Recent Results of IRAN-T1 Tokamak

Bio-inspired green surface functionalization of PMMA for multifunctional capacitors

“…[34][35][36][37] Poly(methyl methacrylate) (PMMA) is one of the hydrophobic polymer and its surface needs to be modified to obtain the desired surface properties for numerous applications. 32 Various surface modification techniques such as corona treatments, plasma exposure, and ion beam, gamma-ray, electron beam, UV, and laser irradiation are frequently used to improve wettability, sealability, printability, and adhesion properties of polymers as well as to enhance polymer resistance to mechanical failure. Among these techniques, plasma modification offers distinct advantages, making plasma treatments an ideal means of modifying polymer surface characteristics.…”

“…[28][29][30] PMMA exhibits excellent material properties such as exceptional mechanical strength, hardness, high rigidity, transparency, and good insulation properties. 31,32 However, some inherent properties of PMMA, such as hydrophobicity and relatively low dielectric constant compared to ceramics/fluoropolymers and other materials, restrict its applications in high-energy density capacitors. The hydrophobic surface of PMMA prevents adhesion to other substances, limiting its spectrum of applications.…”

Synthesis, characterization, and properties of petroleum-based methacrylate polymers derived from tricyclodecane for microelectronics and optoelectronics applications

“…The conventional petroleum-based endo-tricyclodecane, the hydrogenated product of endo-dicyclopentadiene(tricyclo[5.2.1.0 2,6 ]deca-3,8-diene) (DCPD), is a C5-cracking fraction extracted as a by-product of ethylene manufacture, with a high availability, low cost, and suitable reactivity [3]. The difference in reactivity between the norbornene and cyclopentene double bonds in DCPD allows preparation of derivatives that can be successfully used as intermediates for various syntheses, like alcohols, epoxides, and ketones of DCPD have attracted the researchers.…”

“…This is due to its unique properties, which include excellent transparency, a high elastic modulus, good mechanical strength, excellent dimensional stability, weather resistance, lightweight nature, ease of processing at low temperatures, and low cost. In addition, PMMA is also used as a dielectric material in organic thin film transistors (OTFTs) and organic field effect transistors (OFETs), exhibiting an excellent electric performance as a gate dielectric or buffer layer owing to its beneficial insulation properties, such as a low dielectric constant and low dielectric loss over a wide frequency range [3,4], characteristics that are also attractive in terms of application in the optoelectronic industry. Unfortunately, PMMA possesses an inherent brittleness, and its thermal stability is insufficient for uses that require a high temperature resistance, thus limiting its potential use and applications in more stressful situations.…”

Optical properties of Polyvinyl Alcohol Films doped with Fe

“…In recent year's great progress in understanding polymer surface phenomena and development in their theoretical aspects have been done. Forces occurring on polymer surfaces depend on the interaction between macromolecules, which are different inside the material and on the phase boundary [1]. Poly (vinyl alcohol) (PVA) is one of the most important polymeric materials as it has many applications in industry and is of relatively low cost [2].…”