DNA Meets Electronics: Ultra-Low Power Memory Breakthrough
DNA stores life’s instructions. But it also holds massive amounts of data. In fact, one gram of DNA can store about 215 million gigabytes. That is incredibly dense.The challenge has been making DNA work inside electronic systems. Now, researchers at Penn State have found a way.
How the Bio-Hybrid Device Works
The team built a memristor. This is a memory resistor that uses very little energy. Unlike traditional resistors, it remembers data even after power is turned off. Therefore, it works like a human brain.To create the device, they used two main parts. First, synthetic DNA with short, engineered sequences. Second, a semiconductor called perovskite. Perovskite is common in solar cells.However, neither worked well alone. So the team combined them. They added silver nanoparticles to the DNA. Then they mixed it with thin layers of perovskite. As a result, the DNA conducted electricity better.
Better Performance, Less Power
The new device uses 100 times less power than flash drives. It also stores more data. For example, it runs on less than 0.1 volts. That is a tiny fraction of a standard outlet.The device stayed stable at high temperatures. It also worked for over six weeks at room temperature. This performance beats current perovskite memory.“Nature has the solution,” said researcher Bed Poudel. “We just have to find it and apply it.”The study appears in Advanced Functional Materials. A patent is pending.
