Optical constants of highly stretch-oriented poly(p-phenylene-vinylene): A joint experimental and theoretical study

2000 ◽  
Vol 62 (15) ◽  
pp. 10173-10184 ◽  
Author(s):  
D. Comoretto ◽  
G. Dellepiane ◽  
F. Marabelli ◽  
J. Cornil ◽  
D. A. dos Santos ◽  
...  
Keyword(s):  
Optical Constants ◽  
Theoretical Study ◽  
Phenylene Vinylene

scholarly journals Inversion of light-scattering measurements for particle size and optical constants: theoretical study

1994 ◽  
Vol 33 (18) ◽  
pp. 4025 ◽  
Author(s):  
Matthew R. Jones ◽  
Bill P. Curry ◽  
M. Quinn Brewster ◽  
Keng H. Leong
Keyword(s):  
Particle Size ◽  
Light Scattering ◽  
Optical Constants ◽  
Theoretical Study ◽  
Scattering Measurements

A theoretical study on photoexcitations in poly(p-phenylene vinylene)

2009 ◽  
Vol 10 (8) ◽  
pp. 1601-1605 ◽  
Author(s):  
Kun Gao ◽  
Shijie Xie ◽  
Sun Yin ◽  
Yuan Li ◽  
Desheng Liu ◽  
...  
Keyword(s):  
Theoretical Study ◽  
Phenylene Vinylene

Theoretical study of the vibrational spectra in poly(p-phenylene vinylene)

1990 ◽  
Vol 41 (15) ◽  
pp. 10744-10746 ◽  
Author(s):  
Dejan Raković ◽  
Radmila Kostić ◽  
L. A. Gribov ◽  
I. E. Davidova
Keyword(s):  
Vibrational Spectra ◽  
Theoretical Study ◽  
Phenylene Vinylene

scholarly journals Thermochromic and opacity behaviors in vanadium dioxide nanofilms: a theoretical study

2021 ◽  
Author(s):  
Ikhlas Hameem Shallal ◽  
Nidhal Moosa Abdul-Ameer ◽  
Shaimaa Qassim Abdul-Hasan ◽  
Moafak cadhem Abdulrida
Keyword(s):  
Vanadium Dioxide ◽  
Optical Constants ◽  
Theoretical Study ◽  
Visible Region ◽  
Infrared Region ◽  
Metal Phase ◽  
Ultraviolet Region ◽  
Smart Windows ◽  
Insulating Phase ◽  
Three Phases

Abstract Vanadium dioxide nanofilms are one of the most essential materials in electronic applications like smart windows. Therefore, studying and understanding the optical properties of such films is crucial to modifying the parameters that control these properties. To this end, this work focuses on investigating the opacity as a function of the energy directed at the nanofilms with different thicknesses (1 – 100) nm. Effective mediator theories (EMTs), which are considered as the application of Bruggeman's formalism and the Looyenga mixing rule, have been used to estimate the dielectric constant of VO2 nanofilms. The results show different opacity behaviors at different wavelength ranges (ultraviolet, visible, and infrared). The results depict that the highest opacity of the insulating phase is achieved at the ultraviolet region and it reduces for the metal phase. Besides, the results demonstrate that the opacity possesses a redshift during the changes at the three phases. Regarding the infrared region, the lowest opacity value is achieved at the insulator phase and it increases to the highest value at the metal phase. In the visible region, the opacity behavior remains similar in the three phases. It is worth noting that the lowest opacity is found for thinner nanofilm. Since both the refractive index and the extinction index are among the most essential optical constants, hence, both of them were compared with the experiment results, and an excellent agreement is achieved between them.

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