title: Fabrication of a freestanding boron nitride single layer and its defect assignments.
abstract: A freestanding single layer of hexagonal boron nitride (h-BN) has been successfully fabricated by controlled energetic electron irradiation through a layer-by-layer sputtering process. We have successfully resolved atomic defects in h-BN with triangle shapes by means of an aberration corrected high-resolution transmission electron microscopy with exit-wave reconstruction. Boron monovacancies are found to be preferably formed and the dominating zigzag-type edges are proved to be nitrogen terminated.
authors.affiliation: Nanotube Research Center, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba 305-8565, Japan. chuanhong-jin@aist.go.jp
authors.forename: Chuanhong
authors.initials: C
authors.lastname: Jin
authors.forename: Fang
authors.initials: F
authors.lastname: Lin
authors.forename: Kazu
authors.initials: K
authors.lastname: Suenaga
authors.forename: Sumio
authors.initials: S
authors.lastname: Iijima