1
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Islam MS, Ferdous AI, Noor KS, Bani MM. Designing hollow-core PCF sensors for high-performance terahertz detection of NaCN and KCN. Heliyon 2024; 10:e37681. [PMID: 39315239 PMCID: PMC11417527 DOI: 10.1016/j.heliyon.2024.e37681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2024] [Revised: 08/15/2024] [Accepted: 09/08/2024] [Indexed: 09/25/2024] Open
Abstract
Cyanide is very poisonous and raises environmental problems because of its industrial application and potential as a terrorist weapon. Given CN's toxicity and possible hazard to people, an effective and adaptive detection approach is needed. This specification suggests using a PCF to build a terahertz Hexagonal Core and Curved rectangular air holes sensor to detect NaCN and KCN. The recently created PCF analysis, which was promptly delivered, reveals an RS concentration of 99.62 % for NaCN and a maximum concentration of KCN is 99.08 %. In addition, we analyzed the Confinement Loss (CL) at a value of 5.88 × 10-09 dB/m and 2.07 × 10-05 dB/m, as well as EML at values of 0.0020 cm-1 and 0.0026 cm-1, accordingly, about these hazardous substances. The designed detector can identify NaCN and KCN at low concentrations even with small RI shifts due to its high sensitivity. Real-time NaCN and KCN detection and monitoring through nerve reflexes is essential for life-threatening conditions. It can selectively work in NaCN and KCN, ensuring accurate detection even in complex chemical compositions. Additionally, its tiny size allows for emergency use.
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Affiliation(s)
- Md Safiul Islam
- Department of Electrical and Electronic Engineering, Pabna University of Science and Technology, Pabna- 6600,Pabna,Bangladesh
| | - A.H.M. Iftekharul Ferdous
- Department of Electrical and Electronic Engineering, Pabna University of Science and Technology, Pabna- 6600,Pabna,Bangladesh
| | - Khalid Sifulla Noor
- Department of Electrical and Electronic Engineering, Pabna University of Science and Technology, Pabna- 6600,Pabna,Bangladesh
| | - Most Momtahina Bani
- Department of Electrical and Electronic Engineering, Pabna University of Science and Technology, Pabna- 6600,Pabna,Bangladesh
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2
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Groom M, Miele E, Pinnell J, Ellis MG, McConnell JB, Sakr H, Jasion G, Davidson I, Wheeler N, Jung Y, Poletti F, Menkin S, Kamp M, Baumberg JJ, Euser TG. Microlens Hollow-Core Fiber Probes for Operando Raman Spectroscopy. ACS PHOTONICS 2024; 11:3167-3177. [PMID: 39184181 PMCID: PMC11342360 DOI: 10.1021/acsphotonics.4c00525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/21/2024] [Revised: 06/27/2024] [Accepted: 07/05/2024] [Indexed: 08/27/2024]
Abstract
We introduce a flexible microscale all-fiber-optic Raman probe which can be embedded into devices to enable operando in situ spectroscopy. The facile-constructed probe is composed of a nested antiresonant nodeless hollow-core fiber combined with an integrated high refractive index barium titanate microlens. Pump laser 785 nm excitation and near-infrared collection are independently characterized, demonstrating an excitation spot of full-width-half-maximum 1.1 μm. Since this is much smaller than the effective collection area, it has the greatest influence on the collected Raman scattering. Our characterization scheme provides a suitable protocol for testing the efficacy of these fiber probes using various combinations of fiber types and microspheres. Raman measurements on a surface-enhanced Raman spectroscopy sample and a copper battery electrode demonstrate the viability of the fiber probe as an alternative to bulk optic Raman microscopes, giving comparable collection to a 10 objective, thus paving the way for operando Raman studies in applications such as lithium battery monitoring.
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Affiliation(s)
- Megan
J. Groom
- Nanophotonics
Centre, Department of Physics, Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, U.K.
- The
Faraday Institution, Quad One, Harwell Science
and Innovation Campus, Didcot, Oxford OX11 0RA, U.K.
| | - Ermanno Miele
- Nanophotonics
Centre, Department of Physics, Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, U.K.
- The
Faraday Institution, Quad One, Harwell Science
and Innovation Campus, Didcot, Oxford OX11 0RA, U.K.
| | - Jonathan Pinnell
- Nanophotonics
Centre, Department of Physics, Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, U.K.
| | - Matthew G. Ellis
- Nanophotonics
Centre, Department of Physics, Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, U.K.
| | - Jessica B. McConnell
- The
Faraday Institution, Quad One, Harwell Science
and Innovation Campus, Didcot, Oxford OX11 0RA, U.K.
- Yusuf
Hamid Department of Chemistry, University
of Cambridge, Cambridge CB2 1EW, U.K.
| | - Hesham Sakr
- Optoelectronics
Research Centre, University of Southampton, Southampton SO17 1BJ, U.K.
| | - Gregory Jasion
- Optoelectronics
Research Centre, University of Southampton, Southampton SO17 1BJ, U.K.
| | - Ian Davidson
- Optoelectronics
Research Centre, University of Southampton, Southampton SO17 1BJ, U.K.
| | - Natalie Wheeler
- Optoelectronics
Research Centre, University of Southampton, Southampton SO17 1BJ, U.K.
| | - Yongmin Jung
- Optoelectronics
Research Centre, University of Southampton, Southampton SO17 1BJ, U.K.
| | - Francesco Poletti
- Optoelectronics
Research Centre, University of Southampton, Southampton SO17 1BJ, U.K.
| | - Svetlana Menkin
- The
Faraday Institution, Quad One, Harwell Science
and Innovation Campus, Didcot, Oxford OX11 0RA, U.K.
- Yusuf
Hamid Department of Chemistry, University
of Cambridge, Cambridge CB2 1EW, U.K.
| | - Marlous Kamp
- Nanophotonics
Centre, Department of Physics, Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, U.K.
- Van
‘t Hoff Laboratory for Physical & Colloid Chemistry, Department
of Chemistry, Utrecht University, Utrecht 3584 CH, The Netherlands
| | - Jeremy J. Baumberg
- Nanophotonics
Centre, Department of Physics, Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, U.K.
| | - Tijmen G. Euser
- Nanophotonics
Centre, Department of Physics, Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, U.K.
- The
Faraday Institution, Quad One, Harwell Science
and Innovation Campus, Didcot, Oxford OX11 0RA, U.K.
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3
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Beffara F, Humbert G, Auguste JL, Olivo M, U S D. Innovative suspended ring core fiber for SERS application. OPTICS EXPRESS 2024; 32:18216-18223. [PMID: 38858983 DOI: 10.1364/oe.516023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Accepted: 03/22/2024] [Indexed: 06/12/2024]
Abstract
Solid core photonic crystal fibers (SC-PCFs) have garnered attention as probes for surface-enhanced Raman spectroscopy (SERS) due to their potential as optofluidic devices, offering heightened sensitivity and reliability compared to traditional planar/colloidal nanoparticle-based SERS platforms. A smaller core allows for more light interaction but might compromise sensitivity and reliability due to reduced surface area for interaction. Here, we introduce an innovative SC-PCF design aimed at resolving the trade-off between increasing the evanescent field fraction and the core surface area. By substituting a suspended silica rod with a suspended thin-silica ring, we augment the surface area for attached nanoparticles by one order of magnitude while retaining a substantial amount of evanescent light interaction with the analyte. Experimental findings showcase an improved sensitivity in SERS signal compared to previously reported top-performing PCF sensor designs. Importantly, with necessary refinement and optimization, this innovative fiber design extends beyond SERS applications, potentially amplifying the sensitivity of various other fiber-based sensing platforms.
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4
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Xu Y, Zhang X, Zhu XS, Shi YW. Surface-Enhanced Raman Scattering in Silver-Coated Suspended-Core Fiber. SENSORS (BASEL, SWITZERLAND) 2023; 24:160. [PMID: 38203021 PMCID: PMC10781242 DOI: 10.3390/s24010160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 12/20/2023] [Accepted: 12/25/2023] [Indexed: 01/12/2024]
Abstract
In this paper, the silver-coated large-core suspended-core fiber (LSCF) probe was fabricated by the dynamic chemical liquid phase deposition method for surface-enhanced Raman scattering (SERS) sensing. The 4-mercaptophenylboronic acid (4-MPBA) monolayer was assembled in the LSCF as the recognition monolayer. Taking advantage of the appropriate core size of the LSCF, a custom-made Y-type optical fiber patch cable was utilized to connect the semiconductor laser, Raman spectrometer, and the proposed fiber SERS probe. The SERS signal is propagated in the silver-coated air channels, which can effectively reduce the Raman and fluorescence background of the silica core. Experiments were performed to measure the Raman scattering spectra of the 4-MPBA in the silver-coated LSCF in a non-enhanced and enhanced case. The experiment results showed that the Raman signal strength was enhanced more than 6 times by the surface plasmon resonance compared with the non-enhanced case. The proposed LSCF for SERS sensing technology provides huge research value for the fiber SERS probes in biomedicine and environmental science. The combination of SERS and microstructured optical fibers offers a potential approach for SERS detection.
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Affiliation(s)
- Yangyang Xu
- School of Information Science and Engineering, Fudan University, 220 Handan Rd, Shanghai 200433, China; (Y.X.); (X.Z.); (Y.-W.S.)
- Yiwu Research Institute of Fudan University, Chengbei Road, Yiwu City 322000, China
| | - Xian Zhang
- School of Information Science and Engineering, Fudan University, 220 Handan Rd, Shanghai 200433, China; (Y.X.); (X.Z.); (Y.-W.S.)
- Yiwu Research Institute of Fudan University, Chengbei Road, Yiwu City 322000, China
| | - Xiao-Song Zhu
- School of Information Science and Engineering, Fudan University, 220 Handan Rd, Shanghai 200433, China; (Y.X.); (X.Z.); (Y.-W.S.)
- Yiwu Research Institute of Fudan University, Chengbei Road, Yiwu City 322000, China
- Key Laboratory for Information Science of Electromagnetic Waves (MoE), Fudan University, 220 Handan Rd, Shanghai 200433, China
| | - Yi-Wei Shi
- School of Information Science and Engineering, Fudan University, 220 Handan Rd, Shanghai 200433, China; (Y.X.); (X.Z.); (Y.-W.S.)
