A polarized Raman spectrum-coding based nano bar code intelligent label

A Raman spectrum and smart label technology, applied in the field of spectral information coding, can solve the problems of not exploring the relationship between Raman peak characteristics and structure and performance, lack of Raman spectrum coding information capacity and multiple anti-counterfeiting functions, etc., to achieve strong concealment Security and anti-counterfeiting functions, broaden the information capacity and coding methods, and produce easy effects

Active Publication Date: 2021-06-11
NANJING UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, Chinese patent 201310089733.2 discloses a nano-barcode smart label and its identification method based on Raman spectroscopy. It simply considers the existence of Raman peaks and does not explore the relationship between Raman peak characteristics and structure and performance. Information capacity and multiple anti-counterfeiting functions of Raman spectral coding

Method used

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  • A polarized Raman spectrum-coding based nano bar code intelligent label
  • A polarized Raman spectrum-coding based nano bar code intelligent label
  • A polarized Raman spectrum-coding based nano bar code intelligent label

Examples

Experimental program
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Effect test

Embodiment 1

[0041] Embodiment 1, using the invariance and disappearance of a certain peak in the state of polarization detection for encoding

[0042] Using the Raman spectrum measured in the non-polarization detection state and the existence state of the peak of the Raman spectrum in the polarization detection state at a specific position, the state code of the position is obtained by using the XOR operation method, and the obtained state code is the polarization detection state Under double encoding.

[0043] If the Raman peak position at a certain position in the polarization detection state remains unchanged, that is, the Raman peak originally existed (in the non-polarization detection state), and the peak still exists after the polarization detection state, or the original (in the non-polarization detection state) this position No Raman peak position has been measured, and the Raman vibration peak has not been measured in the polarization detection state. At this time, according to t...

Embodiment 2

[0046] Embodiment 2, using the change of the relative intensity of each peak in the state of polarization detection for encoding

[0047] The Raman spectrum measured in the non-polarized detection state and the Raman spectrum in the polarized detection state are used to encode the intensity change of the Raman peak at a specific position. The intensity of the polarized Raman peak is compared with the Raman peak intensity of the non-polarized detection state. increase to 1, such as Figure 4 a, the intensity is weakened or unchanged, expressed as 0 (such as Figure 4 b, c), the state code obtained after the XOR operation is the double code under the polarization detection state.

[0048] According to the combination of the above rules can be Figure 4 The coding of a group of polarized Raman peaks in d is as follows: the peak intensity of the polarized Raman peaks at five positions is enhanced, weakened, enhanced, weakened, and enhanced compared to the peak intensity of the n...

Embodiment 3

[0049] Embodiment 3, use the mobile state of the peak position under the polarization detection state to encode

[0050] Encoding is performed by using whether the Raman spectrum measured in the non-polarized detection state and the Raman spectrum in the polarized detection state move at a specific position of the Raman peak. The peak position of the polarized Raman peak is red-shifted or does not move compared to the peak position of the non-polarized Raman peak, which is represented as 0, that is Figure 5 a and Figure 5 b. The blue-shifted state of the polarized Raman peak compared to the unpolarized Raman peak is expressed as 1, that is Figure 5 c.

[0051] According to the combination of the above rules can be Figure 5 The coding of a group of polarized Raman peaks in d is as follows: the peak positions of the five positions are fixed, red-shifted, blue-shifted, red-shifted, and blue-shifted respectively, and the double code in the corresponding polarization detect...

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Abstract

The invention provides a polarized Raman spectrum-based nano bar code intelligent label, which comprises a base material and a polarized Raman spectrum-coded nano particle coding layer arranged on the base material, and is characterized in that the polarized Raman spectrum-coded nano particle coding layer is a mixed layer comprising a plurality of nano materials with different Raman characteristic peaks; in different polarization detection states, Raman characteristic peaks can present coding characteristics which are completely different from those in a non-polarization detection state and are different from traditional Raman peak positions, and multi-coding spectral characteristics are achieved. When the intelligent label is used, a corresponding nanometer bar code detection system is adopted to detect a commodity label added with the coding nanometer particles, and therefore coding information of the commodity label is obtained.

Description

technical field [0001] The invention belongs to the field of spectral information coding, in particular to a nano barcode label based on polarization Raman spectrum. Background technique [0002] In the past few years, with the rapid development of nanotechnology, the use of microbarcodes and nanobarcodes in different fields has attracted a lot of attention. There are usually two methods of making nano-barcodes. One is that micro-particles are combined into coding modules. Most of the code interpretation is done by pattern recognition, so it is called "graphic method". This kind of nano-barcode is more common. The shape and size of the particles are tailored to produce different encodings. The other is microparticle-loaded encoding components, whose encoding components are molecules or nanoparticles with identifiable characteristics. The material spectrum has a specific shape, definite peak position and half-width, and good sensitivity. So far, the most studied coding of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K19/06
CPCG06K19/06084G06K19/0614G06K19/06037G06K2019/06225G06K19/06028
Inventor 吴兴龙胥加青沈剑沧
Owner NANJING UNIV
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