公开(公告)号：US20240383169A1

公开(公告)日：2024-11-21

申请号：US18451821

申请日：2023-08-17

Applicant: NANJING FORESTRY UNIVERSITY

Inventor： QiLiang Fu ,  YuJie Chen ,  Yue Jiao ,  Lei Ye ,  Zhi Yang ,  ChangTong Mei ,  Yan Wu ,  KaiLi Wang

IPC: B27K3/02 ,  B27K3/15 ,  B27K3/36

Abstract: A transparent wood surface imprinting optical device is provided. A preparation method for the device includes cleaning and drying surfaces of transparent wood, spin-coating polymethyl methacrylate (PMMA) on a substrate of the transparent wood to obtain a PMMA layer, and spin-coating an ultraviolet (UV) glue on the PMMA layer to obtain a UV glue layer; placing the transparent wood on a silicon wafer, attaching a transparent grating array imprinting template on the UV glue layer, exposing the UV glue layer, and removing the transparent grating array imprinting after the exposing, thereby to obtain a grating-structure-based transparent wood; and replacing the grating structure imprinting template by a lattice structure imprinting template to prepare lattice-structure-based transparent wood. The diffraction efficiency of the grating structure and the lattice structure on the transparent wood are greater and more stable than those of PMMA substrates.