KR102069645B1 - system and method for image scanning utilizing photosynthesis mechanism - Google Patents

Abstract

Provided are an image scanning system and method utilizing a photosynthetic mechanism. The image scanning system includes a light source for emitting light of a first range of wavelengths to an object; A photocurrent generator for absorbing at least one of light passing through the object and light reflected from the object, and generating a current in proportion to light having a wavelength in the first range from the absorbed light; And a measuring unit measuring the current generated by the photocurrent generator.

Description

System and method for image scanning utilizing photosynthesis mechanism

The present invention relates to an image scanning system and method, and more particularly to an image scanning system and method utilizing a photosynthetic mechanism.

The human visual system is constructed through each organ of the eye, which has a corresponding structure with the camera. Plant visual systems cannot be identical to humans, but plants, like humans, are sensitive to the visual environment. For plants, light can be a source of growth as well as a vector of information. Thus, gathering information about the amount of light around the plant, its main direction, and its spectral composition can be important in studying plants.

Here, the phototropism of the plant may be evidence that a certain visual system of the plant is provided. Excavation is a phenomenon in which plants grow in the opposite direction of light, which is due to the change in the concentration of auxin, a plant growth hormone, depending on the direction of light. In other words, it is assumed that plants also have a visual system that can perceive light. In addition, the most common phenomenon among the various phenomena in which plants respond to light in response to light may be photosynthesis. Photosynthesis includes light-dependent light reactions and light-independent cancer reactions in which light energy is captured to form NADPH, a reduced form of the energy storage molecules Adenosine triphosphate (ATP) and NADP (Nicotinamide Adenine Dinucleotide Phosphate). Current can be generated in the process.

The present inventors have developed a sensing system and method using current generated from such photosynthetic mechanism, and the sensing system and method according to the embodiment of the present invention can be utilized to analyze the visual system of a plant.

It is an object of the present invention to provide an image scanning system and method utilizing the photosynthetic mechanism.

An image scanning system according to an embodiment of the present invention includes a light source for emitting a light of a wavelength of the first range to the object; A photocurrent generator for absorbing at least one of light passing through the object and light reflected from the object, and generating a current in proportion to light having a wavelength in the first range from the absorbed light; And a measuring unit measuring the current generated by the photocurrent generator.

The photocurrent generator may include a first electrode, a photocatalyst material layer connected to the first electrode, a second electrode, and an electrolyte electrically connecting the first electrode and the second electrode.

In one embodiment, the photocatalyst material layer may include a photocatalyst in which electrons may be excited to light of the first range of wavelengths.

In one embodiment, the photocatalyst material layer includes a base substrate and a TiO ₂ nano array formed on the base substrate, wherein the base substrate is a glass substrate coated with fluorine-doped tin oxide (FTO). Can be.

In one embodiment, the electrolyte is one of a basic solution, an acidic solution, a neutral solution, seawater and water, the first electrode is a silver / silver chloride (Ag / Agg) electrode, The second electrode may be a platinum (Pt) electrode.

In one embodiment, the light collecting member positioned between the light source and the object further comprises a control unit for controlling the operation unit and the operation unit for moving the object, the operation unit to horizontally move the object sequentially, The current amount according to the position of the object may be recorded and generated as one scan image.

In one embodiment, the photocatalytic material layer may comprise chloroplasts or photosynthetic microorganisms of plants.

An image scanning method according to an embodiment of the present invention includes the steps of: a light source emitting light of a wavelength in a first range to an object;

A photocurrent generating unit, absorbing at least one of light passing through the object and light reflected from the object, and generating a current in proportion to light having a wavelength in the first range from the absorbed light; And a measuring unit measuring the generated current.

In an exemplary embodiment, the measuring of the generated current may further include generating one scan image by recording the current amount according to the position of the object by horizontally moving the object.

In one embodiment, the photocurrent generating unit may include a first electrode, a photocatalyst material layer connected to the first electrode, a second electrode, and an electrolyte electrically connecting the first electrode and the second electrode. Can be.

In one embodiment, the photocatalyst material layer may include a photocatalyst in which electrons may be excited to light of the first range of wavelengths.

