基于氧化纳米线阵列的压电纳米发电机
1School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA. zhong.wang@mse.gatech.edu
Science (New York, N.Y.)
|April 15, 2006
概括
研究人员使用压电氧化纳米线将纳米级机械能量转化为电力. 这种新的压电发电机实现了17-30%的效率,使纳米设备能供电.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 能源转换 能源转换
背景情况:
- 压电材料通过机械应力产生电力.
- 氧化纳米线具有独特的压电和半导体性能.
- 高效的纳米级能源采集对于为微型和纳米设备提供动力至关重要.
研究的目的:
- 用氧化纳米线证明纳米级机械能量的转化为电能.
- 研究压电氧化纳米线中发电机制.
- 为了评估基于纳米线的压电发电机的效率.
主要方法:
- 制造对齐的氧化纳米线阵列.
- 使用导电原子力显微镜的纳米线的偏移.
- 测量由于压电效应和Schottky屏障纠正而产生的电流.
主要成果:
- 成功地将机械能转化为电能.
- 在曲氧化纳米线中证明了应变场和电荷分离.
- 估计实现了17%至30%的发电效率.
结论:
- 压电氧化物纳米线可以有效地将纳米级机械能量转化为电力.
- 压电和半导体性能的合是能量转换机制的关键.
- 这项技术有可能使用环境机械,振动或液压能量为各种纳米设备提供动力.
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