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Wojas NA, Tyrode E, Corkery R, Ernstsson M, Wallqvist V, Järn M, Swerin A, Schoelkopf J, Gane PAC, Claesson PM. Calcite Surfaces Modified with Carboxylic Acids (C 2 to C 18): Layer Organization, Wettability, Stability, and Molecular Structural Properties. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:14840-14852. [PMID: 37824837 PMCID: PMC10601537 DOI: 10.1021/acs.langmuir.3c01252] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 08/18/2023] [Indexed: 10/14/2023]
Abstract
A fundamental understanding of the interactions between mineral surfaces and amphiphilic surface modification agents is needed for better control over the production and uses of mineral fillers. Here, we controlled the carboxylic acid layer formation conditions on calcite surfaces with high precision via vapor deposition. The properties of the resulting carboxylic acid layers were analyzed using surface-sensitive techniques, such as atomic force microscopy (AFM), contact angle measurements, angle resolved X-ray photoelectron spectroscopy (XPS), and vibrational sum-frequency spectroscopy. A low wettability was achieved with long hydrocarbon chain carboxylic acids such as stearic acid. The stearic acid layer formed by vapor deposition is initially patchy, but with increasing vapor exposure time, the patches grow and condense into a homogeneous layer with a thickness close to that expected for a monolayer as evaluated by AFM and XPS. The build-up process of the layer occurs more rapidly at higher temperatures due to the higher vapor pressure. The stability of the deposited fatty acid layer in the presence of a water droplet increases with the chain length and packing density in the adsorbed layer. Vibrational sum frequency spectroscopy data demonstrate that the stearic acid monolayers on calcite have their alkyl chains in an all-trans conformation and are anisotropically distributed on the plane of the surface, forming epitaxial monolayers. Vibrational spectra also show that the stearic acid molecules interact with the calcite surface through the carboxylic acid headgroup in both its protonated and deprotonated forms. The results presented provide new molecular insights into the properties of adsorbed carboxylic acid layers on calcite.
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Affiliation(s)
- Natalia A. Wojas
- RISE
Research Institutes of Sweden, Division
of Bioeconomy and Health–Material and Surface Design, Box 5607, SE-114 86 Stockholm, Sweden
- KTH
Royal Institute of Technology, Department
of Chemistry, Teknikringen 30 SE, 11428 Stockholm, Sweden
| | - Eric Tyrode
- KTH
Royal Institute of Technology, Department
of Chemistry, Teknikringen 30 SE, 11428 Stockholm, Sweden
| | - Robert Corkery
- KTH
Royal Institute of Technology, Department
of Chemistry, Teknikringen 30 SE, 11428 Stockholm, Sweden
- Australian
National University Department of Applied Mathematics, Research School of Physics and Engineering, Canberra ACT 0200, Australia
| | - Marie Ernstsson
- RISE
Research Institutes of Sweden, Division
of Bioeconomy and Health–Material and Surface Design, Box 5607, SE-114 86 Stockholm, Sweden
| | - Viveca Wallqvist
- RISE
Research Institutes of Sweden, Division
of Bioeconomy and Health–Material and Surface Design, Box 5607, SE-114 86 Stockholm, Sweden
| | - Mikael Järn
- RISE
Research Institutes of Sweden, Division
of Bioeconomy and Health–Material and Surface Design, Box 5607, SE-114 86 Stockholm, Sweden
| | - Agne Swerin
- Karlstad
University Faculty of Health Science and Technology, Department of Engineering and Chemical Sciences: Chemical Engineering, SE-651 88 Karlstad, Sweden
| | | | - Patrick A. C. Gane
- Aalto University
School of Chemical Engineering, Department
of Bioproducts and Biosystems, P.O. Box
16300, FI-00076 Aalto, Finland
- University
of Belgrade, Faculty of Technology and Metallurgy, Karnegijeva 4, 11200 Belgrade, Serbia
| | - Per M. Claesson
- KTH
Royal Institute of Technology, Department
of Chemistry, Teknikringen 30 SE, 11428 Stockholm, Sweden
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2
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Hafiz S, Xavierselvan M, Gokalp S, Labadini D, Barros S, Duong J, Foster M, Mallidi S. Eutectic Gallium-Indium Nanoparticles for Photodynamic Therapy of Pancreatic Cancer. ACS APPLIED NANO MATERIALS 2022; 5:6125-6139. [PMID: 35655927 PMCID: PMC9150699 DOI: 10.1021/acsanm.1c04353] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Accepted: 04/12/2022] [Indexed: 05/04/2023]
Abstract
Developing a cancer theranostic nanoplatform with diagnosis and treatment capabilities to effectively treat tumors and reduce side effects is of great significance. Herein, we present a drug delivery strategy for photosensitizers based on a new liquid metal nanoplatform that leverages the tumor microenvironment to achieve photodynamic therapeutic effects in pancreatic cancer. Eutectic gallium indium (EGaIn) nanoparticles were successfully conjugated with a water-soluble cancer targeting ligand, hyaluronic acid, and a photosensitizer, benzoporphyrin derivative, creating EGaIn nanoparticles (EGaPs) via a simple green sonication method. The prepared sphere-shaped EGaPs, with a core-shell structure, presented high biocompatibility and stability. EGaPs had greater cellular uptake, manifested targeting competence, and generated significantly higher intracellular ROS. Further, near-infrared light activation of EGaPs demonstrated their potential to effectively eliminate cancer cells due to their single oxygen generation capability. Finally, from in vivo studies, EGaPs caused tumor regression and resulted in 2.3-fold higher necrosis than the control, therefore making a good vehicle for photodynamic therapy. The overall results highlight that EGaPs provide a new way to assemble liquid metal nanomaterials with different ligands for enhanced cancer therapy.
