Preparation challenge growth process

The relatively recent development of contactless processing, such as aerodynanuc [32], aero-acoustic [42], and electrostatic [38] levitation techniques has enabled the structural determination of amorphous materials that were previously experimentally challenging or even unachievable. Levitation methods have been used for both in situ structural measurements [9, 23] and ex situ for atypical sample preparation this includes sample purification [43, 47] and single crystal growth [6], but is perhaps most often applied to the fabrication of new glasses which are unobtainable by other methods. 

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