The design and fabrication of anisotropic photonic crystal supraballs with multiple responses are highly desirable for versatile environmental sensing and flexible displaying. Herein, we developed an available strategy to construct a series of multi-responsive magnetic colloidal photonic crystal (CPC) supraballs with Janus and molecular-analogue structures. Initially, the humidity and temperature sensitive CPC supraballs were obtained via immobilization of polyacrylamide (PAM) and polyisopropylacrylamide (PNIPAM) hydrogels into the CPC structure, respectively, and CdTe/ZnS quantum dots endow the supraballs fluorescent signal under UV light. Furthermore, Fe₃O₄ nanoparticles (NPs) were served as a magnetic hemisphere to construct CPC Janus supraballs which can be subsequently assembled into three different molecular-shaped cluster particles that integrate more response types via Fe₃O₄ NPs hemisphere coalescence to a magnetic coupling center, recognizing multiple responses simultaneously that correspond the environmental altering. In addition, 2D polychromatic patterns with sensitive CPC pixels printed by automatic printing system were demonstrated, which could monitor the changes of temperature and humidity. The multi-responsive magnetic controlling supraballs and 2D patterns reveal the promising applications in environmental sensing, anti-counterfeiting and displaying.

具有多种响应的各向异性光子晶体超球的设计和制造对于多功能环境传感和柔性显示是非常需要的。在这里，我们开发了一种可用的策略来构建一系列具有Janus和分子类似物结构的多响应磁性胶体光子晶体（CPC）超球。最初，通过将聚丙烯酰胺（PAM）和聚异丙基丙烯酰胺（PNIPAM）水凝胶固定到CPC结构中来获得对湿度和温度敏感的CPC上球，并且CdTe / ZnS量子点在紫外线下赋予该上球荧光信号。此外，Fe ₃ O ₄纳米粒子（NPs）用作磁半球来构建CPC CPC Janus超球，随后可将其组装成三个不同的分子形簇状粒子，这些粒子通过Fe ₃ O ₄ NPs半球聚结到磁耦合中心整合更多的响应类型，从而识别出多个响应同时对应于环境的变化。此外，还演示了通过自动打印系统打印的具有敏感CPC像素的二维多色图案，该图案可以监视温度和湿度的变化。多响应磁控制超球和2D模式揭示了在环境传感，防伪和显示方面的有前途的应用。