声动力疗法
空化
多孔硅
材料科学
成核
纳米颗粒
水溶液
化学工程
硅
多孔性
纳米技术
复合材料
化学
光电子学
有机化学
光动力疗法
物理
工程类
机械
作者
Andrey Sviridov,Л. А. Осминкина,А. Л. Николаев,A. A. Kudryavtsev,A. N. Vasiliev,V. Yu. Timoshenko
摘要
A significant decrease of the cavitation threshold in aqueous suspensions of porous silicon nanoparticles (PSi NPs) with sizes about 100 nm as compared with pure water was observed for ultrasound irradiation (USI) with therapeutic frequency (0.88 MHz) and intensities (about 1 W/cm2). This effect is explained by porous morphology of PSi NPs, which promotes the nucleation of cavitation bubbles. In vitro experiments revealed a suppression of the proliferation of cancer cells with the introduced PSi NPs after exposure to USI related to the enhanced cavitation processes, which led to the cell destruction. The obtained results demonstrate that PSi NPs are prospective for applications as sonosensitizers in mild cancer therapy.
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