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Ho RJ, Yeh K, Liu YT, Bhargava R. Sensitive Discrete Frequency Mid-Infrared Absorption Spectroscopy Using Digitally Referenced Detection. Anal Chem 2024; 96:8990-8998. [PMID: 38771296 DOI: 10.1021/acs.analchem.4c00134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
Broadly tunable mid-infrared (IR) lasers, including quantum cascade lasers (QCL), are an asset for vibrational spectroscopy wherein high-intensity, coherent illumination can target specific spectral bands for rapid, direct chemical detection with microscopic localization. These emerging spectrometers are capable of high measurement throughputs with large detector signals from the high-intensity lasers and fast detection speeds as short as a single laser pulse, challenging the decades old benchmarks of Fourier transform infrared spectroscopy. However, noise in QCL emissions limits the feasible acquisition time for high signal-to-noise ratio (SNR) data. Here, we present an implementation that is broadly compatible with many laser-based spectrometer and microscope designs to address these limitations by leveraging high-speed digitizers and dual detectors to digitally reference each pulse individually. Digitally referenced detection (DRD) is shown to improve measurement sensitivity, with broad spectral indifference, regardless of imbalance due to dissimilarities among system designs or component manufacturers. We incorporated DRD into existing instruments and demonstrated its generalizability: a spectrometer with a 10-fold reduction in spectral noise, a microscope with reduced pixel dwell times to as low as 1 pulse while maintaining SNR normally achieved when operating 8-fold slower, and finally, a spectrometer to measure vibrational circular dichroism (VCD) with a ∼ 4-fold reduction in scan times. The approach not only proves versatile and effective but can also be tailored for specific applications with minimal hardware changes, positioning it as a simple and promising module for spectrometer designs using lasers.
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Affiliation(s)
- Ruo-Jing Ho
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Kevin Yeh
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Yen-Ting Liu
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
- Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
| | - Rohit Bhargava
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
- Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
- Department of Chemical and Biomolecular Engineering, Department of Chemistry, Department of Mechanical Science and Engineering, and Cancer Center at Illinois, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States
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2
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Peterson KA, Francis RM, Banach CA, Bradley AM, Burton SD, Erickson JD, Lockwood SP, Jensen KL, Yokosuk MO, Johnson TJ, Myers TL. Method to derive the infrared complex refractive indices n(λ) and k(λ) for organic solids from KBr pellet absorption measurements. APPLIED OPTICS 2024; 63:1553-1565. [PMID: 38437368 DOI: 10.1364/ao.514661] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Accepted: 01/23/2024] [Indexed: 03/06/2024]
Abstract
Obtaining the complex refractive index vectors n(ν~) and k(ν~) allows calculation of the (infrared) reflectance spectrum that is obtained from a solid in any of its many morphological forms. We report an adaptation to the KBr pellet technique using two gravimetric dilutions to derive quantitative n(ν~)/k(ν~) for dozens of powders with greater repeatability. The optical constants of bisphenol A and sucrose are compared to those derived by other methods, particularly for powdered materials. The variability of the k values for bisphenol A was examined by 10 individual measurements, showing an average coefficient of variation for k peak heights of 5.6%. Though no established standards exist, the pellet-derived k peak values of bisphenol A differ by 11% and 31% from their single-angle- and ellipsometry-derived values, respectively. These values provide an initial estimate of the precision and accuracy of complex refractive indices that can be derived using this method. Limitations and advantages of the method are discussed, the salient advantage being a more rapid method to derive n/k for those species that do not readily form crystals or specular pellets.
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Teuber A, Caniglia G, Kranz C, Mizaikoff B. Graphene-enhanced quantum cascade laser infrared spectroscopy using diamond thin-film waveguides. Analyst 2023; 148:5144-5151. [PMID: 37702563 DOI: 10.1039/d3an00824j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/14/2023]
Abstract
Diamond thin-film waveguides were combined with quantum cascade lasers augmented by drop-casted graphene enabling surface-enhanced infrared absorption spectroscopy. Enhancing the signal provides access to an even more pronounced vibrational signature suitable for analytical scenarios where only a small sample volume and/or low analyte concentration levels are prevalent. To demonstrate the utility of this concept, taurine was investigated as a model analyte.
