An LSPR Sensor Integrated with VCSEL and Microfluidic Chip

Fang Cao; Xupeng Zhao; Xiaoqing Lv; Liangchen Hu; Wenhui Jiang; Feng Yang; Li Chi; Pengying Chang; Chen Xu; Yiyang Xie

doi:10.3390/nano12152607

Nanomaterials (Jul 2022)

An LSPR Sensor Integrated with VCSEL and Microfluidic Chip

Fang Cao,
Xupeng Zhao,
Xiaoqing Lv,
Liangchen Hu,
Wenhui Jiang,
Feng Yang,
Li Chi,
Pengying Chang,
Chen Xu,
Yiyang Xie

Affiliations

Fang Cao: Key Laboratory of Optoelectronics Technology, Ministry of Education, Beijing University of Technology, Beijing 100124, China
Xupeng Zhao: Key Laboratory of Optoelectronics Technology, Ministry of Education, Beijing University of Technology, Beijing 100124, China
Xiaoqing Lv: State Key Laboratory of Integrated Optoelectronics, Institute of Semiconductor, Chinese Academy of Sciences, Beijing 100083, China
Liangchen Hu: Key Laboratory of Optoelectronics Technology, Ministry of Education, Beijing University of Technology, Beijing 100124, China
Wenhui Jiang: Key Laboratory of Optoelectronics Technology, Ministry of Education, Beijing University of Technology, Beijing 100124, China
Feng Yang: Key Laboratory of Optoelectronics Technology, Ministry of Education, Beijing University of Technology, Beijing 100124, China
Li Chi: School of Traditional Chinese Medicine, Capital Medical University, Beijing 100069, China
Pengying Chang: Key Laboratory of Optoelectronics Technology, Ministry of Education, Beijing University of Technology, Beijing 100124, China
Chen Xu: Key Laboratory of Optoelectronics Technology, Ministry of Education, Beijing University of Technology, Beijing 100124, China
Yiyang Xie: Key Laboratory of Optoelectronics Technology, Ministry of Education, Beijing University of Technology, Beijing 100124, China

DOI: https://doi.org/10.3390/nano12152607
Journal volume & issue: Vol. 12, no. 15
p. 2607

Abstract

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The work introduces a localized surface plasmon resonance (LSPR) sensor chip integrated with vertical-cavity surface-emitting lasers (VCSELs). Using VCSEL as the light source, the hexagonal gold nanoparticle array was integrated with anodic aluminum oxide (AAO) as the mask on the light-emitting end face. The sensitivity sensing test of the refractive index solution was realized, combined with microfluidic technology. At the same time, the finite-difference time- domain (FDTD) algorithm was applied to model and simulate the gold nanostructures. The experimental results showed that the output power of the sensor was related to the refractive index of the sucrose solution. The maximum sensitivity of the sensor was 1.65 × 106 nW/RIU, which gives it great application potential in the field of biomolecular detection.

Published in Nanomaterials

ISSN: 2079-4991 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Science: Chemistry
Website: https://www.mdpi.com/journal/nanomaterials

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