Tunable nano Peltier cooling device from geometric effects using a single graphene nanoribbon

作     者：Wan-Ju Li Dao-Xin Yao E. W. Carlson 

作者机构：Department of Physics Purdue University West Lafayette IN 47907 USA State Key Laboratory of Optoelectronic Materials and Technologies Sun Yat-Sen University Guangzhou 510275 China 

出 版 物：《Frontiers of physics》 (物理学前沿（英文版）)

年 卷 期：2014年第9卷第4期

页      面：472-476页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 082701[工学-核能科学与工程] 0827[工学-核科学与技术] 

基　　金：It is a pleasure to thank Y. Chen  E.- A. Kim  and Y. L. Loh for conversations. W. J. Li would like to thank Vinh Quang Diep and Seokmin Hong for many useful discussions. W. J. Li  D. X. Yao  and E. W. Carlson acknowledge support from Research Corporation for Science Advancement and NSF Grant No. DMR 11-06187. W. J. Li acknowledges support from the Purdue Research Foundation. D. X. Yao aeknowledgcs support from the National Basic Research Program of China (No. 2012CB821400)  the National Natural Science Foundation of China (Grant Nos. 11074310 and 11275279)  Research Fund for the Doctoral Program of Higher Education of China (20110171110026)  and NCET-11-0547. EWC thanks Ecole Superieure de Physique et de Chimie Industrielles (ESPCI) for hospitality 

主　　题：Peltier cooling device graphene nanoribbon superlattice structure grapheneelectronics cooling power Nonequilibrium Green's Function (NI3GE) 

摘      要：Based on the phenomenon of curvature-induced doping in graphene we propose a class of Peltier cooling devices, produced by geometrical effects, without gating. We show how a graphene nanorib- bon laid on an array of curved nano cylinders can be used to create a targeted and tunable cooling device. Using two different approaches, the Nonequilibrium Green＇s Function （NEGF） method and experimental inputs, we predict that the cooling kW/cm2, on par with the best known techniques power of such a device can approach the order of using standard superlattice structures. The structure proposed here helps pave the way toward designing graphene electronics which use geometry rather than gating to control devices.