AU HRI sensor chips
XanTec’s AU HRI sensor chips consist of an approximately 44 nm gold layer deposited on a high-refractive-index (HRI) glass substrate (SF10, n = 1.72827 @ 588 nm). These chips are intended for custom surface development or use as a reference surface.
Direct adsorption-based ligand immobilization is generally not recommended, as it frequently results in partial ligand denaturation and elevated nonspecific background signals, limiting suitability for standard SPR interaction analyses.
Key features:
- Base sensor chip: Provides a clean, well-defined gold surface suitable for development and evaluation of custom surface chemistries.
- Surface conductive for Electro-SPR (E-SPR): Enables electrochemical SPR applications.
- Reference chip: Serves as a control surface for assessing nonspecific interactions or benchmarking newly developed coatings.
Schematic illustration of a bare AU HRI sensor chip. The decaying red gradient represents the evanescent field.1
| Product code | AU HRI |
|---|---|
| Base coating | Bare gold, ≈ 44 nm, on SF10 glass support (n = 1.72827 @ 588 nm) |
| Intended purpose |
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1 All illustrations are schematic representations and are not drawn to scale; dimensions, densities, and spatial relationships do not reflect actual physical or chemical proportions.