期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 137, 期 11, 页码 3763-3766出版社
AMER CHEMICAL SOC
DOI: 10.1021/jacs.5b00665
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Genetically engineered bacteria and reactive DNA networks detect edges of objects, as done in our retinas and as also found within computer vision. We now demonstrate that simple molecular logic systems (a combination of a pH sensor, a photo acid generator, and a pH buffer spread on paper) without any organization can achieve this relatively complex computational goal with good fidelity. This causes a jump in the complexity achievable by molecular logic-based computation and extends its applicability. The molecular species involved in light dose-driven off-on-off fluorescence is diverted in the on state by proton diffusion from irradiated to unirradiated regions where it escapes a strong quencher, thus visualizing the edge of a mask.
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