8results about How to "High mechanical flexibility" patented technology

This application discloses a flexible light-emitting sensor, its fabrication method, and its application in the non-destructive detection of mercury ions, belonging to the field of sensor materials and detection technology. The technical solution of this application introduces phycocyanin as a functional crosslinking agent into a polyacrylamide (PAAM) network. The prepared phycocyanin-polyacrylamide (PC-PAAM) hydrogel combines the structural stability of polyacrylamide with the fluorescence properties and chemical reactivity of phycocyanin. This gel, within a soft and biocompatible monomer network, integrates strong responsive fluorescence, intrinsic antioxidant protection, and excellent underwater adhesion, achieving direct fingertip contact surface sensing with a synergistic mechano-optical effect. Furthermore, by combining a machine learning model trained based on hydrogel fluorescence images, it can further support precise, portable, and visualized quantitative analysis of mercury ion pollution using smartphone imaging technology.

The invention discloses a preparation method of a PDMS (Polydimethylsiloxane) film for chip microfluidics, and belongs to the technical field of micro-fluidic chip manufacturing. According to the method, in-situ graft polymerization of polyethylene glycol methacrylate in a polydimethylsiloxane network is initiated by ultraviolet, so that chemical bonding of a hydrophilic chain segment is realized; silane-modified aluminum oxide nanoparticles are adopted as an insulating heat-conducting filler, single-particle-level dispersion is realized under the vacuum ultrasonic synergistic effect, and a dual-channel heat-conducting network is constructed; and a 3D printing mold is utilized, so that the limitation of a traditional photoetching process is avoided. The water contact angle of the prepared PDMS film is reduced to 35-45 degrees, the heat conductivity coefficient is increased to 0.48-0.52 W / (m.K), the volume resistivity is kept to be 1014 omega.cm or above, the demolding success rate of an arc-shaped structure reaches 92% or above, the preparation period is shortened to 4-6 hours, and a new technical path is provided for large-scale manufacturing of micro-fluidic chips.

This invention discloses a high-load transparent rare-earth complex organic glass scintillator, its preparation method, and its applications. The scintillator comprises a polymer matrix and an ionic rare-earth complex dispersed therein. The rare-earth complex includes a coordinating anion and an ionic liquid cation. The coordinating anion includes rare-earth ions and organic ligands, and the loading of the rare-earth complex in the polymer matrix can reach 80-90 wt%. By introducing an ionic liquid to construct an ionic supramolecular structure, the scintillator effectively isolates the luminescent center using steric hindrance and charge shielding effects, suppressing concentration quenching and enhancing compatibility with the matrix, allowing the material to maintain transparency of over 90% even under ultra-high loading. The scintillator exhibits a radiative luminescence intensity up to 23.9 times that of commercial LYSO, with a detection limit as low as 56 nGy / s, making it suitable for high-energy particle detection and X-ray imaging.

The application discloses a preparation method of an ionic hydrogel-based humidity generator for efficient power generation and self-powered sensing. By preparing an ionic hydrogel prepolymer solution rich in active functional groups, a pre-polymer hydrogel is formed by short-time initial ultraviolet irradiation. After the pre-polymer hydrogel is transferred to the surface of an electrode, secondary ultraviolet irradiation is performed to enable chemical bonding and interpenetrating network structure between the hydrogel and the electrode. Finally, an active metal top electrode is attached. Through the synergistic design of the two-step curing method and the active electrode, on the one hand, the firm interface combination of the hydrogel and the electrode is realized, and the contact impedance is significantly reduced; on the other hand, the additional output is generated by the redox reaction between the active electrode and the hydrogel, thereby greatly improving the electrical output performance of the device. The obtained generator has excellent electrical output performance in a wide temperature and humidity range, and can be integrated for power supply and used as a high-sensitivity self-powered sensor, and has application prospects in the field of flexible wearable devices.

The invention relates to the field of display, and discloses a crystal film screen based on a composite transparent electrode and a preparation method thereof, the crystal film screen comprises a transparent substrate, a composite transparent electrode layer and a lamp bead array; the composite transparent electrode layer is attached to the surface of the transparent substrate, and the lamp bead array is bonded to the side, away from the transparent substrate, of the composite transparent electrode layer. The transparent conductive oxide layer is filled in the crack gap through a magnetron sputtering process and compactly covers the surface, so that a continuous conductive path is formed, excellent balance between high light transmittance and low resistivity is realized, the non-periodic structure characteristic of disordered arrangement of a metal cracking network is utilized, and the light transmittance is improved. The moire phenomenon generated by regular wiring and a pixel array in a traditional photoetching process is effectively avoided from the physical principle, and the definition and the visual effect of a display picture are remarkably improved. In addition, the oxide layer on the surface can effectively block water and oxygen and protect an internal metal network from oxidation corrosion, so that the chemical stability of the electrode is improved.

The invention relates to an out-of-plane / in-plane differential response flexible sensing material and a preparation method thereof, and belongs to the field of flexible sensing materials. The chemical formula of the flexible sensing material is xAg / PDMS, the numerical value of x is 0-60 vol% and is not 0, x is the volume ratio of Ag to PDMS, the particle size range of Ag nanoparticles is 0.01-20 [mu] m, the functional auxiliary material of the flexible sensing material is a perovskite structure ferroelectric ceramic material (BCZT), and the volume ratio of Ag to BCZT is 3: 100. According to the flexible sensing material, silver nanoparticles and PDMS are compounded, and the silver nanoparticles are regulated by means of an external electric field to form Ag nanoparticle columns which are aggregated in the out-of-plane direction and are isolated from one another, so that the Ag nanoparticles are arranged in a chain shape in the out-of-plane direction, and differential response of high out-of-plane sensitivity / insensitive in-plane sensitivity is achieved; the construction of a quasi-conductive network is realized under the condition of low filling amount, meanwhile, good mechanical flexibility of the material is maintained, and the specific types and geometrical shapes of the conductive particles can be flexibly selected according to actual requirements.

The invention provides a preparation method of a solid-state fiber flexible battery, the solid-state fiber flexible battery and application, and relates to the field of flexible batteries. A coaxial wet spinning technology is innovatively introduced into manufacturing of the solid fiber flexible battery, a coaxial fiber structure comprising the positive electrode, the solid electrolyte and the negative electrode is prepared through a one-time forming technology, and the battery has excellent mechanical flexibility, high energy density and good safety; the energy requirements of wearable equipment and flexible electronics in the future can be met; the flexible battery has remarkable technical innovation and industrial application value in the technical field of flexible batteries.

The invention discloses a photoactive dielectric film, a preparation method and application, and relates to the field of organic electronics and neuromorphic devices, the film is made of a poly (octyl citrate)-cysteine copolymer, and the film has enhanced photoluminescence characteristics after being thermally activated; according to the photoactive dielectric film, L-cysteine is introduced into a polyester matrix, and specific heat treatment (180 DEG C or 200 DEG C annealing) is performed after synthesis, so that the dielectric film is endowed with an adjustable photoluminescence characteristic, and the dielectric layer is converted into an active photoactive functional layer from a passive insulating layer; therefore, the multi-wavelength light response of the neuromorphic device is effectively improved.