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Affiliation(s)
- Sabrina
S. Hafiz
- Department
of Chemistry, University of Massachusetts
Boston, Boston, Massachusetts 02125, United States
| | - Marvin Xavierselvan
- Department
of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, United States
| | - Sumeyra Gokalp
- Department
of Chemistry, University of Massachusetts
Boston, Boston, Massachusetts 02125, United States
| | - Daniela Labadini
- Department
of Chemistry, University of Massachusetts
Boston, Boston, Massachusetts 02125, United States
| | - Sebastian Barros
- Department
of Chemistry, University of Massachusetts
Boston, Boston, Massachusetts 02125, United States
| | - Jeanne Duong
- Department
of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, United States
| | - Michelle Foster
- Department
of Chemistry, University of Massachusetts
Boston, Boston, Massachusetts 02125, United States
| | - Srivalleesha Mallidi
- Department
of Biomedical Engineering, Tufts University, Medford, Massachusetts 02155, United States
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Mendiratta S, Ali AAA, Hejazi SH, Gates I. Dual Stimuli-Responsive Pickering Emulsions from Novel Magnetic Hydroxyapatite Nanoparticles and Their Characterization Using a Microfluidic Platform. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:1353-1364. [PMID: 33482065 DOI: 10.1021/acs.langmuir.0c02408] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Stimuli-responsive emulsifiers have emerged as a class of smart agents that can permit regulated stabilization and destabilization of emulsions, which is essential for food, cosmetic, pharmaceutical, and petroleum industries. Here, we report the synthesis of novel "smart" hydroxyapatite (HaP) magnetic nanoparticles and their corresponding stimuli-responsive Pickering emulsions and explore their movement under confined spaces using a microfluidic platform. Pickering emulsions prepared with our magnetic stearic acid-functionalized Fe2O3@HaP nanoparticles exhibited pronounced pH-responsive behavior. We observed that the diameter of emulsion droplets decreases with an increase in pH. Swift demulsification was achieved by lowering the pH, whereas the reformation of emulsions was achieved by increasing the pH; this emulsification-demulsification cycling was successful for at least ten cycles. We used a microfluidic platform to test the stability of the emulsions under flowing conditions and their response to a magnetic field. We observed that the emulsion stability was diminished and droplet coalescence was enhanced by the application of the magnetic field. The smart nanoparticles we developed and their HaP-based emulsions present promising materials for pharmaceutical and petroleum industries, where responsive emulsions with controlled stabilities are required.
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Affiliation(s)
- Shruti Mendiratta
- Department of Chemical and Petroleum Engineering, University of Calgary, Calgary T2N 1N4, Canada
| | - Ahmed Atef Ahmed Ali
- Department of Chemical and Petroleum Engineering, University of Calgary, Calgary T2N 1N4, Canada
| | - Seyed Hossein Hejazi
- Department of Chemical and Petroleum Engineering, University of Calgary, Calgary T2N 1N4, Canada
| | - Ian Gates
- Department of Chemical and Petroleum Engineering, University of Calgary, Calgary T2N 1N4, Canada
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Lv C, Tsona NT, Du L. Sea spray aerosol formation: Results on the role of different parameters and organic concentrations from bubble bursting experiments. CHEMOSPHERE 2020; 252:126456. [PMID: 32182508 DOI: 10.1016/j.chemosphere.2020.126456] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2020] [Revised: 03/04/2020] [Accepted: 03/08/2020] [Indexed: 05/13/2023]
Abstract
Submicron sea spray aerosol (SSA) particles play an essential role in atmospheric chemical processes and the Earth's radiative balance. In this study, different combinations of NaCl, MgSO4, malonic acid (MA), d-fructose and sodium malonate were used to explore the effect of MA on submicron SSA generation. SSA particles were produced at room temperature by bubble bursting from an adjustable home-built SSA generator with sintered glass filters. We found that MA could promote the generation of SSA particles and make the geometric mean diameter (GMD) to decrease for MA concentrations ranging between 8 and 32 mM and then, to increase for MA concentrations in the range of 64-160 mM. d-fructose could improve the generation of SSA with increasing GMD. Interestingly, sodium malonate could significantly enhance the production of SSA, with the change of morphology. Besides, different parameters including flow rate, underwater depth, pore size and size span of sintered glass filter and salinity of water were tested to obtain the characterization of our self-made adjustable SSA generator. Three modes could be found among different SSA generation methods, and they exhibited an obvious accumulation mode around 100 nm. The SSA generation under different conditions was compared with oceanic measurements from the literature, which showed that the sintered glass filter has advantages in generating submicron SSA from film drops.
