A simple method for a chemical surface modification of poly(methyl methacrylate) (PMMA) microchips with amino-poly(ethyleneglycol) (PEG-NH(2)) by nucleophilic addition-elimination reaction was developed to improve the separation efficiency and analytical reproducibility in a microchip electrophoresis (MCE) analysis of biomolecules such as proteins and enantiomers. In our procedure, the PEG chai...

This paper explores a possible design for a CMOS compatible, athermal, optical waveguide. The design explored is a slot waveguide with light guided in the low index material. A design paradigm is proposed which shows the relationship between cross-sectional parameters and their impact on both the effective index of refraction and the thermo-optic coefficient of the device. Two materials choices...

The physicochemical properties of polymers can be modified by spatial configuration. Here, dielectric spectroscopy (DS) was employed to investigate the effect tacticity on glass-transition dynamics confined polymer films. We have also carried out relaxation studies at ambient and elevated pressure conditions. High-pressure measurements provide information sensitivity density changes, which help...

Abstract. The degradation of synthetic plastics in the environment proceeds through stages micro- and nanoparticles. Freshwater fungi fungus-like organisms are key decomposers organic material. most (including oomycetes) feed by osmotrophy, which involves release exoenzymes into to break down complex biological polymers, followed cellular uptake simplified monomers. This article aims cultivate ...

Abstract Sulfide‐based all‐solid‐state batteries (ASSBs) have attracted much attention owing to their superior safety and potentially high‐energy density. Nevertheless, sulfide‐based ASSBs suffer from limited performance in terms of cycle life rate capability, which is closely related interfacial degradation during cycling. Another weakness the absence manufacturing protocols. Having noted that...

Methods: Light-hardened poly-methyl-methacrylate, poly-hydroxyl-ethyl-methacrylate, and calcium hydroxide plus polyanhydride (PPCH+PA) composite graft), PPCH graft alone, PA graft alone, were compared to each other and to a no graft control group. All mandibular premolar teeth were extracted; a total of 48 implants were placed into sockets of the mesial roots in three minipigs. Crestal areas an...

Combining inkjet printing and atom-transfer radical polymerization (ATRP) provides a straightforward and versatile method for producing patterned polymer surfaces that may serve as platforms for a variety of applications. We report the use of drop-on-demand technology to print binary chemical gradients and simple patterns onto solid substrates and, by using surface-confined ATRP, amplify these ...

Two soft lithography based fabrication techniques were employed for fabricating mechanically independent, freely suspended polymer microstructure from poly(n-propyl methacrylate) (PPMA) and poly(methyl methacrylate) (PMMA). Both methods involve a micromolding process followed by thermal bonding to the substrate. The first method, sacrificial layer micromolding, uses a water-soluble sacrificial ...

Despite its widespread application in the fields of ophthalmology, orthopedics, and dentistry and the stringent need for polymer packagings that induce in vivo tissue integration, the full potential of poly(methyl methacrylate) (PMMA) and its derivatives as medical device packaging material has not been explored yet. We therefore elaborated on the development of a universal coating for methacry...

The fabrication of nanocomposites containing magnetic nanoparticles is gaining interest as a model for application in small electronic devices. self-assembly block copolymers (BCPs) makes these materials ideal use soft matrix to support the structural ordering nanoparticles. In this work, high-molecular-weight polystyrene-b-poly(methyl methacrylate) copolymer (PS-b-PMMA) was synthesized through...