A Highly Sensitive and Reliable Humidity Sensor for Low-Water-Pressure Detection in a Vacuum Environment via PEDOT:PSS Films.

IF 9.1 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2025-10-01 DOI:10.1021/acs.nanolett.5c03201

Ping Guo,Xuyang An,Xinxin He,Yinhua Hu,Jiatai Chen,Guoyun Zhou,Jinbiao Fan,Weiwei Zhang,Binbin Zhang,Shengyuan Jiang,Jia Zhang

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Abstract

Exploring extraterrestrial water resources has far-reaching significance for future human space resource utilization and base construction. Consequently, the development of effective sensing technologies for in situ water detection is a critical endeavor. This work presents a highly sensitive and reliable water molecules sensor based on poly(3,4-ethylenedioxythiophene)/poly(styrenesulfonate) (PEDOT:PSS) films. The device demonstrates exceptional performance under high-vacuum conditions (1.0 × 10-3 Pa), achieving an extremely low detection limit of 0.02 Pa (148 μg/mL) and exhibiting outstanding reversibility, repeatability, and long-term stability. Furthermore, the sensor successfully underwent rigorous survivability tests designed to simulate the harsh conditions of space, showing no significant performance degradation. Meanwhile, through in situ film surface/thickness and spectroscopic analyses, a deeper understanding of the hydrogen-bond-based interactions between water molecules and PEDOT:PSS has been elucidated. This research provides valuable new insights and a promising platform for the development of advanced sensors aimed at detecting water on other planetary bodies.

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一种高灵敏度和可靠的湿度传感器，用于在真空环境中通过PEDOT:PSS薄膜进行低水压检测。

探索地外水资源对未来人类空间资源利用和基地建设具有深远意义。因此，开发有效的原位水探测传感技术是一项至关重要的工作。本工作提出了一种基于聚（3,4-乙烯二氧噻吩）/聚（苯乙烯磺酸盐）（PEDOT:PSS）薄膜的高灵敏度和可靠的水分子传感器。该装置在高真空条件下（1.0 × 10-3 Pa）表现出优异的性能，检测限极低，为0.02 Pa (148 μg/mL)，具有出色的可逆性、重复性和长期稳定性。此外，该传感器成功地通过了旨在模拟太空恶劣条件的严格生存能力测试，没有显示出明显的性能下降。同时，通过原位膜表面/厚度和光谱分析，更深入地了解了水分子与PEDOT:PSS之间的氢键相互作用。这项研究为开发先进的传感器提供了有价值的新见解和一个有前途的平台，旨在探测其他行星上的水。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nano Letters 工程技术-材料科学：综合

CiteScore

16.80

自引率

2.80%

发文量

1182

审稿时长

1.4 months

期刊介绍： Nano Letters serves as a dynamic platform for promptly disseminating original results in fundamental, applied, and emerging research across all facets of nanoscience and nanotechnology. A pivotal criterion for inclusion within Nano Letters is the convergence of at least two different areas or disciplines, ensuring a rich interdisciplinary scope. The journal is dedicated to fostering exploration in diverse areas, including: - Experimental and theoretical findings on physical, chemical, and biological phenomena at the nanoscale - Synthesis, characterization, and processing of organic, inorganic, polymer, and hybrid nanomaterials through physical, chemical, and biological methodologies - Modeling and simulation of synthetic, assembly, and interaction processes - Realization of integrated nanostructures and nano-engineered devices exhibiting advanced performance - Applications of nanoscale materials in living and environmental systems Nano Letters is committed to advancing and showcasing groundbreaking research that intersects various domains, fostering innovation and collaboration in the ever-evolving field of nanoscience and nanotechnology.