Polymeric microsieves produced by phase separation micromolding

A high-flux isopore micro-fabricated membrane for effective concentration and recovering of waterborne pathogens

“…Recent developments in MEMS technology have provided novel techniques for controlling the detailed microstructure of membrane materials, allowing the fabrication of membranes with precise pore size and shape (Van Rijn 2004). In recent years, different methods have been proposed to create membranes with cylindrical pores like conventional/interference lithography and silicon etching technology (Kuiper et al 1998;Warkiani et al 2011a, b), nanoimprinting using alumina template (Yanagishita et al 2007), phase separation micromolding (Gironès et al 2006), and dissolving mold techniques (Chen et al 2010). Regardless of capability of these methods for fabrication of organic/inorganic microsieve with pore size down to hundred nanometers, some major impediments like complexity and cost of the fabrication process as well as difficulty for large-scale production are associated with these techniques (Van Rijn 2004).…”

Pt based catalytic coatings on poly(benzimidazole) micromonoliths for indoor quality control

“…This method of pattern transfer is used, among other techniques, by the microtransfer molding. Over the last decade, the phase separation micromolding technique has been extensively developed by Lammertink et al [17][18][19][20] to prepare a broad spectrum of polymeric microsieves (poly methyl methacrylate, polycarbonate, polystyrene, poly vinyl difluoride, polyimide, polylacticacid, polyaniline, etc...) with tunable porosity either with a hard mold [17][18][19] or a soft permeable elastomeric mold [20].…”

Fabrication of multi-layer polymeric micro-sieve having narrow slot pores with conventional ultraviolet-lithography and micro-fabrication techniques

“…The fabrication process allows enough flexibility to control the microfilter characteristics like pore size and density in order to have higher flow rate, lower clogging ratio, and better recovery rate. 8,9 In recent years, different methods have been proposed to create membranes with cylindrical pores like laser interference lithography and silicon micro machining technology, 8 aperture array lithography, 10 nanoimprinting using alumina template, 11 excimer laser, 12 phase separation micromolding, 13 and more recently dissolving mold technique. 14 However, some major a) Author to whom correspondence should be addressed.…”