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Updated: May 16, 2026

A Femtoliter Droplet Array for Massively Parallel Protein Synthesis from Single DNA Molecules
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Published on: June 20, 2020

Time-variant 1D photonic crystals using flowing microdroplets.

Zefeng Chen1, Zehui Yong, Chi Wah Leung

  • 1Department of Applied Physics and Materials Research Center, The Hong Kong Polytechnic University, Hong Kong SAR, China.

Optics Express
|November 29, 2012
PubMed
Summary

We introduce a novel time-variant photonic crystal using microdroplets in microfluidics. This dynamic structure exhibits unique light interactions, offering potential for advanced optofluidic devices.

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Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
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Published on: November 30, 2012

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Last Updated: May 16, 2026

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Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
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Published on: November 30, 2012

Area of Science:

  • Photonics
  • Microfluidics
  • Materials Science

Background:

  • Photonic crystals rely on periodic refractive index variations to control light.
  • Existing photonic crystals are typically static structures.
  • Optofluidic systems integrate optical functionalities with microfluidic devices.

Purpose of the Study:

  • To propose and theoretically investigate a novel time-variant photonic crystal.
  • To explore the tunability of its optical properties in real-time.
  • To assess its potential applications in optofluidics.

Main Methods:

  • Utilizing simulations to model a photonic crystal formed by wavelength-scale microdroplets in a microfluidic channel.
  • Investigating the photonic bandgap arising from a 1D periodic refractive index perturbation.
  • Exploring real-time tuning of periodicity, volume fraction, and composition via hydrodynamic or pneumatic methods.

Main Results:

  • The proposed time-variant photonic crystal exhibits abnormal energy evolution distinct from static structures.
  • Simulations confirm the feasibility of real-time tuning of structural parameters.
  • The structure generates a photonic bandgap based on its dynamic periodic refractive index.

Conclusions:

  • A novel time-variant photonic crystal based on microdroplets in microfluidics is proposed.
  • This dynamic structure offers unique optical properties and tunability.
  • Potential applications include light modulation, confinement, and fundamental studies in time-variant optofluidics.