Fully solution processed liquid metal features as highly conductive and ultrastretchable conductors
Source abstract
Abstract
Abstract Liquid metal represents a highly conductive and inherently deformable conductor for the development of stretchable electronics. The widespread implementations of liquid metal towards functional sensors and circuits are currently hindered by the lack of a facile and scalable patterning approach. In this study, we report a fully solution-based process to generate patterned features of the liquid metal conductor. The entire process is carried out under ambient conditions and is generally compatible with various elastomeric substrates. The as-prepared liquid metal feature exhibits high resolution (100 μm), excellent electrical conductivity (4.15 × 104S cm−1), ultrahigh stretchability (1000% tensile strain), and mechanical durability. The practical suitability is demonstrated by the heterogeneous integration of light-emitting diode (LED) chips with liquid metal interconnects for a stretchable and wearable LED array. The solution-based technique reported here is the enabler for the facile patterning of liquid metal features at low cost, which may find a broad range of applications in emerging fields of epidermal sensors, wearable heaters, advanced prosthetics, and soft robotics.
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Research context
OpenAlex topics: Advanced Sensor and Energy Harvesting Materials · Tactile and Sensory Interactions · Nanomaterials and Printing Technologies
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References (74)
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1. Rogers, J. A., Someya, T. & Huang, Y. Materials and mechanics for stretchable electronics. Science 327, 1603–1607 (2010).10.1126/science.1182383 ↗
2. Choi, S., Lee, H., Ghaffari, R., Hyeon, T. & Kim, D.-H. Recent advances in flexible and stretchable bio-electronic devices integrated with nanomaterials. Adv. Mater. 28, 4203–4218 (2016).10.1002/adma.201504150 ↗
3. Suo, Z. Mechanics of stretchable electronics and soft machines. MRS Bull. 37, 218–225 (2012).10.1557/mrs.2012.32 ↗
4. Wang, S., Oh, J. Y., Xu, J., Tran, H. & Bao, Z. Skin-inspired electronics: an emerging paradigm. Acc. Chem. Res. 51, 1033–1045 (2018).10.1021/acs.accounts.8b00015 ↗
5. Chung, H. U. et al. Binodal, wireless epidermal electronic systems with in-sensor analytics for neonatal intensive care. Science 363, eaau0780 (2019).10.1126/science.aau0780 ↗
6. Chen, Y. et al. Skin-like biosensor system via electrochemical channels for noninvasive blood glucose monitoring. Sci. Adv. 3, e1701629 (2017).10.1126/sciadv.1701629 ↗
7. Son, D. et al. Multifunctional wearable devices for diagnosis and therapy of movement disorders. Nat. Nanotechnol. 9, 397–404 (2014).10.1038/nnano.2014.38 ↗
8. Wang, X., Gu, Y., Xiong, Z., Cui, Z. & Zhang, T. Silk-molded flexible, ultrasensitive, and highly stable electronic skin for monitoring human physiological signals. Adv. Mater. 26, 1336–1342 (2014).10.1002/adma.201304248 ↗
9. Kim, J. et al. Stretchable silicon nanoribbon electronics for skin prosthesis. Nat. Commun. 5, 5747 (2014).10.1038/ncomms6747 ↗
10. Chortos, A., Liu, J. & Bao, Z. Pursuing prosthetic electronic skin. Nat. Mater. 15, 937–950 (2016).10.1038/nmat4671 ↗
11. Jeong, J.-W. et al. Materials and optimized designs for human-machine interfaces via epidermal electronics. Adv. Mater. 25, 6839–6846 (2013).10.1002/adma.201301921 ↗
12. Jin, H. et al. Enhancing the performance of stretchable conductors for E-textiles by controlled Ink permeation. Adv. Mater. 29, 1605848 (2017).10.1002/adma.201605848 ↗
