

FOLLOWUS
a.The State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200433, China
b.College of Energy Engineering and State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310003, China
c.Joint Research Centre on Medicine, Xiangshan Hospital of Wenzhou Medical University, Ningbo 315700, China
changhao.li@zju.edu.cn (C.H.L.)
lijf@fudan.edu.cn (J.F.L.)
Received:03 April 2026,
Accepted:19 May 2026,
Online First:24 July 2026,
Published:2026-06
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Cai, Z. H.; Li, C. H.; Li, J. F. From global to localized illumination: tunable photo-induced patterns in a ternary reaction-diffusion system. Chinese J. Polym. Sci. https://doi.org/10.1007/s10118-026-3753-z
Zhuo-Hang Cai, Chang-Hao Li, Jian-Feng Li. From Global to Localized Illumination: Tunable Photo-induced Patterns in a Ternary Reaction-diffusion System[J/OL]. Chinese Journal of Polymer Science, 2026, 441-11.
Cai, Z. H.; Li, C. H.; Li, J. F. From global to localized illumination: tunable photo-induced patterns in a ternary reaction-diffusion system. Chinese J. Polym. Sci. https://doi.org/10.1007/s10118-026-3753-z DOI:
Zhuo-Hang Cai, Chang-Hao Li, Jian-Feng Li. From Global to Localized Illumination: Tunable Photo-induced Patterns in a Ternary Reaction-diffusion System[J/OL]. Chinese Journal of Polymer Science, 2026, 441-11. DOI: 10.1007/s10118-026-3753-z.
Photo-induced reaction-diffusion systems provide a valuable theoretical framework for exploring nonequilibrium self-organization under external energy input. Most existing studies have focused on binary mixtures subjected to globally uniform driving
whereas realistic chemical and biological systems are typically multicomponent and experience strongly localized energy supply. In this work
we extend photo-induced reaction-diffusion models to a multicomponent setting and systematically investigate pattern formation in a minimal three-component system. By combining numerical simulations with linear stability analysis
we find illumination can induce periodic nonequilibrium structures
whose characteristic length scales can be tuned by the input energy density and intrinsic molecular energetic parameters. We further introduce localized illumination to capture the effects of spatially heterogeneous energy input. Under such conditions
a theoretical phase diagram for pattern formation is constructed
revealing distinct spatial morphologies
including dot patterns and target-like structures. In addition
we explicitly examine the nonnegativity of entropy production for both globally and locally illuminated systems. These results provide a unified and physically consistent framework for understanding photo-induced pattern formation in multicomponent nonequilibrium systems and are also applicable to photoexcitation-controlled supramolecular systems such as persulfurated-arene/block-copolymer assemblies.
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