133 results about "Surface plasmonic resonance" patented technology

The invention belongs to the technical field of SERS (Surface Enhanced Raman Scattering) detection, and relates to a preparation method of an Ag-Fe3O4 composite SERS substrate and application of the Ag-Fe3O4 composite SERS substrate in monitoring trace pollutants in water. Based on a plasma-semiconductor synergistic enhancement mechanism, cubic Fe3O4 nano particles with exposed {100} crystal faces are synthesized through a hydrothermal method, and the cubic Fe3O4 nano particles and Ag nano particles are subjected to ultrasonic-stirring to construct the Schottky heterojunction. The substrate creatively realizes dual-channel enhancement: the local surface plasmon resonance effect of Ag nanoparticles generates electromagnetic enhancement, the narrow band gap of Fe3O4 promotes photo-induced electrons to be transferred to Ag, an interface electric field is formed, and the polarizability of adsorption molecules is remarkably increased. When the probe is applied to detection of trace pollutants in a water body, the probe molecule RB is anchored on the surface of Fe3O4 through carboxyl, and the HOMO energy level of the probe molecule RB and the valence band top of Fe3O4 generate resonance charge transfer, so that the Raman cross section is improved. The detection limit of RB under 0.25 mW laser is increased by several orders of magnitude compared with that of a single Ag substrate.

The invention relates to the field of optical fiber sensing, in particular to a multichannel optical fiber surface plasma resonance sensing probe as well as a preparation method and application thereof. According to the multichannel optical fiber surface plasma resonance sensing probe, the sensing probe adopts an end face reflection type optical fiber sensing structure, and the end face reflection type structure is formed by welding a multimode optical fiber and a coreless optical fiber. A multimode-coreless optical fiber welded end face reflection type structure is adopted, SPR signals are excited through end face total reflection, the defect that a traditional lateral coupling type optical fiber SPR sensor is difficult to carry out directional detection in narrow spaces (such as blood vessels and tissue gaps) is overcome, miniaturized insertion type diagnosis with the minimum diameter being 300 micrometers is achieved, and the SPR sensor is suitable for in-situ monitoring of living tissue; according to the invention, through the nanocluster modification layers (0 / 2 / 4 layers) which are axially distributed at intervals, multi-channel functionalization can be completed only by a pulling method, traditional micro-nano processing and a complex film layer structure are not needed, and the preparation time of the multi-channel sensor is shortened from gt to gt; and the time is shortened from 6 hours to 1 hour.

The invention provides a multicolor visual semi-quantitative detection method for miRNA in skin interstitial fluid, which comprises the following steps: extracting a skin interstitial fluid sample in a minimally invasive manner by combining a microneedle patch with a vacuum negative pressure technology; the method comprises the following steps: incubating a skin interstitial fluid sample and a magnetic nanoprobe of which the surface is immobilized with a hairpin probe H1, opening H1 in the presence of target miRNA, triggering a subsequent hybridization chain reaction of a hairpin probe H2 and H3, and constructing a biotin-rich DNA compound on the surface of a magnetic bead; the method comprises the following steps: carrying out enzyme labeling by using an alkaline phosphatase-streptavidin conjugate, catalyzing ascorbic acid phosphate to generate ascorbic acid to reduce potassium iodate, and generating an iodine elementary substance to etch a gold nano bipyramid, so that the color of a solution is changed, and high-sensitivity detection on target miRNA is realized. The multi-color visual detection method provided by the invention is combined with the gold nano bipyramid localized surface plasmon resonance property change, so that near-full spectrum color change can be generated, and the portability of the sensor and the accuracy of visual analysis can be improved.

The invention discloses a preparation method of an MF (at) NH2 (at) Ag SERS (Surface Enhanced Raman Scattering) sensor for detecting paraquat and diquat, belongs to the field of nano material synthesis and spectral analysis, and solves the problems that a traditional detection method is complicated in process and cannot detect pesticides and free radicals thereof at the same time, and a traditional SERS substrate is poor in enhancement effect and low in stability. The preparation method comprises the following steps: firstly segmenting melamine foam, cleaning and drying, soaking in hydrochloric acid, soaking in a polyethyleneimine aqueous solution to modify amino, drying, soaking in a silver nitrate solution for ultrasonic treatment, adding a sodium borohydride solution under an ice bath, stirring and reducing, and finally cleaning and drying to obtain the sensor. The sensor takes three-dimensional melamine foam as a support, silver nanoparticles are uniformly loaded on the surface of the three-dimensional melamine foam, paraquat, aquacide and free radicals thereof are enriched through electrostatic interaction based on a localized surface plasma resonance principle, and Raman signal enhancement is realized. The detection limit is 10 <-9 > mol / L, the signal stability and repeatability are excellent, the applicability to actual water sample detection is good, the detection of other pesticides can be expanded, and the method is suitable for on-site rapid trace detection.