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Affiliation(s)
- Andrea Teuber
- Institute of Analytical and Bioanalytical Chemistry, University of Ulm, 89081 Ulm, Germany.
| | - Giada Caniglia
- Institute of Analytical and Bioanalytical Chemistry, University of Ulm, 89081 Ulm, Germany.
| | - Christine Kranz
- Institute of Analytical and Bioanalytical Chemistry, University of Ulm, 89081 Ulm, Germany.
| | - Boris Mizaikoff
- Institute of Analytical and Bioanalytical Chemistry, University of Ulm, 89081 Ulm, Germany.
- Hahn-Schickard, 89077 Ulm, Germany
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Teuber A, Caniglia G, Wild M, Godejohann M, Kranz C, Mizaikoff B. Espresso Science: Laser-Based Diamond Thin-Film Waveguide Sensors for the Quantification of Caffeine. ACS Sens 2023; 8:1871-1881. [PMID: 37125943 DOI: 10.1021/acssensors.2c01841] [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: 05/02/2023]
Abstract
Diamond thin-film waveguides with a nanocrystalline diamond layer of approximately 20 μm thickness were used in the mid-infrared regime in combination with quantum cascade lasers to detect the IR signature of caffeine. The diamond thin-film waveguides were fundamentally characterized with respect to their morphological properties via AFM and SEM. Theoretical simulations confirmed the feasibility of using a larger sensing area of approximately 50 mm2 compared to conventionally used strip waveguides. A comprehensive and comparative analysis confirmed the performance of the diamond thin-film-waveguide-based sensing system vs data obtained via conventional attenuated total reflection Fourier transform infrared spectroscopy using a single-bounce diamond internal reflection element. Hence, the utility of innovative diamond thin-film-waveguide-based sensors coupled with quantum cascade laser light sources has been confirmed as an innovative analytical tool, which may be used in a wide range of application scenarios, ranging from environmental to medical sensing, taking advantage of the robustness and inertness of nanocrystalline diamond.
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Affiliation(s)
- Andrea Teuber
- Institute of Analytical and Bioanalytical Chemistry, University of Ulm, Ulm 89081, Germany
| | - Giada Caniglia
- Institute of Analytical and Bioanalytical Chemistry, University of Ulm, Ulm 89081, Germany
| | | | | | - Christine Kranz
- Institute of Analytical and Bioanalytical Chemistry, University of Ulm, Ulm 89081, Germany
| | - Boris Mizaikoff
- Institute of Analytical and Bioanalytical Chemistry, University of Ulm, Ulm 89081, Germany
- Hahn-Schickard, Ulm 89077, Germany
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Barik AK, M SP, Lukose J, Upadhya R, Pai MV, Kartha VB, Chidangil S. In vivo spectroscopy: optical fiber probes for clinical applications. Expert Rev Med Devices 2022; 19:657-675. [PMID: 36175393 DOI: 10.1080/17434440.2022.2130046] [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: 11/04/2022]
Abstract
INTRODUCTION Fiber optic probe based in-vivo spectroscopy techniques are fast and highly objective methods for intraoperative diagnoses and minimally invasive surgical interventions for all procedures where endoscopic observations are carried out for cancers of different types. The Raman spectral features provide molecular fingerprint-type information and can reveal the subjects' pathological state in label-free manner, making endoscopy multiplexed fiber optic probe-based devices with the potential for translation from bench to bedside for routine applications. AREAS COVERED This review provides a general overview of different fiber-optic probes for in-vivo measurements with emphasis on Raman spectroscopy for biomedical application. Various aspects such as fiber-optic probe, radiation source, detector, and spectrometer for extracting optimum spectral features have also been discussed. EXPERT OPINION : Optical spectroscopy-based fiber probe systems with "Chip-on-Tip" technology, combined with machine learning, can in the near future, become a complimentary diagnostic tool to magnetic resonance imaging (MRI), computed tomography (CT) scan, ultrasound, etc. Hyperspectral imaging and fluorescence-based devices are in the advanced stage of technology readiness level (TRL), and with advances in lasers and miniature spectroscopy systems, probe-based Raman devices are also coming up.