13. Wang, M. et al. Gesture recognition using a bioinspired learning architecture that integrates visual data with somatosensory data from stretchable sensors. Nat. Electron. 3, 563–570 (2020).10.1038/s41928-020-0422-z ↗
14. Matsuhisa, N., Chen, X., Bao, Z. & Someya, T. Materials and structural designs of stretchable conductors. Chem. Soc. Rev. 48, 2946–2966 (2019).10.1039/C8CS00814K ↗
15. Ozutemiz, K. B., Wissman, J., Ozdoganlar, O. B. & Majidi, C. EGaIn–metal interfacing for liquid metal circuitry and microelectronics integration. Adv. Mater. Interfaces 5, 1701596 (2018).10.1002/admi.201701596 ↗
16. Liu, S., Shah, D. S. & Kramer-Bottiglio, R. Highly stretchable multilayer electronic circuits using biphasic gallium-indium. Nat. Mater. 20, 851–858 (2021).10.1038/s41563-021-00921-8 ↗
17. Chun, K.-Y. et al. Highly conductive, printable and stretchable composite films of carbon nanotubes and silver. Nat. Nanotechnol. 5, 853–857 (2010).10.1038/nnano.2010.232 ↗
18. Xu, F. & Zhu, Y. Highly conductive and stretchable silver nanowire conductors. Adv. Mater. 24, 5117–5122 (2012).10.1002/adma.201201886 ↗
19. Matsuhisa, N. et al. Printable elastic conductors by in situ formation of silver nanoparticles from silver flakes. Nat. Mater. 16, 834–840 (2017).10.1038/nmat4904 ↗
20. Oh, J. Y., Kim, S., Baik, H.-K. & Jeong, U. Conducting polymer dough for deformable electronics. Adv. Mater. 28, 4455–4461 (2016).10.1002/adma.201502947 ↗
21. Wang, Y. et al. A highly stretchable, transparent, and conductive polymer. Sci. Adv. 3, e1602076 (2017).10.1126/sciadv.1602076 ↗
22. Savagatrup, S. et al. Plasticization of PEDOT:PSS by common additives for mechanically robust organic solar cells and wearable sensors. Adv. Funct. Mater. 25, 427–436 (2015).10.1002/adfm.201401758 ↗
23. Keplinger, C. et al. Stretchable, transparent, ionic conductors. Science 341, 984–987 (2013).10.1126/science.1240228 ↗
24. Larson, C. et al. Highly stretchable electroluminescent skin for optical signaling and tactile sensing. Science 351, 1071–1074 (2016).10.1126/science.aac5082 ↗
25. Chossat, J., Park, Y., Wood, R. J. & Duchaine, V. A Soft Strain Sensor Based on Ionic and Metal Liquids. IEEE Sens. J. 13, 3405–3414 (2013).10.1109/JSEN.2013.2263797 ↗
26. Ota, H. et al. Highly deformable liquid-state heterojunction sensors. Nat. Commun. 5, 5032 (2014).10.1038/ncomms6032 ↗
27. Jia, H., He, Y., Zhang, X., Du, W. & Wang, Y. Integrating ultra-thermal-sensitive fluids into elastomers for multifunctional flexible sensors. Adv. Electron. Mater. 1, 1500029 (2015).10.1002/aelm.201500029 ↗
28. Zhu, S. et al. Ultrastretchable fibers with metallic conductivity using a liquid metal alloy core. Adv. Funct. Mater. 23, 2308–2314 (2013).10.1002/adfm.201202405 ↗
29. Joshipura, I. D., Ayers, H. R., Majidi, C. & Dickey, M. D. Methods to pattern liquid metals. J. Mater. Chem. C. 3, 3834–3841 (2015).10.1039/C5TC00330J ↗
30. Dickey, M. D. Stretchable and soft electronics using liquid metals. Adv. Mater. 29, 1606425 (2017).10.1002/adma.201606425 ↗
31. Kubo, M. et al. Stretchable microfluidic radiofrequency antennas. Adv. Mater. 22, 2749–2752 (2010).10.1002/adma.200904201 ↗
32. Jeong, Y. R. et al. A skin-attachable, stretchable integrated system based on liquid GaInSn for wireless human motion monitoring with multi-site sensing capabilities. NPG Asia Mater. 9, e443–e443 (2017).10.1038/am.2017.189 ↗
33. Wang, Y. et al. Printable liquid-metal@PDMS stretchable heater with high stretchability and dynamic stability for wearable thermotherapy. Adv. Mater. Technol. 4, 1800435 (2019).10.1002/admt.201800435 ↗
34. Guan, L. et al. Stretchable-fiber-confined wetting conductive liquids as wearable human health monitors. Adv. Funct. Mater. 26, 4511–4517 (2016).10.1002/adfm.201600443 ↗
