TY  - JOUR
A1  - Reinhold, Beate
A1  - Geue, Thomas
A1  - Huber, Patrick
A1  - Sant, Tushar
A1  - Pietsch, Ullrich
A1  - Sztucki, Michael
T1  - In situ and ex situ SAXS investigation of colloidal sedimentation onto laterally patterned support
N2  - We report on in situ investigations of colloidal ordering during gravity sedimentation from a colloidal suspension onto a prepatterned support using a polymeric surface relief grating (SRG) as the support. The ordering of colloids with a diameter of 420 nm was investigated by means of grazing-incidence small-angle X-ray scattering (GISAXS) and transmission SAXS using a preparation cell guaranteeing stable temperature and humidity. GISAXS was used for in situ monitoring of the time evolution of colloidal ordering within the whole illuminated sample area. The onset of ordering was indicated by the increase of integrated intensity within a small time frame shortly before complete evaporation of the dispersant. Single domains of coated samples were investigated ex situ by SAXS in transmission geometry where the irradiated sample area was 200 x 200 mu m(2) only. Domains with the typical size of a few millimeters were observed varying in orientation and crystallographic structure for various positions at the sample. They were mainly oriented along the grooves of the grating, confirming the influence of the underlying grating on colloidal ordering.
Y1  - 2009
UR  - http://pubs.acs.org/journal/langd5
U6  - https://doi.org/10.1021/La803078b
SN  - 0743-7463
ER  -