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Kolchanov DS, Machnev A, Blank A, Barhom H, Zhu L, Lin Q, Inberg A, Rusimova KR, Mikhailova MA, Gumennik A, Salgals T, Bobrovs V, Valev VK, Mosley PJ, Ginzburg P. Thermo-optics of gilded hollow-core fibers. NANOSCALE 2024; 16:13945-13952. [PMID: 38980062 PMCID: PMC11271976 DOI: 10.1039/d3nr05310e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Accepted: 05/06/2024] [Indexed: 07/10/2024]
Abstract
Hollow core fibers, supporting waveguiding in a void, open a room of opportunities for numerous applications owing to an extended light-matter interaction distance and relatively high optical confinement. Decorating an inner capillary with functional materials allows tailoring the fiber's optical properties further and turns the structure into a functional device. Here, we functionalize an anti-resonant hollow-core fiber with 18 nm-size gold nanoparticles, approaching a uniform 45% surface coverage along 10 s of centimeters along its inner capillary. Owing to a moderately low overlap between the fundamental mode and the gold layer, the fiber maintains its high transmission properties; nevertheless, the entire structure experiences considerable heating, which is observed and quantified with the aid of a thermal camera. The hollow core and the surrounding capillary are subsequently filled with ethanol and thermo-optical heating is demonstrated. We also show that at moderate laser intensities, the liquid inside the fiber begins to boil and, as a result, the optical guiding is destroyed. The gilded hollow core fiber and its high thermal-optical responsivity suggest considering the structure as an efficient optically driven catalytic reactor in applications where either small reaction volumes or remote control over a process are demanded.
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Affiliation(s)
- Denis S Kolchanov
- Department of Electrical Engineering, Tel Aviv University, Ramat Aviv, Tel Aviv, 69978, Israel.
| | - Andrey Machnev
- Department of Electrical Engineering, Tel Aviv University, Ramat Aviv, Tel Aviv, 69978, Israel.
| | - Alexandra Blank
- Department of Electrical Engineering, Tel Aviv University, Ramat Aviv, Tel Aviv, 69978, Israel.
| | - Hani Barhom
- Department of Electrical Engineering, Tel Aviv University, Ramat Aviv, Tel Aviv, 69978, Israel.
- Israel Triangle Regional Research and Development Center, Kfar Qara' 3007500, Israel
| | - Liangquan Zhu
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710054, China
| | - Qijing Lin
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710054, China
| | - Alexandra Inberg
- Department of Electrical Engineering, Tel Aviv University, Ramat Aviv, Tel Aviv, 69978, Israel.
| | - Kristina R Rusimova
- Center for Photonics and Photonic Materials, Department of Physics, University of Bath, Bath BA2 7AY, UK
| | - Mariia A Mikhailova
- Department of Materials Science and Engineering, Faculty of Engineering, Tel Aviv University, Tel Aviv 69978, Israel
| | - Alexander Gumennik
- Department of Intelligent Systems Engineering, Luddy School of Informatics, Computing, and Engineering, Indiana University Bloomington, Bloomington, IN, USA
| | - Toms Salgals
- Institute of Telecommunications, Riga Technical University, Riga, Latvia
| | - Vjačeslavs Bobrovs
- Institute of Telecommunications, Riga Technical University, Riga, Latvia
| | - Ventsislav K Valev
- Center for Photonics and Photonic Materials, Department of Physics, University of Bath, Bath BA2 7AY, UK
| | - Peter J Mosley
- Center for Photonics and Photonic Materials, Department of Physics, University of Bath, Bath BA2 7AY, UK
| | - Pavel Ginzburg
- Department of Electrical Engineering, Tel Aviv University, Ramat Aviv, Tel Aviv, 69978, Israel.
