1. Department of Cariology, Restorative Sciences, and Endodontics (CRSE), School of Dentistry, University of Michigan, Ann Arbor, MI 48104, USA
2. Lurie Nanofabrication Facility, Department of Electrical, Engineering and Computer Sciences (EECS), University of Michigan, Ann Arbor, MI 48104, USA
3. Center for Consulting for Statistics, Computing and Analytics Research (CSCAR), University of Michigan, Ann Arbor, MI 48104, USA