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A microfluidic flow-cell for the study of the ultrafast dynamics of biological systems

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摘要

The study of biochemical dynamics by ultrafast spectroscopic methods is often restricted by the limited amount of liquid sample available, while the high repetition rate of light sources can induce photodamage. In order to overcome these limitations, we designed a high flux, sub-ml, capillary flow-cell. While the 0.1 mm thin window of the 0.5 mm cross-section capillary ensures an optimal temporal resolution and a steady beam deviation, the cell-pump generates flows up to ~0.35 ml/s that are suitable to pump laser repetition rates up to ~14 kHz, assuming a focal spot-diameter of 100 μm. In addition, a decantation chamber efficiently removes bubbles and allows, via septum, for the addition of chemicals while preserving the closed atmosphere. The minimal useable amount of sample is ~250 μl.

著录项

  • 来源
    《Review of Scientific Instruments》 |2014年第10期|103118-1-103118-4|共4页
  • 作者单位

    Ecole Polytechnique Federale de Lausanne (EPFL), Laboratoire de Spectroscopie Ultrarapide, ISIC, Faculte des Sciences de Base, Station 6, 1015 Lausanne, Switzerland;

    Aix Marseille Universite, CNRS, CEA, UMR 7265 Biologie Vegetale et Microbiologie Environnementales, 13009 Marseille, France;

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  • 原文格式 PDF
  • 正文语种 英语
  • 中图分类 仪器、仪表;
  • 关键词

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