1. Department of Chemical and Materials Engineering; Chang Gung University; Taoyuan 33302 Taiwan
2. Centre for Reliability Science and Technologies; Chang Gung University; Taoyuan 33302 Taiwan
3. Division of Neonatology, Department of Pediatrics; Chang Gung Memorial Hospital, Linkuo; Taoyuan 33305 Taiwan
4. Department of Materials Science and Engineering; National Taiwan University; Taipei 10617 Taiwan