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Li T, Lu Y, Liu L, He Y, Huang J, Peng X. Efficient degradation of hexabromocyclododecane using montmorillonite supported nano-zero-valent iron and Citrobacter sp. Y3. JOURNAL OF HAZARDOUS MATERIALS 2023; 457:131739. [PMID: 37269562 DOI: 10.1016/j.jhazmat.2023.131739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 05/15/2023] [Accepted: 05/28/2023] [Indexed: 06/05/2023]
Abstract
The coupling of modified nanoscale zero-valent iron (nZVI) with organohalide-degrading bacteria provides a promising solution for the remediation of hexabromocyclododecane (HBCD)-contaminated environments. However, the interactions between modified nZVI and dehalogenase bacteria are intricate, and the mechanisms of synergistic action and electron transfer are not clear, and requires further specific investigation. In this study, HBCD was used as a model pollutant, and stable isotope analysis revealed that organic montmorillonite (OMt)-supported nZVI coupled with the degrading bacterial strain Citrobacter sp. Y3 (nZVI/OMt-Y3) can use [13C]HBCD as the sole carbon source and degrade or even mineralise it into 13CO2 with a maximum conversion rate of 100% within approximately 5 days. Analysis of the intermediates showed that the degradation of HBCD mainly involves three different pathways: dehydrobromination, hydroxylation, and debromination. The proteomics results showed that nZVI introduction promoted the transport of electrons and debromination. Combining the results from XPS, FTIR, and Raman spectroscopy with the analysis results of proteinomics and biodegradation products, we verified the process of electron transport and proposed a metabolic mechanism of HBCD degradation by the nZVI/OMt-Y3. Moreover, this study provides insightful avenues and models for the further remediation of HBCD and other similar pollutants in the environment.
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Affiliation(s)
- Tianyu Li
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510006, China
| | - Yingyuan Lu
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510006, China
| | - Lei Liu
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510006, China
| | - Yuzhe He
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510006, China
| | - Jingfei Huang
- College of Plant Protection, Fujian Agriculture and Forestry University, 15 Shangxiadian Road, Fuzhou 350002, China.
| | - Xingxing Peng
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510006, China; Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou 510275, China.
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2
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Laible AR, Dinius A, Schrader M, Krull R, Kwade A, Briesen H, Schmideder S. Effects and interactions of metal oxides in microparticle-enhanced cultivation of filamentous microorganisms. Eng Life Sci 2022; 22:725-743. [PMID: 36514528 PMCID: PMC9731605 DOI: 10.1002/elsc.202100075] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 08/13/2021] [Accepted: 09/17/2021] [Indexed: 12/16/2022] Open
Abstract
Filamentous microorganisms are used as molecular factories in industrial biotechnology. In 2007, a new approach to improve productivity in submerged cultivation was introduced: microparticle-enhanced cultivation (MPEC). Since then, numerous studies have investigated the influence of microparticles on the cultivation. Most studies considered MPEC a morphology engineering approach, in which altered morphology results in increased productivity. But sometimes similar morphological changes lead to decreased productivity, suggesting that this hypothesis is not a sufficient explanation for the effects of microparticles. Effects of surface chemistry on particles were paid little attention, as particles were often considered chemically-inert and bioinert. However, metal oxide particles strongly interact with their environment. This review links morphological, physical, and chemical properties of microparticles with effects on culture broth, filamentous morphology, and molecular biology. More precisely, surface chemistry effects of metal oxide particles lead to ion leaching, adsorption of enzymes, and generation of reactive oxygen species. Therefore, microparticles interfere with gene regulation, metabolism, and activity of enzymes. To enhance the understanding of microparticle-based morphology engineering, further interactions between particles and cells are elaborated. The presented description of phenomena occurring in MPEC eases the targeted choice of microparticles, and thus, contributes to improving the productivity of microbial cultivation technology.
