title: Dynamics of an optically bound structure made of particles of unequal sizes.
abstract: This theoretical study based on the coupled dipoles model focuses on the dynamics of two optically bound dielectric spheres of unequal sizes confined in counter-propagating incoherent Bessel beams. We analyzed the relative motion of the particles with respect to each other and defined conditions where they form a stable optically bound structure (OBS). We also investigated the motion of the center of mass of the OBS and found that its direction depends on the particle separation in the structure. Besides the optical interaction between objects, we also considered a hydrodynamic coupling in order to obtain more precise results for moving an OBS.
authors.forename: Vítězslav
authors.initials: V
authors.lastname: Karásek
authors.forename: Martin
authors.initials: M
authors.lastname: Šiler
authors.forename: Oto
authors.initials: O
authors.lastname: Brzobohatý
authors.forename: Pavel
authors.initials: P
authors.lastname: Zemánek