title: Airflow-aligned helical nanofilament (B4) phase in topographic confinement.
abstract: We investigated a controlled helical nanofilament (HNF: B4) phase under topographic confinement with airflow that can induce a shear force and temperature gradient on the sample. The resulting orientation and ordering of the B4 phase in this combinational effort was directly investigated using microscopy. The structural freedom of the complex B7 phase, which is a higher temperature phase than the B4 phase, can result in relatively complex microscopic arrangements of HNFs compared with the B4 phase generated from the simple layer structure of the B2 phase. This interesting chiral/polar nanofilament behaviour offers new opportunities for further exploration of the exotic physical properties of the B4 phase.
authors.affiliation: Graduate School of Nanoscience and Technology and KINC, KAIST, Daejeon 305-701, Republic of Korea.
authors.forename: Min-Jun
authors.initials: MJ
authors.lastname: Gim
authors.affiliation: Graduate School of Nanoscience and Technology and KINC, KAIST, Daejeon 305-701, Republic of Korea.
authors.forename: Hanim
authors.initials: H
authors.lastname: Kim
authors.affiliation: Department of Physics and Soft Materials Research Center, University of Colorado, Boulder, CO 80309, USA.|Institute of Process Equipment, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027, China.
authors.forename: Dong
authors.initials: D
authors.lastname: Chen
authors.affiliation: Department of Physics and Soft Materials Research Center, University of Colorado, Boulder, CO 80309, USA.
authors.forename: Yongqiang
authors.initials: Y
authors.lastname: Shen
authors.affiliation: Department of Physics and Soft Materials Research Center, University of Colorado, Boulder, CO 80309, USA.
authors.forename: Youngwoo
authors.initials: Y
authors.lastname: Yi
authors.affiliation: Department of Chemistry and Soft Materials Research Center, University of Colorado, Boulder, CO 80309, USA.
authors.forename: Eva
authors.initials: E
authors.lastname: Korblova
authors.affiliation: Department of Chemistry and Soft Materials Research Center, University of Colorado, Boulder, CO 80309, USA.
authors.forename: David M
authors.initials: DM
authors.lastname: Walba
authors.affiliation: Department of Physics and Soft Materials Research Center, University of Colorado, Boulder, CO 80309, USA.
authors.forename: Noel A
authors.initials: NA
authors.lastname: Clark
authors.affiliation: Graduate School of Nanoscience and Technology and KINC, KAIST, Daejeon 305-701, Republic of Korea.
authors.forename: Dong Ki
authors.initials: DK
authors.lastname: Yoon