Figure 4 | Scientific Reports

Figure 4

From: High specificity THz metamaterial-based biosensor for label-free transcription factor detection in melanoma diagnostics

Figure 4

Resonance frequency shifts for different measurement spot groups in the blind sample measurement series using the blind sample treatment. Reference spots were treated either with water (Group I) or PBS (Group II) resulting in a complete shielding of the gold surface. Blind sample measurement spots contain capture DNA which refers to either a ssDNA film (Group III) or a dsDNA film (Group IV). Since EGR2 had been saturated with dsDNA \(ex-situ\), no selective immobilization occurred.

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