Penn State researchers developed a new memory device that combines synthetic DNA with crystalline perovskite. This bio-hybrid system acts as a memristor, which preserves a record of electrical activity even after the power source is removed. Unlike standard resistors found in traditional electronics, this design mimics the way neurons function in the brain to allow for more sophisticated data processing.
The research team engineered short, synthetic DNA sequences and doped them with silver nanoparticles. This process makes the DNA conductive and allows for precise arrangement at extremely small scales. When paired with thin films of perovskite, these DNA structures create efficient pathways for electrical current. This structure enables the device to operate with significantly lower energy requirements.
Testing shows the device functions with less than 0.1 volt. It maintains stability at temperatures up to 250 degrees Fahrenheit and remains functional for weeks at room temperature. The study reports that this system performs memory tasks using one-tenth the power of comparable existing technologies while providing higher storage density.
As demand for artificial intelligence grows, the need for high-storage, low-power hardware increases. This technology provides a new strategy for neuromorphic computing, which allows systems to evaluate multiple inputs simultaneously. By utilizing the dense storage capacity of DNA alongside semiconductor materials, the team has created a platform that could change how future electronic systems store and process complex information.