B. M. Alotaibi, A. Atta, M. Atta, E. Abdeltwab, M. Abdel-Hamid
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引用次数: 5
Abstract
In this study, Polyvinyl alcohol (PVA) films were irradiated with hydrogen beam of fluence 8x1017, 16x1017, and 24x1017 ions/cm2 using handmade cold beam ion source. The resulting changes in the structure characteristics and functional groups of irradiated PVA films were studied using XRD and FT-IR methods respectively. In addition, the optical band gaps and Urbach energies of untreated and irradiated PVA were calculated using Tauc’s equation. The tail is 1.29 eV for PVA, improved to 1.59 eV and 4.17 eV when PVA was exposed to 8x1017 and 24x1017 ions/cm2, respectively. Furthermore, the parameters including refractive index, extinction coefficient, conductivities, and permittivity for untreated and treated samples have been calculated. Furthermore, the dispersion characteristics of un-irradiated and treated films are evaluated. With increasing hydrogen fluence of 8x1017 to 24x1017 ions/cm2, the relaxation time is reduced from 2.75x10−14 sec to 0.045x10−14 sec. On the other hand, the optical susceptibility of pure and treated PVA has been calculated. The modification which induced in the optical characteristics of the irradiation films suggests these films to apply in a different uses like optoelectronics devices.
Surface InnovationsCHEMISTRY, PHYSICALMATERIALS SCIENCE, COAT-MATERIALS SCIENCE, COATINGS & FILMS
CiteScore
5.80
自引率
22.90%
发文量
66
期刊介绍:
The material innovations on surfaces, combined with understanding and manipulation of physics and chemistry of functional surfaces and coatings, have exploded in the past decade at an incredibly rapid pace.
Superhydrophobicity, superhydrophlicity, self-cleaning, self-healing, anti-fouling, anti-bacterial, etc., have become important fundamental topics of surface science research community driven by curiosity of physics, chemistry, and biology of interaction phenomenon at surfaces and their enormous potential in practical applications. Materials having controlled-functionality surfaces and coatings are important to the manufacturing of new products for environmental control, liquid manipulation, nanotechnological advances, biomedical engineering, pharmacy, biotechnology, and many others, and are part of the most promising technological innovations of the twenty-first century.