具有高度坚固和抗应变的薄膜导体,具有脆性材料
Kai Chen1, Linyuan Zhang2, Kai Wu1
1State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, P. R. China.
Nano letters
|July 6, 2023
概括
研究人员为电子产品开发了抗压不敏感的薄膜导体. 使用一种新的裂控制策略,这些导体在极端拉伸,曲甚至损坏的情况下保持稳定的电性能.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
- 电气工程 电气工程
背景情况:
- 可伸缩导体对于可穿戴电子产品,软机器人和生物一体化设备至关重要.
- 软基板上的脆薄膜导体通常由于机械不兼容而失败,导致电气断开.
- 现有的解决方案在各种变形下难以保持导电性.
研究的目的:
- 开发压力不敏感的薄膜导体,在各种变形下具有稳定的电性能.
- 为了克服弹性基板上的脆薄膜导体的局限性.
- 为了在灵活和可拉伸的电子应用中实现可靠的电气功能.
主要方法:
- 提出了一种用于薄膜导体的新型外平面裂控制策略.
- 使用的导电脆性材料包括纳米晶体金属 (Cu,Ag,Mo) 和透明氧化物 (ITO).
- 嵌入膜诱导基板裂纹和液体金属诱导的电自修机制.
主要成果:
- 在金属薄膜导体中实现了超高的初始导电性 (1.3 × 10^5 S cm^-1).
- 在0-130%的应变范围内,证明了微不足道的阻力变化 (R/R0 = 1.5).
- 导体在多模式变形 (拉伸,曲,扭曲) 和机械损坏 (切割,刺穿) 的情况下保持功能.
结论:
- 这种新的裂控制策略使薄膜导体的电压不敏感性能成为可能.
- 基于金属薄膜的导体具有特殊的伸展性,导电性和自我修复能力.
- 展示了这些导体在抗应变柔性发光二极管显示器中的实际应用.
更多相关视频
11:09Scalable Solution-processed Fabrication Strategy for High-performance, Flexible, Transparent Electrodes with Embedded Metal Mesh
Published on: June 23, 2017
10.2K
08:00Chemical Synthesis of Porous Barium Titanate Thin Film and Thermal Stabilization of Ferroelectric Phase by Porosity-Induced Strain
Published on: March 27, 2018
11.1K
相关概念视频
01:24Stress-Strain Diagram - Brittle Materials
2.6K
Brittle materials, including glass, cast iron, and stone, exhibit unique characteristics. They fracture without considerable change in their elongation rate, indicating that their breaking and ultimate strength are equivalent. Such materials also show lower strain levels at the point of rupture. The failure in brittle materials predominantly results from normal stresses, as evidenced by the rupture created along a surface perpendicular to the applied load. These materials do not display...
2.6K
01:25Yield Criteria for Ductile Materials under Plane Stress
190
In designing structural elements and machine parts using ductile materials, it is crucial to ensure that these components withstand applied stresses without yielding. Yielding is initially determined through a tensile test, which evaluates the material's response to uniaxial stress. However, tensile stress is insufficient when components face biaxial or plane stress conditions This condition requires advanced criteria to predict failure.
The Maximum Shearing Stress Criterion, also known as...
The Maximum Shearing Stress Criterion, also known as...
190