Ultrasensitive and reversible room-temperature resistive humidity sensor based on layered two-dimensional titanium carbide

Zhang, Changgeng; Zhang, Yan Ming; Cao, Kaixiang; Guo, Zehao; Han, Yaqin; Hu, Wei; Wu, Yingjie; She, Yin; He, Yong

doi:10.1016/j.ceramint.2020.10.229

Cited by 36 publications

(19 citation statements)

References 51 publications

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“…In addition, CA in the MC film created additional ion, which significantly reduced the resistance of MC film sensor at high RH (Figure 3d). 27,42 These results indicate that we fabricated a durable, sensitive, and reusable MC film sensor for humidity and breath monitoring.…”

Section: ■ Results and Discussionmentioning

confidence: 75%

A High-Wet-Strength Biofilm for Readable and Highly Sensitive Humidity Sensors

Zhang

Yang

et al. 2021

Nano Lett.

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Low-cost and flexible biofilm humidity sensors with good wet strength are crucial for humidity detection. However, it remains a great challenge to integrate good reversibility, rapid humidity response, and robust humid mechanical strength in one sensor. In this respect, we report a facile method to prepare a sustainable biofilm (named MC film) from sisal cellulose microcrystals (MSF-g-COOH) and citric acid (CA). After crosslinking with CA, the MC film exhibits excellent wet strength and rapid humidity response. More importantly, MC film can be used over a wide temperature range with excellent durability and reversibility for humidity detection. A highly sensitive humidity sensor fabricated from the MC film exhibits high reversibility and excellent water resistance and can be applied in humidity and personalized breath health monitoring. Our work fills the gap between biomaterial design and high-performance sensing devices.

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Section: ■ Results and Discussionmentioning

confidence: 75%

A High-Wet-Strength Biofilm for Readable and Highly Sensitive Humidity Sensors

Zhang

Yang

et al. 2021

Nano Lett.

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“…The surface functional group analysis of Ti 3 C 2 T x suggests that the ultra-fast humidity response and high sensitivity result from the high coverage rate of the hydroxyl group on the Ti 3 C 2 T x surface. Condensation and volatilization of water vapor molecules in accordion-like micro-structures and hierarchical nanostructures of Ti 3 C 2 T x lead to changes in surface electrostatic field, resulting in resistance changes of the sensor devices as shown in Figure 3 [92].…”

Section: Resistivementioning

confidence: 99%

Recent Sensing Technologies of Imperceptible Water in Atmosphere

Mekawy

Kawakita

2022

Chemosensors

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Accurate detection and quantitative evaluation of environmental water in vapor and liquids state expressed as humidity and precipitation play key roles in industrial and scientific applications. However, the development of supporting tools and techniques remains a challenge. Although optical methods such as IR and LASER could detect environmental water in the air, their apparatus is relatively huge. Alternatively, solid detection field systems (SDFSs) could recently lead to a revolution in device downsizing and sensing abilities via advanced research, mainly for materials technology. Herein, we present an overview of several SDFS based sensing categories and their core materials mainly used to detect water in atmosphere, either in the vapor or liquid phase. We considered the governing mechanism in the detection process, such as adsorption/desorption, condensation/evaporation for the vapor phase, and surface attach/detach for the liquid phase. Sensing categories such as optical, chilled mirror, resistive, capacitive, gravimetric sensors were reviewed together with their designated tools such as acoustic wave, quartz crystal microbalance, IDT, and many others, giving typical examples of daily based real scientific applications.

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“…Among these, MXenes are preferred for such applications due to their hierarchical hydroxyl-riched nano-structure. 13 A decade after the first report, the family of two-dimensional (2D) carbides and nitrides ( i.e. , MXenes) have exhibited excellent electrical, optical, and mechanical properties, which have led to wide applications ranging from pressure sensing, 14–16 energy storage, 17–19 and data storage 20 to electrochromism 21 and electromagnetic interference shielding.…”

Section: Introductionmentioning

confidence: 99%