A method for information encryption, reading, writing, decryption and erasing using nanotechnology

Abstract

The present invention provides a method for information encryption, reading, writing, decryption and erasing using nanotechnology. The method for information encryption, reading and writing using nanotechnology includes step one, substrate pretreatment; step two, coating; step three, adsorption of a photosensitive molecule layer; and step four, writing encrypted information. The method for erasing encrypted information using nanotechnology provided by the present invention selects photosensitive molecules that react to light as the basic unit for drawing encrypted information. Such molecules will undergo chemical reactions including substitution, decomposition, combination, and double decomposition under the influence of electromagnetic waves of a certain frequency, and will be converted into new molecules. The two molecules have different fingerprint spectra. The generated new molecules can be reduced or oxidized to generate the previous photosensitive molecules under the action of a specific laser frequency and a specific reducing agent or oxidizing agent. This makes the process of writing encrypted information more convenient, and the substrate can be reused at the same time.

Description

Technical Field

[0001] The present invention relates to the field of nanotechnology, and in particular to a method for encrypting, reading, writing, decrypting and erasing information using nanotechnology. Background Art

[0002] With the advent of the information age, people have a higher demand for information encryption technology. Information encryption technology relies on the encryption of electronic signals or the algorithmic encryption of original information, but these technologies are already well known and relatively easy to crack. Studies have shown that it is possible to encrypt information by drawing graphics on the minimally invasive substrate plane using nanotechnology.

[0003] In the process of writing to the carrier, if an error occurs due to accidental factors, it is impossible to simply erase the encrypted information. After reading and writing the encrypted information, if there is a need to modify it, the written information cannot be corrected. The existing research method can only achieve single-time writing and cannot be reused. Summary of the invention

[0004] The purpose of the present invention is to provide a method for encrypting, reading, writing, decrypting and erasing information using nanotechnology, so as to solve the problem in the prior art that simple erasure and modification cannot be performed during the process of writing into a carrier.

[0005] In order to achieve the above purpose, the embodiment of the present invention provides the following technical solutions:

[0006] According to a first aspect of an embodiment of the present invention, there is provided a method for encrypting information reading and writing using nanotechnology, comprising the following steps:

[0007] Step 1: Pretreatment of substrate: Select a hard material as the substrate, and polish and clean the surface of the substrate;

[0008] Step 2, coating: coating a thin film on the surface of the substrate treated in step 1, immersing the substrate coated with the thin film in a solvent for ultrasonic treatment;

[0009] Step 3, adsorbing the photosensitive molecular layer; coating the photosensitive molecular layer on the surface of the substrate coated with the thin film after ultrasonic treatment in step 2;

[0010] Step 4: write encrypted information; use a laser of a preset frequency to irradiate the photosensitive molecular layer to generate new molecules; control the movement of the laser according to the information to be encrypted, convert the information to be encrypted into a specific arrangement of new molecules, and realize encryption of the information.

[0011] Furthermore, the hard material includes any one of silicon, quartz, mica, gold, silver, copper, aluminum, glass, and alloy, but is not limited thereto.

[0012] Furthermore, the thin film in step 2 is any one of a noble metal element, a composite metal, graphene, and a semiconductor material, but is not limited thereto.

[0013] Furthermore, the solvent in step 2 is alcohol or ultrapure water.

[0014] Furthermore, the method of coating the photosensitive molecular layer on the surface of the substrate coated with the thin film in step three includes any one of physical vapor deposition, chemical vapor deposition, spin coating or directly immersing the coated substrate into a pre-selected photosensitive molecular solution, but is not limited thereto.

[0015] Furthermore, the photosensitive molecule includes any one of aromatic amines and aromatic nitro compounds, but is not limited thereto.

[0016] According to a second aspect of an embodiment of the present invention, there is provided an information decryption method, comprising scanning the carrier with the low-frequency laser using the fingerprint spectrum of the new molecule as the scanning object to obtain a specific arrangement of the new molecule, thereby decrypting the encrypted information.

