Séminaire Programme Gradué Chimie PSL

Thomas Palberg, Johannes-Gutenberg Universität

 

Writing is an ancient cultural technique, typically performed by leaving some trace in or on a solid surface. We here explore the possibilities of leaving well formed letters in a liquid medium. We employ micron sized particles suspended in water as ink and ion exchange resin beads gravitationally settled to a surface as pen. All dynamics of such systems are in the Low Reynolds number regime. Thus writing in water is an art affording skill and patience. We obtain lines or letters with high contrast and durability. Strategies for further developments are discussed shortly.

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