Laser Scanning System for Hydrophilicity Mapping on Curved Surfaces
Journal
IEEE Transactions on Instrumentation and Measurement
Journal Volume
74
Start Page
1
End Page
7
ISSN
0018-9456
1557-9662
Date Issued
2025
Author(s)
Abstract
The contact angle (CA) measurement is the most common technique for examining surface hydrophilicity. This technique usually involves a camera to capture the side view of a droplet. However, it often overlooks the distribution of hydrophilicity over the entire sample surface. In this study, a novel laser scanning technique was developed to obtain hydrophilicity maps of a curved sample surface with a maximum area of 175 × 250 mm. Moreover, a rotational tracking mechanism enabled the system to measure the curved surface with a tilt angle range of ±15◦. The experiments yielded hydrophilicity maps of a polyimide film and glass slides. The results indicated that the developed laser scanning system was able to accurately determine the quantitative CA, height, and tilt angle images on the curved sample surface.
Subjects
Curved surface
hydrophilicity measurement
laser scanning
SDGs
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Type
journal article