Unclonable Micro-Texture with Clonable Micro-Shape towards Rapid, Convenient, and Low-Cost Fluorescent Anti-Counterfeiting Labels | JoVE Visualize

Unclonable Micro-Texture with Clonable Micro-Shape towards Rapid, Convenient, and Low-Cost Fluorescent Anti-Counterfeiting Labels

Yuhong Lin¹, Hongkun Zhang², Jingyun Feng¹

¹Materials Genome Institute, Shanghai University, Shanghai, 200444, China.

Small (Weinheim an Der Bergstrasse, Germany)|June 23, 2021

View abstract on PubMed

Summary

A novel anti-counterfeiting label uses perovskite nanocrystalline films for secure, fast authentication. This physical unclonable function (PUF) offers high encoding capacity and reduced verification time, improving efficiency.

Area of Science:

Materials Science
Nanotechnology
Optoelectronics

Background:

Traditional physical unclonable function (PUF) recognition is slow due to one-by-one database matching.
Existing PUF technologies face challenges in balancing security, cost, and authentication speed.
The need for efficient and unclonable anti-counterfeiting solutions is critical.

Purpose of the Study:

To develop a novel PUF anti-counterfeiting label with enhanced security, cost-effectiveness, and rapid authentication.
To introduce a new PUF recognition strategy that significantly reduces verification time.
To leverage perovskite nanocrystalline films for advanced anti-counterfeiting applications.

Main Methods:

Preparation of inorganic perovskite nanocrystalline films using laser engraving for patterning.
Utilizing liquid strip sliding for high-throughput droplet generation.
Employing evaporative self-assembly for thin film deposition to create unique micro-textures and profiles.
Development of identification software incorporating a divide-and-conquer recognition strategy.

Main Results:

Achieved a low reagent cost of 2.1 × 10<sup>-4</sup> USD per label.
Demonstrated a simple and fast authentication process with an overall time of 12.17 seconds.
Attained a high encoding capacity of 2.1 × 10<sup>623</sup>.
Reduced verification time by over 20 times compared to traditional methods through the divide-and-conquer strategy.

Conclusions:

The developed perovskite nanocrystalline film-based PUF label offers a highly modifiable, unclonable, and cost-effective anti-counterfeiting solution.
The novel recognition strategy significantly enhances authentication efficiency, addressing limitations of traditional PUF technologies.
This technology presents a promising advancement for secure and efficient anti-counterfeiting applications.