微气泡
微观力学
材料科学
微流控
聚二甲基硅氧烷
弹性体
制作
壳体(结构)
多孔介质
复合材料
机械压缩
纳米技术
多孔性
生物医学工程
超声波
声学
医学
物理
替代医学
病理
复合数
作者
Wynter J. Duncanson,Thomas E. Kodger,Sahab Babaee,Grant M. Gonzalez,David A. Weitz,Katia Bertoldi
出处
期刊:Langmuir
[American Chemical Society]
日期:2015-03-13
卷期号:31 (11): 3489-3493
被引量:18
摘要
We use droplet microfluidics to produce monodisperse elastomeric microbubbles consisting of gas encapsulated in a polydimethylsiloxane shell. These microbubbles withstand large, repeated deformations without rupture. We perform μN-scale compression tests on individual microbubbles and find their response to be highly dependent on the shell permeability; during deformation, the pressure inside impermeable microbubbles increases, resulting in an exponential increase in the applied force. Finite element models are used to interpret and extend these experimental results enabling the design and development of deformable microbubbles with a predictable mechanical response. Such microbubbles can be designed to repeatedly transit through the narrow constrictions found in a porous medium functioning as probes of the local pressure.
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