Improved Performance of Zinc Oxide Thin Film Transistor Pressure Sensors and a Demonstration of a Commercial Chip Compatibility with the New Force Sensing Technology

Vishniakou, Siarhei; Chen, Renjie; Ro, Yun Goo; Brennan, Christopher J.; Levy, Cooper S.; Yu, Edward T.; Dayeh, Shadi A.

doi:10.1002/admt.201700279

Cited by 49 publications

(37 citation statements)

References 20 publications

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“…F, Structure of the thin‐film transistor‐based pressure sensor and the constructed sensing array. Reproduced with permission from Reference 90, Copyright 2018, Wiley‐VCH. G, Pressure sensor assembled onto the wrist and breast for pulse detection and respiration monitoring.…”

Section: General Wearable Electronics and Wearable Photonicsmentioning

confidence: 99%

“…It is considered as a new pressure sensing technique that enables the use of miniature sensing elements with high sensitivity and large‐area scalability in production. A zinc oxide thin‐film transistor functioning as both a transistor and a force sensor with the same device structure is presented in Figure 1F 90 . Furthermore, a sensor array with the force‐sensing transistors is fabricated without additional addressing elements.…”

Section: General Wearable Electronics and Wearable Photonicsmentioning

confidence: 99%

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Progress in wearable electronics/photonics—Moving toward the era of artificial intelligence and internet of things

Shi

Dong

et al. 2020

InfoMat

457

233

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The past few years have witnessed the significant impacts of wearable electronics/photonics on various aspects of our daily life, for example, healthcare monitoring and treatment, ambient monitoring, soft robotics, prosthetics, flexible display, communication, human‐machine interactions, and so on. According to the development in recent years, the next‐generation wearable electronics and photonics are advancing rapidly toward the era of artificial intelligence (AI) and internet of things (IoT), to achieve a higher level of comfort, convenience, connection, and intelligence. Herein, this review provides an opportune overview of the recent progress in wearable electronics, photonics, and systems, in terms of emerging materials, transducing mechanisms, structural configurations, applications, and their further integration with other technologies. First, development of general wearable electronics and photonics is summarized for the applications of physical sensing, chemical sensing, human‐machine interaction, display, communication, and so on. Then self‐sustainable wearable electronics/photonics and systems are discussed based on system integration with energy harvesting and storage technologies. Next, technology fusion of wearable systems and AI is reviewed, showing the emergence and rapid development of intelligent/smart systems. In the last section of this review, perspectives about the future development trends of the next‐generation wearable electronics/photonics are provided, that is, toward multifunctional, self‐sustainable, and intelligent wearable systems in the AI/IoT era.

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Section: General Wearable Electronics and Wearable Photonicsmentioning

confidence: 99%

Section: General Wearable Electronics and Wearable Photonicsmentioning

confidence: 99%

Progress in wearable electronics/photonics—Moving toward the era of artificial intelligence and internet of things

Shi

Dong

et al. 2020

InfoMat

457

233

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“…At the same time, aiming to figure out problems of safety issues and limited working time, wind‐driven TENG is employed to take place of maintaining power device as a power supply unit to manufacture self‐powered devices. Portable and wearable pressure sensors are of great concern for various daily applications, such as electronic skin, flexible touchscreens, medical devices and energy harvesting devices . Hitherto, the generally working mechanism of pressure sensor can be classified as force‐induced changes in piezoelectricity, triboelectricity, capacitance, and resistivity .…”

Section: Introductionmentioning

confidence: 99%

Polyimide/Graphene Nanocomposite Foam‐Based Wind‐Driven Triboelectric Nanogenerator for Self‐Powered Pressure Sensor