- Key Laboratory for Information Science of Electromagnetic Waves (MoE), Fudan University, 220 Handan Rd, Shanghai 200433, China
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5
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Lawson T, Gentleman AS, Lage A, Casadevall C, Xiao J, Petit T, Frosz MH, Reisner E, Euser TG. Low-Volume Reaction Monitoring of Carbon Dot Light Absorbers in Optofluidic Microreactors. ACS Catal 2023; 13:9090-9101. [PMID: 37441232 PMCID: PMC10334427 DOI: 10.1021/acscatal.3c02212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 06/07/2023] [Indexed: 07/15/2023]
Abstract
Optical monitoring and screening of photocatalytic batch reactions using cuvettes ex situ is time-consuming, requires substantial amounts of samples, and does not allow the analysis of species with low extinction coefficients. Hollow-core photonic crystal fibers (HC-PCFs) provide an innovative approach for in situ reaction detection using ultraviolet-visible absorption spectroscopy, with the potential for high-throughput automation using extremely low sample volumes with high sensitivity for monitoring of the analyte. HC-PCFs use interference effects to guide light at the center of a microfluidic channel and use this to enhance detection sensitivity. They open the possibility of comprehensively studying photocatalysts to extract structure-activity relationships, which is unfeasible with similar reaction volume, time, and sensitivity in cuvettes. Here, we demonstrate the use of HC-PCF microreactors for the screening of the electron transfer properties of carbon dots (CDs), a nanometer-sized material that is emerging as a homogeneous light absorber in photocatalysis. The CD-driven photoreduction reaction of viologens (XV2+) to the corresponding radical monocation XV•+ is monitored in situ as a model reaction, using a sample volume of 1 μL per measurement and with a detectability of <1 μM. A range of different reaction conditions have been systematically studied, including different types of CDs (i.e., amorphous, graphitic, and graphitic nitrogen-doped CDs), surface chemistry, viologens, and electron donors. Furthermore, the excitation irradiance was varied to study its effect on the photoreduction rate. The findings are correlated with the electron transfer properties of CDs based on their electronic structure characterized by soft X-ray absorption spectroscopy. Optofluidic microreactors with real-time optical detection provide unique insight into the reaction dynamics of photocatalytic systems and could form the basis of future automated catalyst screening platforms, where samples are only available on small scales or at a high cost.
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Affiliation(s)
- Takashi Lawson
- NanoPhotonics
Centre, Cavendish Laboratory, University
of Cambridge, JJ Thomson Avenue, Cambridge CB3 0HE, U.K.
- Yusuf
Hamied Department of Chemistry, University
of Cambridge, Lensfield
Road, Cambridge CB2 1EW, U.K.
| | - Alexander S. Gentleman
- NanoPhotonics
Centre, Cavendish Laboratory, University
of Cambridge, JJ Thomson Avenue, Cambridge CB3 0HE, U.K.
- Yusuf
Hamied Department of Chemistry, University
of Cambridge, Lensfield
Road, Cambridge CB2 1EW, U.K.
| | - Ava Lage
- Yusuf
Hamied Department of Chemistry, University
of Cambridge, Lensfield
Road, Cambridge CB2 1EW, U.K.
| | - Carla Casadevall
- Yusuf
Hamied Department of Chemistry, University
of Cambridge, Lensfield
Road, Cambridge CB2 1EW, U.K.
| | - Jie Xiao
- Helmholtz-Zentrum
Berlin für Materialien und Energy GmbH, Albert-Einstein-Straße 15, 12489 Berlin, Germany
| | - Tristan Petit
- Helmholtz-Zentrum
Berlin für Materialien und Energy GmbH, Albert-Einstein-Straße 15, 12489 Berlin, Germany
| | - Michael H. Frosz
- Max
Planck Institute for the Science of Light, Staudtstr. 2, 91058 Erlangen, Germany
| | - Erwin Reisner
- Yusuf
Hamied Department of Chemistry, University
of Cambridge, Lensfield
Road, Cambridge CB2 1EW, U.K.
| | - Tijmen G. Euser
- NanoPhotonics
Centre, Cavendish Laboratory, University
of Cambridge, JJ Thomson Avenue, Cambridge CB3 0HE, U.K.
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6
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Echeverri A, Gallegos M, Gómez T, Pendás ÁM, Cárdenas C. Calculation of the ELF in the excited state with single-determinant methods. J Chem Phys 2023; 158:2887544. [PMID: 37125705 DOI: 10.1063/5.0142918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Accepted: 04/17/2023] [Indexed: 05/02/2023] Open
Abstract
Since its first definition, back in 1990, the electron localization function (ELF) has settled as one of the most commonly employed techniques to characterize the nature of the chemical bond in real space. Although most of the work using the ELF has focused on the study of ground-state chemical reactivity, a growing interest has blossomed to apply these techniques to the nearly unexplored realm of excited states and photochemistry. Since accurate excited electronic states usually require to account appropriately for electron correlation, the standard single-determinant ELF formulation cannot be blindly applied to them, and it is necessary to turn to correlated ELF descriptions based on the two-particle density matrix (2-PDM). The latter requires costly wavefunction approaches, unaffordable for most of the systems of current photochemical interest. Here, we compare the exact, 2-PDM-based ELF results with those of approximate 2-PDM reconstructions taken from reduced density matrix functional theory. Our approach is put to the test in a wide variety of representative scenarios, such as those provided by the lowest-lying excited electronic states of simple diatomic and polyatomic molecules. Altogether, our results suggest that even approximate 2-PDMs are able to accurately reproduce, on a general basis, the topological and statistical features of the ELF scalar field, paving the way toward the application of cost-effective methodologies, such as time-dependent-Hartree-Fock or time-dependent density functional theory, in the accurate description of the chemical bonding in excited states of photochemical relevance.
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Affiliation(s)
- Andrea Echeverri
- Departamento de Física, Facultad de Ciencias, Universidad de Chile, Casilla 653, Santiago, Chile
| | - Miguel Gallegos
- Depto. Química Física y Analítica, Universidad de Oviedo, 33006 Oviedo, Spain
| | - Tatiana Gómez
- Theoretical and Computational Chemistry Center, Institute of Applied Chemical Sciences, Faculty of Engineering, Universidad Autonoma de Chile, El Llano Subercaceaux, 2801 Santiago, Chile
| | - Ángel Martín Pendás
- Depto. Química Física y Analítica, Universidad de Oviedo, 33006 Oviedo, Spain
| | - Carlos Cárdenas
- Departamento de Física, Facultad de Ciencias, Universidad de Chile, Casilla 653, Santiago, Chile
- Centro para el Desarrollo de la Nanociencia y la Nanotecnología (CEDENNA), Avda. Ecuador 3493, Santiago 9170124, Chile
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7
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Groeneveld I, Jaspars A, Akca IB, Somsen GW, Ariese F, van Bommel MR. Use of liquid-core waveguides as photochemical reactors and/or for chemical analysis – An overview. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY 2023. [DOI: 10.1016/j.jpap.2023.100168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
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8
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Lawson T, Gentleman AS, Pinnell J, Eisenschmidt A, Antón‐García D, Frosz MH, Reisner E, Euser TG. In situ Detection of Cobaloxime Intermediates During Photocatalysis Using Hollow-Core Photonic Crystal Fiber Microreactors. Angew Chem Int Ed Engl 2023; 62:e202214788. [PMID: 36478637 PMCID: PMC10946874 DOI: 10.1002/anie.202214788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 11/28/2022] [Accepted: 12/06/2022] [Indexed: 12/12/2022]
Abstract
Hollow-core photonic crystal fibers (HC-PCFs) provide a novel approach for in situ UV/Vis spectroscopy with enhanced detection sensitivity. Here, we demonstrate that longer optical path lengths than afforded by conventional cuvette-based UV/Vis spectroscopy can be used to detect and identify the CoI and CoII states in hydrogen-evolving cobaloxime catalysts, with spectral identification aided by comparison with DFT-simulated spectra. Our findings show that there are two types of signals observed for these molecular catalysts; a transient signal and a steady-state signal, with the former being assigned to the CoI state and the latter being assigned to the CoII state. These observations lend support to a unimolecular pathway, rather than a bimolecular pathway, for hydrogen evolution. This study highlights the utility of fiber-based microreactors for understanding these and a much wider range of homogeneous photocatalytic systems in the future.
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Affiliation(s)
- Takashi Lawson
- NanoPhotonics CentreCavendish LaboratoryUniversity of CambridgeJJ Thomson AvenueCambridgeCB3 0HEUK
- Yusuf Hamied Department of ChemistryUniversity of CambridgeLensfield RoadCambridgeCB2 1EWUK
| | - Alexander S. Gentleman
- NanoPhotonics CentreCavendish LaboratoryUniversity of CambridgeJJ Thomson AvenueCambridgeCB3 0HEUK
- Yusuf Hamied Department of ChemistryUniversity of CambridgeLensfield RoadCambridgeCB2 1EWUK
| | - Jonathan Pinnell
- NanoPhotonics CentreCavendish LaboratoryUniversity of CambridgeJJ Thomson AvenueCambridgeCB3 0HEUK
| | - Annika Eisenschmidt
- Yusuf Hamied Department of ChemistryUniversity of CambridgeLensfield RoadCambridgeCB2 1EWUK
| | - Daniel Antón‐García
- Yusuf Hamied Department of ChemistryUniversity of CambridgeLensfield RoadCambridgeCB2 1EWUK
| | - Michael H. Frosz
- Max Planck Institute for the Science of LightStaudtstr. 291058ErlangenGermany
| | - Erwin Reisner
- Yusuf Hamied Department of ChemistryUniversity of CambridgeLensfield RoadCambridgeCB2 1EWUK
| | - Tijmen G. Euser
- NanoPhotonics CentreCavendish LaboratoryUniversity of CambridgeJJ Thomson AvenueCambridgeCB3 0HEUK
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9
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Schorn F, Essert A, Zhong Y, Abdullayev S, Castiglione K, Haumann M, Joly NY. Measurement of Minute Liquid Volumes of Chiral Molecules Using In-Fiber Polarimetry. Anal Chem 2023; 95:3204-3209. [PMID: 36720470 PMCID: PMC9933876 DOI: 10.1021/acs.analchem.2c03347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Accepted: 11/11/2022] [Indexed: 02/02/2023]
Abstract
We report an optofluidic method that enables to efficiently measure the enantiomeric excess of chiral molecules at low concentrations. The approach is to monitor the optical activity induced by a Kagome-lattice hollow-core photonic crystal fiber filled with a sub-μL volume of chiral compounds. The technique also allows monitoring the enzymatic racemization of R-mandelic acid.
