Results 11 to 20 of about 19,258 (264)
Self-Powered Sensors and Systems Based on Nanogenerators [PDF]
Sensors, 2020 Sensor networks are essential for the development of the Internet of Things and the smart city. A general sensor, especially a mobile sensor, has to be driven by a power unit.
Zhiyi Wu, Tinghai Cheng, Zhong Lin Wang
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Self-Powered Potentiometric Sensors with Memory [PDF]
ACS Sensors, 2021 Potentiometric sensors induce a spontaneous voltage that indicates ion activity in real time. We present here an advanced self-powered potentiometric sensor with memory. Specifically, the approach allows for one to record a deviation from the analyte's original concentration or determine whether the analyte concentration has surpassed a threshold in a ...
Sailapu, Sunil Kumar +2 more
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Self-Powered Edible Defrosting Sensor
ACS Sensors, 2022 Improper freezing of food causes food waste and negatively impacts the environment. In this work, we propose a device that can detect defrosting events by coupling a temperature-activated galvanic cell with an ionochromic cell, which is activated by the release of ions during current flow. Both the components of the sensor are fabricated through simple
Ilic, Ivan K. +5 more
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Device, 2023 Emergent sensing technologies such as wearable electronic devices and skins, monitors for human-computer interaction, etc., are turning to versatile hydrogel chemistry to facilitate the detection of physical and chemical signals. These technologies require portable, non-invasive sensors able to work autonomously for extended periods of time in ...
Ming Li +3 more
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CoRR, 2017 This paper develops a novel power harvesting system to harvest ambient RF energy to power a wireless sensor. Harvesting ambient RF energy is a very difficult task as the power levels are extremely weak. Simulation results show zero threshold MOSFETs are essential in the RF to DC conversion process.
Paul Ryuji Chuen-Ying Huang +2 more
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Advanced Science, 2021 Traditional gas sensors are facing the challenge of low power consumption for future application in smart phones and wireless sensor platforms. To solve this problem, self‐powered gas sensors are rapidly developed in recent years.
Yue Niu +8 more
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A self-powered stretchable sensor fabricated by serpentine PVDF film for multiple dynamic monitoring
Materials & Design, 2019 Stretchable sensors are attracting more and more attention in conformal electronic devices and wearable electronics. Nevertheless, the fabrication of active flexible sensors with merits of high sensitivity is still a great challenge.
Rui Guo +5 more
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Automatika, 2022 SSD (synchronized switch damping) is used for vibration control of the motorized spindle based on piezoelectric stack. Moreover, inspired by self-powered SSDI, a self-powered SSDV circuit was designed to overcome the disadvantages of requiring ...
Likang Zheng +4 more
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Towards breath sensors that are self-powered by design
Royal Society Open Science, 2022 Piezoelectric materials are widely used to generate electric charge from mechanical deformation or vice versa. These strategies are increasingly common in implantable medical devices, where sensing must be done on small scales. In the case of a flow rate sensor, a sensor’s energy harvesting rate could be mapped to that flow rate, making it ‘self ...
Lucy Fitzgerald +4 more
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Shock and Vibration, 2018 Energy harvesting for self-powered wireless sensor networks (WSNs) is increasingly needed. In this paper, a self-powered WSN node scenario is proposed and realized by coupling the electric charge extraction interface circuit, power management module, and
Yuan Dong +5 more
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