SnO₂ Inverse Opal Composite Film with Low-Angle-Dependent Structural Color and Enhanced Mechanical Strength

Abstract

Structural colors are attracting considerable attention for their advantages of environmental friendliness and resistance to fading. However, the weak mechanical strength and intrinsic iridescent color restrict their widespread application. This article describes a SnO inverse opal composite film with low-angle-dependent structural color and enhanced mechanical strength. In the present study, a direct template method was used to prepare SnO inverse opals, which were then embedded in polydimethylsiloxane (PDMS). The structural colors of obtained composite films were low-angle-dependent due to light scattering and high effective refractive index. Meanwhile, because of the good physical strength of PDMS, structures of SnO inverse opals were provided with effective protection. No specific wavelength shift occurred during stretching, and exhibited excellent cycling stability. All these advantages indicated potential applications in packing and decorating materials.

Photonic Vitrimer Elastomer with Self‐Healing, High Toughness, Mechanochromism, and Excellent Durability based on Dynamic Covalent Bond

“…PS and PS@SiO 2 microspheres suspensions were synthesized as previously reported in Liu, et al. [ 25 ] and Wu et al. [ 26 ]…”

“…Synthesis of PS and PS@SiO 2 Microspheres: PS and PS@SiO 2 microspheres suspensions were synthesized as previously reported in Liu, et al [25] and Wu et al [26] Synthesis of Vitrimer Elastomers: First, HTPB, PTMG, and GLY were dried in a 120 °C vacuum oven for 4 h, then, HTPB, PTMG, GLY, and IPDI (Table S1, Supporting Information, shows the specific mass) were added into bottles at 60 °C. Thereafter, 1% DBTDL was sequentially added and vortexed.…”

Thermal Responsive Photonic Crystal Achieved through the Control of Light Path Guided by Phase Transition

“…[ 37–39 ] With the increase of detector angle from 10° to 60°, the wavelength changed little and showed the low angle dependence. In our previous study, [ 40 ] the diffuse reflectance spectra of SnO 2 inverse opal showed low angle dependence. The filling of PEG greatly improved the effective refractive index of TRPC, where the refractive index of PEG was 1.46 and that of air was only 1.…”

Recent Advances in Preparation and Applications of 3D Transition Metal Oxides Semiconductor Photonic Crystal

“…The sol-gel method is the most common preparation method for the 3D TMOPCs. [53][54][55][56][57][58] The compounds containing high-chemical active components are used as precursor mixed in the liquid phase. Then, a stable transparent sol system is formed by hydrolysis and condensation chemical reactions in the solution.…”