Laser-Induced Nondestructive Patterning of a Thin Ferroelectric Polymer Film with Controlled Crystals using Ge8Sb2Te11 Alloy Layer for Nonvolatile Memory

Abstract

(H) Patterning using protein solutions results in the immobilization of protein on/in the films and a corresponding change in wettability from superhydrophobic to very hydrophilic in the patterned region; adjacent regions of the film that were not treated with aqueous solutions remain superhydrophobic. ... The methods reported here can be used to pattern more complex hydrophilic features, such as networks of channels and junctions useful for the guided transport of water, on superhydrophobic backgrounds using other contact-transfer methods (including contact with cotton thread or shaped patterns of filter paper soaked in protein solutions). ... The work reported here introduces nondestructive methods to create such surfaces using (i) functional materials (proteins and enzymes) that could expand the scope and utility of superhydrophobic materials in these applications and (ii) benign and convenient processing conditions (aqueous solutions and contact printing) that are otherwise challenging to employ in this context