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Affiliation(s)
- Ajaya Kumar Barik
- Centre of Excellence for Biophotonics, Department of Atomic and Molecular Physics, Manipal Academy of Higher Education -576104, Manipal, India
| | - Sanoop Pavithran M
- Centre of Excellence for Biophotonics, Department of Atomic and Molecular Physics, Manipal Academy of Higher Education -576104, Manipal, India
| | - Jijo Lukose
- Centre of Excellence for Biophotonics, Department of Atomic and Molecular Physics, Manipal Academy of Higher Education -576104, Manipal, India
| | - Rekha Upadhya
- Department of Obstetrics and Gynaecology, Kasturba Medical College, Manipal, Manipal Academy of Higher Education -576104, Manipal, India
| | - Muralidhar V Pai
- Department of Obstetrics and Gynaecology, Kasturba Medical College, Manipal, Manipal Academy of Higher Education -576104, Manipal, India
| | - V B Kartha
- Centre of Excellence for Biophotonics, Department of Atomic and Molecular Physics, Manipal Academy of Higher Education -576104, Manipal, India
| | - Santhosh Chidangil
- Centre of Excellence for Biophotonics, Department of Atomic and Molecular Physics, Manipal Academy of Higher Education -576104, Manipal, India
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Madurani KA, Suprapto, Yudha Syahputra M, Puspita I, Furqoni AH, Puspasari L, Rosyidah H, Hatta AM, Juniastuti, Lusida MI, Tominaga M, Kurniawan F. Fluorescence spectrophotometry for COVID-19 determination in clinical swab samples. ARAB J CHEM 2022; 15:104020. [PMID: 35664893 PMCID: PMC9150911 DOI: 10.1016/j.arabjc.2022.104020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Accepted: 05/25/2022] [Indexed: 11/29/2022] Open
Abstract
Considering the limitations of the assays currently available for the detection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and its emerging variants, a simple and rapid method using fluorescence spectrophotometry was developed to detect coronavirus disease 2019 (COVID-19). Forty clinical swab samples were collected from the nasopharyngeal and oropharyngeal cavities of COVID-19-positive and -negative. Each sample was divided into two parts. The first part of the samples was analyzed using reverse transcription-polymerase chain reaction (RT-qPCR) as the control method to identify COVID-19-positive and -negative samples. The second part of the samples was analyzed using fluorescence spectrophotometry. Fluorescence measurements were performed at excitation and emission wavelengths ranging from 200 to 800 nm. Twenty COVID-19-positive samples and twenty COVID-19-negative samples were detected based on RT-qPCR results. The fluorescence spectrum data indicated that the COVID-19-positive and -negative samples had significantly different characteristics. All positive samples could be distinguished from negative samples by fluorescence spectrophotometry. Principal component analysis showed that COVID-19-positive samples were clustered separately from COVID-19-negative samples. The specificity and accuracy of this experiment reached 100%. Limit of detection (LOD) obtained 42.20 copies/ml (Ct value of 33.65 cycles) for E gene and 63.60 copies/ml (Ct value of 31.36 cycles) for ORF1ab gene. This identification process only required 4 min. Thus, this technique offers an efficient and accurate method to identify an individual with active SARS-CoV-2 infection and can be easily adapted for the early investigation of COVID-19, in general.
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Affiliation(s)
- Kartika A Madurani
- Laboratory of Instrumentation and Analytical Science, Chemistry Department, Faculty of Science and Data Analytics, Institut Teknologi Sepuluh Nopember, Surabaya 60111, Indonesia
| | - Suprapto
- Laboratory of Instrumentation and Analytical Science, Chemistry Department, Faculty of Science and Data Analytics, Institut Teknologi Sepuluh Nopember, Surabaya 60111, Indonesia
| | - Muhammad Yudha Syahputra
- Laboratory of Instrumentation and Analytical Science, Chemistry Department, Faculty of Science and Data Analytics, Institut Teknologi Sepuluh Nopember, Surabaya 60111, Indonesia
| | - Ika Puspita
- Photonics Engineering Laboratory, Department of Engineering Physics, Faculty of Industrial Technology and Systems Engineering, Institut Teknologi Sepuluh Nopember, Surabaya 60111, Indonesia
| | - Abdul Hadi Furqoni