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Affiliation(s)
- Florian Schorn
- Interdisciplinary
Center for Nanostructured Films, Max-Planck-Institute
for the Science of Light, and Friedrich-Alexander-University Erlangen-Nürmberg, Erlangen91058, Germany
| | - Arabella Essert
- Lehrstuhl
für Bioverfahrenstechnik (BVT), Friedrich-Alexander-Universität
Erlangen-Nürnberg (FAU), Erlangen91052, Germany
| | - Yu Zhong
- Lehrstuhl
für Chemische Reaktionstechnik (CRT), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen91058, Germany
| | - Sahib Abdullayev
- Lehrstuhl
für Chemische Reaktionstechnik (CRT), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen91058, Germany
| | - Kathrin Castiglione
- Lehrstuhl
für Bioverfahrenstechnik (BVT), Friedrich-Alexander-Universität
Erlangen-Nürnberg (FAU), Erlangen91052, Germany
| | - Marco Haumann
- Lehrstuhl
für Chemische Reaktionstechnik (CRT), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen91058, Germany
- Research
Centre for Synthesis and Catalysis, Department of Chemistry, University of Johannesburg, P.O. Box 524, Auckland Park2006, South Africa
| | - Nicolas Y. Joly
- Interdisciplinary
Center for Nanostructured Films, Max-Planck-Institute
for the Science of Light, and Friedrich-Alexander-University Erlangen-Nürmberg, Erlangen91058, Germany
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10
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Kim J, Bürger J, Jang B, Zeisberger M, Gargiulo J, Menezes LDS, Maier SA, Schmidt MA. 3D-nanoprinted on-chip antiresonant waveguide with hollow core and microgaps for integrated optofluidic spectroscopy. OPTICS EXPRESS 2023; 31:2833-2845. [PMID: 36785288 DOI: 10.1364/oe.475794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Accepted: 12/01/2022] [Indexed: 06/18/2023]
Abstract
Here, we unlock the properties of the recently introduced on-chip hollow-core microgap waveguide in the context of optofluidics which allows for intense light-water interaction over long lengths with fast response times. The nanoprinted waveguide operates by the anti-resonance effect in the visible and near-infrared domain and includes a hollow core with defined gaps every 176 µm. The spectroscopic capabilities are demonstrated by various absorption-related experiments, showing that the Beer-Lambert law can be applied without any modification. In addition to revealing key performance parameters, time-resolved experiments showed a decisive improvement in diffusion times resulting from the lateral access provided by the microgaps. Overall, the microgap waveguide represents a pathway for on-chip spectroscopy in aqueous environments.
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11
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Alam MK, Vadivel K, Natesan A, Sghaireen MG, Ganji KK, Srivastava KC, Nashwan S, Khader Y. Design of highly sensitive biosensors using hollow-core microstructured fibers for plasma sensing in aids with human metabolism. OPTICAL AND QUANTUM ELECTRONICS 2023; 55:188. [PMID: 36618531 PMCID: PMC9811872 DOI: 10.1007/s11082-022-04514-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Accepted: 12/20/2022] [Indexed: 06/17/2023]
Abstract
Detection of low index liquid analytes in real-time, in-situ, and with high accuracy is of great importance in various scientific fields, particularly in medicine and biology. Accurate detection of plasma concentration in blood samples is one of the most significant usages of biosensors in medicine. In this paper, we report a highly sensitive biosensor using hollow core microstructure optical fibers (HC-MOFs) to detect low index liquid analytes with a particular focus on detection of plasma concentration in blood samples. We demonstrate how variations in plasma concentration in blood can change transmission spectra of the HC-MOF due to the photonic bandgap mechanism. We use the finite element approach to explore how the biosensor's performance depends on the number of capillary rings encircling the hollow core of the fibre. An average spectral and amplitude sensitivity of 8928.57 nm/RIU and 1.21 dB/RIU is reported for the optimized design of HC-MOF for five capillary rings with a refractive index detection range of 1.333 to 1.3385 for different ratios of plasma in blood serum. The proposed biosensor can have potential application in liquid analyte detection in medicine, chemistry, and biology where real-time and accurate data about liquid analytes are necessary for human metabolism.
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Affiliation(s)
- Mohammad Khursheed Alam
- Orthodontic Division, Preventive Dentistry Department, College of Dentistry, Jouf University, 72345 Sakakah, Saudi Arabia
| | - Kamalakannan Vadivel
- Department of Physiology, Employees’ State Insurance Corporation Medical College, PGIMSR and Hospital, Kalaburagi, Karnataka 585106 India
| | - Ayyanr Natesan
- Department of ECE, Thiagarajar College of Engineering, Madurai, Tamilnadu India
| | - Mohammed Ghazi Sghaireen
- Prosthodontics, Prosthetic Dental Sciences, College of Dentistry, Jouf University, 72345 Sakakah, Saudi Arabia
| | - Kiran Kumar Ganji
- Department of Preventive Dentistry, College of Dentsitry, Jouf University, 72345 Sakaka, Saudi Arabia
| | - Kumar Chandan Srivastava
- Department of Oral and Maxillofacial Surgery and Diagnostic Sciences, College of Dentistry, Jouf University, 72345 Sakaka, Saudi Arabia
| | - Shadi Nashwan
- Department of Computer Science, College of Computer and Information Sciences, Jouf University, Sakaka, Saudi Arabia
| | - Yousef Khader
- Department of Community Medicine, Public Health and Family Medicine, Faculty of Medicine Epidemiology, Medical Education and Biostatistics, Jordan University of Science and Technology, Irbid, Jordan
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12
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Kim J, Förster R, Wieduwilt T, Jang B, Bürger J, Gargiulo J, de S Menezes L, Rossner C, Fery A, Maier SA, Schmidt MA. Locally Structured On-Chip Optofluidic Hollow-Core Light Cages for Single Nanoparticle Tracking. ACS Sens 2022; 7:2951-2959. [PMID: 36260351 DOI: 10.1021/acssensors.2c00988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Nanoparticle tracking analysis (NTA) is a widely used methodology to investigate nanoscale systems at the single species level. Here, we introduce the locally structured on-chip optofluidic hollow-core light cage, as a novel platform for waveguide-assisted NTA. This hollow waveguide guides light by the antiresonant effect in a sparse array of dielectric strands and includes a local modification to realize aberration-free tracking of individual nano-objects, defining a novel on-chip solution with properties specifically tailored for NTA. The key features of our system are (i) well-controlled nano-object illumination through the waveguide mode, (ii) diffraction-limited and aberration-free imaging at the observation site, and (iii) a high level of integration, achieved by on-chip interfacing to fibers. The present study covers all aspects relevant for NTA including design, simulation, implementation via 3D nanoprinting, and optical characterization. The capabilities of the approach to precisely characterize practically relevant nanosystems have been demonstrated by measuring the solvency-induced collapse of a nanoparticle system which includes polymer brush-based shells that react to changes in the liquid environment. Our study unlocks the advantages of the light cage approach in the context of NTA, suggesting its application in various areas such as bioanalytics, life science, environmental science, or nanoscale material science in general.
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Affiliation(s)
- Jisoo Kim
- Leibniz Institute of Photonic Technology, Albert-Einstein-Str. 9, 07745Jena, Germany.,Abbe Center of Photonics and Faculty of Physics, Friedrich-Schiller-University Jena, Max-Wien-Platz 1, 07743Jena, Germany
| | - Ronny Förster
- Leibniz Institute of Photonic Technology, Albert-Einstein-Str. 9, 07745Jena, Germany
| | - Torsten Wieduwilt
- Leibniz Institute of Photonic Technology, Albert-Einstein-Str. 9, 07745Jena, Germany
| | - Bumjoon Jang
- Leibniz Institute of Photonic Technology, Albert-Einstein-Str. 9, 07745Jena, Germany.,Abbe Center of Photonics and Faculty of Physics, Friedrich-Schiller-University Jena, Max-Wien-Platz 1, 07743Jena, Germany
| | - Johannes Bürger
- Chair in Hybrid Nanosystems, Nano Institute Munich, Ludwig-Maximilians-Universität Munich, 80799Munich, Germany
| | - Julian Gargiulo
- Chair in Hybrid Nanosystems, Nano Institute Munich, Ludwig-Maximilians-Universität Munich, 80799Munich, Germany
| | - Leonardo de S Menezes
- Chair in Hybrid Nanosystems, Nano Institute Munich, Ludwig-Maximilians-Universität Munich, 80799Munich, Germany.,Departamento de Física, Universidade Federal de Pernambuco, 50670-901Recife-PE, Brazil
| | - Christian Rossner
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Str. 6, 01069Dresden, Germany
| | - Andreas Fery
- Leibniz-Institut für Polymerforschung Dresden e.V., Hohe Str. 6, 01069Dresden, Germany
| | - Stefan A Maier
- Chair in Hybrid Nanosystems, Nano Institute Munich, Ludwig-Maximilians-Universität Munich, 80799Munich, Germany.,The Blackett Laboratory, Department of Physics, Imperial College London, LondonSW7 2AZ, United Kingdom.,School of Physics and Astronomy, Monash University, Clayton, Victoria3800, Australia
| | - Markus A Schmidt
- Leibniz Institute of Photonic Technology, Albert-Einstein-Str. 9, 07745Jena, Germany.,Abbe Center of Photonics and Faculty of Physics, Friedrich-Schiller-University Jena, Max-Wien-Platz 1, 07743Jena, Germany.,Otto Schott Institute of Materials Research (OSIM), Friedrich Schiller University Jena, Fraunhoferstr. 6, 07743Jena, Germany
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13
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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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14
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Spiske F, Dirauf MP, Braeuer AS. Aerogel-Lined Capillaries for Raman Signal Gain of Aqueous Mixtures. SENSORS 2022; 22:s22124388. [PMID: 35746173 PMCID: PMC9228469 DOI: 10.3390/s22124388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 06/03/2022] [Accepted: 06/07/2022] [Indexed: 02/05/2023]
Abstract
We report an experimental study on the gain of the Raman signal of aqueous mixtures and liquid water when confined in aerogel-lined capillaries of various lengths of up to 20 cm and various internal diameters between 530 and 1000 µm. The lining was made of hydrophobised silica aerogel, and the carrier capillary body consisted of fused silica or borosilicate glass. Compared to the Raman signal detected from bulk liquid water with the same Raman probe, a Raman signal 27 times as large was detected when the liquid water was confined in a 20 cm-long capillary with an internal diameter of 700 µm. In comparison with silver-lined capillaries of the same length and same internal diameter, the aerogel-lined capillaries featured a superior Raman signal gain and a longer gain stability when exposed to mixtures of water, sugar, ethanol and acetic acid.
