Work

Rapid THz nondestructive inspection of medicine capsules

Year: 2026

Type: article

Abstract: In this study, we developed a screening tool for the rapid identification of defects in two-piece medicine capsules. We used THz time-of-flight (ToF) imaging by incorporating motorized rubber rollers, which allows rapid inspection of the capsules along their cylindrical surface. We obtained 3D images with the cross-sectional information, including the folded area. In particular, THz-ToF images are useful for identifying defects induced by moisture, alien substances, and holes in a nondestructive manner. The statistics for the layer thickness along capsule surfaces enable the rapid quality assessment of capsule quality, while the details on the types of defects can be determined by analyzing the 3D imaging data.

Source: Optics Express

DOI: 10.1364/oe.577130

Authors: T. H. Jeong, Hyeong-Ryeol Park, Y. H. Ahn

Institution: Ulsan National Institute of Science and Technology

Language: English

Topic: Terahertz technology and applications

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Good health and well-being

Open Access status: gold

Estimated APC paid: $2,270