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

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. U...

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Bibliographic Details
Published in:Frontiers of physics 2014-08, Vol.9 (4), p.472-476
Main Authors: Li, Wan-Ju, Yao, Dao-Xin, Carlson, E. W.
Format: Article
Language:English
Subjects:
Astronomy
Astrophysics and Cosmology
Atomic
Condensed Matter Physics
Control equipment
cooling power
Graphene
graphene electronics
graphene nanoribbon
Green's functions
Molecular
Nanoribbons
Nonequilibrium Green’s Function (NEGF)
Optical and Plasma Physics
Particle and Nuclear Physics
Peltier cooling device
Physics
Physics and Astronomy
Research Article
superlattice structure
Superlattices
冷却装置
几何效应
单层
可调谐
掺杂石墨
纳米带
超晶格结构
非平衡格林函数
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Summary: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.
ISSN:2095-0462
2095-0470
DOI:10.1007/s11467-014-0415-3