Comparative Analysis of Annealing-Dissolution Techniques for Hollow Submicron Metal Oxide Fiber Synthesis.

ABSTRACT: Double-shell ZnO/Al₂O₃ submicron hollow fibers were successfully fabricated through a combined electrospinning and atomic layer deposition (ALD) approach. Polyvinyl alcohol (PVA) fibers were first produced by electrospinning and subsequently coated with a conformal Al₂O₃ barrier layer via low-temperature ALD employing trimethylaluminum (TMA) and deionized (DI) H₂O to preserve the integrity of the temperature-sensitive polymer core. The inner polymer was then removed using two different techniques-thermal annealing and water dissolution-to compare their effects on the fiber morphology. Finally, a functional ZnO layer was deposited by thermal ALD with diethylzinc (DEZ) and DI H₂O. It was found that the polymer removal method c

SUBMITTER: Georgieva B 

PROVIDER: S-EPMC12843503 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature