Researchers at the University of Glasgow are exploring the potential of pulsating chemical computers, using the Belousov-Zhabotinsky (BZ) reaction, to tackle optimization problems. By encoding data in color oscillations within interconnected wells, they aim to challenge quantum computers in tasks like message decryption.
Utilizing 3D printed arrays of interconnected wells, the team enhances controllability by introducing gaps that facilitate synchronized BZ reactions. Each well undergoes color changes driven by chemical interactions, with magnetic stirrers centrally placed to control the process. Unlike traditional digital computers, BZ computers operate on finite state logic, demonstrating emergent behavior as chemical information flows between cells.
The researchers employ artificial intelligence to classify states and control inputs, with the goal of solving mathematical problems, such as quadratic unconstrained binary optimization. While some experts question the practicality and efficiency compared to silicon chips or quantum computers, others commend the innovative engineering involved.
In future, the team aims to develop a compiler for general-purpose computing utilizing the BZ reaction. Despite potential speed limitations, they anticipate significant energy efficiency gains, particularly in optimization tasks. This research represents a unique intersection of chemistry, AI, and engineering, offering new avenues for unconventional computing paradigms.
You can read the full paper titled “A programmable hybrid digital chemical information processor based on the Belousov-Zhabotinsky reaction” at this link.
Source: chemistryworld.com
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