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Moeglen-Paget B, Perumal J, Humbert G, Olivo M, Dinish US. Optofluidic photonic crystal fiber platform for sensitive and reliable fluorescence based biosensing. BIOMEDICAL OPTICS EXPRESS 2024; 15:4281-4291. [PMID: 39022532 PMCID: PMC11249680 DOI: 10.1364/boe.527248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/11/2024] [Revised: 05/23/2024] [Accepted: 05/24/2024] [Indexed: 07/20/2024]
Abstract
Biosensing plays a pivotal role in various scientific domains, offering significant contributions to medical diagnostics, environmental monitoring, and biotechnology. Fluorescence biosensing relies on the fluorescence emission from labelled biomolecules to enable sensitive and selective identification and quantification of specific biological targets in various samples. Photonic crystal fibers (PCFs) have led to the development of optofluidic fibers enabling efficient light-liquid interaction within small liquid volume. Herein, we present the development of a user-friendly optofluidic-fiber platform with simple hardware requirements for sensitive and reliable fluorescence biosensing with high measurement repeatability. We demonstrate a sensitivity improvement of the fluorescence emission up to 17 times compared to standard cuvette measurement, with a limit of detection of Cy5 fluorophore as low as 100 pM. The improvement in measurement repeatability is exploited for detecting haptoglobin protein, a relevant biomarker to diagnose several diseases, by using commercially available Cy5 labelled antibodies. The study aims to showcase an optofluidic platform leveraging the benefits provided by optofluidic fibers, which encompass easy light injection, robustness, and high sensitivity.
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Affiliation(s)
- Baptiste Moeglen-Paget
- Xlim Research Institute, UMR 7252, CNRS, Université de Limoges, 123 Avenue Albert Thomas, 87000 Limoges, France
- A*STAR Skin Research Labs (A*SRL), Agency for Science, Technology and Research (A*STAR), 31 Biopolis Way, #07-01 Nanos, Singapore 138669, Republic of Singapore
| | - Jayakumar Perumal
- A*STAR Skin Research Labs (A*SRL), Agency for Science, Technology and Research (A*STAR), 31 Biopolis Way, #07-01 Nanos, Singapore 138669, Republic of Singapore
| | - Georges Humbert
- A*STAR Skin Research Labs (A*SRL), Agency for Science, Technology and Research (A*STAR), 31 Biopolis Way, #07-01 Nanos, Singapore 138669, Republic of Singapore
| | - Malini Olivo
- Xlim Research Institute, UMR 7252, CNRS, Université de Limoges, 123 Avenue Albert Thomas, 87000 Limoges, France
| | - U S Dinish
- Xlim Research Institute, UMR 7252, CNRS, Université de Limoges, 123 Avenue Albert Thomas, 87000 Limoges, France
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Schartner EP, Warren-Smith SC, Nguyen LV, Otten D, Yu Z, Lancaster DG, Ebendorff-Heidepriem H. Single-peak fiber Bragg gratings in suspended-core optical fibers. OPTICS EXPRESS 2020; 28:23354-23362. [PMID: 32752333 DOI: 10.1364/oe.397537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Accepted: 07/01/2020] [Indexed: 06/11/2023]
Abstract
Femtosecond laser inscribed fiber Bragg gratings in pure-silica suspended-core optical fibers have previously been demonstrated as a promising platform for high temperature sensing. However, the density of gratings that could be written on a single fiber was limited by undesired reflections associated with higher order modes in these high numerical aperture fibers. This resulted in a complex, broadband reflection spectrum with limited multiplexing capability. In this work we utilize modifications to the fine structure of the suspended core optical fibers to fine tune the relative confinement loss of the optical fiber modes, thus reducing the contribution from such higher order modes. The effects of these changes on mode propagation are modeled, giving a range of fibers with different confinement loss properties which can be tailored to the specific length scale of a desired application. We achieve single-peak reflections from individual fiber Bragg gratings, significantly improving performance for multipoint sensing and demonstrate this technique by writing 20 gratings onto a single fiber.
