Surface Morphology Analysis of Metallic Structures Formed on Flexible Textile Composite Substrates

Area of Science:

• Materials Science
• Surface Metrology
• Textile Engineering

Background:

• Thin metallic layers on flexible textile substrates are crucial for wearable electronics and textronics.
• Accurate measurement of surface morphology is essential for predicting performance characteristics like wetting behavior and durability.
• Traditional contact methods can potentially damage delicate nanometer-scale surface structures.

Purpose of the Study:

• To compare the effectiveness of Optical Coherent Tomography (OCT) against traditional profilometry for measuring surface morphological features of thin metallic layers on textiles.
• To evaluate the suitability of OCT for non-destructive analysis of nanostructured surfaces.
• To highlight the importance of accurate surface profiling for functional textile applications.

Main Methods:

• Comparison of micro-scale measurements using Optical Coherent Tomography (OCT) and a contact profilometer.
• Application of a silver layer (hundreds of nanometers thick) onto a Cordura textile composite.
• Development and utilization of a dedicated algorithm for three-dimensional surface image analysis with OCT.

Main Results:

• Optical Coherent Tomography (OCT) demonstrated superiority over the contact profilometer method for measuring surface morphology.
• The contactless nature of OCT prevented any alteration to the delicate surface structure of the thin metallic layer.
• OCT provided accurate three-dimensional surface imaging, essential for detailed morphological assessment.

Conclusions:

• OCT is a highly effective, non-destructive technique for characterizing the surface topography of thin metallic films on flexible substrates.
• The findings support the use of OCT for quality control and performance prediction in the development of smart textiles and wearable electronic components.
• Accurate surface metrology using OCT is vital for optimizing the functionality and durability of textronic systems.