64 results about "Silver nanorods" patented technology

The invention discloses a silver nanorod / polymer / silver nanosheet core-shell nanometer material and a preparation method and application of the silver nanorod / polymer / silver nanosheet core-shell nanometer material. The silver nanorod / polymer / silver nanosheet core-shell nanometer material is characterized in that the core-shell nanometer material is composed of the three portions of a silver nanorod core, a polymer cladding layer and a silver nanosheet outer layer, the polymer cladding layer is polystyrene-polyacrylic acid segmented copolymer layer with the thickness being 10 nanometers; the length of the silver nanorod core is from 400 nanometers to 1.3 microns, and the silver nanosheet outer layer is irregular sheets with the edge length being 120-320 nanometers correspondingly; or the length of the silver nanorod core is 175-310 nanometers, and the silver nanosheet outer layer is in a bolt shape with the bottom edge length being 510-780 nanometers correspondingly and covers half of the silver nanorod core. The silver nanorod / polymer / silver nanosheet core-shell nanometer material is prepared through a seed inducement method. The silver nanorod / polymer / silver nanosheet core-shell nanometer material and the preparation method and application of the silver nanorod / polymer / silver nanosheet core-shell nanometer material have the advantages that SERS signal output quite high in intensity is generated, the preparation technology is simple, the preparation period is short, the yield is high, and popularization and mass production are easy.

The invention especially relates to a surface-enhanced Raman scattering substrate with pin holes in its surface and a preparation method, belonging to the technical field of detection of trace substances. According to the invention, a silver nanorod array film is prepared by using an inclined growth process; and then a layer of an alumina film with pin holes is uniformly deposited on the surface of the silver nanorod array film by using low-temperature atomic layer deposition technology, and an obtained sliver-alumina composite nanostructure with pin holes in its surface is used as the surface-enhanced Raman scattering substrate. The method can adjust the parameters of the low-temperature atomic layer deposition technology to control the proportion of the pin holes in the alumina film; an ultrathin oxide layer of the alumina film ensures good surface-enhanced Raman scattering activity of the substrate; and interior silver nanorods are isolated from the outside, so chemical stability of the substrate is greatly improved. Moreover, the alumina film and silver surface layers in the pin holes can both adsorb specific detection molecules; and the substrate is applicable to detection of a plurality of chemical substances, expands the application scope of surface-enhanced Raman scattering and has wide application prospects.

The invention belongs to the technical field of detection of trace organics and discloses a surface-enhanced Raman substrate and a preparation method thereof. The preparation method employing obliquegrowth comprises: depositing an oxide layer at the top end of a silver nanorod array; depositing silver nano particles at the top end of the oxide layer to obtain silver nanorod-oxide-silver particlecomposite serving as the surface-enhanced Raman substrate. The surface-enhanced Raman substrate prepared via the preparation method gains improved thermal stability owing to high melting point of theoxide layer and protection for silver nanorods; the silver nanorods and the silver nano particles are isolated via the oxide layer which is ultra-thin, strong local electromagnetic field enhancement is provided at a gap, and therefore, sensitivity of the substrate herein is greatly improved. The substrate herein is applicable to detection at high temperatures, has great signal-enhancing capacity,provides a widened applicable range for surface enhanced Raman technology, and has great development potential.

The invention provides a display panel and a display device, wherein the display panel comprises: a first display area and a second display area; and a light emitting device located in the first display area; the light emitting device comprises a composite anode structure; in a direction perpendicular to the display panel and directed to a light emitting surface of the light emitting device, the composite anode structure comprises a first electrode layer, a function adjustment layer and a second electrode layer, which are sequentially stacked; and the function adjustment layer comprises a plurality of silver nanorods, the composite anode structure comprises a first state and a second state, and the transmittance of the composite anode structure in the first state is greater than the transmittance in the second state. The display panel is used for improving the imaging quality.

The invention discloses a surface-enhanced Raman scattering detection kit for detecting small tumor nucleic acid markers for a non-disease diagnosis purpose as well as a preparation method and application of the surface-enhanced Raman scattering detection kit. The kit comprises an SERS detection chip, a first reagent and a second reagent. The SERS detection chip is a silver nanorod array substrate with the surface modified with a hairpin type DNA single chain H1, the first reagent is a hairpin type DNA single chain H2, the second reagent is an SERS probe, after the first reagent and the second reagent are added to the SERS detection chip at the same time, the single chain P of the probe on the second reagent is hybridized with the cohesive end of the H1-H2 double chain, and the SERS detection chip is a silver nanorod array substrate with the surface modified with the hairpin type DNA single chain H1. The SERS probe is captured on the SERS detection chip (the base sequence of the nucleic acid probe is adjustable), the detection of the small nucleic acid marker of the gastric cancer is realized by testing the Raman signal of the SERS probe on the SERS detection chip, the integrated detection of multiple nucleic acid biomarkers in complex environments such as serum and the like can be realized, and the detection specificity and accuracy are effectively improved.

The invention belongs to the technical field of detection of trace organic pollutants, and particularly relates to preparation of a nanorod array with adjustable resonance wavelength and a method forquickly detecting trace hydrazine through utilization of the surface-enhanced Raman effect of a silver nanorod. A surface-enhanced Raman substrate comprises a substrate body, and metal silver is deposited on the substrate body, and forms the nanorod array with a forky top. By preparing an independent silver nanorod array thin film with the forky top, the substrate with an excellent surface-enhanced Raman effect is obtained, and then trace hydrazine is quickly detected through the utilization of the surface-enhanced Raman effect. The method is simple, quick, low in cost and high in sensitivity.