Provided are compounds, formulations comprising compounds, and devices that utilize compounds, where the devices include a substrate, a first electrode, an organic emissive layer comprising an organic emissive material disposed over the first electrode. The device includes an enhancement layer, comprising a plasmonic material exhibiting surface plasmon resonance that non-radiatively couples to the organic emissive material and transfers excited state energy from the organic emissive material to the non-radiative mode of surface plasmon polaritons. The enhancement layer is provided no more than a threshold distance away from the organic emissive layer, where the organic emissive material has a total non-radiative decay rate constant and a total radiative decay rate constant due to the presence of the enhancement layer. At least one of the organic emissive material and the organic emissive layer has a vertical dipole ratio (VDR) value of equal or greater than 0.33.

The application provides a skin interstitial fluid miRNA multicolor visualization semi-quantitative detection method, which comprises the following steps: incubating a skin interstitial fluid sample with magnetic nano probes of surface immobilized hairpin probes H1, opening H1 and triggering a subsequent hybridization chain reaction of hairpin probes H2 and H3 in the presence of target miRNA, and constructing a biotin-rich DNA complex on the surface of the magnetic beads; performing enzyme labeling by using an alkaline phosphatase-streptavidin coupling compound, and catalyzing ascorbic acid phosphate to generate ascorbic acid potassium iodate, so that the color of the solution changes, and high-sensitivity detection of the target miRNA is realized. The multicolor visualization detection method can produce near-full-spectrum color changes by combining the gold nano double-cone local surface plasmon resonance property change, and is beneficial to improving the portability of the sensor and the accuracy of the visual analysis.

The invention relates to a photochromic lens with a photochromic dye grafted nanoparticle composite film layer and a preparation method of the photochromic lens, and belongs to the technical field of optical lenses. The photochromic lens comprises a lens base material, a priming coat, a photochromic dye grafted nanoparticle composite film layer and a protective layer which are sequentially stacked from bottom to top, wherein chemical bond grafting is formed between the photochromic dye and the surfaces of the gold / silver nanoparticles through sulfydryl or carboxyl at the tail end of a molecule of the photochromic dye. The localized surface plasmon resonance effect of the covalent grafting structure and the nanoparticles synergistically solves the bottlenecks of easy agglomeration, low loading capacity and slow response of the dye in the traditional technology. The lens disclosed by the invention has the characteristics of extremely fast color-changing response, high color fading efficiency, high mechanical strength, good environmental stability and the like, and the comprehensive performance and the service life of the color-changing lens are remarkably improved and prolonged.

To achieve high spectral performance [Solution] The infrared spectrometer according to the embodiment comprises a diffraction grating structure, a metal thin film, and a current detection unit. The diffraction grating structure includes continuous convex and concave portions. A metal thin film is formed on the surface of the diffraction grating structure so that surface plasmon resonance can be excited when infrared light is incident at a specific incident angle. The current detection unit detects the current generated by the surface plasmon resonance. The pitch of the uneven structure in the diffraction grating structure is 1.52 times or more and 2.17 times or less the width of the convex portion.

An aerosol-generating device is disclosed. The aerosol-generating device includes a storage chamber storing an aerosol-generating substance, a wick that is in communication with the storage chamber, a heating element that is in contact with the wick and contains nanoparticles generating heat through surface plasmon resonance, and a light source configured to emit light toward the heating element. The heating element includes a first part receiving light emitted from the light source and a second part disposed outside the first part and having a plurality of holes formed therein.

An surface plasmon microscope includes a light source, a polarization element, a beam splitter, an objective lens, a photodetector, an operation unit, and the like. An illumination optical system including lenses, the polarization element, the beam splitter, and the objective lens guides light output from the light source to converge the light by the objective lens, and illuminates a metal thin film with the light from a lower surface side of a transparent substrate and focuses the light on the metal thin film to generate a surface plasmon resonance. A detection optical system including the objective lens, the beam splitter, and a lens guides reflected light generated by the focused illumination on the metal thin film to the photodetector. The operation unit acquires refractive index information of a sample disposed in contact with the metal thin film based on the reflected light intensity detected by the photodetector.