35. Park, Y., Chen, B. & Wood, R. J. Design and fabrication of soft artificial skin using embedded microchannels and liquid conductors. IEEE Sens. J. 12, 2711–2718 (2012).10.1109/JSEN.2012.2200790 ↗
36. Gao, Y. et al. Wearable microfluidic diaphragm pressure sensor for health and tactile touch monitoring. Adv. Mater. 29, 1701985 (2017).10.1002/adma.201701985 ↗
37. Li, Y., Feng, S., Cao, S., Zhang, J. & Kong, D. Printable liquid metal microparticle ink for ultrastretchable electronics. ACS Appl. Mater. Interfaces 12, 50852–50859 (2020).10.1021/acsami.0c15084 ↗
38. Dickey, M. D. et al. Eutectic gallium-indium (EGaIn): a liquid metal alloy for the formation of stable structures in microchannels at room temperature. Adv. Funct. Mater. 18, 1097–1104 (2008).10.1002/adfm.200701216 ↗
39. Lin, Y. et al. Vacuum filling of complex microchannels with liquid metal. Lab Chip 17, 3043–3050 (2017).10.1039/C7LC00426E ↗
40. Li, G., Parmar, M. & Lee, D.-W. An oxidized liquid metal-based microfluidic platform for tunable electronic device applications. Lab Chip 15, 766–775 (2015).10.1039/C4LC01013B ↗
41. Wu, S.-Y., Yang, C., Hsu, W. & Lin, L. 3D-printed microelectronics for integrated circuitry and passive wireless sensors. Microsyst. Nanoeng. 1, 15013 (2015).10.1038/micronano.2015.13 ↗
42. Andrews, J. B. et al. Patterned liquid metal contacts for printed carbon nanotube transistors. ACS Nano 12, 5482–5488 (2018).10.1021/acsnano.8b00909 ↗
43. Wang, J. et al. Omnidirectional printing of soft elastomer for liquid-state stretchable electronics. ACS Appl. Mater. Interfaces 11, 18590–18598 (2019).10.1021/acsami.9b04730 ↗
44. Boley, J. W., White, E. L., Chiu, G. T. C. & Kramer, R. K. Direct writing of gallium-indium alloy for stretchable electronics. Adv. Funct. Mater. 24, 3501–3507 (2014).10.1002/adfm.201303220 ↗
45. Park, Y.-G., An, H. S., Kim, J.-Y. & Park, J.-U. High-resolution, reconfigurable printing of liquid metals with three-dimensional structures. Sci. Adv. 5, eaaw2844 (2019).10.1126/sciadv.aaw2844 ↗
46. Chen, S., Wang, H., Zhao, R., Rao, W. & Liu, J. Liquid metal composites. Matter 2, 1446–1480 (2020).10.1016/j.matt.2020.03.016 ↗
47. Zhang, K., Kong, S., Li, Y., Lu, M. & Kong, D. Soft elastomeric composite materials with skin-inspired mechanical properties for stretchable electronic circuits. Lab Chip 19, 2709–2717 (2019).10.1039/C9LC00544G ↗
48. Yan, J. et al. Solution processable liquid metal nanodroplets by surface-initiated atom transfer radical polymerization. Nat. Nanotechnol. 14, 684–690 (2019).10.1038/s41565-019-0454-6 ↗
49. Hohman, J. et al. Directing substrate morphology via self-assembly: ligand-mediated scission of gallium-indium microspheres to the nanoscale. Nano Lett. 11, 5104–5110 (2011).10.1021/nl202728j ↗
50. Liu, S. et al. Laser sintering of liquid metal nanoparticles for scalable manufacturing of soft and flexible electronics. ACS Appl. Mater. Interfaces 10, 28232–28241 (2018).10.1021/acsami.8b08722 ↗
51. Tang, L., Mou, L., Zhang, W. & Jiang, X. Large-scale fabrication of highly elastic conductors on a broad range of surfaces. ACS Appl. Mater. Interfaces 11, 7138–7147 (2019).10.1021/acsami.8b20460 ↗
52. Boley, J. W., White, E. L. & Kramer, R. K. Mechanically sintered gallium–indium nanoparticles. Adv. Mater. 27, 2355–2360 (2015).10.1002/adma.201404790 ↗
53. Li, G., Wu, X. & Lee, D.-W. Selectively plated stretchable liquid metal wires for transparent electronics. Sens. Actuators B Chem. 221, 1114–1119 (2015).10.1016/j.snb.2015.07.062 ↗
54. Tang, J., Zhao, X., Li, J., Zhou, Y. & Liu, J. Liquid metal phagocytosis: intermetallic wetting induced particle internalization. Adv. Sci. 4, 1700024 (2017).10.1002/advs.201700024 ↗
55. Bowden, N., Brittain, S., Evans, A. G., Hutchinson, J. W. & Whitesides, G. M. Spontaneous formation of ordered structures in thin films of metals supported on an elastomeric polymer. Nature 393, 146–149 (1998).10.1038/30193 ↗