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Affiliation(s)
- Andreas Reiner Laible
- School of Life SciencesChair of Process Systems EngineeringTechnische Universität MünchenFreisingGermany
| | - Anna Dinius
- Institute of Biochemical EngineeringTechnische Universität BraunschweigBraunschweigGermany
- Center of Pharmaceutical EngineeringTechnische Universität BraunschweigBraunschweigGermany
| | - Marcel Schrader
- Center of Pharmaceutical EngineeringTechnische Universität BraunschweigBraunschweigGermany
- Institute for Particle TechnologyTechnische Universität BraunschweigBraunschweigGermany
| | - Rainer Krull
- Institute of Biochemical EngineeringTechnische Universität BraunschweigBraunschweigGermany
- Center of Pharmaceutical EngineeringTechnische Universität BraunschweigBraunschweigGermany
| | - Arno Kwade
- Center of Pharmaceutical EngineeringTechnische Universität BraunschweigBraunschweigGermany
- Institute for Particle TechnologyTechnische Universität BraunschweigBraunschweigGermany
| | - Heiko Briesen
- School of Life SciencesChair of Process Systems EngineeringTechnische Universität MünchenFreisingGermany
| | - Stefan Schmideder
- School of Life SciencesChair of Process Systems EngineeringTechnische Universität MünchenFreisingGermany
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3
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Pahlow S, Hentschel S, Horbert P, Romero C, Lehniger L, Wagner S, Popp J, Weber K. Isolation of pathogenic bacteria from sputum samples using a 3D-printed cartridge system. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2021; 13:4884-4895. [PMID: 34590629 DOI: 10.1039/d1ay00924a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Within this contribution we introduce a 3D-printed cartridge system enabling the convenient and cost-efficient sample preparation from sputum for subsequent PCR based detection schemes. The developed fluidic system operates on pneumatic actuations. The closed system ensures a very low probability for contamination during sample processing, which is crucial when using a highly sensitive detection method such as PCR. The enrichment of the bacterial cells is achieved using different types of amine-functionalized particles. Our particle-based sample preparation approach yields intact and viable bacterial cells. Accordingly, not only PCR-based detection schemes can be employed, but also spectroscopic methods and biochemical tests, which require cultivation steps, are possible. The cartridge design in principle is compatible with magnetic and non-magnetic particle types. We investigated both variants and found that the performance of expanded glass beads is superior over the magnetic particles within the cartridge. Owing to the rather large size of the expanded glass beads, the dimensions of the channels can be enlarged, leading to lower hydrodynamic resistances, which is beneficial when processing viscous samples such as sputum. We verified the performance of our system using both artificial and real sputum samples containing Escherichia coli and Moraxella catarrhalis.
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Affiliation(s)
- Susanne Pahlow
- Friedrich Schiller University Jena, Institute of Physical Chemistry and Abbe Center of Photonics, Helmholtzweg 4, 07743 Jena, Germany.
- InfectoGnostics Research Campus Jena, Center for Applied Research, Philosophenweg 7, 07743 Jena, Germany
- Leibniz Institute of Photonic Technology - Member of the Research Alliance "Leibniz Health Technologies", Albert-Einstein-Straße 9, 07745 Jena, Germany
| | - Stefanie Hentschel
- Friedrich Schiller University Jena, Institute of Physical Chemistry and Abbe Center of Photonics, Helmholtzweg 4, 07743 Jena, Germany.
- InfectoGnostics Research Campus Jena, Center for Applied Research, Philosophenweg 7, 07743 Jena, Germany
- Leibniz Institute of Photonic Technology - Member of the Research Alliance "Leibniz Health Technologies", Albert-Einstein-Straße 9, 07745 Jena, Germany
| | - Peter Horbert
- Leibniz Institute of Photonic Technology - Member of the Research Alliance "Leibniz Health Technologies", Albert-Einstein-Straße 9, 07745 Jena, Germany
| | - Cynthia Romero
- Friedrich Schiller University Jena, Institute of Physical Chemistry and Abbe Center of Photonics, Helmholtzweg 4, 07743 Jena, Germany.
