special microspheres
![](../images/TiO2-microsphere.jpg)
TiO2 microsphere
TiO2 microsphere...
TiO2 microsphere...
![](../images/gold-nanoparticles.jpg)
gold nanoparticles
gold nanoparticles is ...
gold nanoparticles is ...
![](../images/hollow-microspheres.jpg)
hollow microspheress
hollow microspheres...
hollow microspheres...
![](../images/silver-nanoparticles.jpg)
silver nanoparticles
silver nanoparticles is ...
silver nanoparticles is ...