Z
Zhifeng Ren
Researcher at Texas Center for Superconductivity
Publications - 726
Citations - 84970
Zhifeng Ren is an academic researcher from Texas Center for Superconductivity. The author has contributed to research in topics: Thermoelectric effect & Thermoelectric materials. The author has an hindex of 122, co-authored 695 publications receiving 71212 citations. Previous affiliations of Zhifeng Ren include Massachusetts Institute of Technology & University of Cincinnati.
Papers
More filters
Journal ArticleDOI
Advances in thermoelectrics
TL;DR: In this article, a thermoelectric generator is used to directly convert heat into electricity, which holds great promise for tackling the ever-increasing energy sustainability issue in the future.
Patent
Free-standing and aligned carbon nanotubes and synthesis thereof
TL;DR: In this paper, one or more highly-oriented, multi-walled carbon nanotubes are grown on an outer surface of a substrate initially disposed with a catalyst film or catalyst nano-dot by plasma enhanced hot filament chemical vapor deposition of a carbon source gas and a catalyst gas at temperatures between 300 °C and 3000 °C.
Journal ArticleDOI
Enhancement of thermoelectric figure-of-merit by resonant states of aluminium doping in lead selenide
Qinyong Zhang,Qinyong Zhang,Hui Wang,Weishu Liu,Hengzhi Wang,Bo Yu,Qian Zhang,Zhiting Tian,George Ni,Sangyeop Lee,Keivan Esfarjani,Gang Chen,Zhifeng Ren +12 more
TL;DR: By adding aluminium (Al) into lead selenide (PbSe), the authors successfully prepared n-type PbSe thermoelectric materials with a figure-of-merit (ZT) of 1.3 at 850 K.
Journal ArticleDOI
Heavy doping and band engineering by potassium to improve the thermoelectric figure of merit in p-type PbTe, PbSe, and PbTe(1-y)Se(y).
Qian Zhang,Feng Cao,Weishu Liu,Kevin Lukas,Bo Yu,Shuo Chen,Cyril Opeil,David Broido,Gang Chen,Zhifeng Ren +9 more
TL;DR: It was found that Se increases the doping concentration of K in PbTe as a result of the balance of electronegativity and also lowers the lattice thermal conductivity because of the increased number of point defects.
Journal ArticleDOI
Superplastic carbon nanotubes
Jian Yu Huang,Shuo Chen,Ziqiang Wang,Krzysztof Kempa,Y. M. Wang,S. H. Jo,Gang Chen,M. S. Dresselhaus,Zhifeng Ren +8 more
TL;DR: It is shown that, at high temperatures, individual single-walled carbon nanotubes can undergo superplastic deformation, becoming nearly 280% longer and 15 times narrower before breaking.