RU171070U1 - DEVICE FOR RECORDING INFORMATION ON A FERROELECTRIC MEDIA - Google Patents

Abstract

The utility model can be used to record information on a ferroelectric carrier. The device contains a fixed base 1, rigidly connected with it a coordinate piezodrive 2 and a transparent holder 3. On the transparent holder 3 there is a photodielectric plate 4, coated on the bottom with a transparent conductive film 5, and on top with a dielectric nanoscale film 6. A transparent conductive film 5 is electrically connected to the source pulse voltage (IIN) 7. Also, the device contains a power supply unit (PSU) 8 and an electrically connected source of optical radiation (IOI) 9, which creates a light flux 10, is directed on the photodielectric plate 4. IIN 7 and BP 8 are electrically connected to the individual channels of the two-channel digital-to-analog converter (DAC) 11. The components X 12 and Y 13 of the coordinate piezo drive 2 are controlled by the line and frame shaper (FGC) 14. The operation of the two-channel DAC 11 and FSK 14 coordinates the computer 15. BP 8 and IOI 9 are pulsed. IOI 9 is mounted on the end face 16 of the coordinate piezo actuator 2 so that the light flux 10 is directed to a transparent holder 3 and is perpendicular to its surface 17. IOI 9 creates a sharply focused light flux 10 to form a thin electrically conductive channel 18 in the photodielectric plate 4. The dielectric nanoscale film 6 is made from ferroelectric material. The device further comprises a synchronizing electrical connection 19 between the IIN 7 and the power supply unit 8. A dielectric nanoscale film 6 covers a protective electrode 20, electrically connected to ground 21. Thus, the proposed device ensures the safety of recorded information when exposed to penetrating radiation, elevated temperatures and humidity, increasing reliability information storage. 1 ill.

Description

The invention relates to a technique for storing information, and more particularly to devices for recording information on a ferroelectric carrier.

A device for recording information containing a fixed base, rigidly connected with it, a three-axis piezoelectric drive and a holder mounted one above the other, a dielectric plate placed on the holder and covered from below by a conductive film, and from above by a dielectric nanoscale film, a probe from an electrically conductive material, mounted on the end a three-coordinate piezoelectric actuator so that its tip is in close proximity to the surface of the dielectric nanoscale film, a digital-to-analog a new converter, an electrically connected source of pulse voltage, providing electrical connection between the probe and the conductive film, a line and frame former that controls the X and Y components of the three-coordinate piezoelectric drive, a tunnel gap stabilizer that interacts with component Z of the three-coordinate piezoelectric drive and is electrically connected to the probe and the conductive film , and a computer coordinating the operation of a digital-to-analog converter, a tunnel gap stabilizer, and a line and frame shaper [pat ent at PM No. 80997 of the Russian Federation of February 27, 2009 (analogue)].

The disadvantage of the analogue is the short lifetime of the associated charge and the low speed of recording information, due to the need for the operation of pre-charging the dielectric plate in a known device for recording information.

The closest in technical essence and the achieved result is a device for recording information on a dielectric medium containing a fixed base, a rigidly connected coordinate piezo drive and a transparent holder, a photodielectric plate placed on a transparent holder and covered with a transparent conductive film from below and a nanoscale dielectric film from above , a pulse voltage source electrically connected to a transparent conductive film, a power supply unit and an electrically coupled the optical radiation source associated with it, generating a light flux directed to the photodielectric plate, a two-channel digital-to-analog converter, one of the channels of which is electrically connected to a pulse voltage source, and the other channel to a power supply, line and frame shaper, controlling the components of X and Y coordinate piezoelectric drive, and a computer that coordinates the work of a two-channel digital-to-analog converter and line and frame shaper [patent for PM No. 153527 of the Russian Federation dated July 27, 2015 (prototype)].

In the prototype, the potential relief is on an open surface, which leads to moisture adsorption and the direct negative impact of free charges of an external ionized medium. Moreover, the electret material itself, of which the dielectric nanoscale film is made, is not designed to operate in extreme radiation and climatic conditions, which is due to the recombination of the bound charges of the recorded information with free charges resulting from the ionization of both the ambient air and the dielectric nanoscale film . Also, at elevated temperatures, relaxation processes of bound charges are accelerated.

Thus, the disadvantage of the prototype is the instability of the recorded information when exposed to extreme environmental factors, which does not allow it to work in conditions of penetrating radiation, elevated temperatures and humidity.

