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Published on: November 16, 2012
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Engineered bacteria that self-assemble "bioglass" polysilicate coatings display enhanced light focusing
Lynn M Sidor1, Michelle M Beaulieu2, Ilia Rasskazov3,4
1Department of Biology, University of Rochester; Rochester, New York, USA.
Biorxiv : the Preprint Server for Biology
|June 19, 2024
Summary
Scientists engineered bacteria to create living microlenses. These environmentally friendly "bioglass" bacteria focus light, offering a sustainable alternative for photonic technologies.
Area of Science:
- Biotechnology
- Materials Science
- Optics
Background:
- Traditional photonic device synthesis involves toxic and complex methods.
- There is a need for sustainable and environmentally friendly approaches in optical materials development.
Purpose of the Study:
- To develop living microlenses using a synthetic biology approach.
- To engineer bacteria capable of self-assembling polysilicate shells for optical applications.
Main Methods:
- Engineered *Escherichia coli* to express silicatein, a silica biomineralization enzyme from sea sponges.
- Utilized bacteria to self-assemble polysilicate "bioglass" shells around themselves.
- Assessed the optical properties and metabolic activity of the engineered bacterial particles.
Main Results:
- Polysilicate-encapsulated bacteria successfully formed self-assembled shells.
- These bacterial microlenses focused light into nanojets significantly brighter than unmodified bacteria.
- Engineered bacteria remained metabolically active for up to four months.
Conclusions:
- Engineered bacterial particles offer a sustainable and tunable platform for photonic devices.
- This synthetic biology approach presents a novel method for creating environmentally friendly optical materials.
- Bacterial-based photonic devices have the potential to revolutionize optical and photonic technologies.
