Micron-scale printer paths were designed using AutoCAD software. The atomizer and sheath flow pressures were allowed to stabilize before printing. All patterns were printed at room temperature using a 150 μm diameter nozzle at a print speed of 2 mm/s. The sheath flow rate was maintained between 20-25 SCCM, the atomizer flow rate between 20-28 SCCM, and the applied ultrasonic inducer current was set at 500 mA.