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Abstract：
Traditional coding methods based on graphics and digital or magnetic labels have gradually decreased their anti-counterfeiting because of market popularity. This paper presents a new magnetic anti-counterfeiting coding method. This method uses a high-performance coding material, which, along with small changes to the material itself and the particle size of the superparamagnetic nanomaterials, results in a large difference in the nonlinear magnetization response. This method, which adopts 12-site coding and establishes a screening model by measuring the voltage amplitude of 12-site variables, can code different kinds of products, establishing long-term stable coding and decoding means. Through the anti-counterfeiting experiment of wine, the experiment results show that the authenticity of the coded products can be verified using the self-developed magnetic encoding and decoding system. The new coding technology can verify the anti-counterfeiting of 9000 products, with a single detection accuracy of 97% and a detection time of less than one minute. Moreover, this coding method completely depends on the production batch of the superparamagnetic nanomaterials, which is difficult to imitate, and it provides a new coding anti-counterfeiting technology for related industries with a wide range of potential applications.
摘要：
传统的基于图形和数字或磁性标签的编码方法由于市场的普及而逐渐降低了其防伪性。本文提出了一种新的磁性防伪编码方法。这种方法使用高性能的编码材料，which,随着材料本身和超顺磁性纳米材料的粒径的微小变化，导致非线性磁化响应存在很大差异。这种方法,采用12位编码，通过测量12位变量的电压幅值建立筛选模型，可以编码不同种类的产品，建立长期稳定的编解码手段。通过葡萄酒的防伪实验,实验结果表明，使用自主开发的磁编码解码系统可以验证编码产品的真实性。新的编码技术可以验证9000种产品的防伪，单次检测准确率达97%，检测时间不到一分钟。此外，这种编码方法完全取决于超顺磁性纳米材料的生产批次，很难模仿，为相关行业提供了一种新的编码防伪技术，具有广泛的潜在应用前景。
