Figure of Merit Enhancement of a Surface Plasmon Resonance Sensor Using a Low-Refractive-Index Porous Silica Film

doi:10.3390/s17081846

. 2017 Aug 10;17(8):1846.

doi: 10.3390/s17081846.

Figure of Merit Enhancement of a Surface Plasmon Resonance Sensor Using a Low-Refractive-Index Porous Silica Film

Qing-Qing Meng¹, Xin Zhao², Cheng-You Lin³, Shu-Jing Chen⁴, Ying-Chun Ding⁵, Zhao-Yang Chen⁶

Affiliations

¹ College of Science, Beijing University of Chemical Technology, Beijing 100029, China. 2015200897@mail.buct.edu.cn.
² College of Science, Beijing University of Chemical Technology, Beijing 100029, China. 2014200876@mail.buct.edu.cn.
³ College of Science, Beijing University of Chemical Technology, Beijing 100029, China. cylin@mail.buct.edu.cn.
⁴ School of Materials Science and Technology, China University of Geosciences (Beijing), Beijing 100083, China. chenshujing@cugb.edu.cn.
⁵ College of Science, Beijing University of Chemical Technology, Beijing 100029, China. dingyc@mail.buct.edu.cn.
⁶ College of Science, Beijing University of Chemical Technology, Beijing 100029, China. chenzy@mail.buct.edu.cn.

PMID: 28796155
PMCID: PMC5580096
DOI: 10.3390/s17081846

Figure of Merit Enhancement of a Surface Plasmon Resonance Sensor Using a Low-Refractive-Index Porous Silica Film

Qing-Qing Meng et al. Sensors (Basel). 2017.

. 2017 Aug 10;17(8):1846.

doi: 10.3390/s17081846.

Authors

Qing-Qing Meng¹, Xin Zhao², Cheng-You Lin³, Shu-Jing Chen⁴, Ying-Chun Ding⁵, Zhao-Yang Chen⁶

Affiliations

¹ College of Science, Beijing University of Chemical Technology, Beijing 100029, China. 2015200897@mail.buct.edu.cn.
² College of Science, Beijing University of Chemical Technology, Beijing 100029, China. 2014200876@mail.buct.edu.cn.
³ College of Science, Beijing University of Chemical Technology, Beijing 100029, China. cylin@mail.buct.edu.cn.
⁴ School of Materials Science and Technology, China University of Geosciences (Beijing), Beijing 100083, China. chenshujing@cugb.edu.cn.
⁵ College of Science, Beijing University of Chemical Technology, Beijing 100029, China. dingyc@mail.buct.edu.cn.
⁶ College of Science, Beijing University of Chemical Technology, Beijing 100029, China. chenzy@mail.buct.edu.cn.

PMID: 28796155
PMCID: PMC5580096
DOI: 10.3390/s17081846

Abstract

In this paper; the surface plasmon resonance (SPR) sensor with a porous silica film was studied. The effect of the thickness and porosity of the porous silica film on the performance of the sensor was analyzed. The results indicated that the figure of merit (FOM) of an SPR sensor can be enhanced by using a porous silica film with a low-refractive-index. Particularly; the FOM of an SPR sensor with 40 nm thick 90% porosity porous silica film; whose refractive index is 1.04 was improved by 311% when compared with that of a traditional SPR sensor. Furthermore; it was found that the decrease in the refractive index or the increase in the thickness of the low-refractive-index porous silica film can enlarge the FOM enhancement. It is believed that the proposed SPR sensor with a low-refractive-index porous silica film will be helpful for high-performance SPR sensors development.

Keywords: figure of merit; low-refractive-index; porous silica; surface plasmon resonance sensor.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

**Figure 1**
Schematic of the surface plasmon resonance (SPR) sensor with a porous silica film.

**Figure 2**
Three-layer model of the proposed SPR sensor.

**Figure 3**
Refractive index as a function of the porosity of the porous silica film.

**Figure 4**
The angular spectra of the SPR sensors with 0 (traditional SPR sensor), 20, and 40 nm thick 20% porosity porous silica film (n_ps = 1.365).

**Figure 5**
The angular spectra of the SPR sensors with 0 (traditional SPR sensor), 20, and 40 nm thick 40% porosity porous silica film (n_ps = 1.270).

**Figure 6**
The angular spectra of the SPR sensors with 0 (traditional SPR sensor), 20, and 40 nm thick 60% porosity porous silica film (n_ps = 1.176).

