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Updated: Jun 12, 2026

Preparation of Liquid Crystal Networks for Macroscopic Oscillatory Motion Induced by Light
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Development of a spatial light modulator: a randomly addressed liquid-crystal-over-nMOS array.

D J McKnight, D G Vass, R M Sillitto

    Applied Optics
    |June 18, 2010
    PubMed
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    A new 50x50 pixel spatial light modulator (SLM) using a silicon backplane and liquid crystals was developed. This device features individual pixel memory, advancing high-performance SLM technology.

    Area of Science:

    • Optoelectronics
    • Materials Science
    • Semiconductor Device Physics

    Background:

    • Spatial light modulators (SLMs) are crucial for optical information processing.
    • Integrating memory at the pixel level is key for advanced SLM performance.
    • Nematic liquid crystals offer a viable light modulation mechanism.

    Purpose of the Study:

    • To describe the construction of a novel 50x50 pixel spatial light modulator.
    • To detail the design and electrical evaluation of an active silicon backplane for SLMs.
    • To assess the performance of the new SLM in comparison to a prototype.

    Main Methods:

    • Fabrication of a 50x50 pixel array using 1.5-microm nMOS technology.
    • Implementation of a hybrid field effect with nematic liquid crystals for light modulation.

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    Published on: September 20, 2017

    An Electrochemical Cholesteric Liquid Crystalline Device for Quick and Low-Voltage Color Modulation
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  • Integration of an individual memory cell within each pixel.
  • Electrical evaluation of the pixel array and performance testing.

    • Main Results:

    • Successful construction of a 50x50 pixel spatial light modulator.
    • Demonstration of an active silicon backplane with integrated pixel memory.
    • Comparison of the 50x50 device performance against a 16x16 prototype.

    Conclusions:

    • The developed 50x50 SLM represents progress towards high-performance devices.
    • Onboard pixel memory enhances the capabilities of spatial light modulators.
    • The hybrid field effect with nematic liquid crystals is effective for light modulation in this architecture.