Results 11 to 20 of about 55,978 (270)

Optical properties of carbon nanofiber photonic crystals [PDF]

open access: yes, 2010
Carbon nanofibers (CNF) are used as components of planar photonic crystals. Square and rectangular lattices and random patterns of vertically aligned CNF were fabricated and their properties studied using ellipsometry.
A I Fernandez-Dominguez   +17 more
core   +3 more sources

Optical characterization of aminosilane-modified silicon dioxide surface for biosensing [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2013
Silicon dioxide surfaces, functionalized by two aminosilane compounds (3-amino-propyl-triethoxysilane, APTES; 3-amino-propyl-dimethyl-ethoxysilane, APDMES) both dissolved in different solvents (dry ethanol and toluene), have been investigated by standard
Terracciano M.   +3 more
doaj   +1 more source

Optical data of graphene grown by chemical vapor deposition on copper foil using spectroscopic ellipsometry

open access: yesData in Brief, 2022
Hexagonal, carbon-based structures were prepared on bare and treated copper foil substrates by Chemical Vapor Deposition at 1075 ᵒC using a graphite box for limiting copper reactivity with hydrocarbon gases during growth reactions.
Fahd Rajab
doaj   +1 more source

"Three-Color" Chemical Selectivity between Oxide, Nitride, and Silicon: Area-Selective Deposition of Metal Oxide and Polymer on SiN and Si-H versus SiO<sub>2</sub>. [PDF]

open access: yesAdv Mater Technol
Molybdenum hexafluoride as a pretreatment is able to create a chemical contrast between SiN and SiO2 surfaces via selective fluorine passivation of the oxide. One dose of MoF6 enabled 9.7 nm of selective deposited TiO2 on SiN versus SiO2 with selectivity >0.92 on a nanoscale SiN/SiO2 patterned surface.
Thelven JM   +6 more
europepmc   +2 more sources

Ellipsometric measurements by use of photon pairs generated by spontaneous parametric down-conversion [PDF]

open access: yes, 2001
We present a novel interferometric technique for performing ellipsometric measurements. This technique relies on the use of a non-classical optical source, namely, polarization-entangled twin photons generated by spontaneous parametric down-conversion ...
Abouraddy   +16 more
core   +3 more sources

Fundamentals and applications of spectroscopic ellipsometry

open access: yesQuímica Nova, 2002
This paper describes the use of ellipsometry as a precise and accurate technique for characterizing substrates and overlayers. A brief historical development of ellipsometry and the basic principles necessary to understand how an ellipsometer works are ...
Débora Gonçalves, Eugene A. Irene
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

Experimental and Theoretical Studies of the Optical Properties of the Schiff Bases and Their Materials Obtained from o-Phenylenediamine

open access: yesMolecules, 2022
Two macrocyclic Schiff bases derived from o-phenylenediamine and 2-hydroxy-5-methylisophthalaldehyde L1 or 2-hydroxy-5-tert-butyl-1,3-benzenedicarboxaldehyde L2, respectively, were obtained and characterized by X-ray crystallography and spectroscopy (UV ...
Magdalena Barwiolek   +7 more
doaj   +1 more source

Plasma Polymerized Organosilicon Thin Films for Volatile Organic Compound (VOC) Detection

open access: yesPlasma, 2023
Plasma polymerized (PP) thin films deposited in a soft or intermediate plasma discharge from hexamethyldisiloxane (HMDSO) were developed as sensors for the detection of volatile organic compound (VOC) vapors.
Ghadi Dakroub   +6 more
doaj   +1 more source

Argon irradiation effects on the structural and optical properties of reactively sputtered CrN films [PDF]

open access: yesScience of Sintering, 2015
The present study deals with CrN films irradiated at room temperature (RT) with 200 keV Ar+ ions. The CrN layers were deposited by d.c. reactive sputtering on Si (100) wafers, at nitrogen partial pressure of 5×10-4 mbar, to a total thickness of ...
Novaković M., Popović M., Bibić N.
doaj   +1 more source

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