Pub Date : 2021-12-06DOI: 10.1109/PowerMEMS54003.2021.9658376
T. Bhatta, P. Maharjan, Kumar Shrestha, Sang Hyun Lee, Chani Park, J. Park
This work reports a high-performance and highly sensitive self-sustained arbitrary motion sensing system (SS-AMSS) by integrating energy harvesting and self-powered sensing on a novel 3D printed geometry. SS-AMSS consists of a spherical magnet rolling inside the hollow ellipsoid surrounded with six planar spiral coils for scavenging energy from multi-direction and four triboelectric nanogenerators (TENGs) are integrated for arbitrary motion detection. Unlike traditional TENGs that require external stimuli for periodic contact-separation, the custom fabricated PDMS/FeSiCr ferroelectric film acts as an actuating layer, thus simplifying the TENG operation. The electromagnetic generator can deliver a peak power of 187 mW at 275 Ω matching load under 6 Hz frequency. The self-powered sensors have excellent motion sensitivities for detecting various motion parameters along with linear (X, Y, and Z-axis) and rotational (pitch, roll, and yaw axis) conditions. Finally, the capability of SS-AMSS as a complete wireless self-powered motion sensing system has been demonstrated.
{"title":"Self-sustained Arbitrary Motion Sensing System for Wireless Autonomous Control Application","authors":"T. Bhatta, P. Maharjan, Kumar Shrestha, Sang Hyun Lee, Chani Park, J. Park","doi":"10.1109/PowerMEMS54003.2021.9658376","DOIUrl":"https://doi.org/10.1109/PowerMEMS54003.2021.9658376","url":null,"abstract":"This work reports a high-performance and highly sensitive self-sustained arbitrary motion sensing system (SS-AMSS) by integrating energy harvesting and self-powered sensing on a novel 3D printed geometry. SS-AMSS consists of a spherical magnet rolling inside the hollow ellipsoid surrounded with six planar spiral coils for scavenging energy from multi-direction and four triboelectric nanogenerators (TENGs) are integrated for arbitrary motion detection. Unlike traditional TENGs that require external stimuli for periodic contact-separation, the custom fabricated PDMS/FeSiCr ferroelectric film acts as an actuating layer, thus simplifying the TENG operation. The electromagnetic generator can deliver a peak power of 187 mW at 275 Ω matching load under 6 Hz frequency. The self-powered sensors have excellent motion sensitivities for detecting various motion parameters along with linear (X, Y, and Z-axis) and rotational (pitch, roll, and yaw axis) conditions. Finally, the capability of SS-AMSS as a complete wireless self-powered motion sensing system has been demonstrated.","PeriodicalId":165158,"journal":{"name":"2021 IEEE 20th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications (PowerMEMS)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123860351","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-12-06DOI: 10.1109/PowerMEMS54003.2021.9658407
Xu Chen, M. Kiziroglou, E. Yeatman
This paper presents experimental results on an evaluation platform for MEMS-actuated compliant structures. A combination of 3 dimensional (3D) flexure design, 3D printing of polymers with controlled stiffness is employed. A modular system design approach allows the interchange and combination of different actuation cantilevers, flexures and structure designs implemented as standalone test parts with minimal assembly requirements. The performance evaluation method includes synchronised electrical excitation and optical displacement measurements, allowing characterisation of motion amplification, dynamic response as well as actuating power transfer. As a demonstrator, a single lever compliant structure was designed, fabricated and tested on the platform to investigate how geometry and material stiffness affect performance. The experimental results reveal that significant improvement of amplification ratio and absolute phase lag can be achieved by selecting a flexure height and material composition suitable for a given application. This method of combined experimental evaluation and custom 3D design and printing is promising for optimising the design of compliant structures for MEMS sensors, actuators and energy transducers with amplified or translated motion capability.
{"title":"Evaluation Platform for MEMS-Actuated 3D-Printed Compliant Structures","authors":"Xu Chen, M. Kiziroglou, E. Yeatman","doi":"10.1109/PowerMEMS54003.2021.9658407","DOIUrl":"https://doi.org/10.1109/PowerMEMS54003.2021.9658407","url":null,"abstract":"This paper presents experimental results on an evaluation platform for MEMS-actuated compliant structures. A combination of 3 dimensional (3D) flexure design, 3D printing of polymers with controlled stiffness is employed. A modular system design approach allows the interchange and combination of different actuation cantilevers, flexures and structure designs implemented as standalone test parts with minimal assembly requirements. The performance evaluation method includes synchronised electrical excitation and optical displacement measurements, allowing characterisation of motion amplification, dynamic response as well as actuating power transfer. As a demonstrator, a single lever compliant structure was designed, fabricated and tested on the platform to investigate how geometry and material stiffness affect performance. The experimental results reveal that significant improvement of amplification ratio and absolute phase lag can be achieved by selecting a flexure height and material composition suitable for a given application. This method of combined experimental evaluation and custom 3D design and printing is promising for optimising the design of compliant structures for MEMS sensors, actuators and energy transducers with amplified or translated motion capability.","PeriodicalId":165158,"journal":{"name":"2021 IEEE 20th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications (PowerMEMS)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127253795","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-12-06DOI: 10.1109/powermems54003.2021.9658374
{"title":"PowerMEMS 2021 TOC","authors":"","doi":"10.1109/powermems54003.2021.9658374","DOIUrl":"https://doi.org/10.1109/powermems54003.2021.9658374","url":null,"abstract":"","PeriodicalId":165158,"journal":{"name":"2021 IEEE 20th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications (PowerMEMS)","volume":"203 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128688632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-12-06DOI: 10.1109/powermems54003.2021.9658400
{"title":"[PowerMEMS 2021 Copyright notice]","authors":"","doi":"10.1109/powermems54003.2021.9658400","DOIUrl":"https://doi.org/10.1109/powermems54003.2021.9658400","url":null,"abstract":"","PeriodicalId":165158,"journal":{"name":"2021 IEEE 20th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications (PowerMEMS)","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129667346","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-12-06DOI: 10.1109/PowerMEMS54003.2021.9658377
Rahul Adhikari, N. Jackson
The inability to tune the frequency of MEMS vibration energy harvesting devices is considered to be a major challenge which is limiting the use of devices in real world applications. Previous attempts are either not compatible with microfabrication, have large footprints, or use complex tuning methods which require power. This paper reports on a novel passive method of tuning the frequency by embedding nanopowder masses into a stationary proof mass with an array of cavities. The experimental and computational validation of changing and tuning the frequency is demonstrated. The change in frequency is caused from varying the location of the nanopowder filler in the proof mass to alter the center of gravity. The goal of this study was to validate the concept using macroscale piezoelectric energy harvesting devices, and to determine key parameters that affect the resolution and range of the frequency tuning capabilities. The experimental results demonstrated that the range of the frequency for the piezoelectric cantilever is 20.3 Hz to 49.1 Hz for this particular commercial macro-scale energy harvesting cantilever. Computational simulations had similar results of 23.7 Hz to 49.4 Hz. The resolution of tuning was <0.1 Hz.