- Human Genetic Laboratory, Institute of Tropical Disease, Airlangga University, Surabaya 60115, Indonesia
| | - Listya Puspasari
- Laboratory of Instrumentation and Analytical Science, Chemistry Department, Faculty of Science and Data Analytics, Institut Teknologi Sepuluh Nopember, Surabaya 60111, Indonesia
| | - Hafildatur Rosyidah
- Laboratory of Instrumentation and Analytical Science, Chemistry Department, Faculty of Science and Data Analytics, Institut Teknologi Sepuluh Nopember, Surabaya 60111, Indonesia
| | - Agus Muhamad Hatta
- Photonics Engineering Laboratory, Department of Engineering Physics, Faculty of Industrial Technology and Systems Engineering, Institut Teknologi Sepuluh Nopember, Surabaya 60111, Indonesia
| | - Juniastuti
- Faculty of Medicine, Airlangga University, Surabaya 60131, Indonesia.,Institute of Tropical Disease, Airlangga University, Surabaya 60115, Indonesia
| | - Maria Inge Lusida
- Faculty of Medicine, Airlangga University, Surabaya 60131, Indonesia.,Institute of Tropical Disease, Airlangga University, Surabaya 60115, Indonesia
| | - Masato Tominaga
- Department of Chemistry and Applied Chemistry, Graduate School of Science and Engineering, Saga University, Saga 840-8502, Japan
| | - Fredy Kurniawan
- Laboratory of Instrumentation and Analytical Science, Chemistry Department, Faculty of Science and Data Analytics, Institut Teknologi Sepuluh Nopember, Surabaya 60111, Indonesia
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Windberger U, Baroni P, Noirez L. Capillary-size flow of human blood plasma: Revealing hidden elasticity and scale dependence. J Biomed Mater Res A 2021; 110:298-303. [PMID: 34351058 DOI: 10.1002/jbm.a.37286] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 07/17/2021] [Accepted: 07/21/2021] [Indexed: 11/11/2022]
Abstract
The dynamical mechanical analysis of blood generally uses models inspired by conventional flows, assuming scale-independent homogeneous flows and without considering fluid-surface boundary interactions. The present experimental study highlights the relevance of using an approach in line with physiological reality providing a strong interaction between the fluid and the boundary interface. New dynamic properties of human blood plasma are found: a finite shear elastic response (solid-like property) is identified in nearly static conditions, which also depends on the scale (being reinforced at small scales). The elastic behavior is confirmed by the induction, without heat transfer, of local hot and cold thermodynamic states evidencing a thermo-mechanical coupling in blood plasma so far known only in elastic materials. This finding opens new routes for medical diagnosis and device fabrication.
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Affiliation(s)
- Ursula Windberger
- Center for Biomedical Research, Decentralized Biomedical Facilities, Medical University Vienna, Vienna, Austria
| | - Patrick Baroni
- Laboratoire Léon Brillouin (CEA-CNRS), University of Paris-Saclay, Gif-sur-Yvette, France
| | - Laurence Noirez
- Laboratoire Léon Brillouin (CEA-CNRS), University of Paris-Saclay, Gif-sur-Yvette, France
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Voronina L, Leonardo C, Mueller‐Reif JB, Geyer PE, Huber M, Trubetskov M, Kepesidis KV, Behr J, Mann M, Krausz F, Žigman M. Molecular Origin of Blood‐Based Infrared Spectroscopic Fingerprints**. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202103272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Liudmila Voronina
- Department of Physics Ludwig Maximilian University of Munich 85748 Garching Germany
- Max Planck Institute of Quantum Optics 85748 Garching Germany
| | - Cristina Leonardo
- Department of Physics Ludwig Maximilian University of Munich 85748 Garching Germany
- Max Planck Institute of Quantum Optics 85748 Garching Germany
| | - Johannes B. Mueller‐Reif
- Department of Proteomics and Signal Transduction Max Planck Institute of Biochemistry 82152 Martinsried Germany
- OmicEra Diagnostics GmbH 82152 Planegg Germany
| | - Philipp E. Geyer
- Department of Proteomics and Signal Transduction Max Planck Institute of Biochemistry 82152 Martinsried Germany
- Novo Nordisk Foundation Center for Protein Research Faculty of Health Sciences University of Copenhagen 2200 Copenhagen Denmark
- OmicEra Diagnostics GmbH 82152 Planegg Germany
| | - Marinus Huber
- Department of Physics Ludwig Maximilian University of Munich 85748 Garching Germany
