3D printed mould-based graphite/PDMS sensor for low-force applications

被引：83
作者：
Nag, A. [1 ]
Feng, S. [1 ]
Mukhopadhyay, S. C. [1 ]
Kosel, J. [2 ]
Inglis, D. [1 ]
机构：
[1] Macquarie Univ, Sch Engn, Fac Sci & Engn, Sydney, NSW 2109, Australia
[2] KAUST, Comp Elect Math Sci & Engn Div, Thuwal, Saudi Arabia
来源：
SENSORS AND ACTUATORS A-PHYSICAL | 2018年 / 280卷
关键词：
Graphite; PDMS; 3D printing; Force sensing; Capacitive sensor; TACTILE SENSOR; ARRAY; PERFORMANCE; BIOSENSORS; COMPOSITE; SOFT;
D O I：
10.1016/j.sna.2018.08.028
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This paper concerns the design, fabrication and characterization of graphite/PDMS sensors for low-force sensing applications. Exploiting the design flexibility of 3D printing, moulds of specific dimensions were prepared onto which graphite powder and PDMS were cast, to develop sensor patches. The sensor patches were highly flexible with repeatable responses to iterative bending cycles. The patches were tested in terms of stretchability, strain and bending-cycle responses. The sensor patches had interdigitated electrodes operating on capacitive sensing, where the effective capacitance changes with an applied force because of changes in their dimensions. Forces ranging from 3.5 mN to 17.5 mN were applied to determine the capability of these sensor patches for low-force sensing applications. The sensor patches had a quick recovery having a sensitivity and SNR per unit force of 0.2542 pF mN(-1) and 10.86 respectively. The patches were capable of differentiating the forces applied on them, when they were attached to different objects in daily use. (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码：525 / 534
页数：10
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