In one embodiment, the photocatalyst material layer includes a base substrate and a TiO ₂ nano array formed on the base substrate, wherein the base substrate is a glass substrate coated with fluorine-doped tin oxide (FTO). Can be.

In one embodiment, the electrolyte is one of a basic solution, an acidic solution, a neutral solution, seawater and water, the first electrode is a silver / silver chloride (Ag / Agg) electrode, The second electrode may be a platinum (Pt) electrode.

In one embodiment, the photocatalytic material layer may comprise chloroplasts or photosynthetic microorganisms of plants.

The image scanning system and method according to an embodiment of the present invention is an image scanning system and method using a photosynthetic mechanism of a plant to scan an object in the same form as a conventional CCD or CMOS scanning system, thereby providing a conventional CCD or CMOS scanning system. Can be replaced.

In addition, the image scanning system according to an embodiment of the present invention uses a photosynthetic mechanism of a plant, and can be applied to various electrolyte environments, and can be applied to plants living in various environments. That is, by measuring the light current it may be possible to scan the image of the environment viewed by the plant. This can be used to analyze the plant's visual system.

1 is an exemplary view showing the structure of an image scanning system using a photosynthesis mechanism according to an embodiment of the present invention.
2 is an image showing a nanowire of a photocurrent generator according to an embodiment of the present invention.
3 is a graph showing a current measurement amount of the measurement unit according to an embodiment of the present invention.
4 is an exemplary scanning image in accordance with an embodiment of the present invention.
5 and 6 are exemplary views of another experimental example of the image scanning system according to an embodiment of the present invention.
7 is a flowchart of an image scanning method according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION The following detailed description of the invention refers to the accompanying drawings that show, by way of illustration, specific embodiments in which the invention may be practiced. These examples are described in sufficient detail to enable those skilled in the art to practice the invention. The various embodiments of the invention are different but need not be mutually exclusive. For example, certain shapes, structures, and characteristics described herein may be embodied in other embodiments without departing from the spirit and scope of the invention in connection with one embodiment. In addition, the location or arrangement of individual components within each disclosed embodiment may be changed without departing from the spirit and scope of the invention. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present invention is defined only by the appended claims, along with the full scope of equivalents to which the claims are entitled. Like reference numerals in the drawings refer to the same or similar functions in many respects.

The terminology used herein is a general term that is widely used as far as possible while considering functions, but may vary according to the intention or custom of a person skilled in the art or the emergence of a new technology. In addition, in certain cases, there is a term arbitrarily selected by the applicant, and in this case, the meaning will be described in the description of the corresponding specification. Therefore, the terms used in the present specification should be interpreted based on the actual meanings of the terms and the contents throughout the present specification, rather than simple names of the terms.

1 is an exemplary view showing the structure of an image scanning system using a photosynthesis mechanism according to an embodiment of the present invention. 2 is an image showing a nanowire of a photocurrent generator according to an embodiment of the present invention. 3 is a graph showing a current measurement amount of the measurement unit according to an embodiment of the present invention. 4 is an exemplary scanning image in accordance with an embodiment of the present invention.

1 to 4, the image scanning system 10 includes a light source 110, a photocurrent generator 120, a measurement unit 130, and a light collecting member 140.

The light source 110 may emit light having a wavelength in the first range. The light source 110 may be a light emitting diode (LED) or organic light emitting diodes (OLED). The wavelength of the first range emitted by the light source 110 may be an ultraviolet region (100 nm-400 nm) or an infrared region (700 nm-10,000 nm). That is, the light source 110 may be ultraviolet light or infrared light. However, the present invention is not limited thereto, and the wavelength of the first range may correspond to a specific color of the visible light region. For example, the wavelength of the first range may be 647 nm-700 nm and the light source 110 may be red light, the wavelength of the first range may be 492 nm-575 nm, and the light source 110 may be green light. Here, the light source 110 may be absorbed by the photocurrent generator 120 to be described later to emit light of a wavelength capable of generating a current. Electron may be excited in the photocatalyst material included in the photocurrent generator 120 by light of a wavelength in the first range. The wavelength of the first range may correspond to the bandgap energy of the photocatalyst material. The light source 110 may emit light having the wavelength of the first range to the object 150.