- Leibniz Institute of Photonic Technology - Member of the Research Alliance "Leibniz Health Technologies", Albert-Einstein-Straße 9, 07745 Jena, Germany
| | - Lydia Lehniger
- Friedrich Schiller University Jena, Institute of Physical Chemistry and Abbe Center of Photonics, Helmholtzweg 4, 07743 Jena, Germany.
- InfectoGnostics Research Campus Jena, Center for Applied Research, Philosophenweg 7, 07743 Jena, Germany
- Leibniz Institute of Photonic Technology - Member of the Research Alliance "Leibniz Health Technologies", Albert-Einstein-Straße 9, 07745 Jena, Germany
| | - Sascha Wagner
- Leibniz Institute of Photonic Technology - Member of the Research Alliance "Leibniz Health Technologies", Albert-Einstein-Straße 9, 07745 Jena, Germany
| | - Jürgen Popp
- Friedrich Schiller University Jena, Institute of Physical Chemistry and Abbe Center of Photonics, Helmholtzweg 4, 07743 Jena, Germany.
- InfectoGnostics Research Campus Jena, Center for Applied Research, Philosophenweg 7, 07743 Jena, Germany
- Leibniz Institute of Photonic Technology - Member of the Research Alliance "Leibniz Health Technologies", Albert-Einstein-Straße 9, 07745 Jena, Germany
| | - Karina Weber
- Friedrich Schiller University Jena, Institute of Physical Chemistry and Abbe Center of Photonics, Helmholtzweg 4, 07743 Jena, Germany.
- InfectoGnostics Research Campus Jena, Center for Applied Research, Philosophenweg 7, 07743 Jena, Germany
- Leibniz Institute of Photonic Technology - Member of the Research Alliance "Leibniz Health Technologies", Albert-Einstein-Straße 9, 07745 Jena, Germany
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4
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Hao N, Liu P, Bachman H, Pei Z, Zhang P, Rufo J, Wang Z, Zhao S, Huang TJ. Acoustofluidics-Assisted Engineering of Multifunctional Three-Dimensional Zinc Oxide Nanoarrays. ACS NANO 2020; 14:6150-6163. [PMID: 32352741 PMCID: PMC7415004 DOI: 10.1021/acsnano.0c02145] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
The integration of acoustics and microfluidics (termed acoustofluidics) presents a frontier in the engineering of functional micro-/nanomaterials. Acoustofluidic techniques enable active and precise spatiotemporal control of matter, providing great potential for the design of advanced nanosystems with tunable material properties. In this work, we introduce an acoustofluidic approach for engineering multifunctional three-dimensional nanostructure arrays and demonstrate their potential in enrichment and biosensing applications. In particular, our acoustofluidic device integrates an acoustic transducer with a sharp-edge-based acoustofluidic reactor that enables uniform patterning of zinc oxide (ZnO) nanoarrays with customizable lengths, densities, diameters, and other properties. The resulting ZnO nanoarray-coated glass capillaries can rapidly and efficiently capture and enrich biomolecules with sizes ranging from a few nanometers to several hundred nanometers. In order to enable the detection of these biomolecules, silver (Ag) nanoparticles are deposited onto the ZnO nanoarrays, and the integrated ZnO-Ag capillary device functions as a label-free plasmonic biosensing system for surface-enhanced Raman spectroscopy (SERS) based detection of exosomes, DNA oligonucleotides, and E. coli bacteria. The optical sensing enhancement of ZnO-Ag capillary is further validated through finite-difference time-domain (FDTD) simulations. These findings not only provide insights into the engineering of functional micro/nanomaterials using acoustofluidics but also shed light onto the development of portable microanalytical devices for point-of-care applications.
