Self-organization of ZnO wrinkles oriented by patterned PMMA templates

Wrinkles with a well-ordered checkerboard pattern, created using dip-coating of poly(methyl methacrylate) on a UV–ozone-treated poly(dimethylsiloxane) substrate

“…19 Although the underlying soft substrate is often a poly(dimethylsiloxane) (PDMS) elastomer, the stiff thin top layer is made from various materials, including metals (e.g., gold, 1 platinum, 20 and aluminium 21 ) deposited using evaporation or sputtering, polystyrene spin-coated from its toluene solution, 22 polyacrylate derived from plasma polymerization, 23 and zinc oxide prepared using spin-coating of a precursor followed by sol-gel reaction. 24 The stiff thin layer can also be obtained by oxidizing the surface of PDMS in order to form a silicate layer using oxygen plasma, 5 UV-ozone (UVO) treatment, 17,25 and ion beams. 26 Cross-linking reactions induced by UV-ozone treatment 11 and chemical oxidization 27 can also stiffen the PDMS surface.…”

The Effect of PMMA Layer to the UV Properties of ZnO/PMMA Nanocomposite

“…Zinc oxide (ZnO) is an attractive semiconducting materials due to its physical and chemical properties [1]. ZnO has wide band gap (3.37 eV) and high exciton binding energy (60 MeV) and it shows potential application in catalysis, optoelectronic devices, sensors [2], and photovoltaic [3]. It a large energy band gap and has an optical band gap in the UV region making is extremely effectively as an UV absorber [1,4].…”