Stick-slip-motion-assisted interfacial self-assembly of noble metal nanoparticles on tapered optical fiber surface and its application in SERS detection

Liu, Ye; Liu, Rumeng; Ai, Chuanwei; Wang, Botian; Chu, Rang; Wang, Hongcheng; Shui, Lingling; Zhou, Fei

doi:10.1016/j.apsusc.2022.154298

Cited by 18 publications

(4 citation statements)

References 39 publications

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Section: Other Strategiesmentioning

confidence: 99%

“…[ 67 ] As another demonstration, Zhou's group developed ordered assembling of noble metals based on the stick‐slip motion phenomenon, which gathered into several rings at the tapered end of the optical fiber (Figure 5c). [ 68 ] Notably, the laser‐induced evaporative self‐assembly of NPs in meniscus and the stick‐slip motion of the meniscus during the pulling of the tapered optical fibers were two main factors for the formation of NP rings on the optical fiber cone. Therefore, the pulling speed, as well as inducing laser power, were further optimized and finely tuned to ensure the maximum sensing performance.…”

Section: Current Strategies Of Noble Metal Self‐assemblingmentioning

confidence: 99%

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Emerging Biosensors Based on Noble Metal Self‐Assembly for In Vitro Disease Diagnosis

Qian²,

Huang

2023

Advanced NanoBiomed Research

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The biosensing systems are powerful tools in characterizing the pathological state of patients, promising in vitro disease diagnosis at an early stage. Noble metals are introduced into emerging biosensors benefiting from their outstanding properties, such as surface plasmon resonance and photothermal conversion. The ordered arrangements of noble metals into superstructures through self‐assembling offer improved selectivity and sensitivity in biosensing disease biomarkers. Herein, the current strategies for preparing noble metal self‐assemblies are summarized, with particular emphasis on the driving forces triggering the assembling process. The functions that noble metal self‐assemblies exert in biosensing systems are then reviewed, highlighting their potential to be integrated into diagnostic applications. It is foreseen that noble metal self‐assembly brings far‐reaching implications in clinical diagnosis, serving as advanced tools to unlock the power of translational medicine.

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Section: Other Strategiesmentioning

confidence: 99%

Section: Current Strategies Of Noble Metal Self‐assemblingmentioning

confidence: 99%

Emerging Biosensors Based on Noble Metal Self‐Assembly for In Vitro Disease Diagnosis

Qian²,

Huang

2023

Advanced NanoBiomed Research

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“…In the fiber structure, end-face-based fiber optic probes are the most commonly used method, which fixed metal nanostructures directly onto the fiber end face. ,, However, the laser is limited by the propagation of the fiber core and only excites the metal nanoparticles around the fiber core, which reduces the detection sensitivity of the optical fiber SERS sensor. In order to solve this problem, tapered fiber tip structures have been proposed. − It does increase the interaction area between laser and metal nanostructures, but the extremely fine tapered tips lead to laser and Raman signal attenuation. In addition, the used tips are usually very fragile and require special protection.…”

Section: Introductionmentioning

confidence: 99%

Fiber Optic SERS Sensor with Silver Nanocubes Attached Based on Evanescent Wave for Detecting Pesticide Residues

Tao,

Ge,

Dai

et al. 2023

ACS Appl. Mater. Interfaces

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Surface-enhanced Raman scattering (SERS) has great potential in the field of rapid detection of pesticide residues in food. In this paper, a fiber optic SERS sensor excited by evanescent waves was proposed for efficient detection of thiram. Silver nanocubes (Ag NCs) were prepared as SERS active substrates, which had much stronger electromagnetic field intensity than nanospheres under laser excitation due to much more "hot spots". By using the method of electrostatic adsorption and laser induction, Ag NCs were uniformly assembled at the fiber taper waist (FTW) for enhancing the Raman signal. Different from the traditional way of stimulation, evanescent wave excitation greatly increased the interaction area between the excitation and analyte, while reducing the damage of the excited light to the metal nanostructures. The methods proposed in this work have been successfully used to detect the pesticide residues of thiram and showed good detection performance. The detection limits for 4-Mercaptobenzoic acid (4-MBA) and thiram were determined to be 10 −9 and 10 −8 M, the corresponding enhancement factor could be 1.64 × 10 5 and 6.38 × 10 4 . Low concentration of thiram was detected in the peels of tomatoes and cucumbers, indicating its feasibility in actual sample detection. The combination of evanescent waves and SERS provides a new direction for the application of SERS sensors, which had great application potential in the field of pesticide residue detection.

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“…In addition, TOF processing accuracy is high, and the preparation process is relatively easy to control with high reproducibility. At the same time, TOF has a large surface area at the tapered structure, which can better contact the analyte, thus improving the sensing effect [ 40 ]. Furthermore, the TOF sensor design is flexible and can realize different functions of the sensor by changing its angular structure, sensing medium, and sensing layer.…”

Section: Introductionmentioning

confidence: 99%

Advances in Tapered Optical Fiber Sensor Structures: From Conventional to Novel and Emerging

et al. 2023

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Optical fiber sensors based on tapered optical fiber (TOF) structure have attracted a considerable amount of attention from researchers due to the advantages of simple fabrication, high stability, and diverse structures, and have great potential for applications in many fields such as physics, chemistry, and biology. Compared with conventional optical fibers, TOF with their unique structural characteristics significantly improves the sensitivity and response speed of fiber-optic sensors and broadens the application range. This review presents an overview of the latest research status and characteristics of fiber-optic sensors and TOF sensors. Then, the working principle of TOF sensors, fabrication schemes of TOF structures, novel TOF structures in recent years, and the growing emerging application areas are described. Finally, the development trends and challenges of TOF sensors are prospected. The objective of this review is to convey novel perspectives and strategies for the performance optimization and design of TOF sensors based on fiber-optic sensing technologies.

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Stick-slip-motion-assisted interfacial self-assembly of noble metal nanoparticles on tapered optical fiber surface and its application in SERS detection

Cited by 18 publications

References 39 publications

Emerging Biosensors Based on Noble Metal Self‐Assembly for In Vitro Disease Diagnosis

Emerging Biosensors Based on Noble Metal Self‐Assembly for In Vitro Disease Diagnosis

Fiber Optic SERS Sensor with Silver Nanocubes Attached Based on Evanescent Wave for Detecting Pesticide Residues

Advances in Tapered Optical Fiber Sensor Structures: From Conventional to Novel and Emerging

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