High-performance plasmonic lab-on-fiber sensing system constructed by universal polymer assisted transfer technique

Area of Science:

• Nanotechnology
• Optical Sensors
• Materials Science

Background:

• Plasmonic lab-on-fiber (LOF) systems are emerging as miniaturized and portable sensing platforms.
• Existing fabrication methods for plasmonic LOF systems can be complex and limit scalability.

Purpose of the Study:

• To develop a facile and efficient polymer-assisted transfer technique for preparing plasmonic LOF systems.
• To demonstrate the effectiveness of this technique for creating high-performance plasmonic sensors.

Main Methods:

• Utilized polylactic acid as a sacrificial layer for transferring plasmonic arrays to optical fiber end surfaces.
• Investigated the morphology preservation of transferred plasmonic arrays.
• Evaluated the sensing performance for refractive index and label-free biosensing.

Main Results:

• The polymer-assisted transfer technique successfully created plasmonic LOF systems with excellent morphology consistency.
• The fabricated systems exhibited outstanding sensing performance in refractive index and quantitative label-free biosensing.
• The technique demonstrated broad universality for various plasmonic arrays.

Conclusions:

• The polymer-assisted transfer technique offers a simple and efficient route to fabricate advanced plasmonic LOF sensors.
• This method holds significant potential for the development of future miniaturized and portable plasmonic sensing devices.
• The technique's versatility makes it suitable for a wide range of plasmonic array applications.