English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Conference Paper

Colloidal crystal formation: nanodewetting and the assembly process

MPS-Authors
/persons/resource/persons58799

Marlow,  Frank
Research Group Marlow, Max-Planck-Institut für Kohlenforschung, Max Planck Society;
Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Germany;

External Resource
No external resources are shared
Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available
Citation

Marlow, F., & Muldarisnur, M. (2016). Colloidal crystal formation: nanodewetting and the assembly process. In In Proc. of SPIE 9885, Photonic Crystal Materials and Devices XII (pp. 98850S-1-98850S-7).


Cite as: https://hdl.handle.net/11858/00-001M-0000-002A-4A4D-3
Abstract
Self-assembly of colloidal particles is a promising approach for fabrication of three-dimensional periodic structures which are especially interesting for photonic crystals. This approach is simple and cheap, but it still suffers under the existence of many intrinsic defects. The efforts to improve the self-assembly process have led to many deposition methods with a different degree of controllability. One of the best fabrication techniques is the capillary deposition method leading to non-scattered photon propagation in the order of 80 μm. To improve understanding of the selfassembly process we investigate the stages of the process separately. The most important stage is likely the deposition of suspended particles into a dense arrangement forming a crystal. This is studied spectroscopically. Another crucial stage is the drying of colloidal crystal which is connected with a continuous shrinkage process. Several minutes after starting the drying, a surprise occurs: The system expands shortly before it shrinks monotonously until reaching its final state after about one day. We called this “v“-event because of the characteristic shape of the curve for the Bragg peak. The event is assigned to the start of a nano-dewetting process occurring at the colloidal particles. © (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE).