Aluminum-Based Deep-Ultraviolet Surface Plasmon Resonance Sensor

Moreira, Cleumar S.; Wang, Yunshan; Blair, Steve; Carvalho, Igor Alessandro Silva; Cruz, Rossana Moreno Santa

doi:10.1007/s11468-020-01207-6

Cited by 9 publications

(3 citation statements)

References 27 publications

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“…The calculated SPR curve is shown in Fig. 3, which is compared with the theoretical result obtained using the Fresnel multilayer model [1]. Although the experimental and theoretical results agree, the linewidth of the experimental curve is broader, the reflectivity dip is smaller than the theoretical one, and there is a red-shift of the resonance wavelength.…”

Section: Experimental Apparatusmentioning

confidence: 76%

Supplementary document for New approaches for an aluminum deep-ultraviolet surface plasmon resonance sensor - 4707694.pdf

da Moreira,

Wang,

Blair

et al. 2020

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Section: Experimental Apparatusmentioning

confidence: 76%

Supplementary document for New approaches for an aluminum deep-ultraviolet surface plasmon resonance sensor - 4707694.pdf

da Moreira,

Wang,

Blair

et al. 2020

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“…The sensitivity is 29 • /RIU and 15 • /RIU higher than that of two different reported UV-SPR sensors. [35] In addition, the angular spectrums, which is the reflectivity curves as a function of incident angle, of the optimized FUV-NGWSPR sensors with diamond, Ta 2 O 5 , GaN and the optimized FUV-SPR sensor without dielectric are also plotted, as shown in Fig. 6.…”

Section: Fuv-ngwspr Sensor With Different Dielectric Materialsmentioning

confidence: 99%

Sensitivity improvement of aluminum-based far-ultraviolet nearly guided-wave surface plasmon resonance sensor

Li¹,

Chen²,

Lin³

2022

Chinese Phys. B

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In this paper, an aluminum (Al) based nearly guided-wave surface plasmon resonance (NGWSPR) sensor is investigated in the far-ultraviolet (FUV) region. By simultaneously optimizing the thickness of Al and dielectric films, the sensitivity of the optimized Al-based FUV-NGWSPR sensor increases from 183 to 309°/RIU, and its figure of merit rises from 26.47 to 32.59/RIU when the refractive index of dielectric increases from 2 to 5. Compared with a traditional FUV-SPR sensor without dielectric, the optimized FUV-NGWSPR sensor can realize simultaneous improvement of sensitivity and figure of merit. In addition, the FUV-NGWSPR sensor with realistic materials (diamond, Ta2O5 and GaN) is also investigated, and 137.84%, 52.70% and 41.89% sensitivity improvement are achieved respectively. This work proposes a method for performance improvement of FUV-SPR sensors by exciting nearly guided-wave, and could be helpful for the high-performance SPR sensor in the short-wavelength region.

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“…Due to the intrinsic property limitations of Au, Ag and Cu, they can't support SPR in the deep-ultraviolet region [25,29], which make them not to be considered as candidate for RI sensing applications in the DUV. However, Aluminum (Al) is a potential candidate for SPR-based RI sensing in the DUV region due to its excellent SPR properties in the UV or even DUV range, natural abundance and inexpensive [30][31][32]. In addition, the Al nanostructure has a self-limiting oxidation property, giving a thin and stable oxide thickness (approximately 3 nm thickness), which is beneficial to the practical use of Al-based nanosensors [33,34].…”

Section: Introductionmentioning

confidence: 99%

Low-cost and simple fabrication of hierarchical Al nanopit arrays for deep ultraviolet refractive index sensing

Wang¹,

Huang²,

Cai³

et al. 2022

Nanotechnology

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Herein, we proposed a simple non-lithographic way to fabricate hierarchical Al nanopit arrays performed as deep ultraviolet (DUV, 200-300 nm) refractive index sensing. Only by adjusting the Al deposition thickness on the Al nanopit array, the hierarchical Al nanopit arrays with tunable plasmonic properties in the DUV region were obtained. The prepared hierarchical Al nanopit arrays are of very good time stability and its RI sensitivity and concentration detection limit of adenine ethanol solution reach 311nm/RIU and "5×" 〖"10" 〗^"-6" " M" , respectively, as the Al deposition thickness is 60 nm. Furthermore, the electric field distribution simulation results show that high RI sensing characteristic are mainly attributed to the local surface plasmon resonance (LSPR). This investigation provides a facile way to develop low cost, high efficient and easily fabricated Al-based RI sensor in the DUV region.

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Aluminum-Based Deep-Ultraviolet Surface Plasmon Resonance Sensor

Cited by 9 publications

References 27 publications

Supplementary document for New approaches for an aluminum deep-ultraviolet surface plasmon resonance sensor - 4707694.pdf

Supplementary document for New approaches for an aluminum deep-ultraviolet surface plasmon resonance sensor - 4707694.pdf

Sensitivity improvement of aluminum-based far-ultraviolet nearly guided-wave surface plasmon resonance sensor

Low-cost and simple fabrication of hierarchical Al nanopit arrays for deep ultraviolet refractive index sensing

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