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Affiliation(s)
- Nanjing Hao
- Department of Mechanical Engineering and Materials Science, Duke University, Durham, North Carolina 27708, United States
| | - Pengzhan Liu
- Department of Mechanical Engineering and Materials Science, Duke University, Durham, North Carolina 27708, United States
| | - Hunter Bachman
- Department of Mechanical Engineering and Materials Science, Duke University, Durham, North Carolina 27708, United States
| | - Zhichao Pei
- Department of Mechanical Engineering and Materials Science, Duke University, Durham, North Carolina 27708, United States
| | - Peiran Zhang
- Department of Mechanical Engineering and Materials Science, Duke University, Durham, North Carolina 27708, United States
| | - Joseph Rufo
- Department of Mechanical Engineering and Materials Science, Duke University, Durham, North Carolina 27708, United States
| | - Zeyu Wang
- Department of Mechanical Engineering and Materials Science, Duke University, Durham, North Carolina 27708, United States
| | - Shuaiguo Zhao
- Department of Mechanical Engineering and Materials Science, Duke University, Durham, North Carolina 27708, United States
| | - Tony Jun Huang
- Department of Mechanical Engineering and Materials Science, Duke University, Durham, North Carolina 27708, United States
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5
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Rapid detection of the aspergillosis biomarker triacetylfusarinine C using interference-enhanced Raman spectroscopy. Anal Bioanal Chem 2020; 412:6351-6360. [PMID: 32170382 PMCID: PMC7442771 DOI: 10.1007/s00216-020-02571-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 02/20/2020] [Accepted: 03/02/2020] [Indexed: 11/02/2022]
Abstract
Triacetylfusarinine C (TAFC) is a siderophore produced by certain fungal species and might serve as a highly useful biomarker for the fast diagnosis of invasive aspergillosis. Due to its renal elimination, the biomarker is found in urine samples of patients suffering from Aspergillus infections. Accordingly, non-invasive diagnosis from this easily obtainable body fluid is possible. Within our contribution, we demonstrate how Raman microspectroscopy enables a sensitive and specific detection of TAFC. We characterized the TAFC iron complex and its iron-free form using conventional and interference-enhanced Raman spectroscopy (IERS) and compared the spectra with the related compound ferrioxamine B, which is produced by bacterial species. Even though IERS only offers a moderate enhancement of the Raman signal, the employment of respective substrates allowed lowering the detection limit to reach the clinically relevant range. The achieved limit of detection using IERS was 0.5 ng of TAFC, which is already well within the clinically relevant range. By using an extraction protocol, we were able to detect 1.4 μg/mL TAFC via IERS from urine within less than 3 h including sample preparation and data analysis. We could further show that TAFC and ferrioxamine B can be clearly distinguished by means of their Raman spectra even in very low concentrations.
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6
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Pahlow S, Lehniger L, Hentschel S, Seise B, Braun SD, Ehricht R, Berg A, Popp J, Weber K. Rapid Isolation and Identification of Pneumonia-Associated Pathogens from Sputum Samples Combining an Innovative Sample Preparation Strategy and Array-Based Detection. ACS OMEGA 2019; 4:10362-10369. [PMID: 31460130 PMCID: PMC6648014 DOI: 10.1021/acsomega.9b00904] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Accepted: 05/27/2019] [Indexed: 05/04/2023]
Abstract
With this study, an innovative and convenient enrichment and detection strategy for eight clinically relevant pneumonia pathogens, namely, Acinetobacter baumannii, Escherichia coli, Haemophilus influenzae, Klebsiella pneumoniae, Moraxella catarrhalis, Pseudomonas aeruginosa, Staphylococcus aureus, and Streptococcus pneumoniae is introduced. Bacteria were isolated from sputum samples with amine-modified particles exploiting pH-dependent electrostatic interactions between bacteria and the functionalized particle surface. Following this, an asymmetric polymerase chain reaction as well as subsequent stringent array-based hybridization with specific complementary capture probes were performed. Finally, results were visualized by an enzyme-induced silver nanoparticle deposition, providing stable endpoint signals and consequently an easy detection possibility. The assay was optimized using spiked samples of artificial sputum with different strains of the abovementioned bacterial species. Furthermore, actual patient sputum samples with S. pneumoniae were successfully analyzed. The presented approach offers great potential for the urgent need of a fast, specific, and reliable isolation and identification platform for important pneumonia pathogens, covering the complete process chain from sample preparation up to array-based detection within only 4 h.