**Figure 7**
(Color online) The angular spectra of the SPR sensors with 0 (traditional SPR sensor), 20, and 40 nm thick 80% porosity porous silica film (n_ps = 1.086).

**Figure 8**
(Color online) Electric field intensity enhancement factor inside the SPR sensors in Figure 7.

**Figure 9**
FOM versus the refractive index of porous silica film with various thicknesses.

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References

1. Nylander C., Liedberg B., Lind T. Gas detection by means of surface plasmon resonance. Sens. Actuators. 1982;3:79–88. doi: 10.1016/0250-6874(82)80008-5. - DOI
1. Homola J., Yee S.S., Gauglitz G. Surface plasmon resonance sensors: Review. Sens. Actuators B Chem. 1999;54:3–15. doi: 10.1016/S0925-4005(98)00321-9. - DOI
1. Tiwari K., Sharma S.C., Hozhabri N. Hafnium dioxide as a dielectric for highly-sensitive waveguide-coupled surface plasmon resonance sensors. AIP Adv. 2016;6:045217. doi: 10.1063/1.4948454. - DOI
1. Pang L., Hwang G.M., Slutsky B., Fainman Y. Spectral sensitivity of two-dimensional nanohole array surface plasmon polariton resonance sensor. Appl. Phys. Lett. 2007;91:123112. doi: 10.1063/1.2789181. - DOI
1. Maharana P.K., Jha R., Padhy P. On the electric field enhancement and performance of SPR gas sensor based on graphene for visible and near infrared. Sens. Actuators B Chem. 2015;207:117–122. doi: 10.1016/j.snb.2014.10.006. - DOI

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[1] Nylander C., Liedberg B., Lind T. Gas detection by means of surface plasmon resonance. Sens. Actuators. 1982;3:79–88. doi: 10.1016/0250-6874(82)80008-5. - DOI

[2] Nylander C., Liedberg B., Lind T. Gas detection by means of surface plasmon resonance. Sens. Actuators. 1982;3:79–88. doi: 10.1016/0250-6874(82)80008-5. - DOI

[3] Homola J., Yee S.S., Gauglitz G. Surface plasmon resonance sensors: Review. Sens. Actuators B Chem. 1999;54:3–15. doi: 10.1016/S0925-4005(98)00321-9. - DOI

[4] Homola J., Yee S.S., Gauglitz G. Surface plasmon resonance sensors: Review. Sens. Actuators B Chem. 1999;54:3–15. doi: 10.1016/S0925-4005(98)00321-9. - DOI

[5] Tiwari K., Sharma S.C., Hozhabri N. Hafnium dioxide as a dielectric for highly-sensitive waveguide-coupled surface plasmon resonance sensors. AIP Adv. 2016;6:045217. doi: 10.1063/1.4948454. - DOI

[6] Tiwari K., Sharma S.C., Hozhabri N. Hafnium dioxide as a dielectric for highly-sensitive waveguide-coupled surface plasmon resonance sensors. AIP Adv. 2016;6:045217. doi: 10.1063/1.4948454. - DOI

[7] Pang L., Hwang G.M., Slutsky B., Fainman Y. Spectral sensitivity of two-dimensional nanohole array surface plasmon polariton resonance sensor. Appl. Phys. Lett. 2007;91:123112. doi: 10.1063/1.2789181. - DOI

[8] Pang L., Hwang G.M., Slutsky B., Fainman Y. Spectral sensitivity of two-dimensional nanohole array surface plasmon polariton resonance sensor. Appl. Phys. Lett. 2007;91:123112. doi: 10.1063/1.2789181. - DOI

[9] Maharana P.K., Jha R., Padhy P. On the electric field enhancement and performance of SPR gas sensor based on graphene for visible and near infrared. Sens. Actuators B Chem. 2015;207:117–122. doi: 10.1016/j.snb.2014.10.006. - DOI

[10] Maharana P.K., Jha R., Padhy P. On the electric field enhancement and performance of SPR gas sensor based on graphene for visible and near infrared. Sens. Actuators B Chem. 2015;207:117–122. doi: 10.1016/j.snb.2014.10.006. - DOI

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Figure of Merit Enhancement of a Surface Plasmon Resonance Sensor Using a Low-Refractive-Index Porous Silica Film

Affiliations

Figure of Merit Enhancement of a Surface Plasmon Resonance Sensor Using a Low-Refractive-Index Porous Silica Film

Authors

Affiliations

Abstract

Conflict of interest statement

Figures

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