The application discloses a wavelength modulation surface plasmon resonance imaging sensing method, which generates multiple groups of illumination spectra by controlling a light-emitting diode, processes the spectra into p-polarized light, excites a sensing chip to generate surface plasmon resonance through prism coupling, collects corresponding reflected light intensity images by using a CMOS camera, and reconstructs surface plasmon resonance reflection spectra of each pixel on the sensing chip by using a smooth constraint reconstruction algorithm according to intensity observation values of the pixel in all images and corresponding illumination spectrum data, so as to further extract a phase signal and generate a spatially resolved phase image. The phase signal and the imaging scheme realize high-sensitivity and high-throughput sensing performance. The method realizes low-cost, high-signal-to-noise ratio and high-throughput sensing imaging.

This invention provides an Ag-doped photocatalytic composite membrane, its preparation method, and its application, relating to the field of water treatment membrane technology. The Ag-doped photocatalytic composite membrane of this invention has a composite functional structure consisting of a polyester nonwoven fabric support layer, a PVDF base membrane core layer, an Ag-BaTiO3 / ZnIn2S4 piezoelectric-photocatalytic functional layer, and a polydopamine hydrophilic protective layer, arranged sequentially. By constructing an Ag-doped dual piezoelectric coupled heterojunction system, introducing the surface plasmon resonance effect of Ag ions, and combining plasma-assisted deposition technology with the composite functional structure, this invention achieves a wide spectral response (UV to near-infrared), highly efficient piezoelectric-photocatalytic synergistic degradation, robust catalyst adhesion to prevent detachment, and multiple effects of "separation-degradation-self-cleaning." This solves the problems of traditional piezoelectric-photocatalytic membranes in terms of catalytic efficiency, long-term stability, and industrial adaptability, and has good application prospects.

The invention discloses an erbium-doped zinc selenide composite material as well as a preparation method and application thereof. The preparation method comprises the following steps: dissolving zinc nitrate hexahydrate and erbium nitrate hexahydrate in deionized water, wherein the molar ratio of erbium ions in the zinc nitrate hexahydrate is 0.02-0.08; adding sodium selenite and sodium hydroxide; adding a reducing agent hydrazine hydrate; after hydrothermal reaction for h, washing and drying to obtain the erbium-doped zinc selenide composite material. The material is of a cubic phase ZnSe structure, erbium is uniformly doped in crystal lattices, and the material is in a nearly spherical particle shape. Rich 4f electronic defect states are introduced into a ZnSe band gap through erbium doping, charge transfer (chemical enhancement) is remarkably promoted, the free carrier concentration is improved to excite localized surface plasma resonance (electromagnetic enhancement), and the synergistic effect of two enhancement mechanisms is achieved. The detection limit of the SERS substrate to methylene blue is as low as 3.24 * 10 <-8 > mol / L, the enhancement factor is as high as 1.73 * 10 < 4 >, and a new way is provided for environmental pollutant monitoring.

This invention relates to the field of fiber optic sensor technology, and in particular to a dual-D structure fiber optic sensor for simultaneous refractive index and temperature detection and its fabrication process. The fiber optic sensor includes a cladding layer, within which a fiber core is disposed. A first channel is located at the bottom of the fiber core, and a second channel is located at the top of the fiber core. An inner hexagonal vent ring is disposed within the fiber core, and an outer hexagonal vent ring is formed outside the inner hexagonal vent ring. A first circular hole is formed at the bottom of the fiber core, directly above the first channel, and a second circular hole is formed at the top of the fiber core, directly below the second channel. This invention combines the microstructure design of photonic crystal fibers with the high-sensitivity technology of surface plasmon resonance, offering advantages such as real-time monitoring, no need for marking, and low interference. Replacing ordinary optical fibers with photonic crystal fibers as sensors can solve the phase matching problem, thereby achieving high-sensitivity and multifunctional real-time sensing measurements.