[0017] Furthermore, by using spectral two-dimensional imaging technology or scanning imaging technology, the fingerprint spectrum of the new molecule is used as the scanning object and the carrier is scanned using the low-frequency laser to obtain a specific arrangement of the new molecule, thereby achieving decryption of the encrypted information.

[0018] According to a third aspect of an embodiment of the present invention, there is provided a method for erasing encrypted information, comprising the following steps:

[0019] S1. The carrier having written encrypted information or having read encrypted information is contacted with a pre-selected reducing agent solution or oxidizing agent solution;

[0020] S2. Irradiate the position of the substrate to be erased with laser, inducing a reduction reaction or an oxidation reaction of the new molecules at the nanoscale below the needle tip that are irradiated by the laser, thereby generating photosensitive molecules;

[0021] S3. Control the movement of the laser according to the information to be erased, convert the information to be erased into photosensitive molecules, and erase the same information multiple times in the same place.

[0022] Furthermore, the S1 includes contacting the carrier on which the encrypted information has been written or read with a pre-selected reducing agent solution or oxidizing agent solution using a spin coating method, a direct dripping method or a direct immersion method after writing the encrypted information or reading the encrypted information.

[0023] Furthermore, the reducing agent solution or oxidizing agent solution includes any one of a sodium borohydride solution and a nitric acid solution, but is not limited thereto.

[0024] The embodiment of the present invention has the following advantages: The embodiment of the present invention provides a method for information encryption, reading, writing, decryption and erasure using nanotechnology. The method for erasing encrypted information using nanotechnology provided by the present invention selects photosensitive molecules that react to light as the basic unit for drawing encrypted information. Such molecules will undergo chemical reactions including replacement, decomposition, combination, and double decomposition under the influence of electromagnetic waves of a certain frequency, and will be converted into new molecules. The two molecules have different fingerprint spectra, and in them, the original molecules will only react to light below a specific wavelength (i.e. above a specific frequency) to generate new molecules under appropriate conditions, but will not be sensitive to light above the specific wavelength and will not undergo chemical reactions. The generated new molecules can be reduced or oxidized to generate the previous photosensitive molecules under the action of a specific laser frequency and a specific reducing agent or oxidizing agent. This makes the process of writing encrypted information more convenient, and the substrate can be reused at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 Principle spectrogram of writing and erasing encrypted information by photosensitive molecules under laser excitation;

[0027] Figure 2a It represents substrate pretreatment, coating and adsorption of photosensitive molecular layer;

[0028] Figure 2b To write encrypted information to the substrate that has been coated and adsorbed with photosensitive molecules;

[0029] Figure 2c To add a specific reducing agent or oxidizing agent 31 to the carrier;

[0030] Figure 2d Indicates erasing the written encrypted information at the location where a specific reducing agent or oxidizing agent is added;

[0031] Figure 2e The carrier after erasing the encrypted information;

[0032] Figure 3a It is the carrier after the encrypted information "T" is written;

[0033] Figure 3b The carrier after erasing the encrypted information "T";

[0034] Labels in the figure: 11-substrate; 12-film; 13-photosensitive molecular layer; 21-probe; 22-laser; 23-new molecule; 31-reducing agent or oxidizing agent. DETAILED DESCRIPTION

[0035] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Example 1

[0037] This embodiment provides a method for encrypting and reading information using nanotechnology, comprising the following steps:

[0038] Step 1: pretreatment of substrate; select a hard material as the substrate, and polish and clean the surface of the substrate; the hard material includes any one of silicon, quartz, mica, gold, silver, copper, aluminum, glass, and alloy, but is not limited thereto.

[0039] Step 2: coating: coating a thin film on the surface of the substrate treated in step 1, immersing the substrate coated with the thin film in a solvent for ultrasonic treatment; the thin film is any one of a single noble metal, a composite metal, graphene, and a semiconductor material. The solvent is an alcohol or ultrapure water.

