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Related Experiment Videos

Localized chemical release from an artificial synapse chip.

Mark C Peterman1, Jaan Noolandi, Mark S Blumenkranz

  • 1Department of Applied Physics, Stanford University, CA 94305-4090, USA. peterman@alcestech.com

Proceedings of the National Academy of Sciences of the United States of America
|June 26, 2004
PubMed
Summary

This study introduces an artificial synapse chip for precise chemical compound delivery. The device enables controlled fluid ejection and withdrawal, advancing neural interfaces and therapeutic applications.

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Area of Science:

  • Biomedical Engineering
  • Neuroscience
  • Microfluidics

Background:

  • Precise chemical compound release is crucial for advanced therapeutics and biological research.
  • Existing biomedical devices often require controlled delivery of chemical compounds.
  • Controlling chemical gradients is vital for studying cellular microenvironments and processes like chemotaxis.

Purpose of the Study:

  • To develop a novel device capable of repeatable, multi-location chemical compound delivery on a chip.
  • To demonstrate the device's capability for precise fluid ejection and withdrawal.
  • To present a prototype neural interface for advanced stimulation applications.

Main Methods:

  • Utilizing electroosmosis to drive flow through microfluidic channels.

Related Experiment Videos

  • Pulsing minute quantities of bradykinin solution through micro-apertures onto PC12 cells.
  • Employing Ca(2+)-sensitive fluorescent dye for cell stimulation and pH imaging for fluid dynamics verification.

    • Main Results:

    • Demonstrated repeatable delivery of chemical compounds at multiple locations on a chip surface.
    • Successfully stimulated individual PC12 cells using the device.
    • Provided computational and experimental verification of fluid ejection and withdrawal.

    Conclusions:

    • The developed "artificial synapse chip" represents a new paradigm for neural stimulation.
    • This technology has potential applications in treating neurological disorders such as macular degeneration.
    • The device offers a powerful tool for both clinical therapeutics and fundamental biological research.