Pub Date : 2023-12-01DOI: 10.1016/j.device.2023.100182
Ju-Chun Hsieh, Weilong He, Dhivya Venkatraghavan, Victoria B. Koptelova, Zoya J. Ahmad, Ilya Pyatnitskiy, Wenliang Wang, Jinmo Jeong, Kevin Kai Wing Tang, Cody Harmeier, Conrad Li, Manini Rana, Sruti Iyer, Eesha Nayak, Hong Ding, Pradeep Modur, Vincent Mysliwiec, David M Schnyer, Benjamin Baird, Huiliang Wang
{"title":"Design of an injectable, self-adhesive, and highly stable hydrogel electrode for sleep recording","authors":"Ju-Chun Hsieh, Weilong He, Dhivya Venkatraghavan, Victoria B. Koptelova, Zoya J. Ahmad, Ilya Pyatnitskiy, Wenliang Wang, Jinmo Jeong, Kevin Kai Wing Tang, Cody Harmeier, Conrad Li, Manini Rana, Sruti Iyer, Eesha Nayak, Hong Ding, Pradeep Modur, Vincent Mysliwiec, David M Schnyer, Benjamin Baird, Huiliang Wang","doi":"10.1016/j.device.2023.100182","DOIUrl":"https://doi.org/10.1016/j.device.2023.100182","url":null,"abstract":"","PeriodicalId":101324,"journal":{"name":"Device","volume":"78 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138622840","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 : 2023-12-01DOI: 10.1016/j.device.2023.100172
Marm Dixit
{"title":"Balancing battery safety and performance for electric vertical takeoff and landing aircrafts","authors":"Marm Dixit","doi":"10.1016/j.device.2023.100172","DOIUrl":"https://doi.org/10.1016/j.device.2023.100172","url":null,"abstract":"","PeriodicalId":101324,"journal":{"name":"Device","volume":"92 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139015746","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 : 2023-12-01DOI: 10.1016/j.device.2023.100180
Jian Chen, Keju Ji, Chi Xu, Jiahui Zhao, Tingwei Huo, Yi Song, Stanislav N. Gorb, Yi Long, Zhendong Dai
{"title":"Robust and reversible adhesion under extreme thermal conditions","authors":"Jian Chen, Keju Ji, Chi Xu, Jiahui Zhao, Tingwei Huo, Yi Song, Stanislav N. Gorb, Yi Long, Zhendong Dai","doi":"10.1016/j.device.2023.100180","DOIUrl":"https://doi.org/10.1016/j.device.2023.100180","url":null,"abstract":"","PeriodicalId":101324,"journal":{"name":"Device","volume":"148 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138991390","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}
Traditional metal detectors are relatively expensive, bulky, and inflexible, and they require an external power source; all of this limits their usage. Here, we present a self-powered wireless metal detector enabled by the triboelectric discharge effect, inductive coupling, and a signal modulation strategy. The device can convert mechanical triggers into wireless electromagnetic waves that contain information on nearby metals. Based on this strategy, we fabricated two prototypes with different sizes and different trigger modes, thus showing the capabilities and scalability for metal detection under different scenarios. In addition, because of the differences in the waveforms of the electromagnetic (EM) waves triggered by different types of metal, the device can also recognize the type of metal with the assistance of a trained machine learning model.
{"title":"A flexible lightweight self-powered wireless metal detector enabled by triboelectric discharge effect","authors":"Haoyu Wang, Xin Xia, Jingjing Fu, Ziwu Song, Wenbo Ding, Yuan Dai, Yunlong Zi","doi":"10.1016/j.device.2023.100127","DOIUrl":"https://doi.org/10.1016/j.device.2023.100127","url":null,"abstract":"Traditional metal detectors are relatively expensive, bulky, and inflexible, and they require an external power source; all of this limits their usage. Here, we present a self-powered wireless metal detector enabled by the triboelectric discharge effect, inductive coupling, and a signal modulation strategy. The device can convert mechanical triggers into wireless electromagnetic waves that contain information on nearby metals. Based on this strategy, we fabricated two prototypes with different sizes and different trigger modes, thus showing the capabilities and scalability for metal detection under different scenarios. In addition, because of the differences in the waveforms of the electromagnetic (EM) waves triggered by different types of metal, the device can also recognize the type of metal with the assistance of a trained machine learning model.","PeriodicalId":101324,"journal":{"name":"Device","volume":"38 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135510176","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}
Passive thermal management strategies are one of the most promising ways to reduce energy consumption for intermittent heat dissipation. However, the existing strategies encounter tough obstacles on their way to commercialization due to their low efficiencies and high costs. Herein, we propose a passive thermal management strategy that relies on moisture desorption from hygroscopic salt solutions through a protective membrane that only allows water vapor to pass through; importantly, it can spontaneously recover cooling capacity during off hours. We selected lithium bromide as a cost-effective sorbent while avoiding crystallization. Outstandingly, the strategy can provide an effective cooling capacity (ΔTmax = 11.5°C) for ∼400 min, while the measured heat flux can reach 75 kW/m2. By employing the strategy in a real computing device, its performance is improved by 32.65% with a record-high cost effectiveness. The strategy can be useful for various applications that need intermittent thermal regulation, with few technological barriers.