This invention belongs to the technical field of special optical fibers and their photonic devices, and relates to a tunable solid-core anti-resonant optical fiber filter based on surface plasmon resonance. It includes a fiber core, cladding, and outer cladding arranged sequentially from the inside out. The cladding contains six cladding tubes, evenly distributed circumferentially around the center of the fiber core. Each cladding tube includes four unplated and two gold-plated tubes. The two gold-plated tubes are symmetrical about the axis of the fiber core. Both the unplated and gold-plated tubes include a tube wall with a central pore. The inner surface of the tube wall of the gold-plated tubes is coated with a gold film. This invention designs the anti-resonant optical fiber as a solid core structure, making the fiber more robust, and introduces surface plasmon resonance technology into the fiber. By coating the inner wall of the cladding tubes with a gold film to excite the surface plasmon resonance effect, a significant difference in the confinement loss of the two polarization fundamental modes in the fiber core is generated, thereby achieving a polarization filtering effect.

An aerosol-generating device is disclosed. The aerosol-generating device includes: a storage chamber for storing an aerosol-generating substance; the core material is communicated with the storage chamber; a heat-generating body in contact with the core material and including nanoparticles that generate heat by surface plasmon resonance; and a light source configured to emit light toward the heat-generating body. The heat-generating body includes: a first portion that receives light emitted from the light source; and a second portion disposed outside the first portion and having a plurality of holes formed therein.

The invention relates to the technical field of biomedical sensing and wearable health monitoring, and discloses a photoelectrochemical sensing microneedle, a preparation method thereof, a monitoring system and a detection method. The sensing microneedle comprises a swellable dual-network hydrogel microneedle substrate, a three-dimensional conductive network and a semiconductor nanostructure, wherein the three-dimensional conductive network is composed of high-length-diameter-ratio metal nanowires with a local surface plasma resonance effect, and the semiconductor nanostructure is compounded on the surfaces of the metal nanowires and forms a Schottky heterojunction. The mechanical constraint of the rigid polymer skeleton and the high length-diameter ratio of the metal nanowire cooperate to ensure the continuity of the conductive network in a swelling state. Under the irradiation of exciting light, hot electrons are migrated to the surface of a semiconductor through a Schottky junction built-in electric field to generate reactive oxygen free radicals, non-enzymatic catalytic oxidation is carried out on a target analyte in interstitial fluid under zero bias voltage or low bias voltage, a photocurrent signal is generated, and integration of minimally invasive sampling and in-situ high-selectivity detection is realized.

The hydrogen sensor based on temperature compensation comprises a pair of multimode optical fibers, a single-mode optical fiber, a first plasma resonance structure and a second plasma resonance structure, and a protective layer is arranged outside the single-mode optical fiber; the first plasma resonance structure coats at least part of the protective layer from the first end of the single-mode optical fiber; the second plasma resonance structure coats at least part of the protective layer from the second end of the single-mode optical fiber; wherein the first plasma resonance structure comprises a first resonance layer and a first temperature sensing layer which are arranged from inside to outside, and the second plasma resonance structure comprises a second resonance layer, a second temperature sensing layer and a heating layer which are arranged from inside to outside; the first resonance layer and the second resonance layer are used for absorbing hydrogen in the environment and can generate a surface plasma resonance effect under the action of an optical signal, and the heating layer is a hydrogen sensitive material capable of reacting with hydrogen to release heat. Through the arrangement, the hydrogen concentration detection accuracy of the hydrogen sensor is improved.

The present application relates to a kind of metal nanoparticle-based plasmonic enhanced fluorescence multilayer film optical structure and its preparation method and application, the multilayer film optical structure is by with self-assembly metal nanoparticle as enhancement substrate, to be measured fluorescent probe molecule is placed on the surface of the enhancement substrate and obtains.The present application is by the surface plasmon resonance of self-assembly metal nanoparticle, while effectively inhibiting fluorescent probe molecule photobleaching, greatly improves the sensitivity of fluorescence trace gas sensing, the service life of organic probe fluorescence and gas sensor reliability;Compared with the prior art glass substrate fluorescent film technology, the performance of the present application is comprehensively improved, and has good market application prospect.

