Rivadeneyra Almudena, Salmeron José F, Murru Fabio, Lapresta-Fernández Alejandro, Rodríguez Noel, Capitan-Vallvey Luis Fermín, Morales Diego P, Salinas-Castillo Alfonso
Department of Electronics and Computer Technology, University of Granada, 18010 Granada, Spain.
Department of Analytical Chemistry, University of Granada, 18010 Granada, Spain.
Nanomaterials (Basel). 2020 Dec 7;10(12):2446. doi: 10.3390/nano10122446.
This work presents an innovative application of carbon dots (Cdots) nanoparticles as sensing layer for relative humidity detection. The developed sensor is based on interdigitated capacitive electrodes screen printed on a flexible transparent polyethylene terephthalate (PET) film. Cdots are deposited on top of these electrodes. An exhaustive characterization of the nanoparticles has been conducted along with the fabrication of the sensor structure. The accompanied experiments give all the sensibility to the Cdots, showing its dependence with temperature and exciting frequency. To the best of our knowledge, this work paves the path to the use of these kind of nanoparticles in printed flexible capacitive sensors aimed to be employed in the continuously expanding Internet of Things ecosystem.
这项工作展示了碳点（Cdots）纳米颗粒作为用于相对湿度检测的传感层的创新应用。所开发的传感器基于印刷在柔性透明聚对苯二甲酸乙二酯（PET）薄膜上的叉指式电容电极。碳点沉积在这些电极之上。对纳米颗粒进行了详尽的表征，并制作了传感器结构。伴随的实验给出了碳点的所有灵敏度，显示了其对温度和激励频率的依赖性。据我们所知，这项工作为在旨在用于不断扩展的物联网生态系统的印刷柔性电容传感器中使用这类纳米颗粒铺平了道路。
