title: Characterizing and tracking single colloidal particles with video holographic microscopy.
abstract: We use digital holographic microscopy and Mie scattering theory to simultaneously characterize and track individual colloidal particles. Each holographic snapshot provides enough information to measure a colloidal sphere's radius and refractive index to within 1%, and simultaneously to measure its three-dimensional position with nanometer in-plane precision and 10 nanometer axial resolution.
authors: Department of Physics and Center for Soft Matter Research, New York University, New York, NY 10003, USA.
authors: Sang-Hyuk
authors: SH
authors: Lee
authors: Yohai
authors: Y
authors: Roichman
authors: Gi-Ra
authors: GR
authors: Yi
authors: Shin-Hyun
authors: SH
authors: Kim
authors: Seung-Man
authors: SM
authors: Yang
authors: Alfons
authors: A
authors: van Blaaderen
authors: Peter
authors: P
authors: van Oostrum
authors: David G
authors: DG
authors: Grier
mesh_terms: D000465:Algorithms; D003102:Colloids / Q000032:analysis* / Q000737:chemistry*; D006696:Holography / Q000379:methods*; D021621:Imaging, Three-Dimensional / Q000379:methods*; D044085:Microfluidics / Q000379:methods*; D018715:Microscopy, Video / Q000379:methods*; D010316:Particle Size; D012031:Refractometry / Q000379:methods*
chemical_list: D003102:Colloids