Related Experiment Video
Updated: Jun 1, 2026
10:12
Graphene Enclosure of Chemically Fixed Mammalian Cells for Liquid-Phase Electron Microscopy
Published on: September 21, 2020
Graphene as cellular interface: electromechanical coupling with cells.
Ravindra Kempaiah1, Alfred Chung, Vivek Maheshwari
1The Nanotechnology Engineering Program, Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, Canada.
ACS Nano
|June 17, 2011
Summary
Researchers demonstrate interfacing graphene sheets with yeast cells for electrical monitoring. This allows real-time detection of cell volume changes due to alcohol exposure, enabling sensor development.
Area of Science:
- Biophysics
- Materials Science
- Nanotechnology
Background:
- Integrating cellular physiology with electrical readouts is crucial for advanced biosensing.
- Nanomaterials like graphene offer unique electrical properties for interfacing with biological systems.
Purpose of the Study:
- To investigate the electromechanical coupling between graphene sheets and yeast cells.
- To develop a cell-based sensor capable of detecting physiological changes.
Main Methods:
- Coating viable yeast cells with graphene sheets.
- Monitoring electrical conductivity changes in graphene upon cellular stimulation.
- Exposing cells to different alcohol solutions (ethanol, 2-propanol) and water.
Main Results:
- Successful interfacing of graphene with yeast cells, maintaining cell viability.
- Observed changes in graphene's electrical conductivity correlated with cell volume changes.
- Demonstrated ability to differentiate between ethanol, 2-propanol, and water based on the electrical response.
Conclusions:
- Electromechanical coupling between graphene and yeast cells enables label-free monitoring of cellular responses.
- This approach holds promise for developing novel cell-based electrical sensors for detecting chemical stimuli.
More Related Videos
Related Concept Videos
01:24Overview of Cell-Matrix Interactions
The extracellular matrix or ECM holds cells together to form a tissue and allows the cells within the tissue to communicate. ECM comprises proteins such as fibronectin, collagen, laminin, etc. The most abundant protein in this space is collagen. Collagen fibers are interwoven with carbohydrate-containing protein molecules called proteoglycans. ECM allows cell migration and provides a structural scaffold at cell adhesion that anchors the cell when the extracellular matrix proteins interact with...
01:13Cell-matrix's Response to Mechanical Forces
In animal cells, the extracellular matrix allows cells within tissues to withstand external stresses and transmits signals from the outside of the cell to the inside. The extracellular matrix is extensive, and its composition varies between different types of tissues. For example, the reticular fibers and ground substance make up the ECM in loose connective tissue, while collagen and bone minerals make up the ECM of bone tissue.
Anchoring junctions mechanically attach a cell to the...
Anchoring junctions mechanically attach a cell to the...