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Pidenko SA, Burmistrova NA, Shuvalov AA, Chibrova AA, Skibina YS, Goryacheva IY. Microstructured optical fiber-based luminescent biosensing: Is there any light at the end of the tunnel? - A review. Anal Chim Acta 2018; 1019:14-24. [DOI: 10.1016/j.aca.2017.12.010] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Revised: 11/30/2017] [Accepted: 12/03/2017] [Indexed: 11/26/2022]
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Schartner EP, Henderson MR, Purdey M, Dhatrak D, Monro TM, Gill PG, Callen DF. Cancer Detection in Human Tissue Samples Using a Fiber-Tip pH Probe. Cancer Res 2017; 76:6795-6801. [PMID: 27903493 DOI: 10.1158/0008-5472.can-16-1285] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Revised: 08/24/2016] [Accepted: 09/13/2016] [Indexed: 11/16/2022]
Abstract
Intraoperative detection of tumorous tissue is an important unresolved issue for cancer surgery. Difficulty in differentiating between tissue types commonly results in the requirement for additional surgeries to excise unremoved cancer tissue or alternatively in the removal of excess amounts of healthy tissue. Although pathologic methods exist to determine tissue type during surgery, these methods can compromise postoperative pathology, have a lag of minutes to hours before the surgeon receives the results of the tissue analysis, and are restricted to excised tissue. In this work, we report the development of an optical fiber probe that could potentially find use as an aid for margin detection during surgery. A fluorophore-doped polymer coating is deposited on the tip of an optical fiber, which can then be used to record the pH by monitoring the emission spectra from this dye. By measuring the tissue pH and comparing with the values from regular tissue, the tissue type can be determined quickly and accurately. The use of a novel lift-and-measure technique allows for these measurements to be performed without influence from the inherent autofluorescence that commonly affects fluorescence-based measurements on biological samples. The probe developed here shows strong potential for use during surgery, as the probe design can be readily adapted to a low-cost portable configuration, which could find use in the operating theater. Use of this probe in surgery either on excised or in vivo tissue has the potential to improve success rates for complete removal of cancers. Cancer Res; 76(23); 6795-801. ©2016 AACR.
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Affiliation(s)
- Erik P Schartner
- Institute for Photonics and Advanced Sensing, School of Physical Sciences, The University of Adelaide, Adelaide, Australia. .,ARC Centre for Nanoscale BioPhotonics, The University of Adelaide, Adelaide, Australia
| | - Matthew R Henderson
- Institute for Photonics and Advanced Sensing, School of Physical Sciences, The University of Adelaide, Adelaide, Australia
| | - Malcolm Purdey
- Institute for Photonics and Advanced Sensing, School of Physical Sciences, The University of Adelaide, Adelaide, Australia.,ARC Centre for Nanoscale BioPhotonics, The University of Adelaide, Adelaide, Australia.,Heart Health Theme, South Australian Health and Medical Research Institute, Adelaide, Australia
| | | | - Tanya M Monro
- Institute for Photonics and Advanced Sensing, School of Physical Sciences, The University of Adelaide, Adelaide, Australia.,ARC Centre for Nanoscale BioPhotonics, The University of Adelaide, Adelaide, Australia.,University of South Australia, Adelaide, Australia
| | - P Grantley Gill
- Department of Surgery, University of Adelaide & Breast, Endocrine & Surgical Oncology Unit, Royal Adelaide Hospital, Adelaide, Australia
| | - David F Callen
- Centre for Personalised Cancer Medicine, School of Medicine, University of Adelaide, Adelaide, Australia
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Schartner EP, Tsiminis G, Henderson MR, Warren-Smith SC, Monro TM. Quantification of the fluorescence sensing performance of microstructured optical fibers compared to multi-mode fiber tips. OPTICS EXPRESS 2016; 24:18541-18550. [PMID: 27505817 DOI: 10.1364/oe.24.018541] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Microstructured optical fibers, particularly those with a suspended-core geometry, have frequently been argued as efficient evanescent-field fluorescence-based sensors. However, to date there has not been a systematic comparison between such fibers and the more common geometry of a multi-mode fiber tip sensor. In this paper we make a direct comparison between these two fiber sensor geometries both theoretically and experimentally. Our results confirm that suspended-core fibers provide a significant advantage in terms of total collected fluorescence signal compared to multi-mode fibers using an equivalent experimental configuration.
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