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通过蒸发-冷凝介导的激光打印和 Zn 纳米颗粒的烧结实现生物可吸收导体的低成本制造。

Low-Cost Manufacturing of Bioresorbable Conductors by Evaporation-Condensation-Mediated Laser Printing and Sintering of Zn Nanoparticles.

机构信息

Department of Mechanical and Aerospace Engineering, Missouri University of Science and Technology, Rolla, MO, 65401, USA.

Department of Biomedical Engineering, Tianjin University, 92 Weijin Road, Tianjin, 300072, China.

出版信息

Adv Mater. 2017 Jul;29(26). doi: 10.1002/adma.201700172. Epub 2017 Apr 24.

Abstract

Currently, bioresorbable electronic devices are predominantly fabricated by complex and expensive vacuum-based integrated circuit (IC) processes. Here, a low-cost manufacturing approach for bioresorbable conductors on bioresorbable polymer substrates by evaporation-condensation-mediated laser printing and sintering of Zn nanoparticle is reported. Laser sintering of Zn nanoparticles has been technically difficult due to the surface oxide on nanoparticles. To circumvent the surface oxide, a novel approach is discovered to print and sinter Zn nanoparticle facilitated by evaporation-condensation in confined domains. The printing process can be performed on low-temperature substrates in ambient environment allowing easy integration on a roll-to-roll platform for economical manufacturing of bioresorbable electronics. The fabricated Zn conductors show excellent electrical conductivity (≈1.124 × 10 S m ), mechanical durability, and water dissolvability. Successful demonstration of strain gauges confirms the potential application in various environmentally friendly sensors and circuits.

摘要

目前,生物可吸收电子设备主要通过复杂且昂贵的基于真空的集成电路 (IC) 工艺制造。在这里,报道了一种通过蒸发-冷凝介导的激光打印和 Zn 纳米颗粒烧结在生物可吸收聚合物衬底上制造生物可吸收导体的低成本制造方法。由于纳米颗粒表面的氧化物,激光烧结 Zn 纳米颗粒在技术上具有挑战性。为了克服表面氧化物,发现了一种通过在受限区域蒸发-冷凝来打印和烧结 Zn 纳米颗粒的新方法。该打印过程可以在环境温度的低温衬底上进行,允许在卷对卷平台上轻松集成,从而实现生物可吸收电子产品的经济制造。所制造的 Zn 导体表现出优异的导电性(≈1.124×10 S m)、机械耐久性和水溶胀性。应变计的成功演示证实了其在各种环保传感器和电路中的潜在应用。

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