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15
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Yan R, Cui E, Zhao S, Zhou F, Wang D, Lei C. Real-time and high-sensitivity refractive index sensing with an arched optofluidic waveguide. OPTICS EXPRESS 2022; 30:16031-16043. [PMID: 36221456 DOI: 10.1364/oe.458280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2022] [Accepted: 04/11/2022] [Indexed: 06/16/2023]
Abstract
Refractive index (RI) sensing plays an important role in analytical chemistry, medical diagnosis, and environmental monitoring. The optofluidic technique is considered to be an ideal tool for RI sensor configuration for its high integration, high sensitivity, and low cost. However, it remains challenging to achieve RI measurement in real time with high sensitivity and low detection limit (DL) simultaneously. In this work, we design and fabricate a RI sensor with an arched optofluidic waveguide by monitoring the power loss of the light passing through the waveguide, which is sandwiched by the air-cladding and the liquid-cladding under test, we achieve RI detection of the sample in real time and with high sensitivity. Furthermore, both numerical simulation and experimental investigation show that our RI sensor can be designed with different geometric parameters to cover multiple RI ranges with high sensitivities for different applications. Experimental results illustrate that our sensor is capable to achieve a superior sensitivity better than -19.2 mW/RIU and a detection limit of 5.21×10-8 RIU in a wide linear dynamic range from 1.333 to 1.392, providing a promising solution for real-time and high-sensitivity RI sensing.
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16
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Miele E, Dose WM, Manyakin I, Frosz MH, Ruff Z, De Volder MFL, Grey CP, Baumberg JJ, Euser TG. Hollow-core optical fibre sensors for operando Raman spectroscopy investigation of Li-ion battery liquid electrolytes. Nat Commun 2022; 13:1651. [PMID: 35347137 PMCID: PMC8960792 DOI: 10.1038/s41467-022-29330-4] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Accepted: 03/04/2022] [Indexed: 11/09/2022] Open
Abstract
Improved analytical tools are urgently required to identify degradation and failure mechanisms in Li-ion batteries. However, understanding and ultimately avoiding these detrimental mechanisms requires continuous tracking of complex electrochemical processes in different battery components. Here, we report an operando spectroscopy method that enables monitoring the chemistry of a carbonate-based liquid electrolyte during electrochemical cycling in Li-ion batteries with a graphite anode and a LiNi0.8Mn0.1Co0.1O2 cathode. By embedding a hollow-core optical fibre probe inside a lab-scale pouch cell, we demonstrate the effective evolution of the liquid electrolyte species by background-free Raman spectroscopy. The analysis of the spectroscopy measurements reveals changes in the ratio of carbonate solvents and electrolyte additives as a function of the cell voltage and show the potential to track the lithium-ion solvation dynamics. The proposed operando methodology contributes to understanding better the current Li-ion battery limitations and paves the way for studies of the degradation mechanisms in different electrochemical energy storage systems.
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Affiliation(s)
- Ermanno Miele
- Nanophotonics Centre, Department of Physics, Cavendish Laboratory, University of Cambridge, CB3 0HE, Cambridge, United Kingdom.,Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, UK.,The Faraday Institution, Quad One, Harwell Science and Innovation Campus, Didcot, OX11 0RA, Oxford, UK
| | - Wesley M Dose
- Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, UK.,The Faraday Institution, Quad One, Harwell Science and Innovation Campus, Didcot, OX11 0RA, Oxford, UK.,Institute for Manufacturing, Department of Engineering, University of Cambridge, 17 Charles Babbage Road, CB3 0FS, Cambridge, UK
| | - Ilya Manyakin
- Nanophotonics Centre, Department of Physics, Cavendish Laboratory, University of Cambridge, CB3 0HE, Cambridge, United Kingdom
| | - Michael H Frosz
- Max Planck Institute for the Science of Light, Staudtstr. 2, 91058, Erlangen, Germany
| | - Zachary Ruff
- Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, UK.,The Faraday Institution, Quad One, Harwell Science and Innovation Campus, Didcot, OX11 0RA, Oxford, UK
| | - Michael F L De Volder
- The Faraday Institution, Quad One, Harwell Science and Innovation Campus, Didcot, OX11 0RA, Oxford, UK.,Institute for Manufacturing, Department of Engineering, University of Cambridge, 17 Charles Babbage Road, CB3 0FS, Cambridge, UK
| | - Clare P Grey
- Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, UK. .,The Faraday Institution, Quad One, Harwell Science and Innovation Campus, Didcot, OX11 0RA, Oxford, UK.
| | - Jeremy J Baumberg
- Nanophotonics Centre, Department of Physics, Cavendish Laboratory, University of Cambridge, CB3 0HE, Cambridge, United Kingdom. .,The Faraday Institution, Quad One, Harwell Science and Innovation Campus, Didcot, OX11 0RA, Oxford, UK.
| | - Tijmen G Euser
- Nanophotonics Centre, Department of Physics, Cavendish Laboratory, University of Cambridge, CB3 0HE, Cambridge, United Kingdom. .,The Faraday Institution, Quad One, Harwell Science and Innovation Campus, Didcot, OX11 0RA, Oxford, UK.
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17
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Zhang X, Zhang X, Zhang Y, Peng W. In-fibre micro-channel: its potential for in-fibre detection. Analyst 2022; 147:828-833. [PMID: 35103720 DOI: 10.1039/d1an01996a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Micro-channels (μ-channels) in microstructure fibres can be regarded as natural in-fibre flow channels. Thus, the advent of microstructure fibres with μ-channels makes it possible to realize in-fibre integrated microfluidic devices, and microstructure fibres with μ-channels provide the possibility of creating new online monitoring systems and define new concepts. Herein, we developed a novel compact in-fibre detection platform, which is combined with a μ-channel in a new-type microstructure fibre, side-hole fibre, for in-fibre detection. The optical component of this proposed in-fibre detection platform is made of a simple cross-axial open-cavity Fabry-Perot interferometer. This miniaturized cross-axial open-cavity Fabry-Perot interferometer is formed by a 45°-angled side-hole fibre, which is fabricated by a simple end-face polishing process. For a 45°-angled fibre, the incident optical axis can be steered based on total internal reflection at the oblique fibre-air interface, and the reflected light will enter the side-hole μ-channel, and the front and rear inner μ-channel walls form the cavity; the natural in-fibre μ-channel functions as a (liquid/gas) flow channel. Experimentally, this proposed in-fibre detection platform was fabricated, and its spectral characteristics were investigated. Its relative humidity characteristics and potential application in breath sensing were calibrated by measuring the evolution of the reflection spectrum. As a whole, the proposed detection platform demonstrates the advantages of simple structure, easy fabrication without additional sensitive materials, and potential application in breath sensing or lab-in-fibre technology.
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Affiliation(s)
- Xinpu Zhang
- School of Physics, Dalian University of Technology, Dalian 116024, China.
| | - Xuhui Zhang
- School of Physics, Dalian University of Technology, Dalian 116024, China.
| | - Yang Zhang
- School of Physics, Dalian University of Technology, Dalian 116024, China.
| | - Wei Peng
- School of Physics, Dalian University of Technology, Dalian 116024, China.
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18
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Performance analysis of alcohols sensing with optical sensor procedure using circular photonic crystal fiber (C-PCF) in the terahertz regime. SENSING AND BIO-SENSING RESEARCH 2022. [DOI: 10.1016/j.sbsr.2021.100469] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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19
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Modelling and numerical analysis of a fabrication-friendly PCF-based biosensor: Milk sensing. SENSING AND BIO-SENSING RESEARCH 2022. [DOI: 10.1016/j.sbsr.2021.100471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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20
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Gentleman AS, Lawson T, Ellis MG, Davis M, Turner-Dore J, Ryder ASH, Frosz MH, Ciaccia M, Reisner E, Cresswell AJ, Euser TG. Stern–Volmer analysis of photocatalyst fluorescence quenching within hollow-core photonic crystal fibre microreactors. Chem Commun (Camb) 2022; 58:10548-10551. [DOI: 10.1039/d2cc03996f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Optofluidic microreactors enable Stern–Volmer analysis on nanolitre-scale photocatalyst–quencher mixtures. The method is used to measure bimolecular quenching coefficients for a photoredox-catalysed α-C–H alkylation reaction of primary alkylamines.
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Affiliation(s)
- Alexander S. Gentleman
- Nanophotonics Centre, The Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge, CB3 0HE, UK
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
| | - Takashi Lawson
- Nanophotonics Centre, The Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge, CB3 0HE, UK
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
| | - Matthew G. Ellis
- Nanophotonics Centre, The Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge, CB3 0HE, UK
| | - Molly Davis
- Nanophotonics Centre, The Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge, CB3 0HE, UK
| | - Jacob Turner-Dore
- Department of Chemistry, University of Bath, 1 South, Claverton Down, Bath, BA2 7AY, UK
| | - Alison S. H. Ryder
- Department of Chemistry, University of Bath, 1 South, Claverton Down, Bath, BA2 7AY, UK
| | - Michael H. Frosz
- Max Planck Institute for the Science of Light, Staudtstr. 2, 91058, Erlangen, Germany
| | - Maria Ciaccia
- Syngenta, Jealott's Hill Research Centre, Bracknell, Berkshire, RG52 6EY, UK
| | - Erwin Reisner
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
| | | | - Tijmen G. Euser
- Nanophotonics Centre, The Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge, CB3 0HE, UK
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21
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22
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Berganza A, Arrospide E, Amorebieta J, Zubia J, Durana G. Fabrication Quality Assessment Based on the Coupling of a Dual-Core Microstructured Polymer Optical Fiber. SENSORS 2021; 21:s21227435. [PMID: 34833513 PMCID: PMC8624514 DOI: 10.3390/s21227435] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 11/01/2021] [Accepted: 11/05/2021] [Indexed: 11/16/2022]
Abstract
In this paper we report on the theoretical analysis and fabrication of a dual-core microstructured polymer optical fiber (mPOF) and demonstrate how the coupling characteristics of a dual-core mPOF may be a key factor to assess the quality of the fabrication process. The coupling characteristics of this fiber have been tested and, for comparison purposes, simulations regarding the effects of inaccuracies during the manufacturing process were carried out to evaluate the fabrication quality. Results indicate that theoretical, simulation and experimental data are in good agreement, which highlights the uniformity of the microstructure along the fiber and the quality of its fabrication process. In fact, the manufactured mPOF reached a coupling efficiency up to 95.26%, which makes this mPOF appealing for applications in which highly efficient power couplers are required.
