A memristor (memory resistor) is a device that “remembers” past electrical states, making it essential for neuromorphic (brain-like) computing. Bio-memristors achieve this function using natural materials such as egg albumen, silk fibroin, DNA, and chitosan.
Proteins as Electronics
Proteins carry rich ionic structures that enable resistive switching—key for memory and learning circuits. For example:
- Egg albumen can trap ions and toggle resistance under voltage pulses.
- Silk fibroin forms stable, flexible biofilms ideal for implantable memory.
- DNA provides self-assembling molecular networks for nanoscale devices.
- Chitosan, derived from shrimp shells, enables biodegradable memory films.
Neuromorphic Biochips
These protein-based systems mimic the synaptic plasticity of neurons—how the brain strengthens or weakens connections over time. With low power requirements and biodegradability, bio-memristors could become the building blocks of sustainable neuromorphic hardware.
The Bigger Picture
Bio-memristors bridge biology and electronics. They represent a step toward computing that can learn, adapt, and even integrate within living tissue—a literal merging of silicon and cells.