35 results about "Near infrared irradiation" patented technology

The invention relates to a preparation method of biocompatible photo-thermal response self-healing conductive hydrogel, which includes: preparing solution from N,N-dimethyl acrylamide monomer, potassium persulfate serving as initiator and N,N,N',N'-tetramethylethylenediamine serving as accelerator; then soaking graphene hydrogel into the monomer solution for solution displacement and standing; and finally, initiating polymerization reaction at the room temperature, so that the biocompatible photo-thermal response self-healing conductive hydrogel is prepared. The preparation method is simple in process, mild in reaction condition, short in reaction time and suitable for industrial production. The hydrogel uses the graphene as a three-dimensional network framework, the graphene is high in reduction degree, chemical stability, electric conductivity and mechanical strength and good in photothermal conversion effect, and the hydrogel shows good self-healing performance within the body temperature range and under near-infrared irradiation.

The invention relates to an 808 nanometer near-infrared excited composite antibacterial coating and a preparation method thereof. The invention utilizes a hydrothermal method to synthesize uniform size polyethylene glycol modified molybdenum sulfide nano-flowers in one pot. Furthermore, chitosan encapsulated in gentamicin loaded polyethylene glycol modified molybdenum sulfide nanoparticles slowedthe drug release rate. The advantages of the invention are: the petal-like molybdenum disulfide grown on titanium surface has a larger specific surface area which can increase the loading of gentamicin, Molybdenum disulfide itself has a good photothermal effect under near-infrared irradiation. The drug is released quickly under the photothermal effect. The synergistic effect of photothermal and gentamicin can achieve higher antibacterial efficiency in a short period of time.

The invention discloses a preparation method and an application of a composite photo-thermal antimicrobial agent of an antimicrobial peptide modified gold nanorod, and belongs to the technical field of material preparation. Specifically, the invention provides the method that the gold nanorod is modified by virtue of antimicrobial polypeptide and synergistic and efficient sterilization is implemented on the basis of an antimicrobial effect of the antimicrobial peptide and a photo-thermal effect of the antimicrobial peptide generated under near-infrared irradiation, and the method mainly comprises the following steps: (1) preparing a gold seed; (2) preparing the gold nanorod; (3) preparing an antimicrobial polypeptide solution; (4) preparing a composite photo-thermal agent of the antimicrobial peptide modified gold nanorod; and (5) implementing photo-thermal bacterium resistance. According to the technology, the antimicrobial polypeptide is modified on the gold nanorod which has a strong NIR absorption effect and is applied to the photo-thermal bacterium resistance. A better synergistic and efficient antimicrobial effect can be achieved with relatively low energy input on the basis of the relatively good antimicrobial effect of the antimicrobial peptide and the photo-thermal effect of the antimicrobial peptide generated under the near-infrared irradiation.

The invention provides an air conditioner and a control method thereof. The air conditioner comprising a capturing unit and a near infrared irradiation unit can detect objects and/or a human body at high precision by image processing. The air conditioners (A) comprises the capturing unit (121) for capturing an air-conditioned room, a near infrared projector (141) having a near infrared light-emitting diode irradiating near infrared rays to the air-conditioned room, a drive control unit for controlling the air conditioning operation according to the captured result of the capturing unit (121), and a control unit (130) for enabling the capturing unit (121) to capture the air-conditioned room in both conditions that the near-infrared rays are not irradiated to the air-conditioned room through the near infrared projector (141) and that the near-infrared rays are irradiated to the air-conditioned room through the near infrared projector (141).

The invention discloses a gold nanometer podophyllotoxin liposome, a preparation method and use thereof. The gold nanometer podophyllotoxin liposome is a nano-composite obtained by causing a gold nanorod to be modified by a polyelectrolyte and then combined with the outer surface of the podophyllotoxin liposome containing carboxyl. The gold nanometer podophyllotoxin liposome is in a typical vesicle shape with a particle diameter of about 129.8 nm and a zeta potential of +15.7 mV, and has a high extinction coefficient (8.08Lg<-1>cm<-1>) and photothermal conversion efficiency (46.1%); and the gold nanometer podophyllotoxin liposome has no cytotoxicity and no hemolysis. The gold nanometer podophyllotoxin liposome has good photothermal stability under near-infrared irradiation and can achieverapid release; and the synergistic treatment of chemotherapy-photothermal therapy has a strong killing effect on tumor cells, and an effect thereof may not be limited to this.

An exemplary embodiments of the present disclosure are directed to providing a skin care apparatus using plasma and near-infrared ray designed to provide effects of improving skin and lifting by irradiating plasma and near-infrared ray generated through dual electric generation on skin contacted by a spherical form. Further, the exemplary embodiments of the present disclosures are directed to providing a skin care apparatus using plasma and near-infrared ray that prevents skin contact or dual irradiation, which were used to happen in the conventional side contact structure, with the method of irradiating plasma and near-infrared ray by using dielectric barrier discharge for each of the plasma discharge groove and near-infrared irradiation groove that are different from the conventional contact structure, through a spot contact spherical body structure.

