High-speed, clinical-scale microfluidic generation of stable phase-change droplets for gas embolotherapy.
High-speed, clinical-scale microfluidic generation of stable phase-change droplets for gas embolotherapy.
复制标题
DOI:
10.1039/c1lc20615j
复制
发表时间:
2011-12-07
期刊:
影响因子:
6.1
通讯作者:
Lee AP
中科院分区:
文献类型:
--
作者:
Bardin D;Martz TD;Sheeran PS;Shih R;Dayton PA;Lee AP
In this study we report on a microfluidic device and droplet formation regime capable of generating clinical-scale quantities of droplet emulsions suitable in size and functionality for in vivo therapeutics. By increasing the capillary number – based on the flow rate of the continuous outer phase – in our flow-focusing device, we examine three modes of droplet breakup: geometry-controlled, dripping, and jetting. Operation of our device in the dripping regime results in the generation of highly monodisperse liquid perfluoropentane droplets in the appropriate 3–6 µm range at rates exceeding 105 droplets per second. Based on experimental results relating droplet diameter and the ratio of the continuous and dispersed phase flow rates, we derive a power series equation, valid in the dripping regime, to predict droplet size by Dd ≅ 27(QC/QD)−5/12. The volatile droplets in this study are stable for weeks at room temperature yet undergo rapid liquid-to-gas phase transition, and volume expansion, above a uniform thermal activation threshold. The opportunity exists to potentiate locoregional cancer therapies such as thermal ablation and percutaneous ethanol injection using thermal or acoustic vaporization of these monodisperse phase-change droplets to intentionally occlude the vessels of a cancer.
登录
查看更多内容
影响因子:
3.7
作者:
Fabiilli, Mario L.;Lee, James A.;Kripfgans, Oliver D.;Carson, Paul L.;Fowlkes, J. Brian
通讯作者:
Fowlkes, J. Brian
影响因子:
--
作者:
Kalman, D;Varenhorst, E
通讯作者:
Varenhorst, E
影响因子:
4.6
作者:
Cubaud, Thomas;Mason, Thomas G.
通讯作者:
Mason, Thomas G.
DOI:
10.1109/tuffc.2005.1503996
发表时间:
2005-07-01
影响因子:
3.6
作者:
Kripfgans, OD;Orifici, CM;Fowlkes, JB
通讯作者:
Fowlkes, JB
DOI:
10.1109/tuffc.2002.1009331
发表时间:
2002-06-01
影响因子:
3.6
作者:
Kripfgans, OD;Fowlkes, JB;Carson, PL
通讯作者:
Carson, PL