The UW-Madison engineers use a solution process to deposit aligned arrays of CNTs onto 1-in. square substrates. The researchers used their scalable and rapid deposition process to coat the entire surface of this substrate with aligned carbon nanotubes in less than five minutes. The team's breakthrough could pave the way for CNT transistors to replace Sitransistors, particularly in wireless communications technologies. Photo credit: Stephanie Precourt, UW-Madison College of Engineering.