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Related Experiment Videos

A low cost high intensity flash device for photolysis experiments.

G Rapp1, K Güth

  • 1Abteilung Biophysik, Max-Planck-Institut für medizinische Forschung, Heidelberg, Federal Republic of Germany.

Pflugers Archiv : European Journal of Physiology
|February 1, 1988
PubMed
Summary

Researchers developed an affordable flash photolysis device for near UV light experiments. This inexpensive system offers a viable alternative to expensive lasers for applications not requiring ultra-short light pulses.

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Area of Science:

  • Biophysics
  • Photochemistry
  • Muscle Physiology

Background:

  • Flash photolysis experiments require high-intensity near-UV light sources.
  • Existing laser systems are often bulky and expensive.

Purpose of the Study:

  • To describe a simple, inexpensive flash device for flash photolysis.
  • To evaluate its performance as an alternative to laser systems.

Main Methods:

  • Utilized stored electrical energy and a specific optical arrangement.
  • Varied voltage and capacitance to alter light output.
  • Applied the device to relax skeletal and smooth muscle fibers in rigor state.

Main Results:

  • Achieved a light output difference of over a factor of two by adjusting voltage and capacitance.

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  • Successfully released up to 2 mM ATP from 12.5 mM caged-ATP.
  • Demonstrated the device's utility in muscle fiber relaxation studies.

    • Conclusions:

    • The developed flash device is a cost-effective alternative to lasers for flash photolysis when ultra-short pulses are not essential.
    • The system provides sufficient light intensity and control for specific biochemical and physiological applications.
    • Enables precise ATP release for studying muscle fiber mechanics.