The application discloses a method for preparing high-entropy alloy based on laser-induced local surface plasmon resonance effect. 2+ , Pd 2+ , Ru 3+ , Rh 3+ , Ir 3+ salt solution; then, the colloid and the noble metal ion salt are thoroughly mixed and uniformly distributed by using ultrasonic and magnetic stirring; finally, the uniformly mixed solution is irradiated by using a modulated 532nm waveband nanosecond pulse laser for 20 minutes, and gold-based high-entropy alloy single-crystal nanoparticles with uniform size can be obtained. The gold colloid and the reduced Pt, Pd and other metals rapidly nucleate and crystallize to generate high-entropy alloy under the promotion of configuration entropy.

To provide a metasurface structure and gas sensor that can accurately detect targets at low concentrations of 1 ppm or less contained in gas. [Solution] Light in the ultraviolet region is irradiated onto the substrate 2 and the metal part 3 on the substrate 2, and only specific wavelengths are absorbed and reflected by surface plasmon resonance, and the gas to be detected is provided near the metal part 3. The aspect ratio of the gap between adjacent metal parts 3 along the x-axis on the substrate 2 is set to 55 / (300-10) or more and 100 or less. The aspect ratio qy of the gap between adjacent metal parts 3 along the y-axis on the substrate 2 is set to 55 / (800-163) or more and 100 / (300-296) or less. The filling factor of the metal part 3 along the x-axis on the substrate 2 is set to 10 / 300 or more and 0.99 or less. The filling factor of the metal part 3 along the y-axis on the substrate 2 is set to 163 / 800 or more and 296 / 300 or less.

To prevent the response characteristics of a measuring device from deteriorating.SOLUTION: A measuring device according to the present invention includes a semiconductor substrate that transmits light of a predetermined wavelength and has a diffraction grating formed on one plate surface, an intermediate layer laminated on a grating surface of the diffraction grating of the semiconductor substrate, and a metal layer that is laminated on a surface of the intermediate layer, forms a Schottky barrier with the semiconductor substrate via the intermediate layer, and causes surface plasmon resonance when irradiated with light of a predetermined wavelength.SELECTED DRAWING: Figure 1

The invention discloses a wide-spectrum high-uniformity black silicon integrated nanogold quadrant detector and a preparation method thereof, the wide-spectrum high-uniformity black silicon integrated nanogold quadrant detector comprises a substrate base material, a micro-nano conical B-Si structure is etched on the substrate base material, gold nanoparticles are deposited and covered on the surface of the micro-nano conical B-Si structure, the photoelectric detector is a double-four-quadrant photoelectric detector, and the thickness of the double-four-quadrant photoelectric detector is larger than that of the micro-nano conical B-Si structure. And the boundary area of the double four quadrants is electrically isolated by etching deep grooves and filling oxygen-silicon compounds to form isolation grooves. The gold nanoparticles are compounded on the surface of B-Si, hot electrons can be excited through a localized surface plasma resonance mechanism and injected into a black silicon conduction band to participate in the photoelectric conversion process, the band gap limitation of the B-Si material is broken through, wide spectral response is achieved, the response capability in a near-infrared region is improved, and the photoelectric conversion efficiency is improved. And meanwhile, a silicon oxide and silicon nitride passivation film is introduced to the surface of the black silicon and gold nanoparticle composite structure, and a surface carrier recombination process is inhibited by filling dangling bonds and defect states on the surface of the black silicon pointed cone structure, so that the dark current level of the device is reduced.

The application belongs to the technical field of surface plasmon resonance sensing, and discloses a method for preparing a surface plasmon resonance chip by taking aluminum as an evaporation material, which comprises the following steps: a) selecting ultraviolet fused quartz as a substrate, cleaning and blowing dry; b) installing an evaporation boat on an evaporation source frame of a resistance type evaporation film coating instrument, adding 2-4 aluminum particles with a diameter of 3*3 mm on the evaporation boat, placing the substrate on a tray, and closing a vacuum chamber and starting cooling water; c) vacuumizing to 1*10 ‑4 The aluminum film is evaporated on the ultraviolet fused quartz substrate at a current of 150 A, a deposition speed of 1.5-2.0 nm / s, and a deposition time of 10-15 seconds. The evaporation mode adopted by the application is the simplest resistance evaporation, which is simple to operate, easy to control in process parameters, strong in repeatability, and low in cost. The aluminum film prepared has a dense and smooth surface and good adhesion, and can be used for surface plasmon resonance chips.

