| Autor: |
Yakovlev EV; Bauman Moscow State Technical University, 2nd Baumanskaya street 5, 105005, Moscow, Russia., Komarov KA; Bauman Moscow State Technical University, 2nd Baumanskaya street 5, 105005, Moscow, Russia., Zaytsev KI; Bauman Moscow State Technical University, 2nd Baumanskaya street 5, 105005, Moscow, Russia., Kryuchkov NP; Bauman Moscow State Technical University, 2nd Baumanskaya street 5, 105005, Moscow, Russia., Koshelev KI; Bauman Moscow State Technical University, 2nd Baumanskaya street 5, 105005, Moscow, Russia., Zotov AK; Bauman Moscow State Technical University, 2nd Baumanskaya street 5, 105005, Moscow, Russia., Shelestov DA; Bauman Moscow State Technical University, 2nd Baumanskaya street 5, 105005, Moscow, Russia., Tolstoguzov VL; Bauman Moscow State Technical University, 2nd Baumanskaya street 5, 105005, Moscow, Russia., Kurlov VN; Institute of Solid State Physics of Russian Academy of Sciences, Academician Osipyan street 2, 142432, Chernogolovka, Russia., Ivlev AV; Max-Planck-Institut für extraterrestrische Physik, Giessenbachstrasse 1, 85748, Garching, Germany., Yurchenko SO; Bauman Moscow State Technical University, 2nd Baumanskaya street 5, 105005, Moscow, Russia. st.yurchenko@mail.ru. |
| Abstrakt: |
Tunable interparticle interactions in colloidal suspensions are of great interest because of their fundamental and practical significance. In this paper we present a new experimental setup for self-assembly of colloidal particles in two-dimensional systems, where the interactions are controlled by external rotating electric fields. The maximal magnitude of the field in a suspension is 25 V/mm, the field homogeneity is better than 1% over the horizontal distance of 250 μm, and the rotation frequency is in the range of 40 Hz to 30 kHz. Based on numerical electrostatic calculations for the developed setup with eight planar electrodes, we found optimal experimental conditions and performed demonstration experiments with a suspension of 2.12 μm silica particles in water. Thanks to its technological flexibility, the setup is well suited for particle-resolved studies of fundamental generic phenomena occurring in classical liquids and solids, and therefore it should be of interest for a broad community of soft matter, photonics, and material science. |
