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Aqueous Droplets Used as Enzymatic Microreactors and Their Electromagnetic Actuation

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Responsive Photonic Liquid Marbles.

Manos Anyfantakis¹, Venkata S R Jampani¹, Rijeesh Kizhakidathazhath¹

¹Department of Physics and Materials Science, University of Luxembourg, 162a Avenue de la Faïencerie, 1511, Luxembourg, Luxembourg.

Angewandte Chemie (International Ed. in English)

|July 21, 2020

Summary

This summary is machine-generated.

Liquid marbles enable control over bio-derived polymer self-assembly for tunable structural colors. These responsive soft photonic objects change color with temperature, chemicals, and deformation.

Keywords:

cholesteric liquid crystals hydroxypropyl cellulose liquid marble stimuli responsiveness structural color

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Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals

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Published on: May 29, 2018

Area of Science:

Materials Science
Polymer Science
Soft Matter Physics

Background:

Liquid marbles offer potential as microreactors, but their use in advanced material fabrication is underexplored.
Self-assembly of bio-derived polymers into liquid crystalline phases is key for novel photonic materials.

Purpose of the Study:

To demonstrate liquid marbles as platforms for controlling the self-assembly of hydroxypropyl cellulose.
To achieve tunable structural coloration in liquid marbles across the visible spectrum.
To explore the responsive properties of these bio-derived liquid crystal structures.

Main Methods:

Utilizing liquid marbles to encapsulate and control the self-assembly of hydroxypropyl cellulose.
Employing quantitative water extraction to precisely tune the cholesteric pitch.
Investigating color changes in response to external stimuli like temperature, chemicals, and mechanical stress.

Main Results:

Successfully fabricated liquid marbles exhibiting cholesteric liquid crystalline phases with structural coloration via Bragg reflection.
Achieved tunable structural colors across the visible spectrum by adjusting the cholesteric pitch.
Demonstrated that liquid marbles visibly change color in response to temperature, toxic chemicals, and mechanical deformation.

Conclusions:

Liquid marbles are effective miniature platforms for controlling bio-derived polymer liquid crystal self-assembly.
This approach enables the fabrication of sustainable, responsive soft photonic objects with tunable structural colors.
Highlights the potential of liquid marbles for developing advanced responsive materials and sensors.