The Effect of Pre-Stretched Substrate on the Electrical Resistance of Printed Ag Nanowires

One-dimensional nanomaterials have drawn attention as an alternative electrode material for stretchable electronics. In particular, silver nanowires (Ag NWs) have been studied as stretchable electrodes for strain sensors, 3D electronics, and freeform-shaped electronic circuits. In this study, Ag NWs ink was printed on the pre-stretched silicone rubber film up to 40% in length using a drop-on-demand dispenser. After printing, silicone rubber film was released and stretched up to 20% as a cyclic test with 10-time repetition, and the ratios of the resistance of the stretched state to that of the released state (Rstretched/Rreleased) were measured at each cycle. For Ag NWs electrode printed on the pre-stretched silicone rubber at 30%, Rstretched/Rreleased at 10% and 20% strain was 1.05, and 1.57, respectively, which is significantly less than about 7 for Ag NWs at the 10% strain without pre-stretched substrate. In the case of 10% strain on the 30% pre-stretched substrate, the substrate is stretched and the contact points with Ag NWs were not changed much as the silicone rubber film stretched, which meant that Ag NWs may slide between other Ag NWs. Ag NWs electrode on the 40% pre-stretched substrate was stretched, strain was concentrated on the Ag NWs electrode and failure of electrode occurred, because cracks occurred at the surface of silicone rubber film when it was pre-stretched to 40%. We confirmed that printed Ag NWs on the pre-stretched film showed more contact points and less electric resistance compared to printed Ag NWs on the film without pre-stretching.

[1]  K. Kang,et al.  Strain-induced alignment of printed silver nanowires for stretchable electrodes , 2022, Flexible and Printed Electronics.

[2]  Unyong Jeong,et al.  Stand‐Alone Intrinsically Stretchable Electronic Device Platform Powered by Stretchable Rechargeable Battery , 2020, Advanced Functional Materials.

[3]  Unyong Jeong,et al.  Highly-Deformable Transparent Au Film Electrodes and Their Uses for Deformable Displays. , 2020, ACS applied materials & interfaces.

[4]  Jianhui Zhou,et al.  Flexible Wire Based on Silver Nanowires and Elastomer , 2020, IOP Conference Series: Materials Science and Engineering.

[5]  A. Shamim,et al.  Screen printing of silver nanowires: balancing conductivity with transparency while maintaining flexibility and stretchability , 2019, npj Flexible Electronics.

[6]  Helen J. Huang,et al.  Highly Stretchable and Wearable Strain Sensor Based on Printable Carbon Nanotube Layers/Polydimethylsiloxane Composites with Adjustable Sensitivity. , 2018, ACS applied materials & interfaces.

[7]  Fang-Ju Lin,et al.  Directional Solution Coating by the Chinese Brush: A Facile Approach to Improving Molecular Alignment for High‐Performance Polymer TFTs , 2017, Advanced materials.

[8]  H. Chae,et al.  Roll-to-roll preparation of silver-nanowire transparent electrode and its application to large-area organic light-emitting diodes , 2017 .

[9]  Xiaofeng Lin,et al.  Generating in-Plane Orientational Order in Multilayer Films Prepared by Spray-Assisted Layer-by-Layer Assembly. , 2017, ACS nano.

[10]  Jong-Man Kim,et al.  Extremely stretchable conductors based on hierarchically-structured metal nanowire network , 2016 .

[11]  Yanhong Tian,et al.  One-Step Fabrication of Stretchable Copper Nanowire Conductors by a Fast Photonic Sintering Technique and Its Application in Wearable Devices. , 2016, ACS applied materials & interfaces.

[12]  David J. Finn,et al.  Inkjet printing of silver nanowire networks. , 2015, ACS applied materials & interfaces.

[13]  Hyungdong Lee,et al.  Directly printed stretchable strain sensor based on ring and diamond shaped silver nanowire electrodes , 2015 .

[14]  M. Kaltenbrunner,et al.  An Imperceptible Plastic Electronic Wrap , 2014, Advanced materials.

[15]  S. Han,et al.  Highly reliable ag nanowire flexible transparent electrode with mechanically welded junctions. , 2014, Small.

[16]  Chaoyi Yan,et al.  Stretchable Silver‐Zinc Batteries Based on Embedded Nanowire Elastic Conductors , 2014 .

[17]  Benjamin J. Wiley,et al.  Reversible sliding in networks of nanowires. , 2013, Nano letters.

[18]  Nicola Pugno,et al.  Multifunctionality and Control of the Crumpling and Unfolding of Large-Area Graphene , 2012, Nature materials.

[19]  Feng Xu,et al.  Buckling of Aligned Carbon Nanotubes as Stretchable Conductors: A New Manufacturing Strategy , 2012, Advanced materials.

[20]  Benjamin C. K. Tee,et al.  Skin-like pressure and strain sensors based on transparent elastic films of carbon nanotubes. , 2011, Nature nanotechnology.

[21]  H. Choi,et al.  Highly conductive, printable and stretchable composite films of carbon nanotubes and silver. , 2010, Nature nanotechnology.

[22]  Yonggang Huang,et al.  Materials and Mechanics for Stretchable Electronics , 2010, Science.

[23]  Yonggang Huang,et al.  Printed Assemblies of Inorganic Light-Emitting Diodes for Deformable and Semitransparent Displays , 2009, Science.

[24]  T. Someya,et al.  Stretchable active-matrix organic light-emitting diode display using printable elastic conductors. , 2009, Nature materials.

[25]  S. Michel,et al.  Surface functionalization of silicone rubber for permanent adhesion improvement. , 2008, Langmuir : the ACS journal of surfaces and colloids.

[26]  T. Someya,et al.  A Rubberlike Stretchable Active Matrix Using Elastic Conductors , 2008, Science.

[27]  W. Yuan,et al.  Fault‐Tolerant Dielectric Elastomer Actuators using Single‐Walled Carbon Nanotube Electrodes , 2008 .

[28]  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.

[29]  R. Service.  Electronic Textiles Charge Ahead , 2003, Science.