title: Characterization of chiral mesoporous materials by transmission electron microscopy.
abstract: By using transmission electron microscopy (TEM), the chirality of novel mesoporous materials has been studied. In addition, a computer simulation that uses a simple structural model was employed. The existence of chiral channels inside a tubelike material was confirmed by the observation of fringes along the length of the tubes. The chiral pitch of the channels was measured from the intermittent period, the chirality (right- or left-handed) was determined from the tilt direction of a tube compared with the direction of incident electrons and the curvature direction of the curved intermitted fringes as viewed in the TEM images.
authors.affiliation: Structural Chemistry, Arrhenius Laboratory, Stockholm University, 10961 Stockholm, Sweden. ohsuna@struc.su.se
authors.forename: Tetsu
authors.initials: T
authors.lastname: Ohsuna
authors.forename: Zheng
authors.initials: Z
authors.lastname: Liu
authors.forename: Shunai
authors.initials: S
authors.lastname: Che
authors.forename: Osamu
authors.initials: O
authors.lastname: Terasaki
mesh_terms: D000042:Absorption; D001698:Biomedical Engineering; D003198:Computer Simulation; D003460:Crystallization; D004581:Electronics; D005583:Fourier Analysis; D007700:Kinetics; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission / Q000379:methods*; D015233:Models, Statistical; D053758:Nanoparticles / Q000737:chemistry*; D036103:Nanotechnology / Q000379:methods; D012822:Silicon Dioxide / Q000737:chemistry*
chemical_list: D012822:Silicon Dioxide