The utility model is based on the task of ensuring the safety of recorded information when exposed to penetrating radiation, elevated temperatures and humidity.

The problem is solved in that in the known device for recording information on a dielectric carrier containing a fixed base, a rigidly connected coordinate piezo drive and a transparent holder, a photodielectric plate placed on a transparent holder and coated from below with a transparent conductive film, and above with a dielectric nanoscale film, an impulse voltage source electrically connected to a transparent conductive film, a power supply unit and an optical source electrically connected to it radiation generating a light flux directed to the photodielectric plate, a two-channel digital-to-analog converter, one of the channels of which is electrically connected to a pulse voltage source, and the other channel to a power supply unit, a line and frame shaper that controls the X and Y components of the coordinate piezo drive, and a computer that coordinates the operation of a two-channel digital-to-analog converter and line and frame former, according to the proposed utility model, a power supply and an optical radiation source in are filled with pulsed ones, the optical radiation source is mounted on the end face of the coordinate piezodrive so that the light flux is directed to the transparent holder and perpendicular to its surface, the optical radiation source creates a sharply focused light flux to form a thin electrically conductive channel in the photodielectric plate, the dielectric nanoscale film is made of ferroelectric material, the device further comprises: a synchronizing electrical connection between the source m and pulse voltage supply unit; a protective electrode covering the dielectric nanoscale film; grounding electrically connected to the protective electrode.

The implementation of the power supply and the optical radiation source pulsed allows you to create intense light flux of short duration.

Fixing the optical radiation source at the end face of the coordinate piezo drive in such a way that the light flux is directed to the transparent holder and perpendicular to its surface, ensures that the light flux enters the photodielectric plate and moves it over the entire area of the photodielectric plate.

The sharply focused light flux implements localized electric shunting of the photodielectric plate due to the formation of a thin electrically conductive channel during recording that occurs when the photodielectric plate is irradiated with a narrow non-divergent beam in the presence of an external electric field applied between the transparent conductive film and the protective electrode.

The implementation of a dielectric nanoscale film of a ferroelectric material, for example lead zirconate titanate (PZT), ensures the stability of the residual polarization to extreme radiation and climatic conditions.

The introduction of a synchronizing electrical connection between the power supply and the pulse voltage source allows for simultaneous passage of the processes of generating an electrical recording signal and excitation of the light flux.

The protective electrode covering the dielectric nanoscale film eliminates the negative effects of environmental humidity and reduces the destabilizing effect of ionizing radiation due to screening of environmental charges.

Grounding, electrically connected to the protective electrode, ensures that free charges that occur during ionization of the external environment and the volume of the dielectric nanoscale film are drained to the ground, as well as draining of static electricity.

The essence of the utility model is illustrated by the drawing, which schematically shows a device for recording information on a ferroelectric carrier.

A device for recording information on a ferroelectric carrier comprises a fixed base 1, a rigid piezodrive 2 and a transparent holder 3 rigidly connected to it. A photo-dielectric plate 4 is placed on the transparent holder 3, coated on the bottom with a transparent conductive film 5, and on top with a dielectric nanoscale film 6. A transparent conductive film 5 is electrically connected to a source of pulse voltage (IIN) 7. Also, the device contains a power supply unit (PSU) 8 and an electrically connected source of optical and radiation (IOI) 9 formed pulse. The optical radiation source 9 creates a luminous flux 10 directed to the photodielectric plate 4. The pulse voltage source 7 and the power supply unit 8 are electrically connected to the individual channels of the two-channel digital-to-analog converter (DAC) 11. The components X 12 and Y 13 of the coordinate piezo drive 2 are controlled by a line former and frames (FSK) 14. The operation of the two-channel digital-to-analog converter 11 and the line and frame former 14 is coordinated by a computer 15. The optical radiation source 9 is mounted on the end face 16 of the coordinate piezo rivoda 2 so that the light beam 10 is directed at a transparent holder 3 and is perpendicular to the surface 17. The optical radiation source 9 generates ostrosfokusirovannym luminous flux 10 to form a thin conductive channel 18 in the plate 4. photodielectric nanoscale dielectric film 6 made of a ferroelectric material.

The device further comprises:

- synchronizing electrical connection 19 between the pulse voltage source 7 and the power supply 8;

- a protective electrode 20 covering the dielectric nanoscale film 6;

- grounding 21, electrically connected to the protective electrode 20.

