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

Abstract 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.

[1]  Jiajun Wang,et al.  Three-dimensional Printed Acrylonitrile Butadiene Styrene Framework Coated with Cu-BTC Metal-organic Frameworks for the Removal of Methylene Blue , 2014, Scientific Reports.

[2]  R. Pilloton,et al.  Screen printed graphite biosensors based on bacterial cells , 2004 .

[3]  Jue Lu,et al.  Nanometal-decorated exfoliated graphite nanoplatelet based glucose biosensors with high sensitivity and fast response. , 2008, ACS nano.

[4]  Liqiang Li,et al.  High-Performance Pressure Sensor for Monitoring Mechanical Vibration and Air Pressure , 2018, Polymers.

[5]  Jin-Woo Choi,et al.  A flexible two dimensional force sensor using PDMS nanocomposite , 2017 .

[6]  Zhiqiang Niu,et al.  Flexible Room-Temperature Gas Sensors of Nanocomposite Network-Coated Papers , 2016 .

[7]  Peter Ryser,et al.  Processing of graphite-based sacrificial layer for microfabrication of low temperature co-fired ceramics (LTCC) , 2006 .

[8]  M. Vaka,et al.  Highly sensitive pressure sensor based on graphene hybrids , 2020 .

[9]  Kuang-Chao Fan,et al.  Flexible Temperature Sensor Array Based on a Graphite-Polydimethylsiloxane Composite , 2010, Sensors.

[10]  Shaohui Zhang,et al.  Flexible Highly Sensitive Pressure Sensor Based on Ionic Liquid Gel Film , 2018, ACS omega.

[11]  T. Ren,et al.  A Graphene-Based Resistive Pressure Sensor with Record-High Sensitivity in a Wide Pressure Range , 2015, Scientific Reports.

[12]  Alexandre Bernardino,et al.  Low-cost 3-axis soft tactile sensors for the human-friendly robot Vizzy , 2017, 2017 IEEE International Conference on Robotics and Automation (ICRA).

[13]  S. Mukhopadhyay,et al.  Strain induced graphite/PDMS sensors for biomedical applications , 2018 .

[14]  Jae-Won Choi,et al.  Flexible Piezoresistive Sensors Embedded in 3D Printed Tires , 2017, Sensors.

[15]  P. Dario,et al.  Characterization of a novel hybrid silicon three-axial force sensor , 2005 .

[16]  S. Mukhopadhyay,et al.  Tactile Sensing From Laser-Ablated Metallized PET Films , 2017, IEEE Sensors Journal.

[17]  Ruben D. Ponce Wong,et al.  Sensors and Actuators A: Physical , 2022 .

[18]  Lihua Feng,et al.  A graphite nanoplatelet/epoxy composite with high dielectric constant and high thermal conductivity , 2013 .

[19]  R. Sun,et al.  Flexible and Highly Sensitive Pressure Sensor Based on Microdome-Patterned PDMS Forming with Assistance of Colloid Self-Assembly and Replica Technique for Wearable Electronics. , 2017, ACS applied materials & interfaces.

[20]  P. Dario,et al.  Design and fabrication of a hybrid silicon three-axial force sensor for biomechanical applications , 2005 .

[21]  R. R. Moore,et al.  Basal plane pyrolytic graphite modified electrodes: comparison of carbon nanotubes and graphite powder as electrocatalysts. , 2004, Analytical chemistry.

[22]  Remco Sanders,et al.  3D printed flexible capacitive force sensor with a simple micro-controller based readout , 2017, 2017 IEEE SENSORS.

[23]  J. Desai,et al.  MEMS-Based Flexible Force Sensor for Tri-Axial Catheter Contact Force Measurement , 2017, Journal of Microelectromechanical Systems.

[24]  Che-Hsin Lin,et al.  Experimental and numerical estimations into the force distribution on an occlusal surface utilizing a flexible force sensor array. , 2011, Journal of biomechanics.

[25]  Choon Young Lee,et al.  PDMS membrane based force sensor: Basic structure design and assessment , 2013, IEEE ISR 2013.

[26]  Hongbo Wang,et al.  A Low-cost Soft Tactile Sensing Array Using 3D Hall Sensors , 2016 .

[27]  Tian-Ling Ren,et al.  Flexible Graphite-on-Paper Piezoresistive Sensors , 2012, Sensors.

[28]  Hyung-Kew Lee,et al.  Iop Publishing Journal of Micromechanics and Microengineering Real-time Measurement of the Three-axis Contact Force Distribution Using a Flexible Capacitive Polymer Tactile Sensor , 2022 .

