Bio and soft-imprinting lithography on bacterial cellulose films
نویسندگان
چکیده
Bacterial cellulose (BC) is a biocompatible polysaccharide produced by bacteria currently used in packaging, cosmetics, or health care. A highly attractive feature of BC the possibility patterning pellicle during its biosynthesis, concept coined as bio-lithography. BC-patterned films have demonstrated improved properties for cellular-guided growth, implant protection, wound dressing. However, aspects such diversity and size features patterned, how those withstand postprocessing steps, if large areas can be patterned remain unanswered. Gathering knowledge on these characteristics could extend use cellulose-based materials emerging fields transient devices, nanogenerators, microfluidics. Here, we show that bio-lithographed present good-quality micropatterned various motifs (wells, pillars, channels) wide range sizes (from 200 to 5 μm) 70 cm 2 . Besides, studied fidelity fiber organization wet, supercritical, oven-dried films. When wells pillars were x y dimensions faithfully replicated wet dried samples, but only supercritically afforded mold accuracy z-direction. In addition, x/z ratio should carefully considered obtaining self-standing pillars. Finally, compared bio-lithography soft-imprint lithography. latter case, alignment was not observed depth resulting dramatically decreased; however, this technique allowed us produce submicron after rewetting • been Bio-lithographed patterns oven drying. Patterned good quality 200-5 μm The motif's maintained fibers under drying conditions. Soft-imprint lithography affords facilitates an easy functionalization
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ژورنال
عنوان ژورنال: Materials Today Chemistry
سال: 2021
ISSN: ['2468-5194']
DOI: https://doi.org/10.1016/j.mtchem.2021.100535