Repairable and Reconfigurable Structured Liquid Circuits

Author:

Fink Zachary12,Kim Paul Y.2,Han Jiale3,Wu Xuefei2,Popple Derek24,Zhu Shipei2,Xue Han2,Zettl Alex24,Ashby Paul D.25,Helms Brett A.25,Russell Thomas P.126ORCID

Affiliation:

1. Department of Polymer Science and Engineering University of Massachusetts Amherst Amherst MA 01003 USA

2. Materials Sciences Division Lawrence Berkeley National Laboratory Berkeley CA 94720 USA

3. Department of Materials Science and Engineering University of California Berkeley CA 94720 USA

4. Department of Physics University of California Berkeley CA 94720 USA

5. Molecular Foundry Lawrence Berkeley National Laboratory Berkeley CA 94720 USA

6. Advanced Institute for Materials Research (WPI‐AIMR) Tohoku University 2‐1‐1 Katahira, Aoba Sendai 980‐8577 Japan

Abstract

AbstractThe advance of printed electronics is significantly bolstered by the development of liquid‐state electronics that overcome the inherent limitations in flexibility and reconfigurability of solid‐state electronics. By integrating the biocompatibility and conductivity of sulfonated polyaniline (S‐PANI) and phytic acid (PA) with the reconfigurability of structured liquids, highly conductive all‐liquid threads are developed. The dense packing and overlap of PA/S‐PANI complexes at an oil/water interface promotes in‐plane electron transport, and standard four‐point probe measurements of PA/S‐PANI interfacial assemblies demonstrate enhanced electrical properties. Notably, the rapid jetting of the ink phase into the matrix phase allows for liquid threads to be printed, enabling the fabrication of large‐scale, conductive pathways between two electrodes and liquid circuits. Upon mechanical cleavage of the liquid wires, circuits can be broken, but will easily self‐repair using an electric field, making this motif useful in the design of switches as well as restoring conductive pathways in series or in parallel. The demonstrated flexibility and reconfigurability these PA/S‐PANI wires possess hold significant promise for their practical use in the design of flexible and adaptive bioelectronics that can be repaired on demand, signifying a transformative step in the evolution of liquid electronic materials.

Funder

U.S. Department of Energy

Office of Science

Basic Energy Sciences

Publisher

Wiley

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