Browsing by Author "Orrison, Connor"

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    Electrochemical Erasing Using a Polymer Lithography Editor for the Fabrication of Photoactive Devices
    (ACS, 2019) Becerra-Mora, Nathalie; Vargas-Lizarazo, Annie Y.; Orrison, Connor; Barron, Monica; Balaraman, Rajesh P.; Kohli, Punit; Chemistry and Chemical Biology, School of Science
    Electrochemical erasing of conductive coatings at microscale for the fabrication of functional devices on flexible and hard surfaces is demonstrated. The nanoporous pyramidal-shaped nano- and microscale polyacrylamide hydrogel PLE probes allowed delivery of electrochemical etchants to the surface, providing on-demand maskless patterning at microscale. Highly efficient erasing (silver and copper metals erasing efficiency ≈ 100%), areal erasing rate ≈ 80 μm2/s, and pressure dependent spatial erasing feature dimensions between 3 μm to many tens of microns on metal surfaces allowed for the fabrication of microelectrodes of various geometries. Overall, PLE-based microscale erasing allowed for rapid and accessible fabrication of organic electron–hole carrier pair-based microphotodetector, as well as the assembly of LED on flexible and rigid ITO substrates.