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Related Experiment Videos

Mechanical stimulation and micromanipulation with piezoelectric bimorph elements

D P Corey, A J Hudspeth

    Journal of Neuroscience Methods
    |December 1, 1980
    PubMed
    Summary
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    Piezoelectric bimorph elements create precise mechanical stimulators and micromanipulators. These devices offer nanometer-level control for scientific applications, overcoming limitations like resonance and creep.

    Area of Science:

    • Electromechanical Engineering
    • Materials Science
    • Nanotechnology

    Background:

    • Piezoelectric bimorph elements are cost-effective electromechanical transducers.
    • They are adaptable for creating precise mechanical stimulators and micromanipulators.

    Purpose of the Study:

    • To detail the construction and capabilities of piezoelectric bimorph-based mechanical stimulators.
    • To present micromanipulators utilizing bimorph elements for high-precision 3D motion control.
    • To address and offer solutions for inherent bimorph limitations.

    Main Methods:

    • Development of mechanical stimulators with displacements from nanometers to millimeters and forces up to 7g.
    • Design of micromanipulators for remote electrical control and sub-micrometer positioning.

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  • Implementation of compensation techniques for mechanical resonance and creep.
  • Utilization of advanced measurement methods for high-resolution motion analysis.

    • Main Results:

    • Mechanical stimulators achieve graded displacements and rapid step responses (<100 microseconds).
    • Micromanipulators provide stable 3D motion control, suitable for microelectrodes and dissection probes.
    • Compensation strategies effectively mitigate resonance and creep issues.
    • Motion measurement techniques achieve 10 nm spatial and 2 microsecond temporal resolution.

    Conclusions:

    • Piezoelectric bimorphs are highly versatile for creating advanced electromechanical devices.
    • The developed methods enable precise control and measurement for demanding scientific applications.
    • Bimorph limitations can be overcome, expanding their utility in nanotechnology and microsystems.