title: Subnanometer optical coherence tomographic vibrography.
abstract: The ability to quantify and visualize submicrometer-scale oscillatory motions of objects in three dimensions has a wide range of application in acoustics, materials sciences, and medical imaging. Here we demonstrate that volumetric snapshots of rapid periodic motion can be captured using optical coherence tomography (OCT) with subnanometer-scale motion sensitivity and microsecond-scale temporal resolution. This technique, termed OCT vibrography, was applied to generate time-resolved volumetric vibrographs of a miniature drum driven acoustically at several kilohertz.
authors.affiliation: Harvard Medical School and Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, Massachusetts 02114, USA.
authors.forename: Ernest W
authors.initials: EW
authors.lastname: Chang
authors.forename: James B
authors.initials: JB
authors.lastname: Kobler
authors.forename: Seok H
authors.initials: SH
authors.lastname: Yun
mesh_terms: D007091:Image Processing, Computer-Assisted; D007840:Latex; D009038:Motion; D036103:Nanotechnology / Q000379:methods*; D041623:Tomography, Optical Coherence / Q000379:methods*; D014732:Vibration
chemical_list: D007840:Latex