The object 150 may be an object to be scanned in the image scanning system 10. Here, the light emitted from the light source 110 may pass through the object 150 or may be reflected by the object 150. The light may pass through the object 150 in a transparent state. In addition, the object 150 may be partially or entirely opaque, and some wavelengths of light having the wavelength of the first range may be absorbed by the object 150, and other wavelengths may be reflected. That is, the light emitted toward the object 150 may reflect the state of the object 150 to transmit or reflect the object 150. Light transmitted or reflected through the object 150 may be provided to the photocurrent generator 120.

The light collecting member 140 may be positioned between the light source 110 and the object 150. The light collecting member 140 may be composed of a pinhole and a lens. The light emitted from the light source 110 may move to the lens through the pin hole, and may be concentrated on the object 150 while passing through the lens. Here, the lens may be provided to block light except the wavelength of the first range and provide only the light of the first range to the object 150. In addition, the light collecting member 140 may concentrate the light emitted from the light source 110 to a specific region of the object 150.

The photocurrent generator 120 may absorb the light to generate a current. Specifically, the photocurrent generator 120 absorbs at least one of the light passing through the object 150 and the light reflected by the object 150, and the current is proportional to the light of the wavelength of the first range from the absorbed light. Create

In this case, the photocurrent generator 120 may have high sensitivity to light having a wavelength in the first range. That is, the amount of current generated by the photocurrent generator 120 may be proportional to the amount of light of the wavelength of the incident first range. Here, the photocurrent generator 120 may be an artificial photosynthesis device using the photosynthesis principle.

In an exemplary embodiment using an artificial photosynthesis device, the photocurrent generator 120 may include a first electrode 121, a photocatalyst material layer 122 connected to the first electrode, a second electrode 123, and the first electrode and the first electrode 121. And an electrolyte 124 electrically connecting the second electrode.

The photocatalyst material layer 122 may be prepared as a photocatalyst in which electrons may be excited at a wavelength in the first range. That is, the photocatalyst material layer 122 may include a photocatalyst having a bandgap energy in which electrons may be excited at the wavelength of light emitted from the light source.

Here, the correspondence relationship between the material of the photocatalytic material layer 122 and the wavelength of the first range is shown in Table 1 below.

TABLE 1

When the light source 110 is provided with ultraviolet light having a wavelength corresponding to 100 nm to 400 nm, the photocatalytic material layer 122 of the photocurrent generator 120 includes any one of C, BN, AlN, GaN, TiO ₂ , and ZnS. Can be.

For example, the photocatalytic material layer 122 may include a base substrate connected to the first electrode 121 and a TiO ₂ nanowire array formed on the base substrate. TiO ₂ nanowire array according to an embodiment may be provided as follows.

의 길이로 형성될 수 있다. 도 2(a) 및 도 2(b)는 TiO₂ 나노와이어의 평면도이며, 도 2(c)는 TiO₂ 나노와이어의 측면도이다. TiO₂ 나노와이어 어레이로 구비된 광촉매 재료층(122)은 큰 밴드갭(3.2 eV)에 인해 엽록소와 유사한 자외선 광에 대해 높은 감도를 보일 수 있으며, 광을 흡수하는 경우 전류를 생성할 수 있다.The base substrate may be a substrate coated with fluorine-doped tin oxide (FTO) on a glass substrate. The precursor solution was mixed with 30 mL of deionized water (DI water) and 30 mL of concentrated hydrochloric acid (36.5-38 wt%, Sigma Aldrich), followed by addition of 1 mL of titanium isopropoxide (TTIP; Sigma Aldrich 97%). Thereafter, the precursor mixture solution is stirred for 2 hours. The FTO substrate (base substrate) was sequentially ultrasonically cleaned using acetone, isopropanol and deionized water, and then dried with nitrogen gas. The FTO substrate may be partially immersed in the precursor solution, and TiO ₂ nanowires may be grown on the FTO substrate. Hydrothermal growth can be performed at 200 ° C. for 150 minutes. As shown in FIG. 2, the TiO ₂ nanowires on the base substrate (FTO substrate) were 1.8 (± 0.1).

