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Water-Sintered Transient Nanocomposites Used as Electrical Interconnects for Dissolvable Consumer Electronics. | LitMetric

AI Article Synopsis

  • - Rapid advancements in electronic technology have increased the speed at which new gadgets are developed, leading to a surge in electronic waste that is challenging to recycle and harmful to the environment and human health.
  • - Researchers are exploring transient electronics that can dissolve in water as a possible solution to electronic waste, but effective methods for creating high-performing transient consumer devices have yet to be established.
  • - This study introduces bimetallic transient nanocomposites that can be printed and water-sintered without external energy, resulting in high-performance conductive PCB circuits and the development of a dissolvable smartwatch that matches the functionality of traditional models but decomposes in water within 40 hours.

Article Abstract

Rapid development of electronic technology shortens the development time for new products and accelerates the obsolescence of consumer electronics, resulting in the explosive growth of electronic waste that is difficult to recycle and hazardous to the environment and human health. Transient electronics that can dissolve in water may potentially be adopted to tackle the issues of electronic waste; however, promising approaches to yield large-scale and high-performance transient consumer electronics have not yet been developed. Here, the joint effect of galvanic corrosion and redeposition has been utilized to develop bimetallic transient nanocomposites, which can be printed and water-sintered to yield high-performance transient PCB circuits with excellent electrical conductivity and mechanical robustness. The entire sintering process requires no external energy and strict environmental conditions. The achieved PCB circuits offer a conductivity of 307,664.4 S/m that is among the highest in comparison with other printed transient circuits. The supreme performance of the transient circuits eventually leads to the first dissolvable smartwatch that offers the same functions and similar performance as conventional smartwatches and dissolves in water within 40 h. The joint effect of galvanic corrosion and redeposition between two metals with distinct activities leads to novel nanocomposites and processing techniques of transient electronics. The resulting high-performance transient devices may reshape the appearance of consumer electronics and reform the electronics recycling industry by reducing recycling costs and minimizing environmental pollution and health hazard.

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Source
http://dx.doi.org/10.1021/acsami.1c07102DOI Listing

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