In less than a minute, a miniature device can measure a patient's blood for methotrexate, a commonly used but potentially toxic cancer drug. Just as accurate and ten times less expensive than equipment currently used in hospitals, this nanoscale device has an optical system that can rapidly gauge the optimal dose of methotrexate a patient needs, while minimizing the drug's adverse effects.
The gold nanonparticules on the surface of this receiving tab modify the colour of light detected by the instrument. The captured colour perfectly reflects the exact concentration of the medication in the blood sample. Les nanoparticules d'or situées à la surface de la languette réceptrice modifient la couleur de la lumière détectée par l'instrument. La couleur captée reflète la concentration exacte du médicament contenu dans l'échantillon sanguin.
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