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Related Concept Videos

Mass Analyzers: Common Types01:19

Mass Analyzers: Common Types

The quadrupole mass analyzer consists of four cylindrical metal rods arranged in a diamond carrying a DC voltage and a radio-frequency AC voltage. The motion of ions through the quadrupole depends on the field strength, causing only ions of a certain m/z to resonate successfully and strike the detector at a given field strength. Though the transmission rate for these analyzers is high, the exact elemental composition of the sample is not determined because of low resolution; however, they are...

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Free-form Light Actuators — Fabrication and Control of Actuation in Microscopic Scale
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Electromechanical linear actuators for Fourier transform spectrometers: a concept for extended range,

S P Sandford, W S Luck, W W Rohrbach

    Applied Optics
    |November 19, 2010
    PubMed
    Summary

    A new piezoelectric actuator offers precise, linear motion for scientific instruments. This all-solid-state device improves efficiency, size, and mass compared to traditional motor-based systems.

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    Last Updated: Jun 6, 2026

    Free-form Light Actuators — Fabrication and Control of Actuation in Microscopic Scale
    08:17

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    Published on: May 25, 2016

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    Area of Science:

    • Physics
    • Materials Science
    • Engineering

    Background:

    • Traditional actuators (motors, lead screws) require rotary-to-linear conversion, impacting efficiency, size, and mass.
    • Piezoelectric mechanics and advanced materials offer potential for improved electromechanical actuation.

    Purpose of the Study:

    • To develop and demonstrate an all-solid-state electromechanical actuator for precise mirror position control in Fourier transform spectrometers.
    • To leverage recent advances in piezoelectric materials and mechanics for enhanced actuator performance.

    Main Methods:

    • Synthesizing advances in materials, materials processing, and piezoelectric mechanics.
    • Designing an all-solid-state electromechanical actuator for linear motion control.
    • Integrating the actuator for Fourier transform spectrometer mirror positioning.

    Main Results:

    • Demonstrated a highly controllable, extended linear motion actuator.
    • Achieved 1% velocity control over a 0.5 cm range at 1 cm/s.
    • The actuator is inherently linear, offering improvements in efficiency, size, and mass.

    Conclusions:

    • The developed piezoelectric actuator provides a significant advancement for Fourier transform spectrometer applications.
    • The all-solid-state design offers superior performance over conventional actuators.
    • Feasibility of scaling the actuator to a 4 cm range and 4 cm/s velocity is discussed.