56. Yu, S., Sun, Y., Ni, Y., Zhang, X. & Zhou, H. Controlled formation of surface patterns in metal films deposited on elasticity-gradient PDMS substrates. ACS Appl. Mater. Interfaces 8, 5706–5714 (2016).10.1021/acsami.5b12369 ↗
57. Lee, H., Dellatore, S. M., Miller, W. M. & Messersmith, P. B. Mussel-inspired surface chemistry for multifunctional coatings. Science 318, 426 (2007).10.1126/science.1147241 ↗
58. Zhang, L. et al. Combination of bioinspiration: a general route to superhydrophobic particles. J. Am. Chem. Soc. 134, 9879–9881 (2012).10.1021/ja303037j ↗
59. Lee, C.-L. & Syu, C.-C. Ag nanoparticle as a new activator for catalyzing electroless copper bath with 2,2′-bipyridyl. Electrochim. Acta 56, 8880–8883 (2011).10.1016/j.electacta.2011.07.110 ↗
60. Hsu, P.-C. et al. Electrolessly deposited electrospun metal nanowire transparent electrodes. J. Am. Chem. Soc. 136, 10593–10596 (2014).10.1021/ja505741e ↗
61. Tang, J. et al. Gallium-based liquid metal amalgams: transitional-state metallic mixtures (TransM2ixes) with enhanced and tunable electrical, thermal, and mechanical properties. ACS Appl. Mater. Interfaces 9, 35977–35987 (2017).10.1021/acsami.7b10256 ↗
62. Zhou, Y. et al. Stretchable high-permittivity nanocomposites for epidermal alternating-current electroluminescent displays. ACS Mater. Lett. 1, 511–518 (2019).10.1021/acsmaterialslett.9b00376 ↗
63. Zhao, C. et al. Fully screen-printed, multicolor, and stretchable electroluminescent displays for epidermal electronics. ACS Appl. Mater. Interfaces 12, 47902–47910 (2020).10.1021/acsami.0c12415 ↗
64. Zhao, L., Chen, D. & Hu, W. Patterning of metal films on arbitrary substrates by using polydopamine as a UV-sensitive catalytic layer for electroless deposition. Langmuir 32, 5285–5290 (2016).10.1021/acs.langmuir.6b01118 ↗
65. Han, S. W., Kim, Y. & Kim, K. Dodecanethiol-derivatized Au/Ag bimetallic nanoparticles: TEM, UV/VIS, XPS, and FTIR analysis. J. Colloid Interface Sci. 208, 272–278 (1998).10.1006/jcis.1998.5812 ↗
66. Kato, Y. et al. Silver iodide formation in methyl ammonium lead iodide perovskite solar cells with silver top electrodes. Adv. Mater. Interfaces 2, 1500195 (2015).10.1002/admi.201500195 ↗
67. Yu, J., Zhang, J. & Liu, S. Ion-exchange synthesis and enhanced visible-light photoactivity of CuS/ZnS nanocomposite hollow spheres. J. Phys. Chem. C. 114, 13642–13649 (2010).10.1021/jp101816c ↗
68. Liu, S. et al. High-performance flexible quasi-solid-state supercapacitors realized by molybdenum dioxide@nitrogen-doped carbon and copper cobalt sulfide tubular nanostructures. Adv. Sci. 5, 1800733 (2018).10.1002/advs.201800733 ↗
69. Yang, C., Tartaglino, U. & Persson, B. N. J. Influence of surface roughness on superhydrophobicity. Phys. Rev. Lett. 97, 116103 (2006).10.1103/PhysRevLett.97.116103 ↗
70. Nosonovsky, M. & Bhushan, B. Roughness-induced superhydrophobicity: a way to design non-adhesive surfaces. J. Phys.: Condens. Matter 20, 225009 (2008).
71. Wu, S.-H. & Chen, D.-H. Synthesis of high-concentration Cu nanoparticles in aqueous CTAB solutions. J. Colloid Interface Sci. 273, 165–169 (2004).10.1016/j.jcis.2004.01.071 ↗
72. Lv, W. et al. Electrodeposition of nano-sized bismuth on copper foil as electrocatalyst for reduction of CO2 to formate. Appl. Surf. Sci. 393, 191–196 (2017).10.1016/j.apsusc.2016.10.017 ↗
73. Cui, Y. et al. Metallic bond-enabled wetting behavior at the liquid Ga/CuGa2 interfaces. ACS Appl. Mater. Interfaces 10, 9203–9210 (2018).10.1021/acsami.8b00009 ↗
74. Decker, E. L., Frank, B., Suo, Y. & Garoff, S. Physics of contact angle measurement. Colloid Surf. A 156, 177–189 (1999).10.1016/S0927-7757(99)00069-2 ↗