Synthesis of rough colloidal SU-8 rods and bananas via nanoprecipitation
| Autor: | Roel P. A. Dullens, Jeffrey S. Urbach, Carla Fernández-Rico |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
digestive oral and skin physiology 02 engineering and technology Surfaces and Interfaces 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Rod 0104 chemical sciences Colloid Chemical engineering Colloidal particle Electrochemistry Surface roughness General Materials Science SPHERES Anisotropic particles Wetting 0210 nano-technology Spectroscopy Asperity (materials science) |
| Zdroj: | Langmuir |
| Popis: | Surface roughness plays an important role in determining the mechanical properties, wettability, and self-assembly in colloidal systems. In this work, we develop a simple and fast method to produce rough colloidal SU-8 rods, bananas, and spheres, via the nanoprecipitation of SU-8 in water. During this process, SU-8 nanospheres are absorbed onto the surface of the colloidal SU-8 particles and then cross-linked using UV-light. The size of the spherical asperities and the asperity density are controlled by the concentration of SU-8 used during the nanoprecipitation reaction. Fluorescent labeling of the rough SU-8 colloidal particles allows for their confocal imaging, which demonstrates their stability at high packing fractions. With these newly developed rough particles, we provide a colloidal model system that allows for studies addressing the impact of surface roughness on materials composed of anisotropic particles. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|