Piezoelectric inkjet printing of biomimetic inks for reactive surfaces.
Piezoelectric inkjet printing of biomimetic inks for reactive surfaces.
复制标题
用于反应性表面的仿生墨水的压电喷墨打印。
DOI：
10.1002/smll.200800536
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发表时间：
2008
期刊：
影响因子：
--
通讯作者：
Wright,DavidW
中科院分区：
文献类型：
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作者：
Deravi,LeilaF;Sumerel,JanL;Sewell,SarahL;Wright,DavidW
The intricacies involved in the formation of nanostructured cell walls of marine diatoms have been a source of inspiration for a generation of developmental biologists, chemists, and material scientists. It is understood that the biomineralization of these cell walls is initiated on the surface of an internal valve known as the silica deposition vesicle (SDV).[1–4] The SDV provides a localized environment where cell wall biogenesis is completed as silica condensation is catalyzed by long-chain polyamine moieties or cationic polyeptides.[1, 4] A number of biomimetic analogs to the silica precipitating peptides have been developed and characterized in vitro.[5–10] Although they are recognized as excellent examples of bioinspired templates for metal-oxide synthesis, these mimics have yet to successfully recapitulate spatial and supramolecular control on a twodimensional (2D) surface.Recent materials-deposition techniques, including solenoid jet printing, lithography and liftoff patterning, and direct ink write (DIW), have been used to immobilize a variety of silica precipitating precursors.[7, 11, 12] All methods provided a unique approach towards the advancement of controllable templating for patterned metal oxides; however, each was beset by their own limitations. These included large, nonuniform spots (solenoid jet printing), high temperature reaction conditions (lithography and liftoff), or inherently slow (40 mm sÀ1) patterning conditions (DIW), rendering them unfavorable for the rapid production of functional-material patterns under ambient conditions.[11, 12] For these reasons, we have employed piezoelectric inkjet printing with the Dimatix Materials Printer (DMP) as an alternative, rapid prototyping (8 ms À1) method of deposition for the 2D patterning of templated microstructured silica. The ffexibility associated with DMP deposition provided reproducible spot sizes and enabled tunable surface control specific for each reaction environment.
