Table 4 The S and resonance wavelengths of the proposed biosensor for both mode one and mode two for four viruses sample.

From: Highly sensitive label-free biosensor: graphene/CaF2 multilayer for gas, cancer, virus, and diabetes detection with enhanced quality factor and figure of merit

Virus of interest

Refractive index

Sensitivity (nm/RIU)

Resonance wavelength (µm)

ReferenceS

M1

M2

λR(M1)

λR(M2)

M13 bacteriophage

1.57

4740

8000

8.732

11.2032

64,65

HIV-1

1.5

8010

12,000

8.444

10.7307

66,67

Herpes simplex virus type 1

1.41

8100

38,000

10.1502

11.7878

68,69

Influenza A virus

1.48

9010

12,000

8.36837

10.5986

69,70,71

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