1. Department
of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, United States
2. State
Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640 Guangdong, People’s Republic of China
3. Department
of Mechanical and Materials Engineering, University of Nebraska-Lincoln, Lincoln, Nebraska 68588, United States
4. Department
of Electrical Engineering, University of Maryland, College Park, Maryland 20742, United States
5. Department
of Mechanical Engineering, University of Maryland, College Park, Maryland 20742, United States