Chicago Tribune (June 26) -- Brett Walker’s research on conductive silver ink with Jennifer Lewis, his University of Illinois PhD advisor at the time, sparked enough interest from commercial electronics companies to start a business in Champaign. But the company didn’t really take off until they developed their Circuit Scribe pen, designed for makers, students, artists and others to draw functioning circuits — and for which the company raised $674,425 in a Kickstarter campaign late last year.