Exploring the self-assembly behavior of polystyrene microspheres in ripple structures

IF 2.2 4区化学 Q3 CHEMISTRY, PHYSICAL

Colloid and Polymer Science Pub Date : 2024-12-04 DOI:10.1007/s00396-024-05358-4

Chung-Ting Wu, Li-Teng Chen, Ting-Chun Ko, Chan-Cheng Hsu, C. B. Lin

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Abstract

To overcome the optical diffraction limit, combining micro-sized transparent spheres with photonic nanojet technology is able to achieve nanometer-level high-resolution imaging. To expand the imaging area, it is necessary to create a two-dimensional microsphere array. This paper presents a self-assembly method for fabricating two-dimensional transparent polystyrene microsphere arrays. The method uses radio frequency sputtering to deposit a low-friction graphite coating on the surface of a cured epoxy resin with a rippled structure. The wavelength of this rippled structure is slightly larger than the diameter of the polystyrene microspheres, allowing adjacent polystyrene microspheres in the one-dimensional array to make close contact. The amplitude of the rippled structure effectively prevents the polystyrene microspheres from flipping over. Next, 5 × 10^-6 wt% of polystyrene microspheres are uniformly dispersed in 100 mL of a cosolvent consisting of ethylene glycol and deionized water in an 8:2 weight ratio, and the colloidal solution is heated to 100 °C before being dropped onto the graphite-coated surface with the rippled structure. After the solvent evaporates, a single-layer, ordered arrangement of polystyrene microspheres can form.

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来源期刊

Colloid and Polymer Science 化学-高分子科学

CiteScore

4.60

自引率

4.20%

发文量

111

审稿时长

2.2 months

期刊介绍： Colloid and Polymer Science - a leading international journal of longstanding tradition - is devoted to colloid and polymer science and its interdisciplinary interactions. As such, it responds to a demand which has lost none of its actuality as revealed in the trends of contemporary materials science.