The invention discloses a temperature-sensitive polymer @ graphene oxide capsule drug carrier. According to the capsule drug carrier, silica spheres serve as a template, hollow cross-linked polymer capsules are prepared through reversible addition-fragmentation chain transfer free radical polymerization, and meanwhile, graphene oxide covers the outer surfaces of the capsules. The invention also discloses a preparation method and an application of the temperature-sensitive polymer @ graphene oxide capsule drug carrier. The temperature-sensitive polymer @ graphene oxide capsule drug carrier provided by the invention has photo-thermal, temperature-sensitive and biodegradable properties, and controllable drug sustained release can be achieved by changing the temperature of the carrier through near-infrared irradiation; and the capsule drug carrier not only can show sensitive response to human physiological temperature but also can respond to bio-molecular glutathione in organism, so that the capsule drug carrier, which is decomposed into a small-lamella polymer chain, can be discharged out of a body easily; therefore, the toxic accumulation of the capsule drug carrier in the organism is reduced.

The invention relates to the field of pharmacy, in particular to a preparation method of nanoparticles with a magnetic targeting function and slow-release controllable photothermal-magnetothermal-anticancer drug synergy. Graphite fluoride is used as a raw material to prepare part of graphene fluoride first; iron oxide is modified with an amino group; the graphene fluoride is then modified with themodified iron oxide; the anticancer drug mitoxantrone is then loaded to the modified graphene fluoride is loaded to obtain iron oxide-graphene fluoride-mitoxantrone nanoparticles; with the nanomaterial serving as a core material and the temperature-sensitive materials, polyvinylpyrrolidone and Arabic gum, as a wall material, the nanoparticles with the magnetic targeting function and slow-releasecontrollable photothermal-magnetothermal-anticancer drug synergy are prepared. The nanoparticles can target at an affected part under the action of a magnetic field, can raise the ambient temperaturethrough magnetic heat and optical heat under orthogonal magnetic field and near-infrared irradiation, can release an anticancer drug under the temperature-sensitive action of the wall material, polyvinylpyrrolidone and Arabic gum, and can then cooperate with the anticancer drug to efficiently and quickly kill cancer cells.

The invention discloses tumor self-targeting photo-isomerization nano-carriers and a preparation method thereof. Nano assembly bodies BRNPs are formed through the self-assembling of bilirubin, 3-aminophenylboronic acid and hydroxyethyl starch; and nano-carriers DBC3NPs coated with HeLa cell membranes are obtained by coating HeLa cell membrane debris on the surfaces of the BRNPs loaded with adriamycin through a continuous extrusion method. The tumor-specific target enrichment of the nano-carriers can be realized under the self-targeting action of the cell membranes; and near infrared irradiation can make nano-particles generate photo-isomerization, thus, the rapid near infrared light releasing of drugs at tumor tissue sites can be realized, and the efficient treatment of tumors can be achieved as well.

The invention discloses a Pluronic-modified molybdenum oxide nano-sheet as well as a preparation method and application thereof. The Pluronic-modified molybdenum oxide nano-sheet has good biological safety, strong photo-thermal conversion effect, high drug loading capacity and PH-dependent biodegradability and can be used as a drug carrier to increase the solubility of a hydrophobic anti-cancer drug and improve the distribution of the hydrophobic anti-cancer drug in a body; the tumor target enrichment ability of the Pluronic-modified molybdenum oxide nano-sheet is improved; the tumor photo-thermal therapy or the chemotherapy-the photo-thermal combined therapy can be realized in combination with near-infrared irradiation, so that the tumor therapeutic effect is improved, and toxic and sideeffects are reduced.

Compositions and methods for administration of local anesthetics that are delivered by a single injection and enable repeated on-demand or high influx analgesia over extended periods have been developed. Pharmaceutical compositions including an effective amount of one or more sodium channel blockers including site 1 sodium channel blockers, optionally one or more alpha-2-adrenergic agonists, which are optionally encapsulated in liposomes, particles or microbubbles, and one or more triggerable elements are provided. The triggerable elements allow delivery of the encapsulated anesthetic drugs when an appropriate triggering stimuli are applied. Exemplary triggering agents or stimuli include near-infrared irradiation, UV- and visible light, ultrasound and magnetic field. In one embodiment, ultrasound is used to trigger a burst of microbubbles to enhance penetration of local anesthetic.

A composition includes a photon upconversion nanoparticle coupled to a photosensitizer nanoparticle that can absorb light and convert tissue oxygen into reactive oxygen species. A low temperature hydrothermal method of making photon upconversion nanoparticles includes dispersing Yb(NO₃)₃, Y(NO₃)₃, and Er(NO₃)₃ in water to prepare a mixture; adding an ethylenediaminetetraacetic acid and NaF with sonication to make a solution; adjusting a pH of the solution to approximately 3.5 using HNO₃ and NaOH; treating the solution hydrothermally at approximately 130° C. for approximately 4 hours; quenching to approximately 20° C.; collecting and washing the photon upconversion nanoparticles. A near infrared triggered photon upconversion method for synergistic photodynamic and photothermal cancer therapy includes administering a nanocomposite comprising a photon upconversion nanoparticle coupled to a photosensitizer nanoparticle that can absorb light and convert tissue oxygen into reactive oxygen species; and exposing the mammal and the nanocomposite to a near infrared source of actinic radiation.