It may be formed in the length of. 2 (a) and 2 (b) are plan views of TiO ₂ nanowires, and FIG. 2 (c) is a side view of TiO ₂ nanowires. The photocatalytic material layer 122 provided with the TiO ₂ nanowire array may exhibit high sensitivity to chlorophyll-like ultraviolet light due to its large bandgap (3.2 eV) and may generate a current when absorbing light.

The photocurrent generator 120 may further include a transparent container filled with the 1M KOH electrolyte 124. As shown in FIG. 1, the photocatalyst material layer 122 and the first electrode 121 may be locked to the electrolyte 124 while being connected to each other, and the second electrode 123 may be connected to the first electrode 121. It may be locked to the electrolyte 124 in a physically separated state. The second electrode 123 may be a reference electrode. Here, the first electrode 121 may be a silver / silver chloride (Ag / Agcl) electrode, and the second electrode 123 may be a platinum (Pt) electrode, but is not limited thereto. In some embodiments, a plurality of second electrodes 123 may be used to increase the accuracy of current sensing.

However, the present invention is not limited thereto, and the photocurrent generator 120 may be a photosynthesis apparatus using chloroplasts and photosynthetic microorganisms of plants as photocurrent generators. That is, the photocatalyst material layer 122 may be provided as the chloroplast or photosynthetic microorganism of the plant described above. By way of example, photosynthetic microorganism means green algae, red algae, cyanobacteria capable of photosynthesis, for example, chlorella, Chlamydomanas, Haematococous, Botryococcus, Sene Scenedesmus, Spirulina, Tetraselmis, Dunaliella, and the like, but are not limited thereto.

The measurement unit 130 may be connected to the first electrode 121 and the second electrode 123 to measure a current generated by the photocurrent generator 120. In addition, the measurement unit 130 may measure the voltage change appearing as the light absorbs. 3 is a graph showing the amount of current measured by the measurement unit 130. FIG. 3 (a) is a graph comparing the irradiated state with no light and 365 nm ultraviolet light, and FIG. 3 (b) is a graph comparing the state in which the ultraviolet light source is turned on / off every 10 seconds. As shown in FIG. 3A, when a light of 365 nm is provided to the photocurrent generator 120, a constant current is generated, but the current is not generated in a dark state in which light is not provided. As shown in FIG. 3B, even when the light is turned on at a predetermined cycle, current generation may also appear accordingly.

For example, the object 150 may be an opaque substrate having an 'S' shaped opening, as shown in FIG. 1. That is, the object 150 may be a shadow mask having an 'S' opening. The light transmitted to the opening may pass through the opening of the 'S' shape to reach the body photocurrent generator 120 maintaining the wavelength of the first range. On the contrary, the light transmitted to the remaining portion may be absorbed or reflected by the object 150, and may not reach the photocurrent generator 120 or may reach the changed wavelength of the light. The electrochemical device 120 may generate a current in proportion to the amount of light having a wavelength in the first range reached. In addition, the light collecting member 140 may focus light only on a specific portion of the object 150. That is, light irradiated to a specific portion of the object 150 may pass through or be reflected thereto to reach the photocurrent generator 120, and the photocurrent generator 120 may generate a current proportional to the reached light. have. The image scanning system 10 according to the present exemplary embodiment may perform scanning of the object 150 using this characteristic.

The image scanning system 10 according to the present exemplary embodiment may further include an operation unit 160 and a controller 170. The manipulation unit 160 may move the object 150. In detail, the manipulation unit 160 may horizontally move the object 150 on the X-Y plane. The degree and direction of the horizontal movement may vary depending on the size of the object 150. The object 150 may have a different position of light irradiated from the light source 110 through horizontal movement. As the position of the object 150 moves, the amount of current generated by the photocurrent generator 120 may also vary.

The controller 170 may control the movement of the object 150 from the manipulation unit 160, and may map the current position of the object 150 and the amount of current generated by the measurement unit 130. That is, the controller 170 may record the current amount according to the position of the object 150 by sequentially moving the object 150 in a specific direction, and may generate one scan image.