{"title":"Passive Frequency Tuning of Piezoelectric Energy Harvester using Embedded Masses","authors":"Rahul Adhikari, N. Jackson","doi":"10.1109/PowerMEMS54003.2021.9658377","DOIUrl":"https://doi.org/10.1109/PowerMEMS54003.2021.9658377","url":null,"abstract":"The inability to tune the frequency of MEMS vibration energy harvesting devices is considered to be a major challenge which is limiting the use of devices in real world applications. Previous attempts are either not compatible with microfabrication, have large footprints, or use complex tuning methods which require power. This paper reports on a novel passive method of tuning the frequency by embedding nanopowder masses into a stationary proof mass with an array of cavities. The experimental and computational validation of changing and tuning the frequency is demonstrated. The change in frequency is caused from varying the location of the nanopowder filler in the proof mass to alter the center of gravity. The goal of this study was to validate the concept using macroscale piezoelectric energy harvesting devices, and to determine key parameters that affect the resolution and range of the frequency tuning capabilities. The experimental results demonstrated that the range of the frequency for the piezoelectric cantilever is 20.3 Hz to 49.1 Hz for this particular commercial macro-scale energy harvesting cantilever. Computational simulations had similar results of 23.7 Hz to 49.4 Hz. The resolution of tuning was <0.1 Hz.","PeriodicalId":165158,"journal":{"name":"2021 IEEE 20th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications (PowerMEMS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129747452","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-12-06DOI: 10.1109/PowerMEMS54003.2021.9658405
O. Aragonez, N. Jackson
Harvesting energy by coupling a magnetic proof mass with current flowing through a wire has recently been investigated as a method to power wireless sensor networks. However, the location of the cantilever and magnet in relation to the wire is critical to optimize performance. The configuration of the wire and the stiffness of the cantilever are also critical for device performance. This paper investigates optimizing the spatial location of the energy harvester and magnetic proof mass in relation to the wire for smart grid applications. Two different types of wires (solid and braided) copper wires were used with varying current up to 20A. This is conducted using a macro-scale piezoelectric cantilever with the goal to gain insight to apply to micro-electromechanical devices. Two different piezoelectric cantilevers with varying stiffness were tuned to operate at 60 Hz resonant frequency, using NdFeB magnet. The magnets act as a proof mass to lower the frequency while also coupling to the magnetic field from the current carrying wire, generating a sinusoidal force. Experimental and finite element modelling determined that the optimal location of the magnet for a solid wire was between 33° and 40° depending on the cantilever stiffness.
{"title":"Spatial Optimization of Piezoelectric Energy Scavenger from Current-Carrying Wire","authors":"O. Aragonez, N. Jackson","doi":"10.1109/PowerMEMS54003.2021.9658405","DOIUrl":"https://doi.org/10.1109/PowerMEMS54003.2021.9658405","url":null,"abstract":"Harvesting energy by coupling a magnetic proof mass with current flowing through a wire has recently been investigated as a method to power wireless sensor networks. However, the location of the cantilever and magnet in relation to the wire is critical to optimize performance. The configuration of the wire and the stiffness of the cantilever are also critical for device performance. This paper investigates optimizing the spatial location of the energy harvester and magnetic proof mass in relation to the wire for smart grid applications. Two different types of wires (solid and braided) copper wires were used with varying current up to 20A. This is conducted using a macro-scale piezoelectric cantilever with the goal to gain insight to apply to micro-electromechanical devices. Two different piezoelectric cantilevers with varying stiffness were tuned to operate at 60 Hz resonant frequency, using NdFeB magnet. The magnets act as a proof mass to lower the frequency while also coupling to the magnetic field from the current carrying wire, generating a sinusoidal force. Experimental and finite element modelling determined that the optimal location of the magnet for a solid wire was between 33° and 40° depending on the cantilever stiffness.","PeriodicalId":165158,"journal":{"name":"2021 IEEE 20th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications (PowerMEMS)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126972694","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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