Conventionally, the photon sieve (PS) was made of chrome-coated fused silica and quartz plates. However, fused silica and quartz plates have a size limitation due to their weight and fragility. A membrane PS is attractive since it is lightweight, large size, flexibility and deployable. This paper demonstrates the new concept of membrane PS based on cellulose nanofiber (CNF). The CNF-based PS (CNF-PS) is transparent, flexible, lightweight, and has high strength and toughness. This study highlights the PS fabrication on a CNF film using a micro-nano structure molding technique and its structural stability in an external environmental change. For the first time in literature, through a high vacuum (5 × 10^–8 Torr) environment test, it was shown that CNF has emerged as a promising optical material. Furthermore, the prepared CNF-PS exhibited high beam quality. This study explained the complete research strategy from the isolation of cellulose nanofibers to its PS application. The new concept of CNF-PS will accelerate its broad application to thin and compact photonic devices.

通常，光子筛（PS）由镀铬的熔融石英和石英板制成。然而，熔融石英和石英板由于其重量和易碎性而具有尺寸限制。膜PS由于重量轻，尺寸大，柔韧性好且可展开而具有吸引力。本文演示了基于纤维素纳米纤维（CNF）的膜PS的新概念。基于CNF的PS（CNF-PS）透明，灵活，轻便，并且具有高强度和韧性。这项研究着重介绍了使用微纳米结构成型技术在CNF膜上进行PS制备及其在外部环境变化中的结构稳定性。通过高真空（5×10 ^–8 Torr）环境测试表明，CNF已经成为一种有前途的光学材料。此外，所制备的CNF-PS表现出高光束质量。这项研究解释了从分离纤维素纳米纤维到其PS应用的完整研究策略。CNF-PS的新概念将加速其在薄型和紧凑型光子器件中的广泛应用。