- Max Planck Institute of Quantum Optics 85748 Garching Germany
| | | | - Kosmas V. Kepesidis
- Department of Physics Ludwig Maximilian University of Munich 85748 Garching Germany
| | - Jürgen Behr
- Comprehensive Pneumology Center Department of Internal Medicine V Clinic of the Ludwig Maximilians University Munich (LMU), Member of the German Center for Lung Research Germany
| | - Matthias Mann
- Department of Proteomics and Signal Transduction Max Planck Institute of Biochemistry 82152 Martinsried Germany
- Novo Nordisk Foundation Center for Protein Research Faculty of Health Sciences University of Copenhagen 2200 Copenhagen Denmark
| | - Ferenc Krausz
- Department of Physics Ludwig Maximilian University of Munich 85748 Garching Germany
- Max Planck Institute of Quantum Optics 85748 Garching Germany
| | - Mihaela Žigman
- Department of Physics Ludwig Maximilian University of Munich 85748 Garching Germany
- Max Planck Institute of Quantum Optics 85748 Garching Germany
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Voronina L, Leonardo C, Mueller‐Reif JB, Geyer PE, Huber M, Trubetskov M, Kepesidis KV, Behr J, Mann M, Krausz F, Žigman M. Molecular Origin of Blood-Based Infrared Spectroscopic Fingerprints*. Angew Chem Int Ed Engl 2021; 60:17060-17069. [PMID: 33881784 PMCID: PMC8361728 DOI: 10.1002/anie.202103272] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 03/30/2021] [Indexed: 12/17/2022]
Abstract
Infrared spectroscopy of liquid biopsies is a time- and cost-effective approach that may advance biomedical diagnostics. However, the molecular nature of disease-related changes of infrared molecular fingerprints (IMFs) remains poorly understood, impeding the method's applicability. Here we probe 148 human blood sera and reveal the origin of the variations in their IMFs. To that end, we supplemented infrared spectroscopy with biochemical fractionation and proteomic profiling, providing molecular information about serum composition. Using lung cancer as an example of a medical condition, we demonstrate that the disease-related differences in IMFs are dominated by contributions from twelve highly abundant proteins-that, if used as a pattern, may be instrumental for detecting malignancy. Tying proteomic to spectral information and machine learning advances our understanding of the infrared spectra of liquid biopsies, a framework that could be applied to probing of any disease.
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Affiliation(s)
- Liudmila Voronina
- Department of PhysicsLudwig Maximilian University of Munich85748GarchingGermany
- Max Planck Institute of Quantum Optics85748GarchingGermany
| | - Cristina Leonardo
- Department of PhysicsLudwig Maximilian University of Munich85748GarchingGermany
- Max Planck Institute of Quantum Optics85748GarchingGermany
| | - Johannes B. Mueller‐Reif
- Department of Proteomics and Signal TransductionMax Planck Institute of Biochemistry82152MartinsriedGermany
- OmicEra Diagnostics GmbH82152PlaneggGermany
| | - Philipp E. Geyer
- Department of Proteomics and Signal TransductionMax Planck Institute of Biochemistry82152MartinsriedGermany
- Novo Nordisk Foundation Center for Protein ResearchFaculty of Health SciencesUniversity of Copenhagen2200CopenhagenDenmark
- OmicEra Diagnostics GmbH82152PlaneggGermany
| | - Marinus Huber
- Department of PhysicsLudwig Maximilian University of Munich85748GarchingGermany
- Max Planck Institute of Quantum Optics85748GarchingGermany
| | | | - Kosmas V. Kepesidis
- Department of PhysicsLudwig Maximilian University of Munich85748GarchingGermany
| | - Jürgen Behr
- Comprehensive Pneumology CenterDepartment of Internal Medicine VClinic of the Ludwig Maximilians University Munich (LMU), Member of the German Center for Lung ResearchGermany
| | - Matthias Mann
- Department of Proteomics and Signal TransductionMax Planck Institute of Biochemistry82152MartinsriedGermany
- Novo Nordisk Foundation Center for Protein ResearchFaculty of Health SciencesUniversity of Copenhagen2200CopenhagenDenmark
| | - Ferenc Krausz
- Department of PhysicsLudwig Maximilian University of Munich85748GarchingGermany
- Max Planck Institute of Quantum Optics85748GarchingGermany
| | - Mihaela Žigman
- Department of PhysicsLudwig Maximilian University of Munich85748GarchingGermany
- Max Planck Institute of Quantum Optics85748GarchingGermany
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