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Affiliation(s)
- Amaia Berganza
- Department of Applied Mathematics, University of the Basque Country, 48013 Bilbao, Spain; (E.A.); (J.A.)
- Correspondence:
| | - Eneko Arrospide
- Department of Applied Mathematics, University of the Basque Country, 48013 Bilbao, Spain; (E.A.); (J.A.)
| | - Josu Amorebieta
- Department of Applied Mathematics, University of the Basque Country, 48013 Bilbao, Spain; (E.A.); (J.A.)
| | - Joseba Zubia
- Department of Communications Engineering, University of the Basque Country, 48013 Bilbao, Spain; (J.Z.); (G.D.)
| | - Gaizka Durana
- Department of Communications Engineering, University of the Basque Country, 48013 Bilbao, Spain; (J.Z.); (G.D.)
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23
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Yu R, Wang C, Jiang W, Shen Z, Yan Z, Hao Y, Shi Y, Yu F, Hua P, Schötz G, Liu AQ, Xiao L. High-efficient subwavelength-scale optofluidic waveguides with tapered microstructured optical fibers. OPTICS EXPRESS 2021; 29:38068-38081. [PMID: 34808866 DOI: 10.1364/oe.443846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Accepted: 10/22/2021] [Indexed: 06/13/2023]
Abstract
Microstructured optical fibers (MOFs) have attracted intensive research interest in fiber-based optofluidics owing to their ability to have high-efficient light-microfluid interactions over a long distance. However, there lacks an exquisite design guidance for the utilization of MOFs in subwavelength-scale optofluidics. Here we propose a tapered hollow-core MOF structure with both light and fluid confined inside the central hole and investigate its optofluidic guiding properties by varying the diameter using the full vector finite element method. The basic optical modal properties, the effective sensitivity, and the nonlinearity characteristics are studied. Our miniature optofluidic waveguide achieves a maximum fraction of power inside the core at 99.7%, an ultra-small effective mode area of 0.38 µm2, an ultra-low confinement loss, and a controllable group velocity dispersion. It can serve as a promising platform in the subwavelength-scale optical devices for optical sensing and nonlinear optics.
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24
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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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25
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Ermatov T, Novoselova M, Skibina J, Machnev A, Gorin D, Noskov RE. Ultrasmooth, biocompatible, and removable nanocoating for hollow-core microstructured optical fibers. OPTICS LETTERS 2021; 46:4828-4831. [PMID: 34598210 DOI: 10.1364/ol.436220] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Accepted: 08/19/2021] [Indexed: 06/13/2023]
Abstract
Functional nanocoatings of hollow-core microstructured optical fibers (HC-MOFs) have extended the domain of their applications to biosensing and photochemistry. However, novel modalities typically come with increased optical losses since a significant surface roughness of functional layers gives rise to additional light scattering, restricting the performance of functionalization. Here, the technique that enables a biocompatible and removable nanocoating of HC-MOFs with low surface roughness is presented. The initial functional film is formed by a layer-by-layer assembly of bovine serum albumin (BSA) and tannic acid (TA). The alkaline etching at pH 9 results in the reduction of surface roughness from 26 nm to 3 nm and decreases fiber optical losses by three times. The nanocoating can be fully removed within 7 min of the treatment. Natural biocompatibility of BSA alongside antibacterial and antifouling properties of TA makes the presented nanocoating promising for biophotonic applications.
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26
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Shi CY, Zhang Q, Wang BS, Chen M, Qu DH. Intrinsically Photopolymerizable Dynamic Polymers Derived from a Natural Small Molecule. ACS APPLIED MATERIALS & INTERFACES 2021; 13:44860-44867. [PMID: 34499480 DOI: 10.1021/acsami.1c11679] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Developing photopolymerizable polymeric materials offers many opportunities to process materials in a remote and controllable manner. However, most photopolymerizable technologies require the external introduction of photoabsorbing units, whereas designing intrinsically photopolymerizable polymers is still highly challenging. Here, we report that a natural small-molecule disulfide, thioctic acid, can be directly transformed into a poly(disulfides) network under the irradiation of visible light without any external additives. The resulting polymer network exhibits optical transparency, mechanical stretchability and toughness, ambient self-healing ability, and especially strong adhesive ability to different surfaces. The dynamic covalent backbones of the poly(disulfides) endow the depolymerization ability to recycle the material in a closed-loop manner. We foresee that this facile and robust photopolymerization system is of great promise toward low-cost and high-performance photocuring coatings and adhesives.
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Affiliation(s)
- Chen-Yu Shi
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology 130 Meilong Road, Shanghai 200237, China
| | - Qi Zhang
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology 130 Meilong Road, Shanghai 200237, China
| | - Bang-Sen Wang
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology 130 Meilong Road, Shanghai 200237, China
| | - Meng Chen
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology 130 Meilong Road, Shanghai 200237, China
| | - Da-Hui Qu
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology 130 Meilong Road, Shanghai 200237, China
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27
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Johny J, Amos S, Prabhu R. Optical Fibre-Based Sensors for Oil and Gas Applications. SENSORS (BASEL, SWITZERLAND) 2021; 21:6047. [PMID: 34577252 PMCID: PMC8473273 DOI: 10.3390/s21186047] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 08/06/2021] [Accepted: 08/25/2021] [Indexed: 11/23/2022]
Abstract
Oil and gas (O&G) explorations moving into deeper zones for enhanced oil and gas recovery are causing serious safety concerns across the world. The sensing of critical multiple parameters like high pressure, high temperature (HPHT), chemicals, etc., are required at longer distances in real-time. Traditional electrical sensors operate less effectively under these extreme environmental conditions and are susceptible to electromagnetic interference (EMI). Hence, there is a growing demand for improved sensors with enhanced measurement capabilities and also sensors that generates reliable data for enhanced oil and gas production. In addition to enhanced oil and gas recovery, the sensing technology should also be capable of monitoring the well bore integrity and safety. The sensing requirements of the O&G industry for improved sensing in deeper zones include increased transmission length, improved spatial coverage and integration of multiple sensors with multimodal sensing capability. This imposes problems like signal attenuation, crosstalks and cross sensitivities. Optical fibre-based sensors are expected to provide superior sensing capabilities compared to electrical sensors. This review paper covers a detailed review of different fibre-optic sensing technologies to identify a feasible sensing solution for the O&G industry.
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Affiliation(s)
- Jincy Johny
- School of Engineering, Robert Gordon University, Aberdeen AB10 7GJ, UK;
| | - Solomon Amos
- Department of Computer Science, Deramore Lane, University of York, Heslington, York YO10 5GH, UK;
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Schorn F, Aubermann M, Zeltner R, Haumann M, Joly NY. Online Monitoring of Microscale Liquid-Phase Catalysis Using in-Fiber Raman Spectroscopy. ACS Catal 2021. [DOI: 10.1021/acscatal.1c01264] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Florian Schorn
- Max-Planck Institute for the Science of Light, Erlangen 91058, Germany
- Interdisciplinary Center for Nanostructured Films, Erlangen 91058, Germany
| | | | - Richard Zeltner
- Max-Planck Institute for the Science of Light, Erlangen 91058, Germany
| | - Marco Haumann
- Lehrstuhl für Chemische Reaktionstechnik (CRT), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen 91058, Germany
| | - Nicolas Y. Joly
- Max-Planck Institute for the Science of Light, Erlangen 91058, Germany
- Interdisciplinary Center for Nanostructured Films, Erlangen 91058, Germany
- Department of Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen 91058, Germany
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29
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Kitadai H, Yuan M, Ma Y, Ling X. Graphene-Based Environmental Sensors: Electrical and Optical Devices. Molecules 2021; 26:molecules26082165. [PMID: 33918751 PMCID: PMC8070241 DOI: 10.3390/molecules26082165] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 03/29/2021] [Accepted: 04/08/2021] [Indexed: 11/16/2022] Open
Abstract
In this review paper, we summarized the recent progress of using graphene as a sensing platform for environmental applications. Especially, we highlight the electrical and optical sensing devices developed based on graphene and its derivatives. We discussed the role of graphene in these devices, the sensing mechanisms, and the advantages and disadvantages of specific devices. The approaches to improve the sensitivity and selectivity are also discussed.
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Affiliation(s)
- Hikari Kitadai
- Department of Chemistry, Boston University, Boston, MA 02215, USA; (H.K.); (M.Y.)
| | - Meng Yuan
- Department of Chemistry, Boston University, Boston, MA 02215, USA; (H.K.); (M.Y.)
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China;
| | - Yongqiang Ma
- Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China;
| | - Xi Ling
- Department of Chemistry, Boston University, Boston, MA 02215, USA; (H.K.); (M.Y.)
- Division of Materials Science and Engineering, Boston University, Boston, MA 02215, USA
- The Photonics Center, Boston University, Boston, MA 02215, USA
- Correspondence:
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30
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Trends in the Implementation of Advanced Plasmonic Materials in Optical Fiber Sensors (2010–2020). CHEMOSENSORS 2021. [DOI: 10.3390/chemosensors9040064] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
In recent years, the interaction between light and metallic films have been proven to be a highly powerful tool for optical sensing applications. We have witnessed the development of highly sensitive commercial devices based on Surface Plasmon Resonances. There has been continuous effort to integrate this plasmonic sensing technology using micro and nanofabrication techniques with the optical fiber sensor world, trying to get better, smaller and cost-effective high performance sensing solutions. In this work, we present a review of the latest and more relevant scientific contributions to the optical fiber sensors field using plasmonic materials over the last decade. The combination of optical fiber technology with metallic micro and nanostructures that allow plasmonic interactions have opened a complete new and promising field of study. We review the main advances in the integration of such metallic micro/nanostructures onto the optical fibers, discuss the most promising fabrication techniques and show the new trends in physical, chemical and biological sensing applications.
