Bacterial Detection and Differentiation of Staphylococcus aureus and Escherichia coli Utilizing Long-Period Fiber Gratings Functionalized with Nanoporous Coated Structures
Source abstract
Abstract
A biosensor utilizing long-period fiber gratings (LPFG) functionalized with nanoporous coated structures was developed for the rapid detection of Staphylococcus aureus (S. aureus) bacteria. The nanoporous structure coatings on the LPFG surface facilitated specific adhesion and interaction with S. aureus, resulting in an instantaneous shift in the resonance wavelength (RW) in the transmission spectrum of the LPFG. The LPFG with nanoporous polyelectrolyte coatings exhibited an approximately seven-fold RW shift compared to the bare LPFG under the optimal experiment conditions. By tracking the RW shifts, we were able to monitor the real-time S. aureus adhesion to study the interaction process in detail. The bacterial differentiation and S. aureus specificity of the method was confirmed through a series of studies using Escherichia coli (E. coli). This nanoporous structure-enabled LPFG-based biosensor scheme holds significant promise for rapid, reliable, and low-cost detection of S. aureus for biomedical applications.
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Research context
OpenAlex topics: Advanced Fiber Optic Sensors · Photonic and Optical Devices · Acoustic Wave Resonator Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Chemical Engineering and Materials Science, Stevens Institute of Technology, Hoboken, NJ 07030, USA
Department of Chemistry and Chemical Biology, Stevens Institute of Technology, Hoboken, NJ 07030, USA
Department of Materials Research, Zhuzhou Cemented Carbide Cutting Tools Co., Ltd., Diamond Industrial Park, No. 28 South Huanghe Road, Tianyuan District, Zhuzhou 412007, China
National Innovation Center for Advanced Rail Transit Equipment, Zhuzhou 412001, China
Hunan Engineering Technology Research Center of Intelligent Sensing and Maintenance for Railway Transportation Equipment, Zhuzhou 412001, China
School of Mechanical Engineering and Mechanics, Xiangtan University, Xiangtan 411105, China
Funding
US National Science Foundation · Hunan Provincial Science and Technology Achievement and Industry Program
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