Zhao

Chen

Wei

et al. 2019

Adv Materials Technologies

100

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of TENG and wind energy, wind-driven TENG could harvest wind mechanical energy and convert it into available electric power by the mechanism of triboelectrification and electrostatic induction. [9,10] At the same time, aiming to figure out problems of safety issues and limited working time, wind-driven TENG is employed to take place of maintaining power device as a power supply unit to manufacture self-powered devices. Portable and wearable pressure sensors are of great concern for various daily applications, such as electronic skin, [11][12][13][14][15] flexible touchscreens, [16,17] medical devices [18,19] and energy harvesting devices. [20,21] Hitherto, the generally working mechanism of pressure sensor can be classified as forceinduced changes in piezoelectricity, [22,23] triboelectricity, [24,25] capacitance, [26,27] and resistivity. [28,29] Taking advantages of easy fabrication, simple structure, and a high sensitivity at low pressures (<5 kPa), resistive pressure sensors reveal great development potential and plenty of promising applications. [30] However, an external energy supply unit, such as various batteries, is essential to be used to drive pressure sensor, causing the problems of limited working time and environmental pollution. Thus, there is a strong demand for exploring a highly sensitive, self-powered, portable pressure sensor.Nowadays, a great number of functional materials, for instance, functional polymers, [31,32] carbon nanotubes, [33,34] and graphene, [30,35] have been adopted to design and fabricate Nowadays, aiming to fight against environmental pollution and energy crisis, a great amount of effort has been performed on self-powered devices. Herein, assembling a wind-driven triboelectric nanogenerator (TENG) and a pressure sensitive elastic polyimide (PI)/reduced graphene oxide (rGO) foam together, a self-powered pressure sensor system has been designed and investigated. Employing Ag nanoparticles and nylon film as electrode and vibration membrane, the TENG can generate desirable output. Meanwhile, the PI/rGO foam acts as the pressure sensitive unit. Integrating a bulk of PI/rGO foam (14 mm × 14 mm × 30 mm), the TENG could generate output voltage and current up to 130 V and 7.5 µA with an effective working area of 100 mm × 15 mm. Additionally, the as-fabricated device presents various stress sensing scopes and sensitivities, when different heights of foams are integrated on the TENG. The self-powered pressure sensor achieves a great combination between new clean energy resources and traditional pressure sensor. Pressure SensorThe ORCID identification number(s) for the author(s) of this article can be found under https://doi.

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“…Conductive materials are an essential part of the sensor for constructing conductive pathways . Traditional conductive materials are mostly made of metal and semiconductor materials, although they are stable in performance, and widely used, the GF is only 2 and they have shortcoming of lacking softness . What's more, the nanomaterials have disadvantages of poor mechanical stability, especially after multiple folding or bending cycles.…”

Section: Introductionmentioning

confidence: 99%

Highly Sensitive and Flexible Pressure Sensor Prepared by Simple Printing Used for Micro Motion Detection

Wang

2019

Adv Materials Inter

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Smart wearable flexible sensors with high sensitivity and stability are still challenging nowadays when used for human motion detection, personal health monitoring, or artificial electronic skins. Here, a sensor assembled in a face‐to‐face manner based on fabric is proposed, firstly polyaniline (PANI)/nanonickel (Ni NPs)/COOH‐functionalized MWCNTs (COOH‐MWCNTs) conductive paste is prepared and printed on the cotton fabric. Then the printed fabric is assembled to be a flexible sensor which has double conductive layers. According to the analysis of the scanning electron microscopy, energy‐dispersive spectroscopy, X‐ray diffraction, and Fourier transform infrared spectroscopy, the synergistic performance of PANI, Ni NPs, and COOH‐MWCNTs is demonstrated. When the pressure is 0–0.1 kPa, gauge factor (GF) is 12.96 kPa−1, and when the pressure is 0.1–1 kPa, the GF is 1.33 kPa−1, indicating superior sensitivity of the sensor compared to traditional textile‐based sensors. It also displays quick response time of 0.2 s and recovery time of 0.3 s. The as‐prepared sensor can effectively monitor human micro motions like face, eye, and fingers movements, and it can also transmit electrical signals agilely by indirect contact. Moreover, a large‐area sensor spatial array is fabricated, and the test indicates the sensor can recognize spatial response.

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Improved Performance of Zinc Oxide Thin Film Transistor Pressure Sensors and a Demonstration of a Commercial Chip Compatibility with the New Force Sensing Technology

Cited by 49 publications

References 20 publications

Progress in wearable electronics/photonics—Moving toward the era of artificial intelligence and internet of things

Progress in wearable electronics/photonics—Moving toward the era of artificial intelligence and internet of things

Polyimide/Graphene Nanocomposite Foam‐Based Wind‐Driven Triboelectric Nanogenerator for Self‐Powered Pressure Sensor

Highly Sensitive and Flexible Pressure Sensor Prepared by Simple Printing Used for Micro Motion Detection

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