The application discloses a kind of livestock product drug residue detection methods based on near infrared spectroscopy technology, it is related to trace detection field, the detection method includes the following steps: S1, livestock product sample is mixed with buffer solution, and obtain homogenate liquid;S2, hydroxylamine hydrochloride solution is added to homogenate liquid, and oscillation reaction is obtained under mild conditions, and reaction liquid is obtained;S3, nanometer gold stick dispersion liquid is added to reaction liquid, and mixed liquid is obtained;S4, near infrared spectrum of mixed liquid is collected;S5, pretreatment is carried out, and local surface plasmon resonance peak position is extracted, and peak position offset is calculated;S6, peak position offset is substituted into quantitative model, and drug residue concentration is calculated.The application realizes the in-situ release of total residue by selective rupture of the covalent bond between drug and protein, and realizes the high-sensitivity detection of sulfonamides, tetracyclines and fluoroquinolones under the condition of extraction-free by combining the signal amplification effect of nanometer gold stick.

A plasmon-enhanced photocatalyst comprising: (a) a support substrate; and (b) a surface plasma resonance (SPR) metal coupled to / loaded on the support substrate and a method of making the same are described. The SPR metal is a plasmonic metal and is coupled to / loaded on the support substrate by embedding the SPR metal into and onto surfaces of the support substrate. A method of using plasmon-enhanced photocatalysis for the degradation of halogenated organic molecules and compounds in an aqueous solution is also described.

A multi-modal surface plasmon resonance detector for measuring molecular interactions is provided herein. The multi-modal surface plasmon resonance detector includes a detector frame manufactured by metal additive manufacturing, the detector frame comprising integrated conformal cooling passages. The multi-modal surface plasmon resonance detector includes a prism providing a plurality of optical faces for a plurality of optical paths. The multi-modal surface plasmon resonance detector includes a first detection path configured for surface plasmon resonance detection. The multi-modal surface plasmon resonance detector includes a second detection path configured for surface plasmon resonance imaging. The multi-modal surface plasmon resonance detector includes a sensor chip interface configured to receive a sensor chip. The multi-modal surface plasmon resonance detector includes a liquid cooling system configured to circulate liquid through the integrated conformal cooling passages.

This application provides a photonic crystal fiber cancer cell detection sensor based on surface plasmon resonance, relating to the field of fiber optic sensor technology. The sensor includes a photonic crystal fiber body comprising a drum-shaped substrate material with parallel upper and lower cut surfaces. The substrate contains a first layer of air holes, a second layer of air holes, a third layer of air holes, and a bottom layer of air holes. The first layer of air holes includes a first group of air holes, a second group of air holes, and a third group of air holes arranged in a regular hexagonal pattern, with their center of symmetry coinciding with the center of a circle. The second layer of air holes includes a fourth group of air holes and a fifth group of air holes, arranged in a less-than and greater-than sign pattern, respectively. The third layer of air holes includes a sixth group of air holes and a seventh group of air holes, arranged in a less-than and greater-than sign pattern, respectively. The bottom layer of air holes is parallel to the central row of air holes. This application enables the detection of multiple diseases, improves detection sensitivity, and expands the detection coverage.

To provide a surface plasmon resonance sensor capable of obtaining a clear surface plasmon resonance response. [Solution] The surface plasmon resonance sensor comprises a substrate having a first surface and a second surface opposite to the first surface, a metal film provided on the first surface of the substrate and having a sample placement area on a third surface opposite to the first surface where a sample is placed, and being irradiated with light from the second surface side through the substrate, and a diffraction grating provided on the first surface or the second surface, such that at least a part of it overlaps with at least a part of the sample placement area when viewed in the thickness direction of the substrate, wherein the thickness of the substrate between the first surface and the second surface is t, and the refractive index of the substrate at the wavelength of the light is n, then t / n is 2 μm or less.

A photoelectric conversion element including a thin film composed of a transition metal dichalcogenide and formed on a base material. In the present invention, a surface of the thin film composed of the transition metal dichalcogenide is modified with at least any nanorod particles of Au nanorod particles composed of Au and Ag nanorod particles composed of Ag. An average aspect ratio of the Au nanorod particles is 3.0 or more and 12.0 or less, and an average aspect ratio of the Ag nanorod particles is 3.0 or more and 13.0 or less. In the invention, the sensitivity to light having wavelengths in the near-infrared region improves by a sensitizing action attributed to localized surface plasmon resonance that is developed by the Au and Ag nanorod particles.