The present invention relates to compositions (self-thermally) curable on demand under the triggering action of UV-visible to near-infrared irradiation of moderate intensity, method of using same for accelerated photopolyaddition of cyclic ether-amine resins or ultrafast dark curing of cyclic ether-amine resins, and articles obtained by such method. The invention also relates to a resin casting, film or coated substrate, and an adhesive layer or bonding agent, comprising acyclic ether-amine resin obtained by an accelerated curing process according to the invention. The invention additionally relates to the use of a composition of the invention for increasing the delamination strength of laminated composite materials.

The invention relates to an experimental device for verifying the treatment effect of near-infrared light on Alzheimer's disease and an application of the device. The experimental device includes an experimental container, a near-infrared irradiation unit arranged at the top of the experimental container and forming an experimental cavity together with the experimental container, and a circuit control unit electrically connected with the near-infrared irradiation unit. During the experiment, an experimental mouse is arranged in an enclosed experimental cavity, the on and off time and the illumination frequency of the near-infrared irradiation unit are automatically adjusted through the circuit control unit, the experimental mouse is subjected to near-infrared illumination treatment, and then is taken out after the near-infrared illumination treatment is completed to be subjected to subsequent verification experiments. Compared with the prior art, the experimental device is simple in structure, economic and practical to use, and convenient to operate, can realize the intelligent control of near-infrared illumination treatment, effectively reduce the experimental errors and the workload of experimental personnel, is high in experiment accuracy, safe and reliable, and has great application prospects.

The invention provides an intelligent window and a preparation method thereof, and relates to the field of new materials. The intelligent window comprises two PEDOT: PSS film electrodes and an electrolyte packaged between the two PEDOT: PSS film electrodes, each PEDOT: PSS film electrode comprises a substrate and a PEDOT: PSS suspension liquid coating arranged on the surface of the substrate, PEDOT: PSS suspension liquid is prepared from ethylene glycol, PH1000 and a fluorine-containing surfactant, the electrolyte comprises a phosphoric acid electrolyte or a phosphoric acid gel electrolyte, and the PEDOT: PSS suspension liquid coating is coated on the surface of the substrate. The phosphoric acid electrolyte is prepared from a phosphoric acid solution, deionized water and ethylene glycol, and the phosphoric acid gel electrolyte is prepared from polyvinyl alcohol and the phosphoric acid electrolyte. According to the intelligent window, the transmittance of solar near-infrared radiation energy can be remarkably regulated and controlled, electrochemical energy storage can be achieved, the visible light transparency is high, all-weather work can be achieved, and the stability is good.

A phototherapy device (100) and a phototherapy instrument (500), comprising a near infrared irradiation module (110) used for emitting near infrared light to the head, and a control component (120) used for controlling the operation of the near infrared irradiation module (110) and coupled to the near infrared irradiation module (110). A method for using near infrared light for therapy, which comprises applying a first, optional second, optional third or more near infrared lights to the head of a patient. The device and method are used for treating Alzheimer's disease, improving brain mitochondrial function and ATP levels, promoting amyloid beta protein (Aβ) decomposition, reducing Aβ deposition, reducing damage to nerve cells, improving nerve tissue repair and regeneration capabilities, improving cognitive ability etc. A therapy method using the phototherapy device (100) or the phototherapy instrument (500), and a computer readable recording medium controlling required near infrared light.

The present invention relates to compositions thermally curable on demand by red to near infrared irradiation, method of using same for thermal amplification of free radical polymerizations, and articles obtained by such method. The invention also relates to the use of a heat-generating dye in association with a thermal initiator for controlling the onset of thermal free radical polymerization.

The invention relates to a modified chitosan-titanium dioxide composite material as well as a preparation method and application thereof; a modified chitosan surfactant used in the modified chitosan-titanium dioxide composite material takes chitosan as a base material and 1,4-dioxane as a grafting agent to modify the chitosan; the film forming property of chitosan and an ethyoxyl structure on a modified body are utilized to promote rutile type titanium dioxide to form a compact nano-film coating layer and form excellent sunlight reflecting capacity, the nano-film is applied to the surface of a fabric to form a sunlight reflecting coating layer, the sunlight reflecting coating layer has the effect of reflecting near-infrared radiation of sunlight, the internal temperature of the fabric is reduced, the sunlight reflecting coating layer is firmly bonded on the surface of the fabric, the fabric does not fall off when being worn, and when the fabric is used on medical protective clothing, the temperature in the protective clothing can be reduced, and the wearing comfort of the protective clothing in summer is improved.