红外与毫米波学报2025，Vol.44Issue(5)：720-725,6.DOI:10.11972/j.issn.1001-9014.2025.05.009
通过太赫兹近场成像技术揭示牙釉质脱矿的微观奥秘
Illuminating the microscopic mysteries of enamel demineralization through terahertz near-field imaging
摘要
Abstract
Enamel demineralization often occurs in the early stage of dental caries.Studying the microscopic mechanism of enamel demineralization is essential to prevent and treat dental caries.Terahertz(THz)technolo-gy,especially continuous wave(CW)THz near-field scanning microscopy(THz-SNOM)with its nanoscale reso-lution,can be promising in biomedical imaging.In addition,compared with traditional THz time-domain spec-troscopy(TDS),portable solid-state source as the emission has higher power and SNR,lower cost,and can ob-tain more precise imaging.In this study,we employ CW THz-SNOM to further break the resolution limitations of conventional THz imaging techniques and successfully achieve the near-field imaging of demineralized enamel at the nanoscale.We keenly observe that the near-field signal of the enamel significantly lowers as demineralization deepens,mainly due to the decrease in permittivity.This new approach offers valuable insights into the micro-scopic processes of enamel demineralization,laying the foundation for further research and treatment.关键词
脱矿牙釉质/近场扫描显微镜/连续波/太赫兹Key words
demineralized enamel/near-field scanning microscopy/continuous wave/terahertz引用本文复制引用
肖丰,张晓秋艳,程立,许星星,张天宇,唐福,胡涛,胡旻,刘盛纲..通过太赫兹近场成像技术揭示牙釉质脱矿的微观奥秘[J].红外与毫米波学报,2025,44(5):720-725,6.基金项目
Supported by the National Natural Science Foundation of China(61988102,62401113,92463308) （61988102,62401113,92463308）
