Cho, Yun-haeng Hong, Kootak Seo, Jung Hwan Chung, Jae Han Lee, Jinho Nam, Sang-hyeon Lee, Sunwoo Lee, Jeong-o Ahn, Changui Kim, Hyojung Han, Jae Hyun Kim, Gyu-li Ro, Seong-jun Hwang, Jun Yeon Gim, Hyeongyu Park, Zion Lee, Chil-hyoung Kim, Dong-su Lee, Kwangjae Shim, Young-seok Suh, Jun Min Cho, Donghwi 2025-11-26T09:05:20Z 2025-11-26T09:05:20Z 2025-11-26 2026-01 https://pubs.kist.re.kr/handle/201004/153655 Conventional sensing platforms for plant health monitoring are often limited by high operating temperatures, rigid substrates, and poor compatibility with ambient, power-constrained, or biologically sensitive environments. These limitations hinder their integration into emerging platforms such as smart agriculture and plant-interfaced electronics, where mechanical flexibility, energy efficiency, and low thermal budgets are essential. This paper reports a scalable, thermally passive NO2 sensor based on light-activated 3D TiO2 nanoarchitectures. Fabricated via sequential glancing angle deposition, the highly ordered porous nanoarchitectures exhibit tunable broadband light scattering and defect-mediated sub-bandgap activation under ambient light. Integrated with a wireless microcontroller and mobile application, the sensor enables autonomous NO2 monitoring in real-world conditions. Field deployment on Mentha suaveolens plants demonstrates real-time tracking of gas-induced physiological stress, establishing practical ecological relevance. This platform overcomes the key limitations of conventional sensors, offering a structurally tunable, spectrally adaptive, and fabrication-scalable solution for light-powered, bio-integrated environmental monitoring. English Wiley-VCH Verlag Scalable Photoactive NO2-Sensing Framework for Plant Health Monitoring Article 10.1002/advs.202518368 1 Advanced Science, v.13, no.5 Advanced Science 13 5 Y scie 001609211500001 2-s2.0-105021237987 Chemistry, Multidisciplinary Nanoscience & Nanotechnology Materials Science, Multidisciplinary Chemistry Science & Technology - Other Topics Materials Science Article SENSOR NANOPARTICLES POLLUTION DIOXIDE 3D nanoarchitectures NO2 sensors photoactivation plant monitoring room temperature TiO2 wireless microcontrollers