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Heck JR, Miele E, Mouthaan RP, Frosz MH, Knowles TPJ, Euser TG. Label-free monitoring of proteins in optofluidic hollow-core photonic crystal fibres. Methods Appl Fluoresc 2022; 10. [PMID: 36084629 DOI: 10.1088/2050-6120/ac9113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 09/09/2022] [Indexed: 11/11/2022]
Abstract
The fluorescent detection of proteins without labels or stains, which affect their behaviour and require additional genetic or chemical preparation, has broad applications to biological research. However, standard approaches require large sample volumes or analyse only a small fraction of the sample. Here we use optofluidic hollow-core photonic crystal fibres to detect and quantify sub-microlitre volumes of unmodified bovine serum albumin (BSA) protein down to 100 nM concentrations. The optofluidic fibre's waveguiding properties are optimised for guidance at the (auto)fluorescence emission wavelength, enabling fluorescence collection from a 10 cm long excitation region, increasing sensitivity. The observed spectra agree with spectra taken from a conventional cuvette-based fluorimeter, corrected for the guidance properties of the fibre. The BSA fluorescence depended linearly on BSA concentration, while only a small hysteresis effect was observed, suggesting limited biofouling of the fibre sensor. Finally, we briefly discuss how this method could be used to study aggregation kinetics. With small sample volumes, the ability to use unlabelled proteins, and continuous flow, the method will be of interest to a broad range of protein-related research.
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Affiliation(s)
- Jan Robert Heck
- Department of Physics, Cambridge University, JJ Thomson Ave, Cambridge, CB3 071, UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND
| | - Ermanno Miele
- Department of Physics, Cambridge University, JJ Thomson Ave, Cambridge, Cambridgeshire, CB2 1TN, UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND
| | - Ralf P Mouthaan
- Department of Physics, Cambridge University, JJ Thomson Ave, Cambridge, Cambridgeshire, CB2 1TN, UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND
| | - Michael H Frosz
- Max Planck Institute for the Science of Light, Max-Planck-Institut fuer die Physik des Lichts, Staudtstr. 2, Erlangen, 91058, GERMANY
| | - Tuomas P J Knowles
- Department of Physics, Cambridge University, JJ Thomson Ave, Cambridge, Cambridgeshire, CB2 1TN, UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND
| | - Tijmen G Euser
- Department of Physics, Cambridge University, JJ Thomson Ave, Cambridge, Cambridgeshire, CB2 1TN, UNITED KINGDOM OF GREAT BRITAIN AND NORTHERN IRELAND
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Zhao X, Yao N, Zhang X, Zhang L, Tao G, Li Z, Liu Q, Zhao X, Xu Y. Optimizing Evanescent Efficiency of Chalcogenide Tapered Fiber. MATERIALS 2022; 15:ma15113834. [PMID: 35683134 PMCID: PMC9181228 DOI: 10.3390/ma15113834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 05/18/2022] [Accepted: 05/24/2022] [Indexed: 12/10/2022]
Abstract
Evanescent wave absorption-based mid-infrared chalcogenide fiber sensors have prominent advantages in multicomponent liquid and gas detection. In this work, a new approach of tapered-fiber geometry optimization was proposed, and the evanescent efficiency was also theoretically calculated to evaluate sensing performance. The influence of fiber geometry (waist radius (Rw), taper length (Lt), waist deformation) on the mode distribution, light transmittance (T), evanescent proportion (TO) and evanescent efficiency (τ) is discussed. Remarkably, the calculated results show that the evanescent efficiency can be over 10% via optimizing the waist radius and taper length. Generally, a better sensing performance based on tapered fiber can be achieved if the proportion of the LP11-like mode becomes higher or Rw becomes smaller. Furthermore, the radius of the waist boundary (RL) was introduced to analyze the waist deformation. Mode proportion is almost unchanged as the RL increases, while τ is halved. In addition, the larger the micro taper is, the easier the taper process is. Herein, a longer waist can be obtained, resulting in larger sensing area which increases sensitivity greatly.
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Affiliation(s)
- Xudong Zhao
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China; (X.Z.); (X.Z.); (Z.L.); (Q.L.); (X.Z.)
| | - Ni Yao
- Research Center for Intelligent Sensing, Zhejiang Laboratory, Hangzhou 311121, China;
- Correspondence: (N.Y.); (Y.X.)
| | - Xianghua Zhang
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China; (X.Z.); (X.Z.); (Z.L.); (Q.L.); (X.Z.)