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Affiliation(s)
- Susanne Pahlow
- Friedrich
Schiller University Jena, Institute of Physical Chemistry, Abbe Center of Photonics, Helmholtzweg 4, 07743 Jena, Germany
- InfectoGnostics
Research Campus Jena, Centre for Applied
Research, Philosophenweg
7, 07743 Jena, Germany
| | - Lydia Lehniger
- InfectoGnostics
Research Campus Jena, Centre for Applied
Research, Philosophenweg
7, 07743 Jena, Germany
- Leibniz
Institute of Photonic Technology—Member of the Research Alliance
“Leibniz Health Technologies”, Albert-Einstein-Straße 9, 07745 Jena, Germany
| | - Stefanie Hentschel
- InfectoGnostics
Research Campus Jena, Centre for Applied
Research, Philosophenweg
7, 07743 Jena, Germany
- Leibniz
Institute of Photonic Technology—Member of the Research Alliance
“Leibniz Health Technologies”, Albert-Einstein-Straße 9, 07745 Jena, Germany
| | - Barbara Seise
- InfectoGnostics
Research Campus Jena, Centre for Applied
Research, Philosophenweg
7, 07743 Jena, Germany
- Leibniz
Institute of Photonic Technology—Member of the Research Alliance
“Leibniz Health Technologies”, Albert-Einstein-Straße 9, 07745 Jena, Germany
| | - Sascha D. Braun
- InfectoGnostics
Research Campus Jena, Centre for Applied
Research, Philosophenweg
7, 07743 Jena, Germany
- Abbott
(Alere Technologies GmbH), Research and Development, Loebstedter Str. 103-105, 07749 Jena, Germany
| | - Ralf Ehricht
- Friedrich
Schiller University Jena, Institute of Physical Chemistry, Abbe Center of Photonics, Helmholtzweg 4, 07743 Jena, Germany
- InfectoGnostics
Research Campus Jena, Centre for Applied
Research, Philosophenweg
7, 07743 Jena, Germany
- Leibniz
Institute of Photonic Technology—Member of the Research Alliance
“Leibniz Health Technologies”, Albert-Einstein-Straße 9, 07745 Jena, Germany
- Abbott
(Alere Technologies GmbH), Research and Development, Loebstedter Str. 103-105, 07749 Jena, Germany
| | - Albrecht Berg
- INNOVENT
e.V. Jena, Prüssingstraße
27 B, 07745 Jena, Germany
| | - Jürgen Popp
- Friedrich
Schiller University Jena, Institute of Physical Chemistry, Abbe Center of Photonics, Helmholtzweg 4, 07743 Jena, Germany
- InfectoGnostics
Research Campus Jena, Centre for Applied
Research, Philosophenweg
7, 07743 Jena, Germany
- Leibniz
Institute of Photonic Technology—Member of the Research Alliance
“Leibniz Health Technologies”, Albert-Einstein-Straße 9, 07745 Jena, Germany
| | - Karina Weber
- Friedrich
Schiller University Jena, Institute of Physical Chemistry, Abbe Center of Photonics, Helmholtzweg 4, 07743 Jena, Germany
- InfectoGnostics
Research Campus Jena, Centre for Applied
Research, Philosophenweg
7, 07743 Jena, Germany
- Leibniz
Institute of Photonic Technology—Member of the Research Alliance
“Leibniz Health Technologies”, Albert-Einstein-Straße 9, 07745 Jena, Germany
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7
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Pahlow S, Mayerhöfer T, van der Loh M, Hübner U, Dellith J, Weber K, Popp J. Interference-Enhanced Raman Spectroscopy as a Promising Tool for the Detection of Biomolecules on Raman-Compatible Surfaces. Anal Chem 2018; 90:9025-9032. [PMID: 29992805 DOI: 10.1021/acs.analchem.8b01234] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Raman spectroscopy in combination with appropriate sample preparation strategies, for example, enrichment of bacteria on metal surfaces, has been proven to be a promising approach for rapidly diagnosing infectious