Generation of oxygen gradients with arbitrary shapes in a microfluidic device.

Generation of oxygen gradients with arbitrary shapes in a microfluidic device.
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DOI:
10.1039/b920401f
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发表时间:
2010-02-07
期刊:
影响因子:
6.1
通讯作者:
Groisman A
Groisman A
中科院分区:
工程技术1区
文献类型:
--
作者:
Adler M;Polinkovsky M;Gutierrez E;Groisman A

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我们提出了一个系统,包括一个微流控装置制成的透气性聚二甲基硅氧烷(PDMS)与两层微通道和计算机控制的多通道气体混合器。通过使具有所需氧浓度的气体混合物直接流过流动通道上方的气体通道来施加装置的液体填充流动通道中的氧浓度。具有不同的线性,指数,和非单调形状的氧气梯度中产生相同的液体填充的微通道和重新配置在真实的时间。该系统可用于研究细胞的定向迁移以及在氧梯度下细胞和组织培养的发育。
We present a system consisting of a microfluidic device made of gas-permeable polydimethylsiloxane (PDMS) with two layers of microchannels and a computer-controlled multi-channel gas mixer. Concentrations of oxygen in the liquid-filled flow channels of the device are imposed by flowing gas mixtures with desired oxygen concentrations through gas channels directly above the flow channels. Oxygen gradients with different linear, exponential, and non-monotonic shapes are generated in the same liquid-filled microchannel and reconfigured in real time. The system can be used to study directed migration of cells and the development of cell and tissue cultures under gradients of oxygen.
DOI: 10.1039/b816191g
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