Proteinoids Meet Olivine: Tiny Computers in a Mineral World

"The study explores how protein‑like molecules, called proteinoids, behave when they settle on a common space rock mineral known as olivine. Researchers chose this mineral because it is found everywhere in the solar system, from meteorites to planetary surfaces, making it a natural backdrop for early life chemistry. \n\nIn the lab, scientists mixed three amino acids—glutamic acid, phenylalanine, and aspartic acid—in a weakly acidic solution that simulates the hot, mineral‑rich vents of early Earth. When these mixtures were poured onto olivine slides, the proteinoids spontaneously arranged themselves into small balls ranging from two to fifteen micrometers in size. Alongside these spheres, intricate branching patterns and tree‑like networks formed, sometimes looking like tiny neurons or budding cells. \n\nTo understand how these structures might process information, the team used several electrical tests. Scanning electron microscopy revealed the shapes, while techniques such as electrochemical impedance spectroscopy and cyclic voltammetry measured how the assemblies responded to electrical signals. The results showed that, when a certain voltage threshold was crossed, the proteinoid‑olivine hybrids could perform basic logical operations—AND, OR, XOR, and NOT—much like the gates in a computer chip.

\n\nFurther electrical recordings uncovered spontaneous voltage spikes that were irregular and clustered, indicating complex, adaptive behavior rather than simple random noise. Interestingly, the presence of olivine helped keep these electrical patterns stable over time, suggesting that minerals can support reliable computation while still allowing biological‑like growth. \n\nThe research highlights a fascinating partnership between living‑mimicking molecules and inorganic surfaces. By combining self‑assembly, reproduction‑like branching, and computational ability, these hybrid systems offer a new route to building bioinspired devices that work on principles different from silicon electronics. \n\nThe findings also shed light on how life‑related chemistry might have unfolded on early Earth and other rocky bodies, pointing to mineral surfaces as potential cradles for the first information‑processing systems. \n\n

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