15 results about "Plasmonic nanoparticles" patented technology

Precursors for forming a plurality of multielement materials of different compositions can be deposited on different portions of a common substrate according to a combinatorial approach. The substrate can be subjected to a thermal shock, thereby converting the deposited precursors into separate multielement materials on the substrate. The thermal shock can be a temperature greater than or equal to 500° C. and a duration less than 60 seconds. In some embodiments, each multielement material can be tested with respect to an electrical property, a chemical property, or an optical property. Based on the results of the testing, a composition of a multielement material can be determined for use in a predetermined application, such as use as a catalyst, a plasmonic nanoparticle, an energy storage device, an optoelectronic device, a solid-state electrolyte, or an ion conductive membrane.

The application belongs to the technical field of two-dimensional metasurface, and discloses a plasmonic metasurface with low optical loss and low cost and a preparation method thereof. The plasmonic metasurface is composed of a substrate providing support performance and plasmonic nanoparticles with optical modulation capability. The preparation steps are as follows: S1, preparing an assembly master template; S2, preparing a sub-template by the master template in step S1; S3, synthesizing plasmonic nanoparticles; S4, assembling the plasmonic nanoparticles in step S3 on the surface of the substrate by the sub-template in step S2 to obtain the plasmonic metasurface. The application can solve the problems of large optical loss and high preparation cost of the current plasmonic metasurface, effectively improve the optical properties of the metasurface, and provide higher flexibility for the preparation of the plasmonic metasurface.

An endovascular system for targeted photothermal ablation of perivascular nerves is disclosed. A catheter includes a fluid lumen communicating with outlet orifices, and an electromagnetic radiation emitter positioned within a support structure that apposes the array against a vessel wall. A proximal console independently controls irradiation and injection parameters. In use, a nanofluid comprising plasmonic nanoparticles, such as gold nanorods tuned for near-infrared absorption, is injected into or through the vascular wall and subsequently irradiated intraluminally; the nanofluid absorbs energy and converts it to heat to ablate adjacent nerve fibers while reducing non-target tissue heating.

By utilizing eutectic gallium–indium nanoparticles for wastewater treatment of contaminated water, holes (h+) generated through photocatalytic reactions in which the nanoparticles absorb light of specific wavelengths such as ultraviolet or visible light cause oxidation reactions that cleave bonds between carbon (C) and hydrogen (H), while electrons (e-) generated by the photocatalytic reactions cause reduction reactions that cleave bonds between carbon (C) and fluorine (F). As a result, the invention provides the advantage of decomposing and defluorinating perfluorinated compounds. Details of the project that supported this invention are as follows. [Project Identification Number] 1711189578 [Project Number] 2022R1A2C1007071 [Department Name] Ministry of Science and ICT [Project Management (Professional) Institution Name] Korea Research Foundation [Research Project Name] Personal Basic Research [Research Project Name] Dynamic Analysis on Binding and Clustering of Plasmonic Nanoparticles Through Multi-Bond Interaction [Contribution Rate] 1 / 2 [Project Performing Institution Name] Korean Foreign Language University [Research Period] 01 March 2023 to 29 February 2024. Details of another project that supported this invention are as follows. [Project Identification Number] 1485019432 [Project Number] ARQ201901019005 [Ministry Name] Ministry of Environment [Project Management (Professional) Institution Name ] Korea Environmental Industry Technology Institute [Research Project Name] Development of New Technology for Water and Sewage Treatment [Research Project Name] Development of technology for evaluating and removing trace and new pollutants in an oxidation process in a water treatment process [Contribution rate] 1 / 2 [Project Performing Institution Name] Seoul National University [Research Period] 01 March 2023 – 31 December 2023

The invention relates to a mixed electrode containing plasmon nanoparticles and an electrolysis system containing the electrode. According to the mixed electrode and the electrolysis system comprising the electrode, the surface of a catalyst can be reactivated in an electrochemical reaction by means of a plasmon phenomenon by utilizing a plasmon-reactor combined electrode.

The invention provides a detection chip and a method for monitoring the healing state of a chronic wound in real time in vacuum sealing drainage. The preparation method comprises the following steps: S1, providing plasma nanoparticles; s2, preparing a PDMS mold on the silicon template with the micro-channel array, enabling the PDMS mold to be in close contact with a target base material, dripping plasma nanoparticles along the open end of the PDMS mold to obtain an assembly, and volatilizing a solvent in the assembly to obtain the SERS substrate; and S3, modifying the surface of the SERS substrate with a biological recognition element to prepare the detection chip. The detection chip provided by the invention has the characteristics of high sensitivity, good uniformity and stability and the like, and can effectively enhance the Raman signal of the physiological marker. The detection chip is detected by using a Raman spectrometer, so that the inflammation state and the internal potential infection condition information of the chronic wound surface difficult to heal can be accurately obtained in real time on the premise of not destroying the completeness of the closed dressing adopted by the negative pressure closed drainage, and support is provided for effective monitoring of the chronic wound surface.

