Methods for fabricating poly(methyl methacrylate) microchips using a novel two-stage embossing technique and solvent welding to form microchannels in microfluidic devices are presented. The hot embossing method involves a two-stage process to create the final microchip design. In its simplest form, a mold made of aluminum is fabricated using CNC machining to create the desired microchannel desi...

In this study, a benign process was used to successfully produce low density foam from poly(arylene ether sulfone) (PAES). Both carbon dioxide (CO2) and water as well as nitrogen and water were used as physical blowing agents in a one-step batch process. A large amount of blowing agents (up to 7.5%) was able to diffuse into the PAES resin in a 2-h saturation time. Utilizing water and CO2 as the...

The efficacy of RNA interference (RNAi)-based cancer gene therapy is limited by its unexpected side effects, thus necessitating a strategy to precisely trigger conditional gene knockdown. In this study, we engineered a novel photoactivatable RNAi system, named as polyetherimide-modified single-wall carbon nanotube (PEI-SWNT)/pHSP-shT, that enables optogenetic control of targeted gene suppressio...

Tailoring the properties of high-performance polymers through reinforcing will bring multifunctionality and expand their use in additive manufacturing (AM). However, machine material-based challenges exist, eventually resulting low-quality end products. When expensive are considered, it is still challenging to tailor print them for high-quality multifunctional structures. Here, polymer composit...

The present work deals with the transferability of Friction Riveting joining technology from laboratory equipment to adapted in-house, low-cost machinery. A G13 drilling machine was modified for requirements selected technique, and joints were performed using polyethermide plates AA2024 aluminum alloy rivets 6 mm diameter. This diameter not previously reported Riveting. produced mechanically te...