[0040] Step 3, adsorbing the photosensitive molecular layer; coating the photosensitive molecular layer on the substrate surface by physical vapor deposition, chemical vapor deposition, spin coating or directly immersing the coated substrate in a pre-selected photosensitive molecular solution;

[0041] Step 4: write encrypted information; use a laser of a preset frequency to irradiate the photosensitive molecular layer to generate new molecules; control the movement of the laser according to the information to be encrypted, convert the information to be encrypted into a specific arrangement of new molecules, and realize encryption of the information.

[0042] Furthermore, the photosensitive molecule includes any one of aromatic amines and aromatic nitro compounds.

[0043] Example 2

[0044] This embodiment provides an information decryption method, including using spectral two-dimensional imaging technology or scanning imaging technology, using the fingerprint spectrum of the new molecule as the scanning object to scan the carrier using the low-frequency laser to obtain the specific arrangement of the new molecule, thereby achieving decryption of the encrypted information.

[0045] Example 3

[0046] This embodiment provides a method for erasing encrypted information, comprising the following steps:

[0047] S1. After writing or reading the encrypted information, the carrier on which the encrypted information has been written or read is contacted with a pre-selected reducing agent solution or oxidizing agent solution using a spin coating method, a direct dripping method, or a direct immersion method. The reducing agent solution or the oxidizing agent solution includes one of a sodium borohydride solution and a nitric acid solution.

[0048] S2. Irradiate the position of the substrate to be erased with laser, inducing a reduction reaction or an oxidation reaction of the new molecules at the nanoscale below the needle tip that are irradiated by the laser, thereby generating photosensitive molecules;

[0049] S3. Control the movement of the laser according to the information to be erased, convert the information to be erased into photosensitive molecules, and erase the same information multiple times in the same place.

[0050] The present invention is described in detail below with reference to the accompanying drawings:

[0051] Figure 1 The principle spectrum diagram of writing and erasing encrypted information for photosensitive molecules under laser excitation. In this example, the photosensitive molecules are adsorbed on the substrate and detected in situ with 532nm laser to obtain the Raman spectrum of the new molecules after the reaction. After adding a specific reducing agent to the position where the new molecules have been generated, the Raman spectrum of the reduced photosensitive molecules is obtained after irradiation with 532nm laser.

[0052] FIG2 is an example of using the information encryption, reading, writing, decryption and erasure method using nanotechnology provided by the present invention to encrypt and erase information;

[0053] Figure 2a It represents substrate pretreatment, coating and adsorption of photosensitive molecular layer, which includes substrate 11, film 12 and photosensitive molecular layer 13.

[0054] In this example, the substrate 11 is a silicon wafer with a smooth surface, and the film 12 is a plasma enhancement layer for enhancing the writing and reading effects. It can be a two-dimensional material with selective light filtering, such as a gold nanofilm with a thickness of 10-300nm. The photosensitive molecules in the photosensitive molecular layer 13 are used to form the basic unit of the encrypted pattern, and can be organic molecules that are sensitive to light, such as aromatic amines and aromatic nitro compounds. The new molecules generated by the reaction are azo molecules;

[0055] Figure 2b In order to write encrypted information to the substrate that has been coated and adsorbed with photosensitive molecules, scanning near-field optical microscopy or needle-tip enhanced Raman spectroscopy can be used, and the fiber probe material can be precious metal or coated with precious metal film.

[0056] In this example, the tip-enhanced Raman spectroscopy technique using a probe 21 coated with a silver film is used, and a 532nm laser 22 is used. The laser frequency threshold (i.e., specific frequency) that can be selected by different photosensitive molecules is also different, which is related to the highest occupied orbital and the lowest unoccupied orbital of the photosensitive molecule and the Fermi level of the film. Under the irradiation of the laser 22, the molecules in the nano-region under the tip of the photosensitive molecule layer 13 react to produce new molecules 23, and the arrangement of the new molecules 23 constitutes the first encrypted information;

[0057] Figure 2c To add a specific reducing agent or oxidizing agent 31 to the carrier;

[0058] Figure 2d Indicates erasing the written encrypted information at the location where a specific reducing agent or oxidizing agent is added;

[0059] Figure 2e It is the carrier after the encrypted information is erased.

