Results 21 to 30 of about 417,443 (317)

Aging effect on the structure and optical properties of nano Cu2S films

open access: yesResults in Physics, 2017
The amorphous nature is the dominant state of the as deposited Cu2S films. Films were aged for 3, 6 and 12 months. The aged films of 12 months are poly crystalline within nano scale.
H.A. Alburaih, A. El-Denglawey
doaj   +1 more source

How Fast Is Your Body Motion? Determining a Sufficient Frame Rate for an Optical Motion Tracking System Using Passive Markers. [PDF]

open access: yesPLoS ONE, 2016
This paper addresses how to determine a sufficient frame (sampling) rate for an optical motion tracking system using passive reflective markers. When using passive markers for the optical motion tracking, avoiding identity confusion between the markers ...
Min-Ho Song, Rolf Inge Godøy
doaj   +1 more source

Induction of Photodegradation of Poly(vinyl alcohol) Using a Cobalt Binary Mixed Ligand Complex [PDF]

open access: yesمجلة جامعة الانبار للعلوم الصرفة, 2023
The present study included optical degradation of pure polyvinyl films and also when mixing the complex [Aqua diphylcarbazide thiourea Cobalt (||)]chloride by weight (0.1% - 0.00625 %) and polymer films dissolved in water and thickness (60±5) microns ...
yasmeen al-mhmdy   +2 more
doaj   +1 more source

A detailed analysis of the optical beam deflection technique for use in atomic force microscopy [PDF]

open access: yes, 1992
A Michelson interferometer and an optical beam deflection configuration (both shot noise and diffraction limited) are compared for application in an atomic force microscope.
Jan Greve   +7 more
core   +1 more source

Optical properties for prepared polyaniline / Ferro fluid nano composites

open access: yesIraqi Journal of Physics, 2019
Pure nano Ferro fluid was synthesized by chemical co-precipitation method. The composite of polyaniline with nano sized Ferro fluid was prepared by In-situ–chemical oxidation polymerization method with ammonium per sulphate as an oxidant in aqueous ...
Salma M. Hassan
doaj   +1 more source

Optical properties of polymer composite PS-PC [PDF]

open access: yesKirkuk Journal of Science, 2010
The optical properties of polymer composite polycarbonate-polystyrene (PC-PS) films prepared by casting technique were studied in the visible and ultraviolent wavelength regions.
Dana A. Tahir
doaj   +1 more source

Effects of Assuming Constant Optical Scattering on Haemoglobin Concentration Measurements Using NIRS during a Valsalva Manoeuvre

open access: yes, 2011
Resolving for changes in concentration of tissue chromophores in the human adult brain with near-infrared spectroscopy has generally been based on the assumption that optical scattering and pathlength remain constant.
Cooper, CE   +20 more
core   +1 more source

Optical trapping with a perfect vortex beam

open access: yes, 2014
The authors would like to thank the UK Engineering and Physical Sciences Research Council (EPSRC) for funding.Vortex beams with different topological charge usually have different profiles and radii of peak intensity.
Arita, Yoshihiko   +9 more
core   +1 more source

Optical manifestations of domains with constant topological charge density

open access: yesPhysical Review Research, 2019
Domains of finite topological charge density can exist in chiral materials and chiral matter. Spatial and temporal variation of the average topological charge density, represented by the θ field, induces anomalous currents that are responsible for the ...
Evan Stewart, Kirill Tuchin
doaj   +1 more source

Optical properties for prepared polyvinyl alcohol/ polyaniline/ ZnO nanocomposites

open access: yesIraqi Journal of Physics, 2018
The optical energy gap and optical constants such as the reflective index, dielectric constant have been evaluated due to The optical transmission and UV-VIS absorption spectra have been recorded in the wavelength (200 - 1100 nm) for PVA/PANI polymer ...
Salma Mohamed H.
doaj   +1 more source

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