TY - JOUR
T1 - Microwave Absorption & Radiation from Large Area Multilayer CVD Graphene
AU - Wu, Bian
AU - Tuncer, Hatice M.
AU - Katsounaros, Anestis
AU - Wu, Weiping
AU - Cole, Matthew
AU - Ying, Kai
AU - Zhang, Lianhong
AU - Milne, William I.
AU - Hao, Yang
PY - 2014/10/31
Y1 - 2014/10/31
N2 - Here we experimentally study the microwave absorption and near-field radiation behavior of monolayer and few-layer, large-area CVD graphene in the C and X bands. Artificial stacking of CVD graphene reduces the sheet resistance, as verified by non-contact microwave cavity measurements and four-probe DC resistivity. The multilayer stacked graphene exhibits increased absorption determined by the total sheet resistance. The underlying mechanism could enable us to apply nanoscale graphene sheets as optically transparent radar absorbers. Near-field radiation measurements show that our present few-layer graphene patches with sheet resistance more than 600 Ω/sq exhibit no distinctive microwave resonance and radiate less electromagnetic power with increasing layers; however, our theoretical prediction suggests that for samples to be practical as microwave antennas, doped multilayer graphene with sheet resistance less than 10 Ω/sq is required.
AB - Here we experimentally study the microwave absorption and near-field radiation behavior of monolayer and few-layer, large-area CVD graphene in the C and X bands. Artificial stacking of CVD graphene reduces the sheet resistance, as verified by non-contact microwave cavity measurements and four-probe DC resistivity. The multilayer stacked graphene exhibits increased absorption determined by the total sheet resistance. The underlying mechanism could enable us to apply nanoscale graphene sheets as optically transparent radar absorbers. Near-field radiation measurements show that our present few-layer graphene patches with sheet resistance more than 600 Ω/sq exhibit no distinctive microwave resonance and radiate less electromagnetic power with increasing layers; however, our theoretical prediction suggests that for samples to be practical as microwave antennas, doped multilayer graphene with sheet resistance less than 10 Ω/sq is required.
UR - http://www.scopus.com/inward/record.url?scp=84905666922&partnerID=8YFLogxK
UR - http://dx.doi.org/10.1016/j.carbon.2014.05.086
U2 - 10.1016/j.carbon.2014.05.086
DO - 10.1016/j.carbon.2014.05.086
M3 - Article
AN - SCOPUS:84905666922
SN - 0008-6223
VL - 77
SP - 814
EP - 822
JO - Carbon
JF - Carbon
ER -