The image scanning system according to another embodiment of the present invention may include a plurality of photocurrent generators 120 and a plurality of measurement units 130 connected to the plurality of photocurrent generators 120, respectively. The plurality of photocurrent generators 120 may be arranged in a matrix. Since the amount of light reaching each photocurrent generator 120 may be different from each other, each photocurrent generator 120 may represent a different amount of current, which may be measured by each measurement unit 130. The image scanning system according to another embodiment may perform image scanning based on the amount of current generated according to the matrix arrangement.

4 illustrates a scanning image generated by the controller 170. In the scanning image, the openings of the object 150 are brightly displayed by measuring the current, and the rest of the openings are dark because the current is not measured. The image scanning system 10 according to the present exemplary embodiment may accurately scan and image a feature of a shadow mask having an 'S' opening. In addition, Figure 4 (a) is a basic solution (1M KOH), Figure 4 (b) is an acidic solution (0.5M H2SO4), Figure 4 (c) is a neutral solution, Figure 4 (d) is seawater ( seawater and FIG. 4E show scanning images generated by using water as the electrolyte 140, respectively. That is, it can be seen that the same result in the various electrolytes 140.

The image scanning system 10 according to an embodiment of the present invention artificially generates the photocurrent generator 120 applying the photosynthesis principle to perform image scanning, but the plant may survive in various environments. However, the image scanning system 10 according to an embodiment of the present invention may be applied to various electrolyte environments, and may be applied to plants living in various environments. That is, the photocurrent generator 120 may be a photosynthesis device using the chloroplast of the plant as the photocurrent generator. That is, by measuring the light current generated in the chloroplast of the plant it may be possible to scan the image of the environment viewed by the plant. This can be used to analyze the plant's visual system.

5 and 6 are exemplary views of another experimental example of the image scanning system 10 according to an embodiment of the present invention.

5 shows an experimental example using the object 150 of the transparent material. It can be seen that the transparent object illustrated in FIG. 5A includes a shape having a difference in shade. 5 (b) is an image of the result of image scanning of the transparent object. The image scanning system 10 according to an embodiment of the present invention may distinguish the difference between the shadows of the transparent objects and scan the final image.

6 shows an experimental example in which the flowers of the actual plant are used as the object 150. Light reflected from the flower of the plant may be transmitted to the photocurrent generator 120. However, in view of the fact that the degree of reflection from the flowers of the plant is not the same and the light is dispersed, as shown in FIG. 6 (a), as the light collecting member 140 between the photocurrent generator 120 and the object 150. The lens may be further arranged. The flower of the plant is formed with a pollen guide or juice guide in the center, which attracts pollinators such as bees and butterflies, and the pollen guide may include UV absorption and reflection patterns. Fig. 6 (a) is an image of a flower of a plant photographed with a color CCD. Fig. 6 (c) is an image of a flower of a plant using a mono UV filter CCD. Fig. 6 (d) is of Fig. 6 (a). Is the final scanning image created according to. 6 (a), 6 (b), and 6 (c) are compared with each other, the pollen guide is not distinguished in the color CCD, but the above-mentioned pollen guide is used in the mono UV filter CCD and the scanned image of the present invention. It can be seen that formed in the center of the flower. The image scanning system 10 according to the present exemplary embodiment may scan an object in the same form as a CCD or CMOS scanning system with a conventional UV filter, and may replace the conventional UV filter CCD or CMOS scanning system.

Hereinafter, an image scanning method according to an embodiment of the present invention will be described. The method to be described below may be performed by the system described above, and reference may be made to FIGS. 1 to 6 and related descriptions.

7 is a flowchart of an image scanning method according to an embodiment of the present invention.

Referring to FIG. 7, an image scanning method according to an embodiment of the present invention may include emitting light having a wavelength in a first range to an object (S100); Absorbing at least one of light passing through the object and light reflected by the object, and generating a current in proportion to light having a wavelength in a first range from the absorbed light (S110); Measuring the generated current (S120).

First, the light of the wavelength of the first range is emitted to the object (S100).

