Atomic layer deposition (ALD) at 100°C provides a conformal coating on woven cotton with a tortuous and complex surfaces. The woven structures are completely preserved and replicated with thin coating of Al 2O 3, even after removing the cotton templates. The replicated woven structures enable direct mass analysis of the cotton coating. Quantitative analysis reveals that the self-limiting reaction of ALD is ensured, even on tortuous cotton surfaces, except for early growth cycles. This unique feature of ALD assures conformal coating onto three-dimensional (3D) networks of cotton. The results demonstrate the possibility of a non-local methodology for evaluating the thickness of a coating on 3D objects at various stages of growth.
ASJC Scopus subject areas
- Surfaces and Interfaces
- Process Chemistry and Technology