使用布莱克值和修改的表面张力模型,揭示涂层纳米泡和低频超声波的动态
Ilia Mezdrokhin1, Tali Ilovitsh1
1Department of Biomedical Engineering, Tel Aviv University, Tel Aviv 6997801, Israel.
Physics in medicine and biology
|February 7, 2025
概括
一个新的模型准确地预测了低频超声波下的纳米泡行为,改善了生物医学应用的化值预测.
科学领域:
- 声学 声学 在声学方面
- 材料科学 材料科学 材料科学
- 生物医学工程 生物医学工程
背景情况:
- 像马莫坦特和布莱克值这样的现有模型在低频超声波 (<250 kHz) 下难以预测纳米泡 (NB) 的行为.
- 准确预测NB动态对于推进生物医学超声技术至关重要.
研究的目的:
- 在低频超声波下开发一个改进的纳米泡行为数值模型.
- 为了准确预测低声压下纳米泡的化值.
主要方法:
- 基于对纳米泡 (NBs) 的经验数据开发了一种修改的表面张力模型.
- 将修改后的模型集成到Marmottant框架中.
- 将增强的马莫坦特模型与布莱克值结合起来,以预测洞穴值.
主要成果:
- 85nm NBs 的实验性化值在 200 kPa (80 kHz) 和 1000 kPa (250 kHz) 时被观察到.
- 标准马尔莫坦特模型显著高估了实验值.
- 经过修改的模型与布莱克值相结合,准确地预测了在测试频率的低压下,在150kPa左右的化值.
结论:
- 开发的模型为了解纳米泡在低频率的声学行为提供了更准确的框架.
- 这一进步对于纳米气泡在生物医学超声波中的可靠应用至关重要.
- 这项研究弥合了纳米泡动力学的理论理解和实验验证方面的差距.
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