The invention discloses a preparation method of mesoporous plasmon nanoparticles and application of the mesoporous plasmon nanoparticles in an optical excitation gas sensor. The preparation method of the nanoparticles comprises the following steps: dissolving a gold-containing compound in water, adding a reducing agent, and heating for reaction to obtain a colloidal gold solution; adding water and a second reducing agent, and stirring to obtain a gold nanoparticle aqueous dispersion; adding an organic solvent, a surfactant and a pore expanding agent, emulsifying, adding a dopamine precursor, adjusting the pH to be alkaline to form a mesoporous polydopamine shell layer, and washing and drying; and finally, dipping in a tin-containing compound solution, and carrying out calcination treatment. The prepared mesoporous plasmon nanoparticles can be applied to preparation of optical excitation gas sensors. The sensor has high sensitivity and high selectivity response to NO2 gas, can stably work at room temperature, and shows excellent response performance to the NO2 gas concentration range of 0.2-10 ppm.

The application relates to the field of biotechnological analysis and detection, in particular to a method for analyzing protein kinase activity by using AuNPs coupled monomolecular fluorescence imaging; the method for realizing super-sensitive detection of protein kinase based on plasmonic nanoparticle coupled monomolecular dynamics fingerprinting is to use AuNPs as a substrate, fix other components for convenient observation, meanwhile, due to the addition of AuNPs, the surface plasmon effect of gold particles is used to enhance molecular fluorescence, improve detection signal and signal-to-noise ratio, break the limitation of imaging chain concentration, and accelerate the imaging speed; compared with a traditional amplification method, the background signal is greatly reduced, zero-background detection is basically realized, non-specific amplification is prevented, and false positive signals in the amplification process are avoided.

An article is disclosed comprising one or more layers of plasma nanoparticles located between opposing dielectric material layers. A method for manufacturing an article having plasma nanoparticles is also disclosed.

Embodiments relate to compositions, methods, and systems designed to screen and detect antibodies for pathogen detection. Embodiments particularly relate to systems that utilize multilayered plasmonic nanoparticles for enhanced detection sensitivity. Embodiments further relate to systems designed to simultaneously detect treponemal and non-treponemal antibodies for syphilis diagnoses.

The invention discloses composite hydrogel, a preparation method thereof and application of the composite hydrogel in a solar seawater evaporator system, and belongs to the technical field of seawater treatment. The composite hydrogel provided by the invention comprises an evaporation base material and modified plasmon nanoparticles modified on the surface of the evaporation base material, the modified plasmon nanoparticles comprise plasmon nanoparticles and modified polyelectrolyte, wherein the surface of the plasmon nanoparticles is modified with the modified polyelectrolyte; the modified polyelectrolyte is a sulfydryl or N-heterocyclic carbene terminated polyelectrolyte. The prepared composite hydrogel can be applied to a solar seawater evaporator system, under the illumination condition, the plasmon nanoparticles and the polyelectrolyte grafted to the surfaces of the plasmon nanoparticles can synergistically activate water molecules, a thermodynamically unstable hydrogen bond network can be constructed, the solar water evaporation flux and the water recovery rate are remarkably improved, and the application prospect is wide. Moreover, efficient desalination can be realized, and good practical application potential is shown.

Provided herein is technology relating to a method for selectively detecting a target analyte, such as environmental pollutants in a sample; a method of detecting surface-enhanced Raman spectroscopy (SERS) signals of a molecularly imprinted polymers (MIPs) matrix binding to a target analyte; a composition comprising a molecularly imprinted polymers (MIPs) matrix, wherein the MIP matrix comprises noble metal nanoparticles or hybrid plasmonic nanoparticles and an activated recognition cavity specific to a target analyte; and a method for in-situ manufacturing a molecularly imprinted polymers (MIPs) matrix comprising noble metal nanoparticles or hybrid plasmonic nanoparticles.

A quartz crystal microbalance (QCM) sensor is proposed. The QCM sensor comprises a piezoelectric substrate and at least two electrodes in contact with the substrate to induce shear deformations therein through the inverse piezoelectric effect. The substrate has a sensing surface, and, on that surface, a pattern of plasmonic nanoparticle accumulations protruding from the surface. Each accumulation of nanoparticles comprises a plurality of plasmonic nanoparticles arranged about a hump. Plasmonic hot spots are present between neighbouring accumulations of the pattern that are separated a distance that amounts to or to less than the average diameter of the accumulations of the pattern.

A strain sensor according to the present invention comprises: a photo-alignment layer comprising photo-aligned magnetoplasmonic nanoparticles; and an elastic film layer, wherein the magnetoplasmonic nanoparticles comprise a silver (Ag) core and an iron oxide shell.

The invention relates to a preparation method of in-vitro color vision correction wearable equipment, which comprises the following steps of: accurately determining a color weakness / color blindness type by adopting triple verification of image measurement, a color vision correction simulation model and a naturalness evaluation index, and outputting a spectral line of an optical filter according with a color vision disorder condition by utilizing a naturalness and contrast evaluation system; constructing a PDK file between the spectral parameters of the nanoparticles and the structure and process parameters; the method comprises the following steps: establishing a reverse design scheme for synthesizing multi-component plasmon nanoparticles by adopting a gradient descent algorithm and a neural network algorithm, and providing spectral parameters of each component nanoparticle; and constructing a PDK file self-assembled by the nanoparticles, and providing customized full-process design for visual correction by combining the structure parameters and the process parameters of the target nanoparticles obtained by the process. According to the method, through the wearable filter, the image and color recognition capability of the individual patient watching the public display screen is directly changed, and patient-oriented differentiation and customization of low-cost color vision correction wearable equipment are realized.