diseases. Unfortunately, the fabrication of the required chip substrates is usually very challenging due to the lack of feasible instruments that can be used for quality control in the surface modification process. The intrinsically weak Raman signal of the biomolecules, employed for the enrichment of the micro-organisms on the chip surface, does not allow for monitoring of the successful immobilization by means of a Raman spectroscopic approach. Within this contribution, we demonstrate how a simple modification of a plain aluminum surface enables enhancement (or a decrease, if desired) of the Raman signal of molecules deposited on that surface. The manipulation of the Raman signal strength is achieved via exploiting interference effects that occur, if the highly reflective aluminum surface is modified with thin layers of transparent dielectrics like aluminum oxide. The thicknesses of these layers were determined by theoretical considerations and calculations. For the first time, it is shown that the interference effects can be used for the detection of biomolecules as well by investigating the siderophore ferrioxamine B. The observed degree of enhancement was approximately 1 order of magnitude. Moreover, the employed aluminum/aluminum oxide layers have been thoroughly characterized using atomic force and scanning electron microscopy as well as X-ray reflectometry and UV-Vis measurements.
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Affiliation(s)
- Susanne Pahlow
- Institute of Physical Chemistry and Abbe Center of Photonics , Friedrich Schiller University Jena , Helmholtzweg 4 , 07743 Jena , Germany.,Centre for Applied Research , InfectoGnostics Research Campus Jena , Philosophenweg 7 , 07743 Jena , Germany
| | - Thomas Mayerhöfer
- Institute of Physical Chemistry and Abbe Center of Photonics , Friedrich Schiller University Jena , Helmholtzweg 4 , 07743 Jena , Germany.,Leibniz Institute of Photonic Technology-Member of the research alliance "Leibniz Health Technologies" , Albert-Einstein-Straße 9 , 07745 Jena , Germany
| | - Marie van der Loh
- Leibniz Institute of Photonic Technology-Member of the research alliance "Leibniz Health Technologies" , Albert-Einstein-Straße 9 , 07745 Jena , Germany
| | - Uwe Hübner
- Leibniz Institute of Photonic Technology-Member of the research alliance "Leibniz Health Technologies" , Albert-Einstein-Straße 9 , 07745 Jena , Germany
| | - Jan Dellith
- Leibniz Institute of Photonic Technology-Member of the research alliance "Leibniz Health Technologies" , Albert-Einstein-Straße 9 , 07745 Jena , Germany
| | - Karina Weber
- Institute of Physical Chemistry and Abbe Center of Photonics , Friedrich Schiller University Jena , Helmholtzweg 4 , 07743 Jena , Germany.,Centre for Applied Research , InfectoGnostics Research Campus Jena , Philosophenweg 7 , 07743 Jena , Germany.,Leibniz Institute of Photonic Technology-Member of the research alliance "Leibniz Health Technologies" , Albert-Einstein-Straße 9 , 07745 Jena , Germany
| | - Jürgen Popp
- Institute of Physical Chemistry and Abbe Center of Photonics , Friedrich Schiller University Jena , Helmholtzweg 4 , 07743 Jena , Germany.,Centre for Applied Research , InfectoGnostics Research Campus Jena , Philosophenweg 7 , 07743 Jena , Germany.,Leibniz Institute of Photonic Technology-Member of the research alliance "Leibniz Health Technologies" , Albert-Einstein-Straße 9 , 07745 Jena , Germany
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