Water-resistive humidity sensor prepared from new polyelectrolyte containing both photo-curable 4-styrylpyridinium function and thiol anchor

Yun, Sang-Woo; Cha, Jae‐Ryung; Gong, Myoung‐Seon

doi:10.1016/j.snb.2014.06.065

Cited by 10 publications

(3 citation statements)

References 34 publications

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“…The long-term stability test of each CNT@CPM flexible sensor was conducted by measuring the resistance once every 3 d for over 1 month while sensor was maintained at 50, 70, and 90%RH. The hysteresis extracted the average of the relative humidity differences (i.e., the average of the x-axis differences) between the adsorption and desorption graph at the same resistance value in range of 30–100%RH [ 25 ]. These average values compared in steps of 10% RH for each sample.…”

Section: Methodsmentioning

confidence: 99%

Wearable CNTs-based humidity sensors with high sensitivity and flexibility for real-time multiple respiratory monitoring

et al. 2022

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Sensors, such as optical, chemical, and electrical sensors, play an important role in our lives. While these sensors already have widespread applications, such as humidity sensors, most are generally incompatible with flexible/inactive substrates and rely on conventional hard materials and complex manufacturing processes. To overcome this, we develop a CNT-based, low-resistance, and flexible humidity sensor. The core–shell structured CNT@CPM is prepared with Chit and PAMAM to achieve reliability, accuracy, consistency, and durability, resulting in a highly sensitive humidity sensor. The average response/recovery time of optimized sensor is only less than 20 s, with high sensitivity, consistent responsiveness, good linearity according to humidity rates, and low hysteresis (− 0.29 to 0.30 %RH). Moreover, it is highly reliable for long-term (at least 1 month), repeated bending (over 15,000 times), and provides accurate humidity measurement results. We apply the sensor to smart-wear, such as masks, that could conduct multi-respiratory monitoring in real-time through automatic ventilation systems. Several multi-respiratory monitoring results demonstrate its high responsiveness (less than 1.2 s) and consistent performance, indicating highly desirable for healthcare monitoring. Finally, these automatic ventilation systems paired with flexible sensors and applied to smart-wear can not only provide comfort but also enable stable and accurate healthcare in all environments.

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Section: Methodsmentioning

confidence: 99%

Wearable CNTs-based humidity sensors with high sensitivity and flexibility for real-time multiple respiratory monitoring

et al. 2022

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“…When the external clock circuit is adopted, the pin is used as the driving end of the single chip microcomputer used in this paper. The pins on the HMO MCU must be grounded [22,23] and connected to the external crystal according to xtal2. In the internal structure of MCU, the output frequency conversion amplifier oscillator is obtained, and the frequency of crystal oscillator is the frequency of oscillator.…”

Section: Pin Functionmentioning

confidence: 99%

Temperature and Humidity Control System of Vegetable Greenhouse Based on Single Chip Computer

2022

DPS

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It changes all year round. In the north, in order to satisfy the public's desire to eat fresh vegetables in winter, vegetable greenhouses came into being. With the rapid development of society, people have put forward higher and higher requirements for the quality of vegetables. The temperature and humidity of the greenhouse have a great influence on the quality of vegetables. Therefore, in order to ensure the quality of vegetables, the temperature and humidity of the greenhouse must be kept within the range most suitable for the growth of vegetables. Therefore, the design of the temperature, room temperature and humidity control system are particularly important. The temperature and humidity control system based on single-chip microcomputer designed in this paper monitors and tempers the greenhouse temperature in real time through the DS18B20 and DHT11 temperature and humidity sensors, respectively, and displays the monitoring results on the liquid crystal display. The single chip microcomputer adjusts the greenhouse temperature and humidity through the monitoring results In order to keep the temperature and humidity of the greenhouse in a constant range. The temperature control system in this paper can achieve a measurement accuracy of ± 0.3 ℃ and a display accuracy of 0.1 ℃. It can also manually adjust the temperature and humidity within a certain range to suit the growth conditions of different vegetables. The results show that the temperature measurement system has the characteristics of high accuracy, high sensitivity, stable operation and so on, which meets the performance requirements of the design. It is a reliable digital temperature measurement control system.

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“…Additionally, designing a high-performance humidity sensor must meet many requirements, including linear response, high sensitivity, fast response time, chemical and physical stability, wide operating range of humidity and low cost. Materials that have been studied for this purpose include polymers and ceramics, which have their own merits and specific conditions of application [26][27][28][29]. This work describes the humidity-sensing characteristics of diamine-functionalized GO films that was …”

Section: Introductionmentioning

confidence: 99%

Flexibility and electrical and humidity-sensing properties of diamine-functionalized graphene oxide films

2015

Sensors and Actuators B: Chemical

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Water-resistive humidity sensor prepared from new polyelectrolyte containing both photo-curable 4-styrylpyridinium function and thiol anchor

Cited by 10 publications

References 34 publications

Wearable CNTs-based humidity sensors with high sensitivity and flexibility for real-time multiple respiratory monitoring

Wearable CNTs-based humidity sensors with high sensitivity and flexibility for real-time multiple respiratory monitoring

Temperature and Humidity Control System of Vegetable Greenhouse Based on Single Chip Computer

Flexibility and electrical and humidity-sensing properties of diamine-functionalized graphene oxide films

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