[0060] Fig. 3 shows an example of a method for decrypting encrypted information using nanotechnology according to the second aspect of the present invention. In this example, tip-enhanced Raman spectroscopy is used to read information, and the low-frequency laser in the tip-enhanced Raman spectroscopy system used for reading is 785nm laser.

[0061] Figure 3a The carrier after the encrypted information "T" has been written;

[0062] Figure 3b It is the carrier after the encrypted information is erased.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for information encryption, reading, writing, decryption and erasure using nanotechnology, characterized in that: The method for reading and writing information encryption includes the following steps: Step 1: Pretreatment of substrate: Select a hard material as the substrate, and polish and clean the surface of the substrate; Step 2, coating: coating a thin film on the surface of the substrate treated in step 1, immersing the substrate coated with the thin film in a solvent for ultrasonic treatment; Step 3, adsorbing the photosensitive molecular layer; coating the photosensitive molecular layer on the surface of the substrate coated with the thin film after ultrasonic treatment in step 2; Step 4: Write the encrypted information; use a laser of a preset frequency to irradiate the photosensitive molecular layer to generate new molecules; control the movement of the laser according to the information to be encrypted, convert the information to be encrypted into a specific arrangement of new molecules, and realize the encryption of the information; The decryption method of the encrypted information includes using the fingerprint spectrum of the new molecule as a scanning object and using a low-frequency laser to scan a carrier to obtain a specific arrangement of the new molecule, thereby decrypting the encrypted information; The method of erasing information encryption includes the following steps: S1. The carrier having written encrypted information or having read encrypted information is contacted with a pre-selected reducing agent solution or oxidizing agent solution; S2. Irradiate the position of the substrate to be erased with laser, inducing a reduction reaction or an oxidation reaction of the new molecules at the nanoscale below the needle tip that are irradiated by the laser, thereby generating photosensitive molecules; S3. Control the movement of the laser according to the information to be erased, convert the information to be erased into photosensitive molecules, and erase the same information multiple times in the same place.

2. The method for encrypting, reading, writing, decrypting and erasing information using nanotechnology according to claim 1, characterized in that: The hard material includes any one of silicon, quartz, mica, gold, silver, copper, aluminum, glass and alloy.

3. The method for encrypting, reading, writing, decrypting and erasing information using nanotechnology according to claim 1, characterized in that: The thin film in step 2 is any one of a single noble metal, a composite metal, graphene, and a semiconductor material.

4. The method for encrypting, reading, writing, decrypting and erasing information using nanotechnology according to claim 1, characterized in that: The solvent in step 2 is alcohol or ultrapure water.

5. The method for encrypting, reading, writing, decrypting and erasing information using nanotechnology according to claim 1, characterized in that: The method of coating the photosensitive molecular layer on the surface of the substrate coated with the thin film in step three includes physical vapor deposition, chemical vapor deposition, spin coating or directly immersing the coated substrate into a pre-selected photosensitive molecular solution.

6. The method for encrypting, reading, writing, decrypting and erasing information using nanotechnology according to claim 1, characterized in that: By using spectral two-dimensional imaging technology or scanning imaging technology, the fingerprint spectrum of the new molecule is used as the scanning object and the carrier is scanned by the low-frequency laser to obtain the specific arrangement of the new molecule, thereby realizing the decryption of the encrypted information.

7. The method for encrypting, reading, writing, decrypting and erasing information using nanotechnology according to claim 1, characterized in that: The S1 includes contacting the carrier on which the encrypted information has been written or read with a pre-selected reducing agent solution or oxidizing agent solution by using a spin coating method, a direct dripping method or a direct immersion method after writing the encrypted information or reading the encrypted information.

8. The method for encrypting, reading, writing, decrypting and erasing information using nanotechnology according to claim 1, characterized in that: The reducing agent solution or oxidizing agent solution includes any one of a sodium borohydride solution and a nitric acid solution.

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