10 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.

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.

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.

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.

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.

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.