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G A, T T, Ramakrishnan S. Fluorescence Nano Particle Detection in a Liquid Sample Using the Smartphone for Biomedical Application. J Fluoresc 2021; 32:135-143. [PMID: 34633596 DOI: 10.1007/s10895-021-02799-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Accepted: 08/03/2021] [Indexed: 11/26/2022]
Abstract
In this paper, we present a Smartphone-based Fluorescence Nanoparticle Detector (SPF-NPD) that can be used for identifying biological agents in biomedical applications. The experimental setup consists of an LED light source and an Eppendorf tube holder placed inside a dark chamber with an optimally located slit for aligning the camera of a smartphone. The camera acquires the fluorescence intensity variations in the target liquid sample placed in the Eppendorf tube and passes it to a dedicated android application running in the smartphone. Using the principle of fluorescence-based pathogen detection, the android application detects the pathogens and displays the results within a few seconds. Since, all smartphones are equipped with high-resolution cameras, the proposed SPF-NPD provides a simple and elegant solution for instantaneous detection of fluorescence nano particles and has a great potential for healthcare applications for live detection of pathogens. The intensity measurement in SPF-NPD algorithm uses 5-pixel method, that is, the center pixel followed by four immediate neighbor pixels, because of which, minimal sample quantity is sufficient for precise measurements. We establish the robustness of SPF-NPD through exhaustive experiments with various smartphone cameras having different resolutions ranging from 8 to 20 Megapixels. The results of the proposed SPF-NPD method are validated against those obtained from standard devices such as Perkin-Elmer Picoflor and Perkin-Elmer Enspire. The advantages of the proposed method are highlighted.
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Affiliation(s)
- Anand G
- Department of Instrumentation Engineering, Madras Institute of Technology Campus, Anna University, Chennai, India.
| | - Thyagarajan T
- Department of Instrumentation Engineering, Madras Institute of Technology Campus, Anna University, Chennai, India
| | - Sabitha Ramakrishnan
- Department of Instrumentation Engineering, Madras Institute of Technology Campus, Anna University, Chennai, India
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Nessark F, Zouaoui A, Garcia-Cruz A, Bonhomme A, Lee M, Nessark B, Zine N, Marote P, Bausells J, Baraket A, Errachid A. Fabrication of new polypyrrole/silicon nitride hybrid materials for potential applications in electrochemical sensors: Synthesis and characterization. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2017. [DOI: 10.1080/10601325.2017.1336728] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Faiza Nessark
- Institut des Sciences Analytiques (ISA), Université Claude Bernard Lyon 1, 5 rue de la Doua, Villeurbanne cedex, France
- Laboratoire d'Electrochimie et Matériaux (LEM), Université Ferhat Abbas Sétif 1, Algeria
| | - Ahmed Zouaoui
- Laboratoire de Croissance et Caractérisation de Nouveaux Semi-conducteurs (LCCNS), Université Ferhat Abbas Sétif 1, Algeria
| | - Alvaro Garcia-Cruz
- Institut des Sciences Analytiques (ISA), Université Claude Bernard Lyon 1, 5 rue de la Doua, Villeurbanne cedex, France
| | - Anne Bonhomme
- Institut des Sciences Analytiques (ISA), Université Claude Bernard Lyon 1, 5 rue de la Doua, Villeurbanne cedex, France
| | - Michael Lee
- Institut des Sciences Analytiques (ISA), Université Claude Bernard Lyon 1, 5 rue de la Doua, Villeurbanne cedex, France
| | - Belkacem Nessark
- Laboratoire d'Electrochimie et Matériaux (LEM), Université Ferhat Abbas Sétif 1, Algeria
| | - Nadia Zine
- Institut des Sciences Analytiques (ISA), Université Claude Bernard Lyon 1, 5 rue de la Doua, Villeurbanne cedex, France
| | - Pedro Marote
- Institut des Sciences Analytiques (ISA), Université Claude Bernard Lyon 1, 5 rue de la Doua, Villeurbanne cedex, France
| | - Joan Bausells
- Centro Nacional de Microelectrónica (CNM), Universidad Autónoma de Barcelona, Bellaterra, Spain
| | - Abdoullatif Baraket
- Institut des Sciences Analytiques (ISA), Université Claude Bernard Lyon 1, 5 rue de la Doua, Villeurbanne cedex, France
| | - Abdelhamid Errachid
- Institut des Sciences Analytiques (ISA), Université Claude Bernard Lyon 1, 5 rue de la Doua, Villeurbanne cedex, France
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