In this paper, we investigate the impact of modified SiO2 nanoparticles on mechanical properties Polymethyl methacrylate (PMMA) composites through a combination molecular dynamics simulation and experimentation. Our investigation focuses analyzing elastic modulus, bulk shear Cauchy ratio pure PMMA, PMMA/SiO2 composites, PMMA/modified over temperature range 200–400 K. results indicate that, as i...

Background: Opacification of ophthalmic devices has been previously reported in silicone scleral buckle, Molteno implant, and intraocular lens opacification. However, there is no report on polymethyl methacrylate (PMMA) intraocular lens (IOL) calcification. Objective: Report the clinical feature, histopathologic and spectrophotometer analysis of opacified three-piece PMMA IOL. Method: A 60-year...

We present a fast and reliable fabrication method of dense, periodic and high aspect ratio PMMA and metallic nanostructures. Biased lines are directly exposed by a 100 keV electron beam in thick layers of polymethyl-methacrylate (PMMA) resist to produce polymer mold which is later used to grow Au high aspect ratio structures by electroplating. Dense PMMA and Au nanostructures with aspect ratios...

DLC (diamond-like carbon) films were prepared on Ti/PMMA(polymethyl methacrylate) under the different bias; principal purpose of this study is to explore structural differences Ti/PMMA with and without conductive material, further clarify role Ti interlayer in influencing deposition mechanism. The results indicate that deposited material exhibit uniform structure mechanical hardness when bias v...

Device performance enhancement in quantum dot light-emitting diodes (QLEDs) is realized by adding a small amount of insulating polymer polymethyl methacrylate (PMMA) into the emitting layer. Pool-Frenkel effect observed through temperature-dependent current density-voltage experiments, indicating important role trap states, and addition PMMA helps to reduce Poole-Frenkel barrier hence depth. Re...

In this study, high energy conversion efficient dye-sensitized solar cells (DSSCs) were successfully fabricated by attaching a double anti-reflection (AR) layer, which is composed of a subwavelength moth-eye structured polymethyl methacrylate (PMMA) film and a polydimethylsiloxane (PDMS) film. An efficiency of up to 6.79% was achieved. The moth-eye structured PMMA film was fabricated by using a...

This study was conducted to evaluate the capacity of guiding bone regeneration of polyhydroxyethyl-polymethyl methacrylate (PHEMA-PMMA) membrane as a guided tissue regeneration membrane for bone defects. Two 8-mm diameter transosseous round defects were made at the parietal bone of 18 New Zealand White rabbits. Defects were covered with or without PHEMA-PMMA membrane. Radiological and histologi...

The expanded uncertainty of the measured Brillouin scattering shift frequencies is essential in assessing measurements parameters various materials. We describe general operation principles a light (BLS) spectrometer with high-power laser and scanning tandem Fabry–Pérot interferometer (TFPI) for material characterization. Various components have been analyzed BLS following Guide to Expression U...

The aim of this study was to optimize the preparation method polymethyl methacrylate (PMMA) denture base loaded with nano silver (NAg), more effectively and safely impart sustainable antibacterial functions. NAg solution synthetized mixed acrylic acid methyl methyacrylate (MMA) monomer in order prepare a new type (NS)/polymer specimens (NS/PMMA). surface morphology, mechanical strength, antimic...

The newly identified natural fabric from the tree of Sterculia urens was coated with Polymethyl methacrylate. The tensile properties of both the uncoated and Polymethyl methacrylate coated fabrics were studied. The tensile parameters such as maximum stress, Young’s modulus and % elongation at break were determined using a Universal Testing Machine. The effect of alkali treatment and the Polymet...