• Atom-sized gates could transform DNA sequencing and neuromorphic computing Scientists have built atom-scale â gatesâ that mimic living ion channelsâ opening the door to next-generation sensing and brain-inspired tech. • Ion channels are tiny openings that control the movement of charged particles in living organisms. • These narrow pathways are essential for many biological functions. • In some cases, their tightest sections measure only a few angstroms across, roughly the width of individual atoms. • Reproducing structures this small with precision and consistency remains one of the toughest challenges in nanotechnology. • Researchers at The University of Osaka have now taken a major step toward that goal.
Article Summaries:
- Scientists at the University of Osaka have engineered atom‑scale gates that mimic biological ion channels, creating pores only a few atoms wide. Using a miniature electrochemical reactor, they fabricated a silicon nitride nanopore that can be repeatedly opened and closed by applying voltage, forming and dissolving solid precipitates inside the pore. The process yields sub‑nanometer openings that produce ion‑current spikes similar to those seen in natural channels. By adjusting reactant chemistry and pH, the team can tune pore size and selectivity, opening possibilities for single‑molecule sensing, DNA sequencing, and neuromorphic computing.
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