[29]  Talha Agcayazi,et al.  Soft, flexible 3D printed fibers for capacitive tactile sensing , 2016, 2016 IEEE SENSORS.

[30]  N. Lovell,et al.  Characterization of a capacitive tactile shear sensor for application in robotic and upper limb prostheses , 2011 .

[31]  Hongbo Wang,et al.  Design Methodology for Magnetic Field-Based Soft Tri-Axis Tactile Sensors , 2016, Sensors.

[32]  O. Paul,et al.  Novel 3D piezoresistive silicon force sensor for dimensional metrology of micro components , 2005, IEEE Sensors, 2005..

[33]  Sungryul Yun,et al.  Transparent and flexible force sensor array based on optical waveguide. , 2012, Optics express.

[34]  Gordon Cheng,et al.  Integration of a Thin Film PDMS-Based Capacitive Sensor for Tactile Sensing in an Electronic Skin , 2016, J. Sensors.

[35]  S. Mukhopadhyay,et al.  Flexible carbon nanotube nanocomposite sensor for multiple physiological parameter monitoring , 2016 .

[36]  R. A. Antunes,et al.  Investigation on the corrosion resistance of carbon black–graphite-poly(vinylidene fluoride) composite bipolar plates for polymer electrolyte membrane fuel cells , 2011 .

[37]  Hiroyuki Kudo,et al.  A flexible and wearable glucose sensor based on functional polymers with soft-MEMS techniques. , 2006, Biosensors & bioelectronics.

[38]  Veronica J. Santos,et al.  Biomimetic Tactile Sensor Array , 2008, Adv. Robotics.

[39]  Subhas Chandra Mukhopadhyay,et al.  Novel Sensors for Food Inspection: Modelling, Fabrication and Experimentation , 2014 .

[40]  Hongki Kim,et al.  Capacitive tactile sensor array for touch screen application , 2011 .

[41]  Martin A. M. Gijs,et al.  Flexible polyimide-based force sensor , 2012 .

[42]  Jing Zhao,et al.  Review of graphene-based strain sensors , 2013 .

[43]  Yu Zhang,et al.  Highly Sensitive Flexible Pressure Sensor Based on Silver Nanowires-Embedded Polydimethylsiloxane Electrode with Microarray Structure. , 2017, ACS applied materials & interfaces.

[44]  Wen J. Li,et al.  An integrated MEMS three-dimensional tactile sensor with large force range , 2000 .

[45]  Jonathan P. Metters,et al.  Screen printed graphite electrochemical sensors for the voltammetric determination of antimony(III) , 2013 .

[46]  Norman Hendrich,et al.  3D-PRINTED LOW-COST MODULAR FORCE SENSORS , 2017 .

[47]  D. Beebe,et al.  A silicon force sensor for robotics and medicine , 1995 .

[48]  Walter Lang,et al.  Low-Cost Thin and Flexible Screen-Printed Pressure Sensor , 2017 .

[49]  Jong-Ho Kim,et al.  Enhanced performance in capacitive force sensors using carbon nanotube/polydimethylsiloxane nanocomposites with high dielectric properties. , 2016, Nanoscale.

[50]  L. Beccai,et al.  Flexible Three‐Axial Force Sensor for Soft and Highly Sensitive Artificial Touch , 2014, Advanced materials.

[51]  R. Savu,et al.  A wearable, highly stable, strain and bending sensor based on high aspect ratio graphite nanobelts , 2016, Nanotechnology.

[52]  A. Salleo,et al.  Flexible Electronics: Materials and Applications , 2009 .

[53]  H. Fu,et al.  Synthesis and applications of graphite carbon sphere with uniformly distributed magnetic Fe3O4 nanoparticles (MGCSs) and MGCS@Ag, MGCS@TiO2 , 2010 .

[54]  David J Pearsall,et al.  Evaluation of a flexible force sensor for measurement of helmet foam impact performance. , 2011, Journal of biomechanics.

[55]  Hao Jiang,et al.  Flexible hemispheric microarrays of highly pressure-sensitive sensors based on breath figure method. , 2018, Nanoscale.

[56]  Wei Gao,et al.  Skin force sensor using piezoresistive PEDOT:PSS with arabitol on flexible PDMS , 2015, 2015 IEEE SENSORS.

[57]  Vijay Kumar,et al.  Two-dimensional, vision-based μN force sensor for microrobotics , 2009, 2009 IEEE International Conference on Robotics and Automation.

[58]  M. Nie,et al.  Capacitive Pressure Sensors , 2015 .