caa a22 4500 605489459 CHVBK 20210128100500.0 cr unu---uuuuu 210128e20151101xx s 000 0 eng 10.1134/S1061933X15060095 doi (NATIONALLICENCE)springer-10.1134/S1061933X15060095 Synchrotron radiation phase-contrast computed tomography study on self-assembly of polystyrene colloidal crystals via solvent evaporation [Elektronische Daten] [Yanan Fu, Honglan Xie, Biao Deng, Guohao Du, Tiqiao Xiao] The colloidal crystals of polystyrene (PS) spheres were assembled from the emulsion of PS by an in situ solvent evaporation method. The local internal 3D structure of the fabricated colloidal crystals was noninvasively characterized with synchrotron radiation phase-contrast computed tomography. The satisfactory contrast difference was obtained and the shapes of the spheres were clearly reconstructed. Based on the slice images, the two-stage mechanism of crystallization process for in situ evaporation was suggested. In the initial stage, stable nucleation and growth result in formation of an ordered face-centered cubic structure with the sphere volume fraction 70.2%, which is very close to the maximum sphere packing volume fraction 74%. In the second stage, the sphere concentration in suspension decreased too much to support an adequate sphere transfer through the solvent flux to the growth front. The transformation from square to hexagonal lattice did not therefore complete under the same evaporation rate. This incompleteness results in formation of local ordered structure with randomly arranged hexagonal and square packing with a slightly low volume fraction of 68.41%. Pleiades Publishing, Ltd., 2015 Fu Yanan Shanghai Institute of Applied Physics, Chinese Academy of Science, 201204, Shanghai, China aut Xie Honglan Shanghai Institute of Applied Physics, Chinese Academy of Science, 201204, Shanghai, China aut Deng Biao Shanghai Institute of Applied Physics, Chinese Academy of Science, 201204, Shanghai, China aut Du Guohao Shanghai Institute of Applied Physics, Chinese Academy of Science, 201204, Shanghai, China aut Xiao Tiqiao Shanghai Institute of Applied Physics, Chinese Academy of Science, 201204, Shanghai, China aut Colloid Journal Pleiades Publishing 77/6(2015-11-01), 795-801 1061-933X 77:6<795 2015 77 10595 https://doi.org/10.1134/S1061933X15060095 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1134/S1061933X15060095 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Fu Yanan Shanghai Institute of Applied Physics, Chinese Academy of Science, 201204, Shanghai, China aut NATIONALLICENCE 700 1- Xie Honglan Shanghai Institute of Applied Physics, Chinese Academy of Science, 201204, Shanghai, China aut NATIONALLICENCE 700 1- Deng Biao Shanghai Institute of Applied Physics, Chinese Academy of Science, 201204, Shanghai, China aut NATIONALLICENCE 700 1- Du Guohao Shanghai Institute of Applied Physics, Chinese Academy of Science, 201204, Shanghai, China aut NATIONALLICENCE 700 1- Xiao Tiqiao Shanghai Institute of Applied Physics, Chinese Academy of Science, 201204, Shanghai, China aut NATIONALLICENCE 773 0- Colloid Journal Pleiades Publishing 77/6(2015-11-01), 795-801 1061-933X 77:6<795 2015 77 10595