黄金纳米颗粒的低度作为电荷载体在基于水泥的压电材料中
Daniel A Triana-Camacho1, Oscar A Mendoza Reales2, Jorge H Quintero-Orozco1
1Escuela de Física, Universidad Industrial de Santander, Cra 27 Calle 9, Bucaramanga 680002, Colombia.
Materials (Basel, Switzerland)
|April 9, 2024
概括
将金纳米粒子 (Au NPs) 添加到水泥复合材料中,可显著提高结构健康监测 (SHM) 的电导率和压电特性. 这增强了智能结构中的自动供电传感能力.
科学领域:
- 材料科学 材料科学 材料科学
- 土木工程 土木工程是指土木工程.
- 纳米技术 纳米技术
背景情况:
- 压电式水泥复合材料对结构健康监测 (SHM) 和自动供电应用具有前景.
- 水泥矩阵的低电导率阻碍了这些复合材料的性能.
- 黄金纳米粒子 (Au NPs) 具有改善电气和压电性能的潜力.
研究的目的:
- 研究低度金纳米颗粒 (Au NPs) 对基于水泥的复合材料的影响.
- 评估AU NPs在电气和压电特性上的作用.
- 评估固化在恒定电场下对这些属性的影响.
主要方法:
- 在基于水泥的复合材料中加入Au NPs (442和658 ppm).
- 电阻谱法用于测量极化电阻和压电阻特性.
- 在机械负荷下测量开放电路电位,以评估压电活动.
主要成果:
- 与参考样本相比,总电阻减少了近四倍 (1.5 ± 0.2 kΩ).
- 压电电压参数 (g33) 得到了57倍的改善.
- 归因于Au NP度和电场固化的增强.
结论:
- 低度的Au NPs可以创建高度导电的水泥矩阵.
- NP作为有效的电荷载体,增强压电行为.
- 该研究表明,开发用于SHM的先进压电式水泥复合材料的可行方法.
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