A low-cost flexible electrochemical accelerometer using graphene-integrated microchannel

Accelerometers are among the most mature sensor technologies with a broad range of applications in multiple fields and industries. They represent the most widely used microelectromechanical system (MEMS) devices with excellent and reliable performance. MEMS acceleration sensors established dominance mainly in navigation and control applications. In recent years, however, recent technologies and materials have emerged that introduce novel sensing mechanisms, improve performance, enable customization, reduce cost, and reduce fabrication complexity. Herein, the recent advances in accelerometers based on MEMS and recent emerging technologies are reviewed. This work provides a comprehensive review of accelerometers' sensing mechanisms and the main characteristics and features of each type of sensor, material, and fabrication strategies used to fabricate them. From the aspect of sensor application, this work focuses on reviewing applications that demonstrate the use of accelerometers manufactured using unconventional technologies and materials in prevailing fields such as healthcare monitoring, automotive industry, navigation, building, and structural monitoring. Moreover, challenges and future efforts needed to be addressed in this field are summarized.

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“…The sensor is made using flexible PCB with PDMS lines and graphene as electrodes. This accelerometer can be used in wearables and smart skins …”

Section: Applicationsmentioning

confidence: 99%

“…This accelerometer can be used in wearables and smart skins. 143 Consumer Electronics. Inertial sensors fabricated using emerging technologies have already been implemented in many consumer electronics, such as hard drives, display screens, and gaming systems, etc.…”

Section: ■ Applicationsmentioning

confidence: 99%

Acceleration Sensors: Sensing Mechanisms, Emerging Fabrication Strategies, Materials, and Applications

Babatain

Bhattacharjee

Hussain

et al. 2021

ACS Appl. Electron. Mater.

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Ultrasensitive, Low‐Voltage Operational, and Asymmetric Ionic Sensing Hydrogel for Multipurpose Applications

Ding

Xin

Yang

et al. 2020

Adv Funct Materials

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Current artificial tactile sensors mostly exploit a variety of electron‐related physical mechanisms to obtain high sensitivity and low detection force. However, these mechanisms are still distinct from the ion‐related biological processes of human's tactile sensation, and are therefore away from the goal of bionic applications. In the past few years, only several types of ionic tactile sensors have been proposed, and they are still subject to low sensitivity. Here, a novel type of ultrasensitive hydrogel tactile sensor is reported based on asymmetric ionic charge injection as the working mechanism, named as asymmetric ionic sensing hydrogel (AISH). With a small external working voltage of only tens of millivolts, these AISH devices show an extremely low detection force of 0.075 Pa, ultrahigh sensitivity of 57–171 kPa−1, and excellent cycling reliability upon pressing. Applications of these ultrasensitive tactile sensors in fingerprint identification of voice, monitoring of pulse waves, and detection of underwater wave signals are experimentally demonstrated. Combining the merits of simple fabrication process, ionic‐type detection mechanism, and ion injection procedure, such AISH sensors not only reveal a new strategy toward highly sensitive tactile sensors, but also show realistic potential applications in future wearable electronic and bioelectronic devices.

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Electrochemical Tilt Sensors With Symmetric Concentric Electrode Pairs

Cheung

2021

IEEE Sensors J.

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A low-cost flexible electrochemical accelerometer using graphene-integrated microchannel

Cited by 7 publications

References 8 publications

Acceleration Sensors: Sensing Mechanisms, Emerging Fabrication Strategies, Materials, and Applications

Acceleration Sensors: Sensing Mechanisms, Emerging Fabrication Strategies, Materials, and Applications

Ultrasensitive, Low‐Voltage Operational, and Asymmetric Ionic Sensing Hydrogel for Multipurpose Applications

Electrochemical Tilt Sensors With Symmetric Concentric Electrode Pairs

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