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Merck

High-contrast grating resonators for label-free detection of disease biomarkers.

Scientific reports (2016-06-07)
Tianbo Sun, Shu Kan, Gerard Marriott, Connie Chang-Hasnain
要旨

A label-free optical biosensor is described that employs a silicon-based high-contrast grating (HCG) resonator with a spectral linewidth of ~500 pm that is sensitive to ligand-induced changes in surface properties. The device is used to generate thermodynamic and kinetic data on surface-attached antibodies with their respective antigens. The device can detect serum cardiac troponin I, a biomarker of cardiac disease to 100 pg/ml within 4 mins, which is faster, and as sensitive as current enzyme-linked immuno-assays for cTnI.

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製品内容

Sigma-Aldrich
IgG ウサギ血清由来, reagent grade, ≥95% (SDS-PAGE), essentially salt-free, lyophilized powder
Sigma-Aldrich
抗ウサギIgG (全分子) ヤギ宿主抗体, affinity isolated antibody, lyophilized powder