Table 2 The S, FOM, and Q for the diabetes sample with different concentration.

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

Refractive index (RI) of urine

Sensitivity

FWHM

FOM

Q factor

Mode 1

Mode 2

Mode 1

Mode 2

Mode 1

Mode 2

Mode 1

Mode 2

1.335

3000

8000

87

100

34.48

80

111.42

111.7

1.336

3000

8500

101

122

29.70

69.67

96

91.64

1.337

4000

8000

116

111

34.48

72.07

83.63

100.85

1.338

6000

7000

124

110

48.38

63.63

78.28

101.81

1.341

4600

8000

116

120

39.65

66.66

83.80

93.54

1.347

5166

7300

105

107

49.2

68.22

92.87

105.37