Surface-charge lithography for direct PDMS micro-patterning.
Direct patterning of PDMS films is achieved by modulating the wettability of polar dielectric substrates. Periodic array structures of microbumps can be madeup by functionalizing periodically poled lithium niobate crystals. The modulation of surface wettability is obtained through the spatial distribution of the surface electric charges generated by the pyroelectric effect under electrode-less configuration. An appropriate thermal treatment of the substrates assures both the wettability patterning and the fast cross-linking of the PDMS film.
Grilli
Simonetta
S
Istituto Nazionale di Ottica Applicata del CNR, Via Campi Flegrei 34, 80078 Pozzuoli (NA), Italy. simonetta.grilli@inoa.it
Vespini
Veronica
V
Ferraro
Pietro
P
D004129:Dimethylpolysiloxanes / Q000737:chemistry*; D008567:Membranes, Artificial; D009556:Niobium / Q000737:chemistry; D010087:Oxides / Q000737:chemistry; D010316:Particle Size; D013499:Surface Properties; D017155:Wettability
D004129:Dimethylpolysiloxanes; D008567:Membranes, Artificial; D010087:Oxides; D009556:Niobium; C091692:lithium niobate; C013830:baysilon