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2D-SnSe2 Nanosheet Functionalized Piezo-resistive Flexible Sensor for Pressure and Human Breath Monitoring
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2020-05-04 , DOI: 10.1021/acssuschemeng.0c01827
Mohit Tannarana 1, 2 , G. K. Solanki 1 , Sanjay A. Bhakhar 1 , Kirit D. Patel 1 , V. M. Pathak 1 , Pratik M. Pataniya 3
Affiliation  

Flexible sensors based on two-dimensional layered materials have gained huge attention in the field of intelligent electronics. The cellulose based platform provides a cost-effective way for fabrication of strain or pressure sensing abilities of the sensor. This paper reports a paper based flexible sensor functionalized by 2D-SnSe2 nanosheets for its multifunctional sensing purposes. 2D-SnSe2 nanosheets were synthesized by a high-yield liquid phase exfoliation technique. The multifunctional sensor fabricated using Whatman filter paper was exploited in the pressure range 2 to 100 kPa. The sensor exhibits the excellent stability and reproducibility with high responsivity of 611% and sensitivity of 1.79 kPa–1. The sensor exhibited excellent stability up to 5000 loading cycles. The response time of the pressure sensors is 100 ms, showing optimum sensor structure for future electronics. The sensor shows excellent potential for the online monitoring of a human breath with 3.2–3.5 s/breath. Finally, the paper advocates the great advancement of two-dimensional transition metal dichalcogenides for their applications as high-performance devices.

中文翻译:

用于压力和人体呼吸监测的2D-SnSe 2纳米片功能化压阻柔性传感器

基于二维分层材料的柔性传感器在智能电子领域受到了广泛的关注。基于纤维素的平台为制造传感器的应变或压力感测能力提供了一种经济有效的方式。本文报告了一种基于纸张的柔性传感器,该传感器由2D-SnSe 2纳米片功能化,可实现其多功能传感目的。通过高产率液相剥离技术合成了2D-SnSe 2纳米片。使用Whatman滤纸制造的多功能传感器的压力范围为2至100 kPa。该传感器具有出色的稳定性和可重复性,响应度高达611%,灵敏度为1.79 kPa –1。该传感器在高达5000次加载循环中表现出出色的稳定性。压力传感器的响应时间为100毫秒,显示了未来电子设备的最佳传感器结构。该传感器具有3.2–3.5 s /次呼吸的在线监测人类呼吸的潜力。最后,本文提倡将二维过渡金属二卤化物作为高性能器件的应用取得重大进展。
更新日期:2020-05-04
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