Graphene synthesis via magnetic inductive heating of copper substrates.
Scaling graphene growth using an oven to heat large substrates becomes less energy efficient as system size is increased. We report a route to graphene synthesis in which radio frequency (RF) magnetic fields inductively heat metal foils, yielding graphene of quality comparable to or higher than that of current chemical vapor deposition techniques. RF induction heating allows for rapid temperature ramp up/down, with great potential for large scale and rapid manufacturing of graphene with much better energy efficiency. Back-gated field effect transistors on a SiO2/Si substrate showed carrier mobility up to ∼14 000 cm(2) V(-1) s(-1) measured under ambient conditions. Many advantages of RF heating are outlined, and some fundamental aspects of this approach are discussed.
Department of Mechanical Engineering and the Materials Science and Engineering Program, The University of Texas at Austin , 1 University Station C2200, Austin, Texas 78712, United States.
Richard
R
Piner
Huifeng
H
Li
Xianghua
X
Kong
Li
L
Tao
Iskandar N
IN
Kholmanov
Hengxing
H
Ji
Wi Hyoung
WH
Lee
Ji Won
JW
Suk
Jongpil
J
Ye
Yufeng
Y
Hao
Shanshan
S
Chen
Carl W
CW
Magnuson
Ariel F
AF
Ismach
Deji
D
Akinwande
Rodney S
RS
Ruoff
D003300:Copper / Q000737:chemistry*; D006108:Graphite / Q000138:chemical synthesis*; D006361:Heating / Q000379:methods*; D008422:Materials Testing; D053758:Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D011846:Radio Waves
D006108:Graphite; D003300:Copper