Antibody-Functionalized Gold Nanoparticles Binding Assay Diagram #1820813 (License: Personal Use)

This diagram illustrates a biosensing mechanism where gold nanoparticles, functionalized with Y-shaped antibodies, specifically recognize and bind to Qx receptor molecules anchored on a planar substrate (e.g., silicon or glass chip). The labeled regions A-G denote structural layers or functional zones-such as electrode contacts, insulating layers, or fluidic channels-critical for signal transduction in lab-on-chip devices. The directional arrows indicate nanoparticle movement and binding events during assay operation.

Used in scientific articles, educational materials, or product documentation for biosensors, point-of-care diagnostics, or nanomedicine platforms; targets researchers, engineers, and students seeking to understand immunoassay principles at the nanoscale.