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Microsphere
Polymer microsphere
With controllable size, small batch-to-batch difference, PS microspheres have a good adsorption, mechanical properties and surface activity. They can be coupled to fluorescent molecules, streptavidin, proteins, nucleic acid probe molecules, etc., and are widely used in latex Immune turbidity, cell labeling, protein separation and purification, drug carriers, separation column packing.
SiO2 microspheres have the advantage of stable physical and chemical properties, uniform particle size and good biocompatibility. They can be widely used in biomedical fields such as drug carriers, biocatalysis, biosensing, and disease diagnosis.
▲ Figure a, b, c is the SEM, TEM and optical microscope inspection results of PS microspheres;
Figure d is the SEM inspection results of SiO2 microspheres
Magnetic microspheres have superparamagnetic properties, monodisperse, high magnetic saturation, controllable particle size and magnetic content. Among them, the surface carboxylated magnetic microspheres can be coupled with biological ligands such as peptides and antibodies for biological applications detection.The surface silicon hydroxylated magnetic beads can be combined with DNA and RNA for high-throughput and automated nucleic acid extraction.
▲ Figure a, b, c, d is the SEM, TEM, TGA and VSM test results of Fe3O4 microspheres
▲Figure a, b, c is the SEM, TEM and DLS detection results of Fe3O4@SiO2 microspheres;
and the properties of photonic crystals under a magnetic field
Fluorescent microspheres
Fluorescent microspheres have a good thermal stability, dispersibility, high fluorescence stability & surface modification and good biocompatibility. Magnetic fluorescent microspheres also have strong magnetic responsiveness and can be widely used in biological testing, disease diagnosis, immune testing, liquid chip technology, high-throughput drug screening and other biomedical fields.
▲Figures a, b, c, d is the SEM and fluorescence microscope inspection results of polymer microspheres/QDs;
and photos under purple light
▲Figures a, b, c is the fluorescence spectra of two-color QDs@polymer microspheres
and photos under purple light (QD ratios are red: green=1:2, 1:1, 2:1)
▲Figure a, b, c, d is the SEM and TEM inspection results of composite magnetic fluorescent microspheres,
as well as fluorescence spectrum and fluorescence microscope photos
Polymer Microspheres
Magnetic microspheres
Fluorescent Microspheres
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