A device for recording information on a ferroelectric carrier operates as follows.

In accordance with a given program through a two-channel digital-to-analog Converter 11, the computer 15 controls the source of the pulse voltage 7 and the power supply 8.

During the recording of information, the pulse voltage source 7 supplies a positive or negative electric recording pulse to the transparent conductive film 5. As a result, an electric field arises between the grounded protective electrode 20 and the transparent conductive film 5. Due to the synchronizing electrical connection 19, at the same time, the power supply unit 8 sends an electrical pulse to the optical radiation source 9, where an intense, sharply focused light stream 10 of short duration is excited, directed to the transparent holder 3 perpendicular to its surface 17. Passing through the transparent holder 3 and the conductive film 5, sharply focused luminous flux 10 enters the photodielectric plate 4. In the area of penetration of the luminous flux 10, a localized electric the mounting of the photodielectric plate 4 due to the formation of a thin electrically conductive channel 18. The latter closes the electric circuit: a pulse voltage source 7 - a transparent conductive film 5 - a photodielectric plate 4 - a dielectric nanoscale film 6 of a ferroelectric material - a protective electrode 20 - grounding 21, which contributes to switching ferroelectric due to the orientation of the dipole moments of unit cells in the direction of the vector of intensity of the external electric field. Thus, the local region of the dielectric nanoscale film 6 is polarized in accordance with the polarity of the supplied electrical pulse.

When storing the recorded information, due to the absence of a sharply focused light flux 10 and voltage between the protective electrode 20 and the transparent conductive film 5, the dielectric properties of the photodielectric plate 4 are restored. When the external electric field disappears, the polarization state of the local region of the dielectric nanoscale film 6 is largely preserved, and for a very long time (the so-called residual polarization of the ferroelectric).

Information is recorded over the entire area of the dielectric nanoscale film 6 by means of a line and frame shaper 14 and a coordinate piezo drive 2 rigidly connected to a fixed base 1. In accordance with a given program, a line and frame shaper 14 controls components X 12 and Y 13 of the coordinate piezo drive 2, on the end face 16 of which is fixed source of optical radiation 9.

Thus, information is recorded by sequentially creating local regions in the volume of the dielectric nanoscale film 6, the polarization vector of each of which can take two oppositely oriented directions, which makes it possible to distinguish between recorded information as logical “1” and “0”.

The preservation of recorded information under the conditions of the destabilizing effect of ionizing radiation, elevated temperatures and humidity is ensured by the implementation of a dielectric nanoscale film 6 of a ferroelectric material and the presence of a protective electrode 20 electrically connected to ground 21. The ferroelectric material is inherently highly resistant to radiation. The working temperature of inorganic ferroelectrics is significantly higher than the working temperature of electret materials used in the prototype. The grounded protective electrode 20 reduces the destabilizing effect of ionizing radiation and static electricity, eliminates the negative effects of environmental humidity and ensures that free charges that arise during ionization processes run off to the ground.

The proposed device ensures the safety of recorded information when exposed to penetrating radiation, elevated temperatures and humidity, increasing the reliability of information storage.

Claims (1)

A device for recording information on a ferroelectric carrier containing a fixed base, a rigid piezodrive and a transparent holder rigidly connected to it, a photodielectric plate placed on a transparent holder and covered with a transparent conductive film from below and a nanoscale dielectric film above, an impulse voltage source electrically connected with a transparent a conductive film, a power supply unit and an electrically connected source of optical radiation that creates a light flux on mounted on a photodielectric plate, a two-channel digital-to-analog converter, one of the channels of which is electrically connected to a pulse voltage source, and the other channel to a power supply unit, a line and frame shaper that controls the X and Y components of the coordinate piezo drive, and a computer that coordinates the work of the two-channel digital -analog converter and shaper of lines and frames, characterized in that the power supply and the optical radiation source are pulsed, the optical radiation source is fixed n at the end of the coordinate piezoelectric drive so that the light flux is directed to a transparent holder and perpendicular to its surface, the optical radiation source creates a sharply focused light flux to form a thin electrically conductive channel in the photodielectric plate, the dielectric nanoscale film is made of ferroelectric material, the device additionally contains a synchronizing electrical connection between a pulse voltage source and a power supply; a protective electrode covering the dielectric nanoscale film; grounding electrically connected to the protective electrode.

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