Light having a wavelength in the first range may be emitted from the light source 110. The light source 110 may be a light emitting diode (LED) or organic light emitting diodes (OLED). The wavelength of the first range emitted by the light source 110 may be an ultraviolet ray region (100 nm-400 nm) or an infrared ray region (700 nm-10,000 nm). That is, the light source 110 may be ultraviolet light or infrared light. However, the present invention is not limited thereto, and the wavelength of the first range may correspond to a specific color of the visible light region. For example, the wavelength of the first range may be 647 nm-700 nm and the light source 110 may be red light, the wavelength of the first range may be 492 nm-575 nm, and the light source 110 may be green light. Here, the light source 110 may be absorbed by the photocurrent generator 120 to be described later to emit light of a wavelength capable of generating a current. Electron may be excited in the photocatalyst material included in the photocurrent generator 120 by light of a wavelength in the first range. The wavelength of the first range may correspond to the bandgap energy of the photocatalyst material. The light source 110 may emit light having a wavelength in the first range to the object 150.

The object 150 may be an object to be scanned in the image scanning system 10. Here, the light emitted from the light source 110 may pass through the object 150 or may be reflected by the object 150. That is, the light emitted toward the object 150 may reflect the state of the object 150 to transmit or reflect the object 150. Light transmitted or reflected through the object 150 may be provided to the photocurrent generator 120.

Absorbing at least one of the light passing through the object and the light reflected by the object to generate a current in proportion to the light of the wavelength of the first range from the absorbed light (S110).

Absorption of light and generation of current may be performed in the photocurrent generator 120. The photocurrent generator 120 absorbs at least one of light passing through the object 150 and light reflected from the object 150, and generates a current in proportion to light having a wavelength in a first range from the absorbed light. . In this case, the photocurrent generator 120 may have high sensitivity to light having a wavelength in the first range. That is, the amount of current generated by the photocurrent generator 120 may be proportional to the amount of light of the wavelength of the incident first range. Here, the photocurrent generator 120 may be an artificial photosynthesis device using the photosynthesis principle.

The photocurrent generator 120 includes a first electrode 121, a photocatalyst material layer 122 connected to the first electrode, a second electrode 123, and an electrolyte 124 electrically connecting the first electrode and the second electrode. ). The photocatalyst material layer 122 may be prepared as a photocatalyst in which electrons may be excited at a wavelength in the first range. That is, the photocatalyst material layer 122 may include a photocatalyst having a bandgap energy in which electrons may be excited at the wavelength of light emitted from the light source. When the light source 110 is provided with ultraviolet light having a wavelength corresponding to 100 nm to 400 nm, the photocatalytic material layer 122 of the photocurrent generator 120 includes any one of C, BN, AlN, GaN, TiO ₂ , and ZnS. Can be. In exemplary embodiments, the photocatalytic material layer 122 may be provided as a TiO ₂ nanowire array. The photocatalyst material layer 122 may include a base substrate connected to the first electrode 121 and a TiO ₂ nanowire array formed on the base substrate. The base substrate may be a substrate coated with fluorine-doped tin oxide (FTO) on a glass substrate. Here, the first electrode 121 may be a silver / silver chloride (Ag / Agcl) electrode, and the second electrode 123 may be a platinum (Pt) electrode, but is not limited thereto. In addition, the electrolyte 124 may be one of a basic solution, an acidic solution, a neutral solution, seawater, and water.

However, the present invention is not limited thereto, and the photocurrent generator 120 may be a photosynthesis apparatus using chloroplasts and photosynthetic microorganisms of plants as photocurrent generators. That is, the photocatalyst material layer 122 may include the chloroplast or photosynthetic microorganism of the plant described above. By way of example, photosynthetic microorganism means green algae, red algae, cyanobacteria capable of photosynthesis, for example, chlorella, Chlamydomanas, Haematococous, Botryococcus, Sene Scenedesmus, Spirulina, Tetraselmis, Dunaliella, and the like, but are not limited thereto.

Next, the generated current is measured (S120).

The measurement unit 130 may be connected to the first electrode 121 and the second electrode 123 to measure a current generated by the photocurrent generator 120. In addition, the object 150 may be horizontally moved sequentially, and may further include generating a single image by recording an amount of current according to the position of the object.

