title: Behavior of double emulsions in a cross-type optical separation system.
abstract: The behavior of double emulsions in a cross-type optical particle separation system was studied for different combinations of refractive indices and different inner and outer layer radii. The radii and refractive indices of the double emulsions were easily adjusted by taking advantage of the coflowing geometry of a cross-type optical particle separation device. An analytical expression of the optical forces on a pair of concentric spheres was derived using the photon stream method in the ray optics regime. The predicted trajectories of the double emulsions by the optical force agreed well with the experimental data. This work has potential uses in cell separation by morphometry, drug delivery vehicle, and emulsion-based biomedical applications.
authors.affiliation: Department of Mechanical Engineering, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon, 305-701, Korea.
authors.forename: Kyung Heon
authors.initials: KH
authors.lastname: Lee
authors.forename: Sang Bok
authors.initials: SB
authors.lastname: Kim
authors.forename: Sang Youl
authors.initials: SY
authors.lastname: Yoon
authors.forename: Kang Soo
authors.initials: KS
authors.lastname: Lee
authors.forename: Jin Ho
authors.initials: JH
authors.lastname: Jung
authors.forename: Hyung Jin
authors.initials: HJ
authors.lastname: Sung