Flexible strain sensor with high performance based on PANI/PDMS films

Abstract A high strain sensor composed of elastomer polydimethylsiloxane (PDMS) and polyaniline (PANI) was fabricated by electrodeposition method for PANI preparation and daubing method for PDMS preparation. This kind of sensor could subject to a large tensile strain (∼50%) and revealed a high gauge factor (54 at 50% strain), which was higher than other sensors reported previously. Also, the sensor displayed a current with a magnitude of mA when applied to 1 V, indicating it didn't need expensive and huge test equipment. Moreover, cyclic strain on the sensor obtained repeatable resistive responses. Its work mechanisms were discussed. The flexible sensor was proved to be useful in sensing strains and other various applications.

[1]  LuNanshu,et al.  Flexible and Stretchable Electronics Paving the Way for Soft Robotics , 2014 .

[2]  T. Someya,et al.  Conformable, flexible, large-area networks of pressure and thermal sensors with organic transistor active matrixes. , 2005, Proceedings of the National Academy of Sciences of the United States of America.

[3]  I. Park,et al.  A stretchable strain sensor based on a metal nanoparticle thin film for human motion detection. , 2014, Nanoscale.

[4]  G. Gottstein.  Physical Foundations of Materials Science , 2004 .

[5]  John A. Rogers,et al.  Highly Sensitive Skin‐Mountable Strain Gauges Based Entirely on Elastomers , 2012 .

[6]  P. Jeon,et al.  Ultrasensitive low power-consuming strain sensor based on complementary inverter composed of organic p-and n-channels , 2016 .

[7]  Xiaohui Song,et al.  Controllable fabrication of carbon nanotube-polymer hybrid thin film for strain sensing , 2009 .

[8]  J. Rogers,et al.  Stretchable Electronics: Materials Strategies and Devices , 2008 .

[9]  I. Park,et al.  Highly stretchable and sensitive strain sensor based on silver nanowire-elastomer nanocomposite. , 2014, ACS nano.

[10]  Giancarlo Canavese,et al.  Flexible Tactile Sensing Based on Piezoresistive Composites: A Review , 2014, Sensors.

[11]  Maurizio Valle,et al.  A high-sensitivity tactile sensor based on piezoelectric polymer PVDF coupled to an ultra-low voltage organic transistor , 2016 .

[12]  Sensitivity enhancement of a flexible MEMS strain sensor by a field effect transistor in an all organic approach , 2014 .

[13]  M. Kaltenbrunner,et al.  An ultra-lightweight design for imperceptible plastic electronics , 2013, Nature.

[14]  E. Wang,et al.  Super-elastic graphene ripples for flexible strain sensors. , 2011, ACS nano.

[15]  Olfa Kanoun,et al.  Flexible Carbon Nanotube Films for High Performance Strain Sensors , 2014, Sensors.

[16]  Yong Lin,et al.  A highly stretchable strain sensor based on a graphene/silver nanoparticle synergic conductive network and a sandwich structure , 2016 .

[17]  S. Nam,et al.  Highly Sensitive Non‐Classical Strain Gauge Using Organic Heptazole Thin‐Film Transistor Circuit on a Flexible Substrate , 2014 .

[18]  Neil J. Coville,et al.  Hydrostatic pressure sensor based on carbon sphere – polyvinyl alcohol composites , 2010 .

[19]  Carmen C. Y. Poon,et al.  Unobtrusive Sensing and Wearable Devices for Health Informatics , 2014, IEEE Transactions on Biomedical Engineering.

[20]  Jing Chen,et al.  Facile fabrication of three-dimensional graphene foam/poly(dimethylsiloxane) composites and their potential application as strain sensor. , 2014, ACS applied materials & interfaces.

[21]  P. Poulin,et al.  Highly piezoresistive hybrid MEMS sensors , 2014 .

[22]  Jun Zhou,et al.  High‐Strain Sensors Based on ZnO Nanowire/Polystyrene Hybridized Flexible Films , 2011, Advanced materials.

[23]  Chaehyun Lim,et al.  A Highly Sensitive and Reliable Strain Sensor Using a Hierarchical 3D and Ordered Network of Carbon Nanotubes. , 2015, Small.

[24]  S. Chen,et al.  Graphene-Elastomer Composites with Segregated Nanostructured Network for Liquid and Strain Sensing Application. , 2016, ACS applied materials & interfaces.