- Laboratoire des Verres et Céramiques, UMR-CNRS 6226, Sciences Chimiques de Rennes, Université de Rennes 1, 35042 Rennes, France
| | - Lei Zhang
- Research Center for Intelligent Sensing, Zhejiang Laboratory, Hangzhou 311121, China;
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Guangming Tao
- Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China;
| | - Zijian Li
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China; (X.Z.); (X.Z.); (Z.L.); (Q.L.); (X.Z.)
| | - Quan Liu
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China; (X.Z.); (X.Z.); (Z.L.); (Q.L.); (X.Z.)
| | - Xiujian Zhao
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China; (X.Z.); (X.Z.); (Z.L.); (Q.L.); (X.Z.)
| | - Yinsheng Xu
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China; (X.Z.); (X.Z.); (Z.L.); (Q.L.); (X.Z.)
- Correspondence: (N.Y.); (Y.X.)
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Merdalimova AA, Rudakovskaya PG, Ermatov TI, Smirnov AS, Kosolobov SS, Skibina JS, Demina PA, Khlebtsov BN, Yashchenok AM, Gorin DA. SERS Platform Based on Hollow-Core Microstructured Optical Fiber: Technology of UV-Mediated Gold Nanoparticle Growth. BIOSENSORS 2021; 12:19. [PMID: 35049647 PMCID: PMC8774134 DOI: 10.3390/bios12010019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 12/27/2021] [Accepted: 12/28/2021] [Indexed: 11/19/2022]
Abstract
Surface-enhanced Raman spectroscopy (SERS) is a powerful technique for biosensing. However, SERS analysis has several concerns: the signal is limited by a number of molecules and the area of the plasmonic substrate in the laser hotspot, and quantitative analysis in a low-volume droplet is confusing due to the change of concentration during quick drying. The usage of hollow-core microstructured optical fibers (HC-MOFs) is thought to be an effective way to improve SERS sensitivity and limit of detection through the effective irradiation of a small sample volume filling the fiber capillaries. In this paper, we used layer-by-layer assembly as a simple method for the functionalization of fiber capillaries by gold nanoparticles (seeds) with a mean diameter of 8 nm followed by UV-induced chloroauric acid reduction. We also demonstrated a simple and quick technique used for the analysis of the SERS platform formation at every stage through the detection of spectral shifts in the optical transmission of HC-MOFs. The enhancement of the Raman signal of a model analyte Rhodamine 6G was obtained using such type of SERS platform. Thus, a combination of nanostructured gold coating as a SERS-active surface and a hollow-core fiber as a microfluidic channel and a waveguide is perspective for point-of-care medical diagnosis based on liquid biopsy and exhaled air analysis.
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Affiliation(s)
- Anastasiia A. Merdalimova
- Center for Photonic Science and Engineering, Skolkovo Institute of Science and Technology, 3 Nobel str, 121205 Moscow, Russia; (P.G.R.); (T.I.E.); (A.M.Y.)
| | - Polina G. Rudakovskaya
- Center for Photonic Science and Engineering, Skolkovo Institute of Science and Technology, 3 Nobel str, 121205 Moscow, Russia; (P.G.R.); (T.I.E.); (A.M.Y.)
| | - Timur I. Ermatov
- Center for Photonic Science and Engineering, Skolkovo Institute of Science and Technology, 3 Nobel str, 121205 Moscow, Russia; (P.G.R.); (T.I.E.); (A.M.Y.)
| | - Alexander S. Smirnov
- Center for Design, Manufacturing and Materials, Skolkovo Institute of Science and Technology, 1 Nobel str, 121205 Moscow, Russia; (A.S.S.); (S.S.K.)
| | - Sergey S. Kosolobov
- Center for Design, Manufacturing and Materials, Skolkovo Institute of Science and Technology, 1 Nobel str, 121205 Moscow, Russia; (A.S.S.); (S.S.K.)
