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Related Experiment Video

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In vivo Imaging of Biological Tissues with Combined Two-Photon Fluorescence and Stimulated Raman Scattering Microscopy

In vivo Imaging of Biological Tissues with Combined Two-Photon Fluorescence and Stimulated Raman Scattering Microscopy

Published on: December 20, 2021

Biological tissue-inspired tunable photonic fluid.

Xinzhi Li¹, Amit Das¹, Dapeng Bi²

¹Department of Physics, Northeastern University, Boston, MA 02115.

Proceedings of the National Academy of Sciences of the United States of America

|June 13, 2018

Summary

We developed tunable amorphous materials inspired by cell packing, featuring a complete photonic bandgap. This photonic bandgap remains stable even when the material transitions to a fluid state.

Keywords:

bioinspired materials cells metamaterials photonic materials tissue mechanics

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Area of Science:

Materials Science
Condensed Matter Physics
Biophysics

Background:

Cellular packing in biological tissues influences material properties.
Photonic bandgaps are crucial for controlling light propagation.

Purpose of the Study:

To design 2D and 3D amorphous materials with tunable photonic bandgaps.
To investigate the relationship between mechanical properties and photonic bandgaps.
To explore the persistence of photonic bandgaps in a fluid phase.

Main Methods:

Designing amorphous materials inspired by cellular adhesion and shape regulation.
Utilizing a physical parameter to tune bandgap size and mechanical properties.
Investigating solid-fluid phase transitions and shear modulus.
Characterizing photonic bandgap stability under flow and rearrangement.

Main Results:

A complete photonic bandgap was achieved in 2D and 3D amorphous materials.
A tunable physical parameter continuously adjusted bandgap size and mechanical properties.
Materials exhibited a solid-fluid phase transition with vanishing shear modulus.
The photonic bandgap persisted in the fluid phase, creating a robust photonic fluid.

Conclusions:

The developed materials offer a novel approach to engineering self-assembled, nonrigid photonic structures.
Real-time control of photonic bandgaps is achievable through mechanical and thermal tuning.
The concept of a robust photonic fluid opens new avenues for optical material design.