The present invention has been described above with reference to the embodiments, but the present invention should not be construed as limited by the embodiments or the drawings, and those skilled in the art will recognize the spirit and scope of the present invention as set forth in the claims below. It will be appreciated that various modifications and variations can be made in the present invention without departing from the scope thereof.

10: image scanning system
110: light source
120: photocurrent generating unit
121: first electrode
122: photocatalyst material layer
123: second electrode
124: electrolyte
130: measurement unit
140: light collecting member
150: object
160: operation unit
170: control unit

Claims (14)

A light source emitting light having a wavelength in a first range to the object;
A photocurrent generator for absorbing at least one of light passing through the object and light reflected from the object, and generating a current in proportion to light having a wavelength in the first range from the absorbed light;
A measurement unit measuring a current generated by the photocurrent generator;
A light collecting member positioned between the light source and the object; And
An operation unit for moving the object and a control unit for controlling the operation unit,
The operation unit sequentially moves the object horizontally,
The control unit records an amount of current according to the position of the object, to generate a single scan image image scanning system. According to claim 1,
And the photocurrent generator includes a first electrode, a photocatalyst material layer connected to the first electrode, a second electrode, and an electrolyte electrically connecting the first electrode and the second electrode. The method of claim 2,
And the photocatalyst material layer includes a photocatalyst capable of exciting electrons to light in the wavelength range of the first range. The method of claim 3, wherein
The photocatalyst material layer includes a base substrate and a TiO ₂ nano array formed on the base substrate,
The base substrate is an image scanning system is a glass substrate coated with fluorine-doped tin oxide (FTO). The method of claim 4, wherein
The electrolyte is one of a basic solution, an acidic solution, a neutral solution, seawater and water,
And the first electrode is a silver / silver chloride (Ag / Agcl) electrode and the second electrode is a platinum (Pt) electrode. A light source emitting light having a wavelength in a first range to the object;
A photocurrent generator for absorbing at least one of light passing through the object and light reflected from the object, and generating a current in proportion to light having a wavelength in the first range from the absorbed light; And
It includes a measurement unit for measuring the current generated by the photocurrent generator,
The photocurrent generating unit includes a first electrode, a photocatalyst material layer connected to the first electrode, a second electrode, and an electrolyte electrically connecting the first electrode and the second electrode,
And said photocatalytic material layer comprises chloroplasts or photosynthetic microorganisms of the plant. delete The light source emitting light of the first range of wavelengths to the object;
A photocurrent generating unit, absorbing at least one of light passing through the object and light reflected from the object, and generating a current in proportion to light having a wavelength in the first range from the absorbed light; And
A measurement unit measuring the generated current;
Measuring the generated current,
The object is horizontally moved sequentially,
And recording a current amount according to the position of the object to generate one scan image. delete The method of claim 8,
And the photocurrent generator includes a first electrode, a photocatalyst material layer connected to the first electrode, a second electrode, and an electrolyte electrically connecting the first electrode and the second electrode. The method of claim 10,
And the photocatalyst material layer comprises a photocatalyst capable of exciting electrons to light of the first range of wavelengths. The method of claim 11, wherein
The photocatalyst material layer includes a base substrate and a TiO ₂ nano array formed on the base substrate,
The base substrate is an image scanning method is a glass substrate coated with fluorine-doped tin oxide (FTO). The method of claim 12,
The electrolyte is one of a basic solution, an acidic solution, a neutral solution, seawater and water,
And the first electrode is a silver / silver chloride (Ag / Agcl) electrode, and the second electrode is a platinum (Pt) electrode. The light source emitting light of the first range of wavelengths to the object;
A photocurrent generating unit, absorbing at least one of light passing through the object and light reflected from the object, and generating a current in proportion to light having a wavelength in the first range from the absorbed light; And
A measurement unit measuring the generated current;
The photocurrent generating unit includes a first electrode, a photocatalyst material layer connected to the first electrode, a second electrode, and an electrolyte electrically connecting the first electrode and the second electrode,
And said photocatalytic material layer comprises chloroplasts or photosynthetic microorganisms of plants.

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