3Qs: Could circuits’ face-​​lift mean faster, smaller phones?

North­eastern asso­ciate pro­fessor of elec­trical and com­puter engi­neering Nian Sun has devel­oped a method for power effi­ciently tuning the induc­tors of inductor – capac­itor tank cir­cuits widely used in cell phones and other radio-​​frequency devices allowing a much large tun­able fre­quency range, a feat that has eluded sci­en­tists for decades.