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Related Experiment Video

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Epitaxial Nanostructured α-Quartz Films on Silicon: From the Material to New Devices

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Published on: October 6, 2020

Bioelectronics communication: encoding yeast regulatory responses using nanostructured gallium nitride thin films.

Patrick J Snyder¹, Dennis R LaJeunesse, Pramod Reddy

¹Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695, USA. ivanisevic@ncsu.edu.

|June 12, 2018

Summary

Gallium nitride (GaN) nanostructured thin films can communicate with baker's yeast (Saccharomyces cerevisiae). These films use surface properties to alter yeast physiology, enabling bioelectronic communication.

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Area of Science:

Bioelectronics
Materials Science
Synthetic Biology

Background:

Baker's yeast (Saccharomyces cerevisiae) is a crucial model organism in synthetic biology.
Gallium nitride (GaN) nanostructured thin films offer unique electronic and morphological properties.

Purpose of the Study:

To investigate the encoding of physiological responses in S. cerevisiae using GaN nanostructured thin films.
To explore the potential for bioelectronic communication between GaN semiconductors and yeast cells.

Main Methods:

Characterization of GaN thin films using Photocurrent Measurements, Atomic Force Microscopy, and Kelvin Probe Force Microscopy.
Induction of persistent photoconductivity in GaN films using UV light.
Analysis of yeast cell wall integrity, chitin production, and membrane voltage.

Main Results:

GaN thin films induced persistent photoconductivity, leading to surface charge accumulation.
Nanoscale topography and surface charge activated the yeast cell wall integrity pathway, altering chitin production.
GaN films modulated yeast membrane voltage, indicating cell polarization and enabling bioelectronic communication.

Conclusions:

Semiconductor interfacial properties, including nanoscale topography and surface charge, can encode physiological responses in yeast.
This work establishes a strategy for bioelectronic communication using wide band gap semiconductor thin films.
GaN nanostructured films provide a novel platform for interfacing with biological systems at the cellular level.