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On-chip trace detection of Cd
PubMed · 2026-04-23
Researchers built a custom microchip that detects cadmium — a toxic heavy metal — at trace concentrations with exceptional sensitivity (273.9 fA noise floor), overcoming the noise and scalability problems that limit conventional electrochemical detection systems.
1
The system achieves an ultra-low noise level of 273.9 fA (femtoamperes), enabling trace-level cadmium detection
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A multi-channel design allows simultaneous detection across multiple samples, improving throughput and scalability
3
Vertically integrated on-chip electrodes reduce parasitic capacitance that degraded performance in conventional workstations