A single current-carrying path pulls magnetic particles closer to a magnetochemical sensor, improving detection of weak signals from small particles.
A shielded flow channel and stray light prevention structure enable real-time fine particle measurement with higher scattering precision.
A suction electrode pulls charged particles into the detection region, simplifying electrode fabrication while improving sensitivity and robustness.
A dark reticle separates overlapping scattered light from multiple particles, preserving individual pattern data without complex lens optics.
Low-cost aerosol and sensor-based testing measures respirator filtration efficiency at 30 lpm while reducing system complexity.