Effects of suspension processing conditions on the multi-scale structural changes of photocured SiO2 bodies during sintering process: An operando observation using optical coherence tomography

•Effects of processing methodologies of photocurable SiO2 suspensions were studied.•Suspensions having different dispersion state, but same compositions were designed.•Relation between dispersion state and properties of sintered material were clarified.•Operando OCT observations conducted to reveal structural changes during sintering.