView.
Wafer‐scale patterning of metal halide perovskite films is demonstrated on 150 mm substrates using a chemically amplified resist, polymethyl methacrylate (CAR‐PMMA) and a single reactive ion etching step. The streamlined process preserves film luminescence while defining submicrometer features across the full wafer, enabling dense, scalable integration
Federico Fabrizi   +7 more
wiley   +1 more source

Advanced Mueller Ellipsometry Instrumentation and Data Analysis.

open access: yes, 2013
The main object of this chapter is to give an overview the possibilities offered by instruments capable of measuring full Mueller matrices in the field of optical characterization.
Ossikovski, Razvigor   +5 more
core   +1 more source

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