采用异质结构电介质的比色法布里-佩罗传感器用于湿度监测

IF 10.7 2区 材料科学 Q1 CHEMISTRY, PHYSICAL
Zhihuan Li, Lejie Tian, Wei Wu, Li Feng, Bakyt Khaniyev, Yerzhan Mukhametkarimov, Margulan Ibraimov, Feng Zhou, Weimin Liu, Jianxi Liu
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引用次数: 0

摘要

通过在金属-绝缘体-金属(MIM)谐振器中使用异质结构电介质薄膜,提出了一种高亮度全彩色比色湿度传感器。在谐振器的绝缘层金属有机框架(MOFs)薄膜(MOFs-聚合物)上接枝了一种湿度响应聚合物。通过控制聚合物的厚度,实现了反射颜色的可编程调节,亚波长尺度的光-物质相互作用有限差分时域模拟证明了反射波长与谐振器介电层厚度的关系。在跟踪湿度过程中,由于刺激响应聚合物的膨胀,实现了生动的全彩变化。在跟踪 H2O/ 甲醇混合物中的痕量 H2O 时,实现了超快响应(≈0.75 秒),比纯聚合物基 MIM 谐振器快≈104 秒。同时,由于多孔 MOFs 膜有利于外部刺激的预浓缩,并提高了谐振器的检测灵敏度,因此研究观察到了明显的光谱重移。此外,还利用光罩技术在 MIM 谐振器上设计了双通道防伪复用成像。通过设计金/MOFs-聚合物/金的湿度可调像素和金/MOFs/金的湿度无效像素,在 MIM 谐振器上实现了防伪标签的图案编码。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Colorimetric Fabry-Pérot Sensor with Hetero-Structured Dielectric for Humidity Monitoring.

A full-color colorimetric humidity sensor with high brightness is proposed by using a hetero-structured dielectric film in a metal-insulator-metal (MIM) resonator. A humidity-responsive polymer is designed to graft on top of a metal-organic frameworks (MOFs) thin film (MOFs-Polymer) as insulator layer in the resonator. Programmable tuning of reflected color is achieved by controlling the polymer thicknesses, and finite difference time domain simulation of light-matter interactions at subwavelength scales proves the dependence of the reflected wavelength on dielectric layer thickness of the resonator. Vivid full-color changing is realized during tracking humidity process due to swelling of the stimuli-responsive polymer. Ultrafast response (≈0.75 s) is achieved for tracking trace H2O from H2O/methanol mixture, which is ≈104 faster than that of the pure polymer-based MIM resonator. Meanwhile, the study observes significant spectral redshift because the porous MOFs film facilitates the preconcentration of external stimulus and improves the detection sensitivity of the resonator. Further, double-channel anti-counterfeiting multiplexing imaging is devised on the MIM resonator by photomask technology. Patterned encoding for security label is achieved on the MIM resonator by engineering humidity-tunable pixels of Au/MOFs-Polymer/Au and humidity-invalid pixels of Au/MOFs/Au.

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来源期刊
Small Methods
Small Methods Materials Science-General Materials Science
CiteScore
17.40
自引率
1.60%
发文量
347
期刊介绍: Small Methods is a multidisciplinary journal that publishes groundbreaking research on methods relevant to nano- and microscale research. It welcomes contributions from the fields of materials science, biomedical science, chemistry, and physics, showcasing the latest advancements in experimental techniques. With a notable 2022 Impact Factor of 12.4 (Journal Citation Reports, Clarivate Analytics, 2023), Small Methods is recognized for its significant impact on the scientific community. The online ISSN for Small Methods is 2366-9608.
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