With the continuous development of green materials and functional materials technology, structural color (Structural Color) has gradually become an important direction in the research of new generation optical materials. Different from traditional coloring methods that rely on chemical pigments or dyes, structural color is a color formed by the reflection, diffraction and interference of light by the micro-nanostructure inside the material. Therefore, it has the advantages of environmental protection, stability and controllability. In recent years, the natural bio-based material **Nanocellulose** has shown great application potential in the field of structural color materials due to its unique nanostructure and excellent self-assembly properties. 1. Basic principles of structural color Structural color is an optical phenomenon produced by the microstructure of materials. Its color comes from the interaction between light and periodic structures, rather than the color produced by the absorption spectrum of chemical pigments. Many creatures in nature use structural colors to create bright visual effects, such as butterfly wings

1. What is a thixotropic modifier? In industrial systems such as coatings, daily chemicals, pesticide suspensions, inks, and composite materials, thixotropic modifiers (Thixotropic Rheology Modifier) ​​are an important functional additive used to regulate the rheological properties of the system. Its main function is to adjust the viscosity of the system, prevent solid particles from settling, improve system stability, and improve construction or use performance. An ideal thixotropic system usually exhibits: high viscosity in a static state, reduced viscosity when subjected to shear, and rapid recovery of structure after shearing is stopped. This structural recovery ability directly determines the stability and user experience of the product. In recent years, with the increasing demand for green materials and sustainable development, nanocellulose (Nanocellulose) has gradually become a new high-performance thixotropic regulating material. 2. Structural advantages of nanocellulose Nanocellulose is prepared from natural cellulose through mechanical, chemical or biological methods.

In the wave of global 'double carbon' goals and iterative upgrades in material technology, nanocellulose, as a new functional material derived from nature and with excellent performance, is breaking the application boundaries of traditional materials by virtue of its unique physical and chemical properties and becoming a core force in promoting green transformation and technological innovation in various industries. As a company deeply involved in the field of new materials, we are deeply involved in the research and development and industrial application of nanocellulose, helping various industries achieve high-quality development and unlocking a new future in the field of materials. Nanocellulose (Nanocellulose) is a nanoscale functional material obtained from natural cellulose after mechanical, chemical or enzymatic processing. The fiber diameter is usually 5-50 nm. It has natural advantages such as high crystallinity, high aspect ratio, renewable and degradable. It is known as the 'super material in the green era'. Its core performance highlights are outstanding: the strength can reach 1–2 GPa, and the Young’s modulus can reach 100–150.