The National Science Foundation awarded a $301,629 Project Grant to the University of Texas at Austin under the Engineering program (CFDA 47.041) to implement topologically protected gigahertz acoustic circuits. The award will support research collaborations between the University of Texas at Austin and the University of Texas System to realize acoustic devices with lower propagation loss than traditionally engineered circuits operating in the gigahertz regime. Key products and services include the design of acoustic devices with nontrivial topology; simulation of acoustic transport in complex structures; fabrication of advanced microwave circuits; and nanoscale visualization of wave propagation on piezoelectric membranes. The research aims to draw from condensed matter physics to design topologically nontrivial phononic systems where acoustic waves can propagate without backscattering at gigahertz frequencies.