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31
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Upendar S, Ando RF, Schmidt MA, Weiss T. Orders of magnitude loss reduction in photonic bandgap fibers by engineering the core surround. OPTICS EXPRESS 2021; 29:8606-8616. [PMID: 33820304 DOI: 10.1364/oe.416030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Accepted: 01/29/2021] [Indexed: 06/12/2023]
Abstract
We demonstrate how to reduce the loss in photonic bandgap fibers by orders of magnitude by varying the radius of the corner strands in the core surround. As a fundamental working principle we find that changing the corner strand radius can lead to backscattering of light into the fiber core. Selecting an optimal corner strand radius can thus reduce the loss of the fundamental core mode in a specific wavelength range by almost two orders of magnitude when compared to an unmodified cladding structure. Using the optimal corner radius for each transmission window, we observe the low-loss behavior for the first and second bandgaps, with the losses in the second bandgap being even lower than that of the first one. Our approach of reducing the confinement loss is conceptually applicable to all kinds of photonic bandgap fibers including hollow core and all-glass fibers as well as on-chip light cages. Therefore, our concept paves the way to low-loss light guidance in such systems with substantially reduced fabrication complexity.
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Koehler P, Lawson T, Neises J, Willkomm J, Martindale BCM, Hutton GAM, Antón-García D, Lage A, Gentleman AS, Frosz MH, Russell PSJ, Reisner E, Euser TG. Optofluidic Photonic Crystal Fiber Microreactors for In Situ Studies of Carbon Nanodot-Driven Photoreduction. Anal Chem 2021; 93:895-901. [PMID: 33315379 DOI: 10.1021/acs.analchem.0c03546] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Performing quantitative in situ spectroscopic analysis on minuscule sample volumes is a common difficulty in photochemistry. To address this challenge, we use a hollow-core photonic crystal fiber (HC-PCF) that guides light at the center of a microscale liquid channel and acts as an optofluidic microreactor with a reaction volume of less than 35 nL. The system was used to demonstrate in situ optical detection of photoreduction processes that are key components of many photocatalytic reaction schemes. The photoreduction of viologens (XV2+) to the radical XV•+ in a homogeneous mixture with carbon nanodot (CND) light absorbers is studied for a range of different carbon dots and viologens. Time-resolved absorption spectra, measured over several UV irradiation cycles, are interpreted with a quantitative kinetic model to determine photoreduction and photobleaching rate constants. The powerful combination of time-resolved, low-volume absorption spectroscopy and kinetic modeling highlights the potential of optofluidic microreactors as a highly sensitive, quantitative, and rapid screening platform for novel photocatalysts and flow chemistry in general.
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Affiliation(s)
- Philipp Koehler
- NanoPhotonics Centre, Cavendish Laboratory, Department of Physics, University of Cambridge, JJ Thomson Avenue, Cambridge CB3 0HE, United Kingdom.,Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Takashi Lawson
- NanoPhotonics Centre, Cavendish Laboratory, Department of Physics, University of Cambridge, JJ Thomson Avenue, Cambridge CB3 0HE, United Kingdom.,Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Julian Neises
- NanoPhotonics Centre, Cavendish Laboratory, Department of Physics, University of Cambridge, JJ Thomson Avenue, Cambridge CB3 0HE, United Kingdom
| | - Janina Willkomm
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Benjamin C M Martindale
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Georgina A M Hutton
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Daniel Antón-García
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Ava Lage
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Alexander S Gentleman
- NanoPhotonics Centre, Cavendish Laboratory, Department of Physics, University of Cambridge, JJ Thomson Avenue, Cambridge CB3 0HE, United Kingdom
| | - Michael H Frosz
- Max Planck Institute for the Science of Light, Staudtstr. 2, 91058 Erlangen, Germany
| | - Philip St J Russell
- Max Planck Institute for the Science of Light, Staudtstr. 2, 91058 Erlangen, Germany
| | - Erwin Reisner
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Tijmen G Euser
- NanoPhotonics Centre, Cavendish Laboratory, Department of Physics, University of Cambridge, JJ Thomson Avenue, Cambridge CB3 0HE, United Kingdom
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Huang K, Gong S, Zhang L, Zhang H, Li S, Ye G, Huang F. Ultrathin ZIF-8 wrapping on Au-dotted Ag-nanowires for highly selective SERS-based CO 2 gas detection. Chem Commun (Camb) 2021; 57:2144-2147. [PMID: 33521804 DOI: 10.1039/d0cc07822k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Ultrathin ZIF-8 wrapping was constructed on Au-dotted Ag-nanowires to obtain Ag@Au@ZIF-8. A thin film (Ag@Au@ZIF-8 NWs/TF) was constructed to selectively adsorb and enrich CO2 molecules, which solved the problem that SERS signals could not be detected due to the poor affinity of the metal surface and the low concentration of gas molecules.
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Affiliation(s)
- Kun Huang
- Lab of Clean Energy & Environmental Catalysis, AnHui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Institute of Physical Science and Information Technology, School of Chemistry and Chemical Engineering, Anhui University, Hefei 230601, P. R. China.
| | - Shanshan Gong
- Lab of Clean Energy & Environmental Catalysis, AnHui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Institute of Physical Science and Information Technology, School of Chemistry and Chemical Engineering, Anhui University, Hefei 230601, P. R. China.
| | - Lina Zhang
- Lab of Clean Energy & Environmental Catalysis, AnHui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Institute of Physical Science and Information Technology, School of Chemistry and Chemical Engineering, Anhui University, Hefei 230601, P. R. China.
| | - Hui Zhang
- Institute of Physical Science and Information Technology, Anhui University, Hefei 230601, Anhui, China
| | - Shikuo Li
- Lab of Clean Energy & Environmental Catalysis, AnHui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Institute of Physical Science and Information Technology, School of Chemistry and Chemical Engineering, Anhui University, Hefei 230601, P. R. China.
| | - Guisheng Ye
- Lab of Clean Energy & Environmental Catalysis, AnHui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Institute of Physical Science and Information Technology, School of Chemistry and Chemical Engineering, Anhui University, Hefei 230601, P. R. China.
| | - Fangzhi Huang
- Lab of Clean Energy & Environmental Catalysis, AnHui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials, Institute of Physical Science and Information Technology, School of Chemistry and Chemical Engineering, Anhui University, Hefei 230601, P. R. China.
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34
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Iqbal F, Biswas S, Bulbul AAM, Rahaman H, Hossain MB, Rahaman ME, Awal MA. Alcohol sensing and classification using PCF-based sensor. SENSING AND BIO-SENSING RESEARCH 2020. [DOI: 10.1016/j.sbsr.2020.100384] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Bulbul AAM, Rahaman H, Biswas S, Hossain MB, Nahid AA. Design and numerical analysis of a PCF-based bio-sensor for breast cancer cell detection in the THz regime. SENSING AND BIO-SENSING RESEARCH 2020. [DOI: 10.1016/j.sbsr.2020.100388] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
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Ermatov T, Noskov RE, Machnev AA, Gnusov I, Аtkin V, Lazareva EN, German SV, Kosolobov SS, Zatsepin TS, Sergeeva OV, Skibina JS, Ginzburg P, Tuchin VV, Lagoudakis PG, Gorin DA. Multispectral sensing of biological liquids with hollow-core microstructured optical fibres. LIGHT, SCIENCE & APPLICATIONS 2020; 9:173. [PMID: 33082942 PMCID: PMC7548008 DOI: 10.1038/s41377-020-00410-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 09/17/2020] [Accepted: 09/24/2020] [Indexed: 05/25/2023]
Abstract
The state of the art in optical biosensing is focused on reaching high sensitivity at a single wavelength by using any type of optical resonance. This common strategy, however, disregards the promising possibility of simultaneous measurements of a bioanalyte's refractive index over a broadband spectral domain. Here, we address this issue by introducing the approach of in-fibre multispectral optical sensing (IMOS). The operating principle relies on detecting changes in the transmission of a hollow-core microstructured optical fibre when a bioanalyte is streamed through it via liquid cells. IMOS offers a unique opportunity to measure the refractive index at 42 wavelengths, with a sensitivity up to ~3000 nm per refractive index unit (RIU) and a figure of merit reaching 99 RIU-1 in the visible and near-infra-red spectral ranges. We apply this technique to determine the concentration and refractive index dispersion for bovine serum albumin and show that the accuracy meets clinical needs.
