DataVXACS Applied Nano MaterialsPaper
journal article·2026-02-27

Nanostructure-Modified Optical Fiber Sensors for Detection of Salmonella typhimurium in Food

Shuai Wang, Huibo Han, Sandeep Boddu, Ragini Singh, Ben Niu, Penglei Zhou, Fei Liu, Xian Zhou, Bingyuan Zhang, Santosh Kumar

ACS Applied Nano Materials· Volume 9· Issue 8
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Source abstract

Abstract

In this study, a nanostructure-modified bulge-tapered-bulge (BTB) optical fiber sensor was developed for the rapid and label-free detection of Salmonella typhimurium ( S. typhimurium ) in food samples. The BTB design improves the evanescent field interaction, and immobilized gold nanoparticles (AuNPs), copper sulfide nanoflowers (CuS-NFs), and nickel ferrite (NiFe 2 O 4 ) cause localized surface plasmon resonance (LSPR), which amplifies the optical response to biomolecular interactions. The sensing surface was modified with S. typhimurium -specific antibodies that selectively recognize the antigen–antibody interactions. The fabricated sensor exhibited ultrahigh selectivity for nontarget bacteria, including Escherichia coli, Listeria monocytogenes, and Vibrio cholerae, and good stability against sodium dodecyl sulfate (SDS) treatment, pH variations, and environmental fluctuations in temperature and salinity. The detection range was −10 1 –10 9 CFU/mL, and a low detection limit of 1 CFU/mL was achieved. These results demonstrate that the BTB fiber sensor has the potential for the sensitive, selective, and on-site detection of foodborne pathogens and can be used in the field of food safety.
Source: openalex_inverted_index · Quality: baseline

Research context

Nanomaterials

OpenAlex topics: Advanced Fiber Optic Sensors · Biosensors and Analytical Detection · Polydiacetylene-based materials and applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Shandong Key Laboratory of Optical Communication Science and Technology, School of Physics Science and Information Technology

Liaocheng University

Centre of Excellence for Nanotechnology, Department of Electronics and Communication Engineering

Koneru Lakshmaiah Education Foundation

Department of Biotechnology

Postdoctoral Research Station

Vital Optics Technology Co., Ltd.

Beijing Zhongchen Xinguang Technology Co., Ltd, No.101, first Floor, Building 1, 99-1 Huayugou Yard, Chaoyang District, Beijing 100080, China

School of Computer and Communication Engineering

University of Science and Technology Beijing (USTB)

Shunde Graduate School of University of Science and Technology Beijing

Funding

Science and Technology Support Plan for Youth Innovation of Colleges and Universities of Shandong Province of China · National Key Research and Development Program of China · Koneru Lakshmaiah Education Foundation · Anusandhan National Research Foundation

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