| | - Julia S. Skibina
- SPE LLC Nanostructured Glass Technology, 101 50 Let Oktjabrja str, 410033 Saratov, Russia;
| | - Polina A. Demina
- FSRC “Crystallography and Photonics” RAS, 59 Leninsky pr., 119333 Moscow, Russia;
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry RAS, Miklukho-Maklaya str. 16/10, 117997 Moscow, Russia
| | - Boris N. Khlebtsov
- Saratov Scientific Centre of the Russian Academy of Sciences (IBPPM RAS), Institute of Biochemistry and Physiology of Plants and Microorganisms, 410049 Saratov, Russia;
| | - Alexey M. Yashchenok
- Center for Photonic Science and Engineering, Skolkovo Institute of Science and Technology, 3 Nobel str, 121205 Moscow, Russia; (P.G.R.); (T.I.E.); (A.M.Y.)
| | - Dmitry A. Gorin
- Center for Photonic Science and Engineering, Skolkovo Institute of Science and Technology, 3 Nobel str, 121205 Moscow, Russia; (P.G.R.); (T.I.E.); (A.M.Y.)
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Ermatov T, Gnusov I, Skibina J, Noskov RE, Gorin D. Noncontact characterization of microstructured optical fibers coating in real time. OPTICS LETTERS 2021; 46:4793-4796. [PMID: 34598201 DOI: 10.1364/ol.433208] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Accepted: 09/01/2021] [Indexed: 06/13/2023]
Abstract
Functional nanocoatings have allowed hollow-core microstructured optical fibers (HC-MOFs) to be introduced into biosensing and photochemistry applications. However, common film characterization tools cannot evaluate the coating performance in situ. Here we report the all-optical noncontact characterization of the HC-MOF coating in real time. Self-assembled multilayers consisting of inversely charged polyelectrolytes (PEs) are deposited on the HC-MOF core capillary, and a linear spectral shift in the position of the fiber transmission minima with increasing the film thickness is observed as small as ∼1.5-6nm per single PE bilayer. We exemplify the practical performance of our approach by registering an increase in the coating thickness from 6±1 to 11±1nm per PE bilayer with increasing ionic strength in the PE solutions from 0.15 to 0.5 M NaCl. Additionally, we show real-time monitoring of pH-induced coating dissolving. Simplicity and high sensitivity make our approach a promising tool allowing noncontact analysis of the HC-MOF coating which is still challenging for other methods.
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Burmistrova NA, Pidenko PS, Presnyakov KY, Drozd DD, Skibina YS, Pidenko SA, Goryacheva IY. Multicapillary Systems in Analytical Chemistry. JOURNAL OF ANALYTICAL CHEMISTRY 2021. [DOI: 10.1134/s1061934821050087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Perevoschikov S, Kaydanov N, Ermatov T, Bibikova O, Usenov I, Sakharova T, Bocharnikov A, Skibina J, Artyushenko V, Gorin D. Light guidance up to 6.5 µm in borosilicate soft glass hollow-core microstructured optical waveguides. OPTICS EXPRESS 2020; 28:27940-27950. [PMID: 32988076 DOI: 10.1364/oe.399410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Accepted: 08/06/2020] [Indexed: 06/11/2023]
Abstract
Limited operating bandwidth originated from strong absorption of glass materials in the infrared (IR) spectral region has hindered the potential applications of microstructured optical waveguide (MOW)-based sensors. Here, we demonstrate multimode waveguide regime up to 6.5 µm for the hollow-core (HC) MOWs drawn from borosilicate soft glass. Effective light guidance in central HC (diameter ∼240 µm) was observed from 0.4 to 6.5 µm despite high waveguide losses (0.4 and 1 dB/cm in near- and mid-IR, respectively). Additional optimization of the waveguide structure can potentially extend its operating range and decrease transmission losses, offering an attractive alternative to tellurite and chalcogenide-based fibers. Featuring the transparency in mid-IR, HC MOWs are promising candidates for the creation of MOW-based sensors for chemical and biomedical applications.
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