Kim, H S; Liu, C H; Andy, A S; Degl’Innocenti, R; Alomainy, A; Ahn, Y H; Naftaly, M; Cunningham, J; Park, S J (2025) Enhanced Sensitivity of 3D-printed Terahertz Metamaterials with a Vertical Gap Structure for Single Microplastic Particle Detection. In: 2025 50th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 17-22 August 2025, Helsinki, Finland.

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Abstract

We demonstrate detection of single microplastic particle using 3D-printed terahertz metamaterials with a vertical gap structure. These 3D metamaterials show higher dielectric sensitivity and enhanced electric field concentration compared to conventional 2D and 3D metamaterials without a vertical gap. Simulation results show that these 3D metamaterials with a vertical gap exhibit the largest resonant frequency shift, indicating their superior detection performance.

Item Type:	Conference or Workshop Item (Paper)
Keywords:	terahertz
Subjects:	Optical Radiation and Photonics > Materials and Appearance
Divisions:	Electromagnetic & Electrochemical Technologies
Publisher:	IEEE
Identification number/DOI:	10.1109/IRMMW-THz61557.2025.11319606
Last Modified:	23 Mar 2026 14:04
URI:	https://eprintspublications.npl.co.uk/id/eprint/10344