yuan4dMISSION. 4D Bio 3 Center promotes the development and application of advanced biotechnologies and services within the DoD to enhance the readiness, health, and well-being of America's Warfhters, veterans, and familiesDuring the past few years, some review papers give comprehensive summary of the advances in 4D printing from different viewpoints including printing material [3, 4, 8, 10],