Flexible Temperature Sensors

Liu, Ruping; He, Liang; Cao, Meijuan; Sun, Zhicheng; Zhu, Ruiqi; Li, Ye

doi:10.3389/fchem.2021.539678

Cited by 42 publications

(30 citation statements)

References 116 publications

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“…The traditional rigid temperature detectors can only meet some of the needs because of inflexibility, poor comfort, and low portability. Basically, there are four main types of flexible temperature sensors: resistance temperature detectors, thermocouple sensors, thermistor sensors, and thermochromic sensors [ 94 , 95 , 96 ]. Most self-powered temperature sensors are manufactured according to the Seebeck effect, which converts temperature into voltage signals and can be used for sensing and energy harvesting [ 97 , 98 , 99 , 100 ].…”

Section: Energy-storage-device-integrated Sensing Systemsmentioning

confidence: 99%

Recent Progress of Energy-Storage-Device-Integrated Sensing Systems

2023

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With the rapid prosperity of the Internet of things, intelligent human–machine interaction and health monitoring are becoming the focus of attention. Wireless sensing systems, especially self-powered sensing systems that can work continuously and sustainably for a long time without an external power supply have been successfully explored and developed. Yet, the system integrated by energy-harvester needs to be exposed to a specific energy source to drive the work, which provides limited application scenarios, low stability, and poor continuity. Integrating the energy storage unit and sensing unit into a single system may provide efficient ways to solve these above problems, promoting potential applications in portable and wearable electronics. In this review, we focus on recent advances in energy-storage-device-integrated sensing systems for wearable electronics, including tactile sensors, temperature sensors, chemical and biological sensors, and multifunctional sensing systems, because of their universal utilization in the next generation of smart personal electronics. Finally, the future perspectives of energy-storage-device-integrated sensing systems are discussed.

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Section: Energy-storage-device-integrated Sensing Systemsmentioning

confidence: 99%

Recent Progress of Energy-Storage-Device-Integrated Sensing Systems

2023

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“…Over the years, various well-performing single-function pressure sensors have been reported [ 4 , 5 , 6 , 7 , 8 , 9 , 10 ], which commonly employ piezoresistive materials whose working mechanism depends on variations in the geometric structure, tunneling resistance, or contact resistance, such as carbon nanotubes [ 11 ], carbon black nanoparticles [ 12 ], and MXene [ 13 , 14 ]. Nevertheless, as the key for efficient and compact electronic wearable devices, the realization of a multifunctional tactile sensor requires the integration of different types of materials with different physical properties, thereby enabling the ability to simultaneously respond to various stimuli such as pressure and temperature [ 15 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

A Pressure and Temperature Dual-Parameter Sensor Based on a Composite Material for Electronic Wearable Devices

Zhang

et al. 2023

Micromachines

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Wearable sensors integrating multiple functionalities are highly desirable in artificial wearable devices, which are of great significance in the field of biomedical research and for human–computer interactions. However, it is still a great challenge to simultaneously perceive multiple external stimuli such as pressure and temperature with one single sensor. Combining the piezoresistive effect with the negative temperature coefficient of resistance, in this paper, we report on a pressure–temperature dual-parameter sensor composed of a polydimethylsiloxane film, carbon nanotube sponge, and poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate). The proposed multifunctional sensor can stably monitor pressure signals with a high sensitivity of 16 kPa−1, has a range of up to 2.5 kPa, and also has a fast response time. Meanwhile, the sensor can also respond to temperature changes with an ultrahigh sensitivity rate of 0.84% °C−1 in the range of 20 °C to 80 °C. To validate the applicability of our sensor in practical environments, we conducted real-scene tests, which revealed its capability for monitoring = human motion signals while simultaneously sensing external temperature stimuli, reflecting its great application prospects for electronic wearable devices.

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“…Due to the recent development in artificial intelligence, it is important to realize dynamic flexible Pan Li, Zhihui Sun and Rui Wang contributed equally to this work interactive display by combining flexible color-changeable fiber technology [15] and intelligent interaction technology. Dynamic flexible interactive display may find applications in camouflage [16], wearable displays [17], vision sensors [18][19][20], temperature sensors [21], health detection, smart windows [22], tactile logic and many other fields [23].…”

Section: Introductionmentioning

confidence: 99%

Flexible thermochromic fabrics enabling dynamic colored display

Sun

Wang

et al. 2022

Front. Optoelectron.

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Color-changeable fibers can provide diverse functions for intelligent wearable devices such as novel information displays and human–machine interfaces when woven into fabric. This work develops a low-cost, effective, and scalable strategy to produce thermochromic fibers by wet spinning. Through a combination of different thermochromic microcapsules, flexible fibers with abundant and reversible color changes are obtained. These color changes can be clearly observed by the naked eye. It is also found that the fibers exhibit excellent color-changing stability even after 8000 thermal cycles. Moreover, the thermochromic fibers can be fabricated on a large scale and easily woven or implanted into various fabrics with good mechanical performance. Driven by their good mechanical and physical characteristics, applications of thermochromic fibers in dynamic colored display are demonstrated. Dynamic quick response (QR) code display and recognition are successfully realized with thermochromic fabrics. This work well confirms the potential applications of thermochromic fibers in smart textiles, wearable devices, flexible displays, and human–machine interfaces. Graphical Abstract

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Flexible Temperature Sensors

Cited by 42 publications

References 116 publications

Recent Progress of Energy-Storage-Device-Integrated Sensing Systems

Recent Progress of Energy-Storage-Device-Integrated Sensing Systems

A Pressure and Temperature Dual-Parameter Sensor Based on a Composite Material for Electronic Wearable Devices

Flexible thermochromic fabrics enabling dynamic colored display

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