1. School of Physics and Key Laboratory of MEMS of the Ministry of Education Southeast University Nanjing 211189 China
2. Institute of Materials Research and Engineering Agency for Science Technology and Research Singapore 138634 Singapore
3. NNU‐SULI Thermal Energy Research Center (NSTER) & Center for Quantum Transport and Thermal Energy Science (CQTES) School of Physics and Technology Nanjing Normal University Nanjing 210023 China
4. Department of Materials Science and Engineering Nanyang Technological University Technology and Research 50 Nanyang Avenue Singapore 639798 Singapore