金瓦特里特在气泡中的光热传输
Hod Gilad1,2, Hani Barhum3,4,5, Andrey Ushkov3,4
1Department of Electrical Engineering, Tel Aviv University, 69978, Ramat Aviv, Tel Aviv, Israel. hodgilad@mail.tau.ac.il.
Scientific reports
|July 27, 2023
概括
研究人员利用激光束和金色装饰的纳米粒子来创建稳定,自行驱动的微泡. 这些光热效应能够精确控制粒子动态,为先进的药物递送系统铺平了道路.
科学领域:
- 光学和光子学 在光学和光子学.
- 纳米技术纳米技术
- 物理化学 物理化学
背景情况:
- 激光束通过电磁力控制微米级物体.
- 环境诱导的热效应也可以影响粒子动态.
- 热毛细管马兰戈尼效应在纳米粒子周围的气泡上产生远程力.
研究的目的:
- 探索热毛细管马兰戈尼效应在金纳米粒子周围的气泡上.
- 用电磁和热相互作用的平衡来证明控制气泡动力学.
- 研究光热效应在药物输送等先进应用中的潜力.
主要方法:
- 用金纳米种子装饰碳酸 (瓦特里特) 纳米颗粒以调整光学吸收.
- 使用激光束来控制纳米粒子温度并诱导气泡形成.
- 观察泡的稳定性,尺寸的维护和向激光聚焦方向的移动.
主要成果:
- 一个稳定的微米尺度的泡被围绕着金色的瓦特里特纳米粒子创建.
- 随着时间的推移,泡大小保持稳定,即使在激光被关闭后.
- 泡在超过400微米的距离上向激光聚焦方向游泳.
结论:
- 光热效应提供了高效的运输和稳定的泡创建.
- 这种方法可以精确控制粒子-流体相互作用.
- 潜在的应用包括纳米工程药物输送囊的增强功能,朝着theranostics迈进.
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