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US-20260126390-A1 - ANALYSIS DEVICE, ANALYSIS SYSTEM AND PORTABLE INFORMATION TERMINAL

US20260126390A1US 20260126390 A1US20260126390 A1US 20260126390A1US-20260126390-A1

Abstract

An analysis device includes: at least one magnetic element having a first ferromagnetic layer, a second ferromagnetic layer, and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer; and a light source configured to emit a light, wherein the light is applied to an object to be analyzed, and the at least one magnetic element is configured to detect a reflected light reflected by the object or a transmitted light transmitted through the object.

Inventors

  • Hideaki Fukuzawa
  • Tomohito Mizuno
  • Tetsuya Shibata

Assignees

  • TDK CORPORATION

Dates

Publication Date
20260507
Application Date
20251208
Priority Date
20220419

Claims (10)

  1. 1 . An analysis device comprising: at least one magnetic element having a first ferromagnetic layer, a second ferromagnetic layer, and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer; and a light source configured to emit a light, wherein the light source is configured to emit a light of a single wavelength or the light source is configured to emit a light having a continuous spectrum, the light is applied to an object to be analyzed, and the at least one magnetic element is configured to detect a reflected light reflected by the object or a transmitted light transmitted through the object.
  2. 2 . The analysis device according to claim 1 , further comprising a spectrometer, wherein the reflected light or the transmitted light is applied to the at least one magnetic element through the spectrometer.
  3. 3 . The analysis device according to claim 2 , wherein the at least one magnetic element comprises a plurality of magnetic elements, and the reflected light or the transmitted light is applied to the magnetic elements through the spectrometer.
  4. 4 . The analysis device according to claim 1 , further comprising a plurality of wavelength filters, wherein the at least one magnetic element comprises a plurality of magnetic elements, and at least one of the magnetic elements is provided to each of the wave filters, the reflected light or the transmitted light is applied to the at least one of the magnetic elements provided to each of the wave filters through each of the wave filters, and at least one of the wave filters has a transmission wavelength band different from that of other wavelength filters.
  5. 5 . The analysis device according to the claim 1 , wherein the light source is at least one laser element configured to emit a laser light of a single wavelength.
  6. 6 . The analysis device according to claim 5 , wherein the at least one laser element comprises a plurality of laser elements, at least of one of the laser elements is configured to emit a laser light having a wavelength different from that of other laser elements.
  7. 7 . The analysis device according to claim 5 , wherein the at least one laser element is configured to emit a light having a wavelength of 300 nm or more and 2000 nm or less.
  8. 8 . The analysis device according to claim 1 , wherein the light source is configured to emit a light having a continuous spectrum in an infrared region of 800 nm or more and 1 mm or less.
  9. 9 . An analysis system comprising: the analysis device according to claim 1 ; and an information storage device, wherein the analysis system configured to recognize information of the object by comparing: a data of the reflected light or the transmitted light that the analysis device detects with the magnetic element; and a data stored in the information storage device.
  10. 10 . A portable information terminal comprising: the analysis system according to the claim 9 ; and a display monitor configured to display the information of the object.

Description

CROSS-REFERENCES TO RELATED APPLICATIONS This application is a continuation of U.S. Application No. Ser. No. 18/133,261, filed on Apr. 11, 2023, which claims the benefits of Japanese Patent Application No. 2022-068883 filed on Apr. 19, 2022, and Japanese Patent Application No. 2022-180977 filed on Nov. 11, 2022, the entire contents of each of which are hereby incorporated herein by reference for all purposes as if fully set forth herein. BACKGROUND The present disclosure relates to an analysis device, an analysis system, and a portable information terminal. Raman spectroscopic devices, infrared spectroscopic devices, and the like are known as analytical devices that use light. For example, Patent Literature 1 discloses a Raman spectrometer; and Patent Document 2 discloses an infrared spectrometer. A photodetector for detecting light (electromagnetic waves) as an electrical signal is used in the analysis device using light. For example, the Raman spectroscopic device described in Patent Document 1 detects light with a CCD (Charge Coupled Device); and the infrared spectrometer described in Patent Document 2 detects infrared rays with a bolometer. Patent Documents [Patent Document 1] Japanese Unexamined Patent Application, First Publication No. 2006-113021[Patent Document 2] Japanese Unexamined Patent Application, First Publication No. 2000-275105 SUMMARY Although several types of photodetectors are used for photodetection in spectroscopic devices, there are problems such as difficulty in downsizing. Therefore, new breakthroughs are required for further development of analytical devices using light. It is desirable to provide a novel and miniaturizable analysis device, an analysis system, and a portable information terminal. The following means are provided. An aspect of the present disclosure is an analysis device including: at least one magnetic element having a first ferromagnetic layer, a second ferromagnetic layer, and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer; and a light source configured to emit a light, wherein the light is applied to an object to be analyzed, and the at least one magnetic element is configured to detect a reflected light reflected by the object or a transmitted light transmitted through the object. Another aspect of the present disclosure is an analysis system including: the analysis device according to the above-described aspect of the present disclosure; and an information storage device, wherein the analysis system configured to recognize information of the object by comparing: a data of the reflected light or the transmitted light that the analysis device detects with the magnetic element; and a data stored in the information storage device. Another aspect of the present disclosure is a portable information terminal including: the analysis system according to the above-described aspect of the present disclosure; and a display monitor configured to display the information of the object. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of an analysis system according to a first embodiment. FIG. 2 is a block diagram of another example of the analysis system according to the first embodiment. FIG. 3 is a cross-sectional view of the photodetector according to the first embodiment. FIG. 4. is a cross-sectional view of a magnetic element according to the first embodiment. FIG. 5A is a diagram for explaining the first mechanism of the operation example of the magnetic element according to the first embodiment. FIG. 5B is a diagram for explaining the first mechanism of the operation example of the magnetic element according to the first embodiment. FIG. 5C is a diagram for explaining the first mechanism of the operation example of the magnetic element according to the first embodiment. FIG. 5D is a diagram for explaining the first mechanism of the operation example of the magnetic element according to the first embodiment. FIG. 6A is a diagram for explaining the second mechanism of the operation example of the magnetic element according to the first embodiment. FIG. 6B is a diagram for explaining the second mechanism of the operation example of the magnetic element according to the first embodiment. FIG. 6C is a diagram for explaining the second mechanism of the operation example of the magnetic element according to the first embodiment. FIG. 6D is a diagram for explaining the second mechanism of the operation example of the magnetic element according to the first embodiment. FIG. 7A is a diagram for explaining another example of the operation of the magnetic element according to the first embodiment. FIG. 7B is a diagram for explaining another example of the operation of the magnetic element according to the first embodiment. FIG. 7C is a diagram for explaining another example of the operation of the magnetic element according to the first embodiment. FIG. 7D is a diagram for explaining another example of the operation o