Bioinspired thermadapt shape-memory polymer with light-induced reversible fluorescence for rewritable 2D/3D-encoding...

Area of Science:

• Materials Science
• Chemistry
• Information Security

Background:

• Fluorescent materials offer stimuli-responsive color-shifting for information encryption.
• Existing 2D fluorescent encoding methods face risks of information leakage.
• Mimic octopus camouflage inspires novel approaches to integrated 2D/3D information encoding.

Purpose of the Study:

• To develop a thermadapt shape-memory fluorescent film (TSFF) for integrated 2D/3D information encoding.
• To enhance information security by combining rewritable 2D and 3D data storage.
• To create a smart material system for high-security information carriers.

Main Methods:

• Fabrication of TSFF using an anthracene group with reversible photo-cross-linking and a poly(ethylene-co-vinyl acetate) network with thermadapt shape-memory properties.
• Utilizing reversible photo-cross-linking for repeatable fluorescence shifting and rewritable 2D encoding.
• Employing thermadapt shape-memory properties for reconfigurable 3D pattern creation and erasure, enabling rewritable 3D information.

Main Results:

• The TSFF demonstrates repeatable fluorescence shifting via reversible photo-cross-linking, enabling rewritable 2D encoding.
• The material exhibits thermadapt shape-memory properties, allowing for the creation and erasure of 3D patterns for rewritable 3D information.
• Sequential application of heating for shape recovery and UV exposure allows for secure decoding of integrated 2D/3D information.

Conclusions:

• The developed TSFF offers a novel strategy for rewritable 2D/3D encoding, significantly enhancing information security.
• This integrated approach overcomes the limitations of traditional 2D fluorescent encoding by adding a dimension of shape-based information storage.
• The TSFF material system holds promise for the future design of advanced, high-security information carriers.