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Affiliation(s)
- Timur Ermatov
- Skolkovo Institute of Science and Technology, 3 Nobelya str., Moscow, 121205 Russia
| | - Roman E. Noskov
- Department of Electrical Engineering, Tel Aviv University, Ramat Aviv, Tel Aviv, 69978 Israel
- Light-Matter Interaction Centre, Tel Aviv University, Ramat Aviv, Tel Aviv, 69978 Israel
| | - Andrey A. Machnev
- Department of Electrical Engineering, Tel Aviv University, Ramat Aviv, Tel Aviv, 69978 Israel
- Light-Matter Interaction Centre, Tel Aviv University, Ramat Aviv, Tel Aviv, 69978 Israel
| | - Ivan Gnusov
- Skolkovo Institute of Science and Technology, 3 Nobelya str., Moscow, 121205 Russia
| | - Vsevolod Аtkin
- Saratov State University, 83 Astrakhanskaya str., Saratov, 410012 Russia
| | - Ekaterina N. Lazareva
- Saratov State University, 83 Astrakhanskaya str., Saratov, 410012 Russia
- Tomsk State University, 36 Lenin’s av., Tomsk, 634050 Russia
| | - Sergei V. German
- Skolkovo Institute of Science and Technology, 3 Nobelya str., Moscow, 121205 Russia
| | - Sergey S. Kosolobov
- Skolkovo Institute of Science and Technology, 3 Nobelya str., Moscow, 121205 Russia
| | - Timofei S. Zatsepin
- Skolkovo Institute of Science and Technology, 3 Nobelya str., Moscow, 121205 Russia
- M.V. Lomonosov Moscow State University, Leninskie Gory, 1-3, Moscow, 119992 Russia
| | - Olga V. Sergeeva
- Skolkovo Institute of Science and Technology, 3 Nobelya str., Moscow, 121205 Russia
| | - Julia S. Skibina
- SPE LLC Nanostructured Glass Technology, 101 50 Let Oktjabrja, Saratov, 410033 Russia
| | - Pavel Ginzburg
- Department of Electrical Engineering, Tel Aviv University, Ramat Aviv, Tel Aviv, 69978 Israel
- Light-Matter Interaction Centre, Tel Aviv University, Ramat Aviv, Tel Aviv, 69978 Israel
- Center for Photonics and 2D Materials, Moscow Institute of Physics and Technology, Dolgoprudny, 141700 Russia
| | - Valery V. Tuchin
- Saratov State University, 83 Astrakhanskaya str., Saratov, 410012 Russia
- Tomsk State University, 36 Lenin’s av., Tomsk, 634050 Russia
- Institute of Precision Mechanics and Control of the Russian Academy of Sciences, 24 Rabochaya str., Saratov, 410028 Russia
| | - Pavlos G. Lagoudakis
- Skolkovo Institute of Science and Technology, 3 Nobelya str., Moscow, 121205 Russia
| | - Dmitry A. Gorin
- Skolkovo Institute of Science and Technology, 3 Nobelya str., Moscow, 121205 Russia
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Rahaman ME, Hossain MM, Shekhar Mondal H, Saha R, Saif Muntaseer A. Theoretical analysis of large negative dispersion photonic crystal fiber with small confinement loss. APPLIED OPTICS 2020; 59:8925-8931. [PMID: 33104579 DOI: 10.1364/ao.397420] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Accepted: 09/10/2020] [Indexed: 06/11/2023]
Abstract
Solid core circular and octagonal photonic crystal fibers (CPCF and OPCF) are proposed for analyzing different guiding properties such as dispersion, effective mode area, nonlinearity, and confinement loss from 0.8 to 2.6 µm wavelength. The proposed structures use three different types of background materials: SF10, BK7, and silica. Moreover, the fill fraction is varied by changing the diameter of the air hole where the lattice pitch is unchanged. The proposed PCFs show a high negative dispersion with low confinement loss and small effective mode area. In the proposed design, the finite element method with a perfectly matched layer absorbing boundary condition is used. At 1.8 µm wavelength with 0.6 fill fraction, the maximum negative dispersion of -922.5ps/(nm.km) is observed for CPCF when the background material is SF10. In addition, at this particular wavelength, the confinement loss is observed to be very small. Moreover, -560.12ps/(nm.km) dispersion is found for the similar condition at 1.55 µm wavelength. On the other hand, using BK7 as the background material, -706.77ps/(nm.km) dispersion is found at 1.55 µm wavelength for CPCF. Results also imply that CPCF shows better performance than OPCF for a wide wavelength range. Furthermore, at 1.55 µm wavelength, silica-based glass exhibits maximum dispersion, whereas increasing wavelength flint type glass shows the similar result. Analyzing different guiding properties of PCFs has significant impact on broadband dispersion compensation applications, especially using SF10.
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38
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Li J, Chen T. Transition metal complexes as photosensitizers for integrated cancer theranostic applications. Coord Chem Rev 2020. [DOI: 10.1016/j.ccr.2020.213355] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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39
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Islam MR, Hossain MA, Talha KMA, Munia RK. A novel hollow core photonic sensor for liquid analyte detection in the terahertz spectrum: design and analysis. OPTICAL AND QUANTUM ELECTRONICS 2020; 52:415. [DOI: 10.1007/s11082-020-02532-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Accepted: 09/02/2020] [Indexed: 09/01/2023]
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Ermatov T, Skibina JS, Tuchin VV, Gorin DA. Functionalized Microstructured Optical Fibers: Materials, Methods, Applications. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E921. [PMID: 32092963 PMCID: PMC7078627 DOI: 10.3390/ma13040921] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/26/2020] [Revised: 02/13/2020] [Accepted: 02/17/2020] [Indexed: 12/17/2022]
Abstract
Microstructured optical fiber-based sensors (MOF) have been widely developed finding numerous applications in various fields of photonics, biotechnology, and medicine. High sensitivity to the refractive index variation, arising from the strong interaction between a guided mode and an analyte in the test, makes MOF-based sensors ideal candidates for chemical and biochemical analysis of solutions with small volume and low concentration. Here, we review the modern techniques used for the modification of the fiber's structure, which leads to an enhanced detection sensitivity, as well as the surface functionalization processes used for selective adsorption of target molecules. Novel functionalized MOF-based devices possessing these unique properties, emphasize the potential applications for fiber optics in the field of modern biophotonics, such as remote sensing, thermography, refractometric measurements of biological liquids, detection of cancer proteins, and concentration analysis. In this work, we discuss the approaches used for the functionalization of MOFs, with a focus on potential applications of the produced structures.
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Affiliation(s)
- Timur Ermatov
- Skolkovo Institute of Science and Technology, 3 Nobelya str., 121205 Moscow, Russia
| | - Julia S. Skibina
- SPE LLC Nanostructured Glass Technology, 101 50 Let Oktjabrja, 410033 Saratov, Russia;
| | - Valery V. Tuchin
- Research Educational Institute of Optics and Biophotonics, Saratov State University, 83 Astrakhanskaya str., 410012 Saratov, Russia;
- Interdisciplinary Laboratory of Biophotonics, Tomsk State University, 36 Lenin’s av., 634050 Tomsk, Russia
- Laboratory of Laser Diagnostics of Technical and Living Systems, Institute of Precision Mechanics and Control of the Russian Academy of Sciences, 24 Rabochaya str., 410028 Saratov, Russia
| | - Dmitry A. Gorin
- Skolkovo Institute of Science and Technology, 3 Nobelya str., 121205 Moscow, Russia
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41
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Cavell AC, Krasecki VK, Li G, Sharma A, Sun H, Thompson MP, Forman CJ, Guo SY, Hickman RJ, Parrish KA, Aspuru-Guzik A, Cronin L, Gianneschi NC, Goldsmith RH. Optical monitoring of polymerizations in droplets with high temporal dynamic range. Chem Sci 2020; 11:2647-2656. [PMID: 34084323 PMCID: PMC8157680 DOI: 10.1039/c9sc05559b] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Accepted: 02/02/2020] [Indexed: 12/23/2022] Open
Abstract
The ability to optically monitor a chemical reaction and generate an in situ readout is an important enabling technology, with applications ranging from the monitoring of reactions in flow, to the critical assessment step for combinatorial screening, to mechanistic studies on single reactant and catalyst molecules. Ideally, such a method would be applicable to many polymers and not require only a specific monomer for readout. It should also be applicable if the reactions are carried out in microdroplet chemical reactors, which offer a route to massive scalability in combinatorial searches. We describe a convenient optical method for monitoring polymerization reactions, fluorescence polarization anisotropy monitoring, and show that it can be applied in a robotically generated microdroplet. Further, we compare our method to an established optical reaction monitoring scheme, the use of Aggregation-Induced Emission (AIE) dyes, and find the two monitoring schemes offer sensitivity to different temporal regimes of the polymerization, meaning that the combination of the two provides an increased temporal dynamic range. Anisotropy is sensitive at early times, suggesting it will be useful for detecting new polymerization "hits" in searches for new reactivity, while the AIE dye responds at longer times, suggesting it will be useful for detecting reactions capable of reaching higher molecular weights.
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Affiliation(s)
- Andrew C Cavell
- Department of Chemistry, University of Wisconsin-Madison 1101 University Avenue Madison WI 53706 USA
| | - Veronica K Krasecki
- Department of Chemistry, University of Wisconsin-Madison 1101 University Avenue Madison WI 53706 USA
| | - Guoping Li
- Department of Chemistry, Northwestern University 2145 Sheridan Road Evanston IL 60208 USA
| | - Abhishek Sharma
- School of Chemistry, University of Glasgow Joseph Black Building, University Avenue Glasgow Scotland G12 8QQ UK
| | - Hao Sun
- Department of Chemistry, Northwestern University 2145 Sheridan Road Evanston IL 60208 USA
| | - Matthew P Thompson
- Department of Chemistry, Northwestern University 2145 Sheridan Road Evanston IL 60208 USA
| | - Christopher J Forman
- Department of Chemistry, Northwestern University 2145 Sheridan Road Evanston IL 60208 USA
| | - Si Yue Guo
- Department of Chemistry, University of Toronto 80 St. George Street Toronto Ontario M5S 3H6 Canada
- Department of Computer Science, University of Toronto 40 St. George Street Toronto Ontario M5S 2E4 Canada
| | - Riley J Hickman
- Department of Chemistry, University of Toronto 80 St. George Street Toronto Ontario M5S 3H6 Canada
- Department of Computer Science, University of Toronto 40 St. George Street Toronto Ontario M5S 2E4 Canada
| | - Katherine A Parrish
- Department of Chemistry, University of Wisconsin-Madison 1101 University Avenue Madison WI 53706 USA
| | - Alán Aspuru-Guzik
- Department of Chemistry, University of Toronto 80 St. George Street Toronto Ontario M5S 3H6 Canada
- Department of Computer Science, University of Toronto 40 St. George Street Toronto Ontario M5S 2E4 Canada
- Canadian Institute for Advanced Research (CIFAR) Senior Fellow Toronto Ontario M5S 1M1 Canada
- CIFAR Artificial Intelligence Chair, Vector Institute Toronto Ontario M5S 1M1 Canada
| | - Leroy Cronin
- School of Chemistry, University of Glasgow Joseph Black Building, University Avenue Glasgow Scotland G12 8QQ UK
| | - Nathan C Gianneschi
- Department of Chemistry, Northwestern University 2145 Sheridan Road Evanston IL 60208 USA
| | - Randall H Goldsmith
- Department of Chemistry, University of Wisconsin-Madison 1101 University Avenue Madison WI 53706 USA
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Imberti C, Zhang P, Huang H, Sadler PJ. New Designs for Phototherapeutic Transition Metal Complexes. Angew Chem Int Ed Engl 2020; 59:61-73. [PMID: 31310436 PMCID: PMC6973108 DOI: 10.1002/anie.201905171] [Citation(s) in RCA: 240] [Impact Index Per Article: 60.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Revised: 06/19/2019] [Indexed: 12/17/2022]
Abstract
In this Minireview, we highlight recent advances in the design of transition metal complexes for photodynamic therapy (PDT) and photoactivated chemotherapy (PACT), and discuss the challenges and opportunities for the translation of such agents into clinical use. New designs for light-activated transition metal complexes offer photoactivatable prodrugs with novel targeted mechanisms of action. Light irradiation can provide spatial and temporal control of drug activation, increasing selectivity and reducing side-effects. The photophysical and photochemical properties of transition metal complexes can be controlled by the appropriate choice of the metal, its oxidation state, the number and types of ligands, and the coordination geometry.
