title: Flow-induced voltage generation over monolayer graphene in the presence of herringbone grooves.
abstract: While flow-induced voltage over a graphene layer has been reported, its origin remains unclear. In our previous study, we suggested different mechanisms for different experimental configurations: phonon dragging effect for the parallel alignment and an enhanced out-of-plane phonon mode for the perpendicular alignment (Appl. Phys. Lett. 102:063116, 2011). In order to further examine the origin of flow-induced voltage, we introduced a transverse flow component by integrating staggered herringbone grooves in the microchannel. We found that the flow-induced voltage decreased significantly in the presence of herringbone grooves in both parallel and perpendicular alignments. These results support our previous interpretation.
authors.forename: Seung Ho
authors.initials: SH
authors.lastname: Lee
authors.forename: Young Bok Abraham
authors.initials: YB
authors.lastname: Kang
authors.forename: Wonsuk
authors.initials: W
authors.lastname: Jung
authors.forename: Yousung
authors.initials: Y
authors.lastname: Jung
authors.affiliation: Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Republic of Korea. soohyun@kaist.ac.kr.
authors.forename: Soohyun
authors.initials: S
authors.lastname: Kim
authors.forename: Hongseok Moses
authors.initials: HM
authors.lastname: Noh