{"title":"Membrane-encapsulated, moisture-desorptive passive cooling for high-performance, ultra-low-cost, and long-duration electronics thermal management","authors":"Zengguang Sui, Yunren Sui, Zhixiong Ding, Haosheng Lin, Fuxiang Li, Ronggui Yang, Wei Wu","doi":"10.1016/j.device.2023.100121","DOIUrl":"https://doi.org/10.1016/j.device.2023.100121","url":null,"abstract":"Passive thermal management strategies are one of the most promising ways to reduce energy consumption for intermittent heat dissipation. However, the existing strategies encounter tough obstacles on their way to commercialization due to their low efficiencies and high costs. Herein, we propose a passive thermal management strategy that relies on moisture desorption from hygroscopic salt solutions through a protective membrane that only allows water vapor to pass through; importantly, it can spontaneously recover cooling capacity during off hours. We selected lithium bromide as a cost-effective sorbent while avoiding crystallization. Outstandingly, the strategy can provide an effective cooling capacity (ΔTmax = 11.5°C) for ∼400 min, while the measured heat flux can reach 75 kW/m2. By employing the strategy in a real computing device, its performance is improved by 32.65% with a record-high cost effectiveness. The strategy can be useful for various applications that need intermittent thermal regulation, with few technological barriers.","PeriodicalId":101324,"journal":{"name":"Device","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136128677","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 : 2023-10-01DOI: 10.1016/j.device.2023.100097
Brandon Rios, Angel Bu, Tara Sheehan, Hiba Kobeissi, Sonika Kohli, Karina Shah, Emma Lejeune, Ritu Raman
The hierarchical design and adaptive functionalities of biological tissues are driven by dynamic biochemical, electrical, and mechanical signaling between cells and their extracellular matrices. While existing tools enable monitoring and controlling biochemical and electrical signaling in multicellular systems, there is a significant need for techniques that enable mapping and modulating intercellular mechanical signaling. We have developed a magnetically actuated extracellular matrix that serves as a mechanically active substrate for cells and can program morphological and functional anisotropy in tissues such as skeletal muscle. This method improves the ease and efficiency of programming muscle force directionality and synchronicity for applications ranging from medicine to robotics. Additionally, we present an open-source computational framework enabling quantitative analyses of muscle contractility. Our actuating matrices and accompanying tools are broadly applicable across cell types and hydrogel chemistries, and they can drive fundamental studies in mechanobiology as well as translational applications of engineered tissues in medicine and machines.
{"title":"Mechanically programming anisotropy in engineered muscle with actuating extracellular matrices","authors":"Brandon Rios, Angel Bu, Tara Sheehan, Hiba Kobeissi, Sonika Kohli, Karina Shah, Emma Lejeune, Ritu Raman","doi":"10.1016/j.device.2023.100097","DOIUrl":"https://doi.org/10.1016/j.device.2023.100097","url":null,"abstract":"The hierarchical design and adaptive functionalities of biological tissues are driven by dynamic biochemical, electrical, and mechanical signaling between cells and their extracellular matrices. While existing tools enable monitoring and controlling biochemical and electrical signaling in multicellular systems, there is a significant need for techniques that enable mapping and modulating intercellular mechanical signaling. We have developed a magnetically actuated extracellular matrix that serves as a mechanically active substrate for cells and can program morphological and functional anisotropy in tissues such as skeletal muscle. This method improves the ease and efficiency of programming muscle force directionality and synchronicity for applications ranging from medicine to robotics. Additionally, we present an open-source computational framework enabling quantitative analyses of muscle contractility. Our actuating matrices and accompanying tools are broadly applicable across cell types and hydrogel chemistries, and they can drive fundamental studies in mechanobiology as well as translational applications of engineered tissues in medicine and machines.","PeriodicalId":101324,"journal":{"name":"Device","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135996623","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 : 2023-10-01DOI: 10.1016/j.device.2023.100116
Ioanna Bakaimi, Ritu Raman
Professor Ritu Raman is a mechanical engineer at the Massachusetts Institute of Technology, where her work focuses on the development of soft robots using biological materials. The following discussion focuses on her group’s recent work published in Device and presents a magnetically actuated extracellular matrix that can be used to program morphological and functional anisotropy in tissues such as skeletal muscles. Importantly, this work highlights the potential to control a wide range of hydrogel chemistries for modulating complex multicellular tissues using magnetic forces.
{"title":"Magnetic matrix actuation for programming tissues","authors":"Ioanna Bakaimi, Ritu Raman","doi":"10.1016/j.device.2023.100116","DOIUrl":"https://doi.org/10.1016/j.device.2023.100116","url":null,"abstract":"Professor Ritu Raman is a mechanical engineer at the Massachusetts Institute of Technology, where her work focuses on the development of soft robots using biological materials. The following discussion focuses on her group’s recent work published in Device and presents a magnetically actuated extracellular matrix that can be used to program morphological and functional anisotropy in tissues such as skeletal muscles. Importantly, this work highlights the potential to control a wide range of hydrogel chemistries for modulating complex multicellular tissues using magnetic forces.","PeriodicalId":101324,"journal":{"name":"Device","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136007672","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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