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Affiliation(s)
- Cinzia Imberti
- Department of ChemistryUniversity of WarwickCoventryCV4 7ALUK
| | - Pingyu Zhang
- College of Chemistry and Environmental EngineeringShenzhen UniversityShenzhen518060China
- Department of ChemistryUniversity of WarwickCoventryCV4 7ALUK
| | - Huaiyi Huang
- School of Pharmaceutical Science (Shenzhen)Sun Yat-sen UniversityGuangzhou510275China
- Department of ChemistryUniversity of WarwickCoventryCV4 7ALUK
| | - Peter J. Sadler
- Department of ChemistryUniversity of WarwickCoventryCV4 7ALUK
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43
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Affiliation(s)
- Thomas H. Rehm
- Division Energy & Chemical Technology / Flow Chemistry GroupFraunhofer Institute for Microengineering and Microsystems IMM Carl-Zeiss-Straße 18–20 55129 Mainz Germany
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44
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Gao D, Yang X, Teng P, Liu Z, Yang J, Kong D, Zhang J, Luo M, Li Z, Tian F, Yuan L. Optofluidic in-fiber integrated surface-enhanced Raman spectroscopy detection based on a hollow optical fiber with a suspended core. OPTICS LETTERS 2019; 44:5173-5176. [PMID: 31674959 DOI: 10.1364/ol.44.005173] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Accepted: 07/09/2019] [Indexed: 06/10/2023]
Abstract
In this Letter, we propose, to the best of our knowledge, the first in-fiber optofluidic Raman surface-enhanced Raman spectroscopy (SERS) sensor based on a microstructured hollow fiber (MHF) with a suspended core. Taking advantage of the unique internal structure, we immobilize silver nanoparticles with an SERS effect in the MHF by chemical bonding. The Raman signal of the microfluidic sample is excited by the excitation light in the suspended core through an evanescent field. Then the online SERS signal can be coupled back into the core and detected. To demonstrate the feasibility of the device, rhodamine 6G is chosen as the analyte, and high-quality SERS spectra are detected with the limit of detection of 1×10-14 M. Furthermore, an online optofluidic test is conducted on ceftriaxone (C18H18N8O7S3) to examine its capabilities in antibiotic sensing. The results show that the LOD of the samples is 10-6 M. Significantly, this Letter provides an integrated optofluidic in-fiber SERS sensor with a microchannel that can be integrated with chip devices without spatial optical coupling, which has a broad application in medicine and food safety, as well as various aspects of biological in-fiber sensing.
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Dinish US, Beffara F, Humbert G, Auguste JL, Olivo M. Surface-enhanced Raman scattering-active photonic crystal fiber probe: Towards next generation liquid biopsy sensor with ultra high sensitivity. JOURNAL OF BIOPHOTONICS 2019; 12:e201900027. [PMID: 30891937 DOI: 10.1002/jbio.201900027] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2019] [Revised: 03/17/2019] [Accepted: 03/18/2019] [Indexed: 06/09/2023]
Abstract
The tremendous enhancement factors that surface-enhanced Raman scattering (SERS) possesses coupled with the flexibility of photonic crystal fibers (PCFs) pave the way to a new generation of ultrasensitive biosensors. Thanks to the unique structure of PCFs, which allows direct incorporation of an analyte into the axially aligned air channels, interaction between the analyte and excitation light could be increased many folds leading to flexible, reliable and sensitive probes that can be used in preclinical or clinical biosensing. SERS-active PCF probes provide unique opportunity to develop an opto-fluidic liquid biopsy needle sensor that enables one-step integrated sample collection and testing for disease diagnosis. Specificity being a key parameter to biosensors, the PCF inside the biopsy needle could be functionalized with targeting moieties to detect specific biomarkers. In this review article, we present some of the most promising recent biosensors based on PCFs including hollow-core PCFs, suspended-core PCFs and side-channel PCFs. We provide a wide range of applications of such platform using Raman spectroscopy, label free SERS or labeled SERS detection and analyze some of the main challenges to be addressed for translating it to a clinically viable next generation sensitive biopsy needle sensing probe.
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Affiliation(s)
- U S Dinish
- Lab of Bio-Optical Imaging, Singapore Bioimaging Consortium (SBIC), Agency for Science Technology and Research (A*STAR), Singapore
| | - Flavien Beffara
- Lab of Bio-Optical Imaging, Singapore Bioimaging Consortium (SBIC), Agency for Science Technology and Research (A*STAR), Singapore
- XLIM Research Institute, UMR 7252 CNRS/Limoges University, Limoges, France
| | - Georges Humbert
- XLIM Research Institute, UMR 7252 CNRS/Limoges University, Limoges, France
| | - Jean-Louis Auguste
- XLIM Research Institute, UMR 7252 CNRS/Limoges University, Limoges, France
| | - Malini Olivo
- Lab of Bio-Optical Imaging, Singapore Bioimaging Consortium (SBIC), Agency for Science Technology and Research (A*STAR), Singapore
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46
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Tong HT, Nishiharaguchi N, Suzuki T, Ohishi Y. Mid-infrared transmission by a tellurite hollow core optical fiber. OPTICS EXPRESS 2019; 27:30576-30588. [PMID: 31684302 DOI: 10.1364/oe.27.030576] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Accepted: 09/26/2019] [Indexed: 06/10/2023]
Abstract
We experimentally demonstrate for the first time a successful fabrication of a tellurite hollow core optical fiber which has a mid-infrared transmission range. The wall thickness of each cladding air-hole is about 2.8 µm and the outer diameter of the full air-hole structure D is approximately 110 µm. The results show that the measured transmission spectrum can expand up to 3.9 µm. In addition, it is expected that the transmission can extend to around 6 µm. When the input light is linearly polarized, it can be maintained after propagating through a 17-cm-long fiber.
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47
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Imberti C, Zhang P, Huang H, Sadler PJ. New Designs for Phototherapeutic Transition Metal Complexes. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201905171] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Cinzia Imberti
- Department of Chemistry University of Warwick Coventry CV4 7AL UK
| | - Pingyu Zhang
- College of Chemistry and Environmental Engineering Shenzhen University Shenzhen 518060 China
- Department of Chemistry University of Warwick Coventry CV4 7AL UK
| | - Huaiyi Huang
- School of Pharmaceutical Science (Shenzhen) Sun Yat-sen University Guangzhou 510275 China
- Department of Chemistry University of Warwick Coventry CV4 7AL UK
| | - Peter J. Sadler
- Department of Chemistry University of Warwick Coventry CV4 7AL UK
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48
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Zhang C, Xu B, Gong C, Luo J, Zhang Q, Gong Y. Fiber Optofluidic Technology Based on Optical Force and Photothermal Effects. MICROMACHINES 2019; 10:E499. [PMID: 31357458 PMCID: PMC6722967 DOI: 10.3390/mi10080499] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2019] [Revised: 07/08/2019] [Accepted: 07/19/2019] [Indexed: 02/06/2023]
Abstract
Optofluidics is an exciting new area of study resulting from the fusion of microfluidics and photonics. It broadens the application and extends the functionality of microfluidics and has been extensively investigated in biocontrol, molecular diagnosis, material synthesis, and drug delivery. When light interacts with a microfluidic system, optical force and/or photothermal effects may occur due to the strong interaction between light and liquid. Such opto-physical effects can be used for optical manipulation and sensing due to their unique advantages over conventional microfluidics and photonics, including their simple fabrication process, flexible manipulation capability, compact configuration, and low cost. In this review, we summarize the latest progress in fiber optofluidic (FOF) technology based on optical force and photothermal effects in manipulation and sensing applications. Optical force can be used for optofluidic manipulation and sensing in two categories: stable single optical traps and stable combined optical traps. The photothermal effect can be applied to optofluidics based on two major structures: optical microfibers and optical fiber tips. The advantages and disadvantages of each FOF technology are also discussed.
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Affiliation(s)
- Chenlin Zhang
- Science and Technology on Security Communication Laboratory, Institute of Southwestern Communication, Chengdu 610041, China
| | - Bingjie Xu
- Science and Technology on Security Communication Laboratory, Institute of Southwestern Communication, Chengdu 610041, China.
| | - Chaoyang Gong
- Key Laboratory of Optical Fiber Sensing and Communications (Ministry of Education), School of Information and Communication Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Jingtang Luo
- State Grid Sichuan Economic Research Institute, Chengdu 610041, China
| | - Quanming Zhang
- State Grid Sichuan Economic Research Institute, Chengdu 610041, China
| | - Yuan Gong
- Key Laboratory of Optical Fiber Sensing and Communications (Ministry of Education), School of Information and Communication Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China.
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Tu X, Luo Y, Huang T, Gan J, Song C. Optofluidic refractive index sensor based on asymmetric diffraction. OPTICS EXPRESS 2019; 27:17809-17818. [PMID: 31252734 DOI: 10.1364/oe.27.017809] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Accepted: 05/29/2019] [Indexed: 06/09/2023]
Abstract
A novel optofluidic refracrtive index (RI) sensor was proposed based on asymmetric Fraunhofer diffraction. In-plane optofluidic lens, light source, slit, diffraction pattern visualization zone and optical path were integrated into the microfluidic networks to avoid the manual alignment of the optical components as well as to reduce the cost of external bulky components. Unlike the conventional RI sensor, this device visualizes the bulk refractive index change of the liquid through a diffraction image, which is readily read-out for clinical diagnosis right at the point-of-care or on-site security check. In the experiment, the device can measure a RI change of as low as ~10-5 RIU. A low noise-equivalent detection limit (NEDL) of ~10-6 refractive index unit (RIU) and high sensitivity of ~1.1 × 104/RIU were achieved. The new device is practical and suitable to be extended for high throughput applications by simultaneously reading multiple chips with an 2D-array image sensor.
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50
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Atiqullah SM, Palit A, Reja MI, Akhtar J, Fatema S, Absar R. Detection of harmful food additives using highly sensitive photonic crystal fiber. SENSING AND BIO-SENSING RESEARCH 2019. [DOI: 10.1016/j.sbsr.2019.100275] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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