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Table 3 The λres, S, and FOM corresponding to the resonance modes of the case 3 structure when R is varied from 50 to 300 nm with an increment of 50 nm in the wavelength range of 450–3000 nm, respectively

From: Breaking the Symmetry of a Metal–Insulator–Metal-Based Resonator for Sensing Applications

Mode

 

1

2

3

4

5

6

7

8

9

R = 50 nm

λres (nm)

661

528

487

      
 

S(nm/RIU)

400

400

400

      
 

FOM(1/RIU)

13.3

66.7

50.0

      

R = 100 nm

λres (nm)

1075

865

756

556

447

    
 

S(nm/RIU)

1100

800

700

500

400

    
 

FOM(1/RIU)

55.0

266.7

70.0

50.0

40.0

    

R = 150 nm

λres (nm)

1512

1232

1076

759

642

572

533

  
 

S(nm/RIU)

1500

1300

1100

700

600

600

500

  
 

FOM(1/RIU)

50.0

260.0

110.0

87.5

75.0

150.0

71.4

  

R = 200 nm

λres (nm)

1951

1405

970

820

729

554

520

  
 

S(nm/RIU)

1900

1400

900

800

700

500

500

  
 

FOM(1/RIU)

63.3

56.0

225.0

100.0

62.5

62.5

71.4

  

R = 250 nm

λres (nm)

2387

1735

1182

1001

891

808

666

617

507

 

S(nm/RIU)

2400

1700

1200

1000

1000

700

700

600

400

 

FOM(1/RIU)

48.0

113.3

240.0

83.3

333.3

175.0

233.3

40.0

40.0

R = 300 nm

λres (nm)

2822

2026

1397

1186

782

737

719

588

495

 

S(nm/RIU)

2800

2100

1300

1100

800

700

700

500

500

 

FOM(1/RIU)

30.0

105.0

216.7

110.0

160.0

140.0

140

33.3

25.0

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