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Updated: Jun 18, 2026

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Nanomanipulation using silicon photonic crystal resonators.

Sudeep Mandal1, Xavier Serey, David Erickson

  • 1School of Applied and Engineering Physics, Cornell University, Ithaca, New York 14853, USA.

Nano Letters
|December 5, 2009
PubMed
Summary

Researchers developed a novel nanoscale optical trap using silicon photonic crystals. This new method offers significantly stronger and stiffer optical forces for precise manipulation of nanoparticles and molecules.

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Area of Science:

  • Nanotechnology
  • Photonics
  • Optics

Background:

  • Optical tweezers are established tools for microscale manipulation.
  • Existing nanoscale optical trapping techniques face limitations in complexity and precision.
  • Near-field approaches enhance optical forces by confining light to subwavelength volumes.

Purpose of the Study:

  • To introduce a new class of nanoscale optical traps.
  • To overcome limitations of current near-field optical manipulation techniques.
  • To enable precise manipulation of nanoscale objects.

Main Methods:

  • Utilizing optical resonance in one-dimensional silicon photonic crystals.
  • Exploiting both propagating and stationary light modes in a coupled waveguide-resonator system.

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  • Demonstrating trapping and manipulation of dielectric nanoparticles (48 nm and 62 nm).

    • Main Results:

    • Successful trapping and manipulation of dielectric nanoparticles.
    • Demonstrated ability to handle larger nanoparticles by combining waveguide and resonator properties.
    • Achieved optical traps orders of magnitude stronger and stiffer than conventional and other near-field techniques due to field amplification.

    Conclusions:

    • The developed silicon photonic crystal optical trap represents a significant advancement in nanoscale manipulation.
    • This platform offers enhanced force and stiffness for precise control of nanoparticles.
    • It lays the foundation for future all-optical manipulation of single molecules and directed nanoscale assembly.