Improvement of fiber optic based localized surface plasmon resonance sensor by optical fiber surface etching and Au capping

被引：0
作者：
Se-Woong Bae
Hyeong-Min Kim
Jae-Hyoung Park
Seung-Ki Lee
机构：
[1] Dankook University,Department of Electronics and Electrical Engineering
来源：
Micro and Nano Systems Letters | / 7卷
关键词：
Au nanoparticle; Localized surface plasmon resonance; Surface etching; Au capping; Signal-to-noise ratio;
D O I：
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摘要：
Fiber optic based localized surface plasmon resonance (FO-LSPR) sensor is one of the biosensors that detects specific biomolecules and can detect the onset of disease. In this paper, we propose two methods to improve the signal to noise ratio (SNR) of the sensor, which is one of the main characteristics of the FO-LSPR sensor. The first method is to increase the intensity of the sensor by increasing the size of gold nanoparticle (Au NP) formed on the optical fiber surface by Au capping method. The second method is to form a structure that reduces the reflection by increasing the roughness of the surface by etching the surface of the optical fiber using the Au NP formed on the surface of the optical fiber as a mask. Increasing the roughness of the optical fiber surface can reduce the background signal of the sensor. The two methods mentioned above can increase the SNR of the sensor. When the SNR of the sensor is increased, the efficiency of the sensor is improved.
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[1]  
Malhotra BD(2005)Recent trends in biosensors Curr Appl Phys 5 92-97
[2]  
Singhal R(2000)Biosensors and biochips: advances in biological and medical diagnostics Fresenius’J Analyt Chem 336 540-551
[3]  
Chaubey A(1999)Application of dual-step potential on single screen-printed modified xarbon paste electrodes for detection of amino acids and proteins Fresenius’J Analyt Chem 364 154-159
[4]  
Sharma SK(2001)Electrochemical biosensors: recommended definitions and classification Bioses Bioelectron 16 121-131
[5]  
Kumar A(1978)Ellipsometry as a tool to study the adsorption behavior of synthetic and biopolymers at the air–water interface Biopolymers 17 1759-1772
[6]  
Vo-Dinh T(2014)Dip biosensor based on localized surface plasmon resonance at the tip of an optical fiber Langmuir 30 946-954
[7]  
Cullum B(2011)Localized surface plasmon resonance sensors Chem Rev 111 3828-3857
[8]  
Sarkar P(2013)Spherical nucleic acid enhanced FO-SPR DNA melting for detection of mutations in legionella pneumophila Anal Chem 85 1734-1742
[9]  
Turner APF(2011)Fabrication of fiber-optic localized surface plasmon resonance sensor and its application to detect antibody-antigen reaction of interferon-gamma Opt Eng. 50 124405-2199
[10]  
Thevenot DR(2013)SPR-based optical fiber sensors using gold-silver alloy particles as the active sensing material IEEE Sens J 13 2192-76
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