The 1st Joint International Conference on Multibody System ...



Solvent-free Fabrication of Ultrasensitive Strain and Pressure Sensor for detection of human motionJian Wang*, Ryuki Suzuki*, Takuto Nakamura*, Wei Weng*, Seimei Shiratori** School of Integrated Design Engineering, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, 223-8522 Yokohama, Keio University,Japan (jwangjn@)(shiratori@appi.keio.ac.jp)AbstractFlexible and wearable electronics have a huge potential application in human body signal monitoring ADDIN ZOTERO_ITEM CSL_CITATION {"citationID":"qWRymybn","properties":{"formattedCitation":"\\super 1\\nosupersub{}","plainCitation":"1","noteIndex":0},"citationItems":[{"id":2845,"uris":[""],"uri":[""],"itemData":{"id":2845,"type":"article-journal","title":"Bionic Fish-scale Surface Structures Fabricated via the Air/Water Interface for Flexible and Ultrasensitive Pressure Sensors","container-title":"ACS applied materials & interfaces","DOI":"10.1021/acsami.8b08933","note":"00000","author":[{"family":"Wang","given":"Jian"},{"family":"Tenjimbayashi","given":"Mizuki"},{"family":"Tokura","given":"Yuki"},{"family":"Park","given":"Jun-Yong"},{"family":"Kawase","given":"Koki"},{"family":"Li","given":"Jiatu"},{"family":"Shiratori","given":"Seimei"}],"issued":{"date-parts":[["2018"]]}}}],"schema":""} 1, human-computer interaction ADDIN ZOTERO_ITEM CSL_CITATION {"citationID":"mxZUTZTi","properties":{"formattedCitation":"\\super 2\\nosupersub{}","plainCitation":"2","noteIndex":0},"citationItems":[{"id":4661,"uris":[""],"uri":[""],"itemData":{"id":4661,"type":"article-journal","title":"Highly Sensitive, Ultrastretchable Strain Sensors Prepared by Pumping Hybrid Fillers of Carbon Nanotubes/Cellulose Nanocrystal into Electrospun Polyurethane Membranes","container-title":"ACS Applied Materials & Interfaces","source":"ACS Publications","abstract":"Advanced flexible strain sensors for human motion detection and other potential use have attracted great attention in recent years. However, the preparation of strain sensor with both high sensitivity and large workable strain range remains a challenge. In this work, the carbon nanotube (CNT) suspensions with the assistance of cellulose nanocrystals (CNC) were directly pumped into the porous electrospun thermoplastic polyurethanes (TPU) membranes through a simple filtration process to prepare the flexible strain sensors in one step. The sensitivity and workable strain range of the strain sensors are tunable by changing the mass ratios of CNTs/CNC and the total amount of hybrid fillers. With increase in the total amount of fillers, a change of filler layer from droplet to completely continuous film was observed, resulting in a sharp increase of strain sensitivity. By combining the ultraelasticity of the TPU material and the high sensitivity of hybrid fillers, the strain sensor with large workable strain range (>500%) and high sensitivity (gauge factor = 321) was successfully prepared. Its applications in visual control and full-range human body motion detection were demonstrated, showing its tremendous potential applications in future intelligent electronics.","URL":"","DOI":"10.1021/acsami.9b00136","ISSN":"1944-8244","journalAbbreviation":"ACS Appl. Mater. Interfaces","author":[{"family":"Zhu","given":"Li"},{"family":"Zhou","given":"Xin"},{"family":"Liu","given":"Yuhang"},{"family":"Fu","given":"Qiang"}],"issued":{"date-parts":[["2019",3,12]]},"accessed":{"date-parts":[["2019",3,23]]}}}],"schema":""} 2 and electronic skin ADDIN ZOTERO_ITEM CSL_CITATION {"citationID":"6dabx5Iq","properties":{"formattedCitation":"\\super 3\\nosupersub{}","plainCitation":"3","noteIndex":0},"citationItems":[{"id":4342,"uris":[""],"uri":[""],"itemData":{"id":4342,"type":"article-journal","title":"Wearable biosensors for healthcare monitoring","container-title":"Nature Biotechnology","page":"1","source":"","abstract":"Assessing progress towards designing reliable wearable biosensors reveals the challenges remaining before the promise of clinical translation can be realized.","DOI":"10.1038/s41587-019-0045-y","ISSN":"1546-1696","language":"En","author":[{"family":"Kim","given":"Jayoung"},{"family":"Campbell","given":"Alan S."},{"family":"?vila","given":"Berta Esteban-Fernández","dropping-particle":"de"},{"family":"Wang","given":"Joseph"}],"issued":{"date-parts":[["2019",2,25]]}}}],"schema":""} 3, which has promoted the rapid development of flexible sensors. In this work, we proposed a solvent-free and low-cost strategy to prepare pressure and strain sensors based on graphene nanosheet cascade multilayer structure. The graphene nanosheets are directly attached to the PDMS surface by strong van der Waals forces, then assembled into a flexible sensor. Thanks to the graphene nanosheet cascade multilayer structure, the sensor has a detection limit of strain as low as 0.1% and the gauge factor (GF) can reach up to 55.2. In addition, the sensor also has an excellent pressure range as large as 700kPa. Compared to most of the reported graphene-based sensors, this work uses a novel manufacturing method without any chemical solvent involvement. Furthermore, the sensor not only has outstanding pressure sensitivity and wide response range, but also has excellent high strain sensitivity. Based on the convenience of preparation and the superiority of performance, the sensor can realize the signal of human body activity, speech recognition and handwriting recognition, demonstrating the huge application potential of the sensor in the wearable field.Figure SEQ Figure \* ARABIC 1: Schematic diagram of solvent-free graphene sensor and its application.ReferencesWang, J.; Tenjimbayashi, M.; Tokura, Y.; Park, J.-Y.; Kawase, K.; Li, J.; Shiratori, S. Bionic Fish-Scale Surface Structures Fabricated via the Air/Water Interface for Flexible and Ultrasensitive Pressure Sensors. ACS Appl. Mater. Interfaces, Vol. 10, No. 36, pp. 30689–30697, 2018. Zhu, L.; Zhou, X.; Liu, Y.; Fu, Q. Highly Sensitive Flexible Pressure Sensor Based on Silver Nanowires-Embedded Polydimethylsiloxane Electrode with Microarray Structure. ACS Appl. Mater. Interfaces, Vol. 11, No. 13, pp. 12968–12977, 2019. Kim, J.; Campbell, A. S.; ?vila, B. E.-F. de; Wang, J. Wearable Biosensors for Healthcare Monitoring. Nature Biotechnology, No. 37, pp. 389–406, 2019. ................
................

In order to avoid copyright disputes, this page is only a partial summary.

Google Online Preview   Download