Exploring PEDOT:PSS interaction with hazardous gas molecules in microwave regime using organic microwave resonators

Moradpour, Maryam; Jain, Mandeep Chhajer; Tanguy, Nicolas R.; Colegrave, Keatin; Zarifi, Mohammad H.

doi:10.1016/j.cej.2023.141500

Cited by 17 publications

(6 citation statements)

References 53 publications

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Section: Discussionmentioning

confidence: 99%

Sensing Performance Enhancement Based on High-Frequency Polarization of Materials

Liang,

Yue,

Kim

et al. 2024

Acc. Mater. Res.

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Metrics & MoreArticle Recommendations * sı Supporting Information CONSPECTUS: In the realm of high-frequency sensing technology, the revolutionary integration and modification of novel materials such as metal−organic frameworks (MOFs), graphene, MXene, carbon nanotubes, and other advanced nanostructured materials have significantly propelled the field forward. These materials have not only broadened the scope of applications but have also markedly enhanced the capabilities of high-frequency sensors. Despite these advancements, a notable gap remains in fully understanding the relationship between the intricate structural properties of these materials and their impact on sensor performance, particularly in high-frequency contexts. Our comprehensive account seeks to bridge this gap by thoroughly analyzing the underpinning mechanisms of materials-based high-frequency sensor technology. We focus on the unique structural, electromagnetic, and surface properties of these innovative materials, emphasizing the customizable porosity and high surface area of MOFs and their influence on sensing capabilities. This Account highlights the importance of polarization theory and the strategic tailoring of materials such as MOFs, which have demonstrated potential in enhancing sensor specificity and sensitivity. Through detailed case studies and analytical explorations, we establish comprehensive guidelines for material selection in the design of high-frequency sensors. This process involves a careful consideration of target substances and specific application scenarios to ensure optimal material compatibility and performance. Additionally, we explore the significant impact of nano-and microlevel modifications in materials like MOFs on sensor characteristics, particularly in enhancing sensitivity, selectivity, and response time. The objective of our account is to elucidate the critical role that advanced materials play in the development of high-frequency sensing technology. We delve into the promising future of materials customization in highfrequency sensing, with a focus on materials that exhibit high electromagnetic properties and specialized surface characteristics. The adaptation of materials from 0D to 3D offers unique opportunities for microstructural modifications tailored to the molecular diameter of target materials, paving the way for optimal sensing system performance. This Account provides a clear and comprehensive perspective on the latest advancements and future research directions in this field. We aim to guide researchers and industry practitioners in selecting and engineering materials for superior performance in high-frequency sensing applications. By highlighting innovative research strategies and contributing to the continuous evolution of high-frequency sensing technology, our work opens new avenues for applications such as wireless transmission systems and precision biomedical monitoring. This endeavor not only pushes the boundaries of current sensing capabilities but also sets the stage for groundbreaking de...

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Section: Discussionmentioning

confidence: 99%

Sensing Performance Enhancement Based on High-Frequency Polarization of Materials

Liang,

Yue,

Kim

et al. 2024

Acc. Mater. Res.

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“…The microstructure of the PEDOT:PSS films can be typically described as the conducting PEDOT particles embedded in the insulating PSS matrix [38][39][40][41] to analyze the light interaction with PEDOT:PSS films. The effective permittivity and complex refractive index dispersion curves of the PSS polymer were extracted from the reflectance and transmittance data with the consideration of Kramers-Kronig relations, [42] as shown in Figure S5 (Supporting Information), which were verified on the glass substrate (Figure S5c-e, Supporting Information).…”

Section: Effective Optical Model Analysismentioning

confidence: 99%

Scalable and Tunable PEDOT:PSS Emitter for Thermal Camouflage

Wu,

Wang,

Hou

et al. 2023

Advanced Optical Materials

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Materials with tunable infrared emissivity are scarce but significant for thermal camouflage. In this study, the optical properties of the conjugated polymer PEDOT:PSS are investigated, and it is found that its infrared emissivity can be facilely modulated by regulating the PSS doping level in PEDOT:PSS, which enables superior thermal camouflage across broad application scenarios with different objects and background temperatures. An effective model with PEDOT particles embedded in the PSS matrix is proposed to elucidate the infrared optical response of PEDOT:PSS thick films. The PEDOT molecules possess strong electromagnetic shielding in the middle‐infrared wavelength range, contributing largely to the metallic infrared optical performance. Moreover, the metallic infrared optical properties of PEDOT:PSS become weaker through increasing the PSS doping level in PEDOT:PSS, resulting in an incredibly large infrared radiation modulation from IR “white” (high reflectivity) to IR “black” (large emissivity ε). Furthermore, the perfect thermal camouflage matched with the environment (εBG ≈75%) can be achieved for the PEDOT:PSS with a large PSS doping level across a wide temperature ranges from 35 to 60 °C. This work not only reveals the IR optical characteristics of PEDOT:PSS via the effective model but also paves the way for scalable thermal camouflage compatible with various application environments.

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“…dielectric changes due to soil moisture variation or ice accumulation 21 , 22 , or vital signs using wearable antennas 23 . Moreover, RF sensor readout has been widely used based on additional functional sensors including 2D materials 24 , conductive polymers 25 , 26 , inorganic sensitive materials 27 , lumped sensors 28 , and even bacterial cultures 29 . For gas sensing, it was shown that reading the response of resistive sensors at kHz frequencies can improve their linearity and sensitivity 30 .…”

Section: Introductionmentioning

confidence: 99%

Wide-range soft anisotropic thermistor with a direct wireless radio frequency interface

Wagih,

Shi,

et al. 2024

Nat Commun

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Temperature sensors are one of the most fundamental sensors and are found in industrial, environmental, and biomedical applications. The traditional approach of reading the resistive response of Positive Temperature Coefficient thermistors at DC hindered their adoption as wide-range temperature sensors. Here, we present a large-area thermistor, based on a flexible and stretchable short carbon fibre incorporated Polydimethylsiloxane composite, enabled by a radio frequency sensing interface. The radio frequency readout overcomes the decades-old sensing range limit of thermistors. The composite exhibits a resistance sensitivity over 1000 °C−1, while maintaining stability against bending (20,000 cycles) and stretching (1000 cycles). Leveraging its large-area processing, the anisotropic composite is used as a substrate for sub-6 GHz radio frequency components, where the thermistor-based microwave resonators achieve a wide temperature sensing range (30 to 205 °C) compared to reported flexible temperature sensors, and high sensitivity (3.2 MHz/°C) compared to radio frequency temperature sensors. Wireless sensing is demonstrated using a microstrip patch antenna based on a thermistor substrate, and a battery-less radio frequency identification tag. This radio frequency-based sensor readout technique could enable functional materials to be directly integrated in wireless sensing applications.

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Exploring PEDOT:PSS interaction with hazardous gas molecules in microwave regime using organic microwave resonators

Cited by 17 publications

References 53 publications

Sensing Performance Enhancement Based on High-Frequency Polarization of Materials

Sensing Performance Enhancement Based on High-Frequency Polarization of Materials

Scalable and Tunable PEDOT:PSS Emitter for Thermal Camouflage

Wide-range soft anisotropic thermistor with a direct wireless radio frequency interface

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