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| \  / || | || | ||  | |/ //  /_   _//  /_   _// 
|  \/  || | || | ||  | ' //    -| ||-   `-| |,-  
| .  . || | \\_/ ||  | . \\    _| ||_     | ||   
|_|\/|_||  \____//   |_|\_\\  /_____//    |_||   
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Text this: ZnO and rare earth nanoparticles embedded in SiO2 matrix (ZnO-nc: Eu3+SiO2)