제정호 교수 연구실 (16.06)
Quantitative probing of Cu2+ ions naturally present in single living cells is realized by developing a quantum-dot-embedded nanowire-waveguide probe. The intracellular Cu2+ ion concentration is quantified by direct monitoring of photoluminescence quenching during the insertion of the nanowire in a living neuron. The measured intracellular Cu2+ ion concentration is 3.34 ± 1.04 × 10−6 m (mean ± s.e.m.) in single hippocampal neurons.