国产人妖在线视频I午夜av一区二区三区I国产色一区二区I一级片视频在线观看I一级毛片儿I亚色图I丁香花一区二区I超碰97在线免费I久久精品中文字幕I日韩在线视频观看免费I无码中文字幕色专区I欧美专区亚洲专区I国产tv在线观看I2024最新黄色网址I日本老妇高潮乱hdI成人免费入口I日韩精品视频在线看I国产传媒在线播放I一本岛视频在线观看I自拍日韩亚洲一区在线I国产成人亚洲综合a∨婷婷I国产精品2019I色亚洲天堂Iav黄色免费I欧美大尺度视频

Assembly design and biological application of a carbon-based asymmetric porous micro-nano robot

Carbon-based asymmetric porous micro-nano robot is a kind of nano-carbon material with asymmetric, hollow and porous structure, which can be used as a near-infrared light-driven intelligent nano-truck to realize the controllable loading and unloading of goods. This material is prepared by the kinetic regulation interface super assembly strategy, namely through the precise regulation of two kinds of precursor (silica and phenolic resin) polymerization rate, make its competition in the same reaction system for nucleation and growth, form asymmetric composite materials, and then through high temperature carbonization and remove silica steps, get the final product. This material has the following characteristics: Structural asymmetry: a smooth solid small hemisphere shell and a large hemisphere shell with porous structure make it produce temperature gradient and reverse thrust under near-infrared light, realizing self-therphoretic movement. Large cavity: the hollow structure provides space for the loading of the cargo, but also reduces the density of the material and improves the rate of movement. Rich holes: the porous structure provides a channel for the unloading of goods, but also increases the specific surface area and capacity of the material, improving its load rate and photothermal effect. Easy surface modification: Carbon-based materials can be surface modified through simple chemical reactions to increase their hydrophilicity, targeting, and biocompatibility. Cases of this material in biological applications: Cargo loading and unloading: The anticancer drug doxorubicin (DOX), as a model cargo molecule, is encapsulated inside the material with the phase change material (melting point of 39℃). Under near-infrared light, the phase change material melts and is released together with DOX to achieve controllable unloading. Chemotherapy and photothermal therapy: The released DOX can be chemotreated, and the photothermal effect of the material itself can also achieve the effect of photothermal therapy. Under the synergistic effect of chemotherapy and photothermal therapy, the therapeutic effect is optimal. Biological operation and biological manufacturing: the use of micro-nano robot technology to carry out micro-nano operation or micro-nano processing of biological cells or artificial tissue, such as cell capture, separation, transfection, manipulation, printing, etc.


advisory
phone
cro@szbknm.com
Tel:+8618915694570
scan

scan
WeChat