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Affiliation(s)
- Chen Lv
- Environment Research Institute, Shandong University, Binhai Road 72, Qingdao 266237, China
| | - Narcisse T Tsona
- School of Life Science, Shandong University, Binhai Road 72, Qingdao 266237, China
| | - Lin Du
- Environment Research Institute, Shandong University, Binhai Road 72, Qingdao 266237, China.
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Hafiz SS, Labadini D, Riddell R, Wolff EP, Xavierselvan M, Huttunen PK, Mallidi S, Foster M. Surfaces and Interfaces of Liquid Metal Core-Shell Nanoparticles under the Microscope. PARTICLE & PARTICLE SYSTEMS CHARACTERIZATION : MEASUREMENT AND DESCRIPTION OF PARTICLE PROPERTIES AND BEHAVIOR IN POWDERS AND OTHER DISPERSE SYSTEMS 2020; 37:1900469. [PMID: 33071465 PMCID: PMC7567332 DOI: 10.1002/ppsc.201900469] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Eutectic gallium indium (EGaIn), a Ga-based liquid metal alloy holds great promise for designing next generation core-shell nanoparticles (CSNs). A shearing assisted ligand-stabilization method has shown promise as a synthetic method for these CSNs; however, determining the role of the ligand on stabilization demands an understanding of the surface chemistry of the ligand-nanoparticle interface. EGaIn CSNs have been created functionalized with aliphatic carboxylates of different chain length allowing a fundamental investigation on ligand stabilization of EGaIn CSNs. Raman and diffuse reflectance Fourier transform spectroscopies (DRIFTS) confirm reaction of the ligand with the oxide shell of the EGaIn nanoparticles. Changing the length of the alkyl chain in the aliphatic carboxylates (C2-C18) may influence the size and structural stability of EGaIn CSNs, which is easily monitored using atomic force microscopy (AFM). No matter how large the carboxylate ligand, there is no obvious effect on the size of the EGaIn CSNs, except the particle size got more uniform when coated with longer chain carboxylates. The AFM force distance (F-D) measurements are used to measure the stiffness of the carboxylate coated EGaIn CSN. In corroboration with DRIFTS analysis, the stiffness studies show that the alkyl chains undergo conformational changes upon compression.
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Affiliation(s)
- Sabrina S. Hafiz
- Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Blvd., Boston, Massachusetts 02125, United States
| | - Daniela Labadini
- Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Blvd., Boston, Massachusetts 02125, United States
| | - Ryan Riddell
- Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Blvd., Boston, Massachusetts 02125, United States
| | - Erich P. Wolff
- Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Blvd., Boston, Massachusetts 02125, United States
| | - Marvin Xavierselvan
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02114, United States
| | - Paul K. Huttunen
- Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Blvd., Boston, Massachusetts 02125, United States
| | - Srivalleesha Mallidi
- Wellman Center for Photomedicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02114, United States
- Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, MA 02155, United States
| | - Michelle Foster
- Department of Chemistry, University of Massachusetts Boston, 100 Morrissey Blvd., Boston, Massachusetts 02125, United States
- ; 617-287-6096
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6
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Abstract
Airborne particles are very dynamic and highly reactive components of the Earth's atmosphere. Their high surface area and water content provide a unique reaction environment for multiphase chemistry that continually modifies particle composition and properties that consequently impact air quality as well as concentrations of gas-phase species. By absorbing and scattering solar and terrestrial radiation, particles directly influence the planet's radiative balance. Their indirect effects include modifying the nucleation, lifetime, and physical properties of clouds. Due to the sensitivity of the atmospheric environment to all these variables, fundamental studies of chemical transformations of atmospheric particles, their sources, continuously evolving composition, and physical properties are of highest research priority. Accurate descriptions of particles and their effects in the atmosphere require comprehensive information not only on the particle-type populations and their size distributions and concentrations, but also on the diversity and the spatial heterogeneity of chemical components within individual particles. Developments and applications of modern chemical imaging approaches for off-line characterization of atmospheric particles have been at the forefront of modern experimental studies and have resulted in a transformative impact in atmospheric chemistry and physics. This Account presents a synopsis of recent advances in chemical imaging of atmospheric particles collected on substrates during field and laboratory experiments. The unique advantage of chemical imaging methods is that they simultaneously provide two analytical measurements: imaging of particles to assess variability in their individual sizes and morphology, as well as particle-specific speciation of their composition and spatial heterogeneity of different chemical components within individual particles. We also highlight analytical chemistry approaches that enable chemical imaging of particles with different levels of elemental and molecular specificity, including applications of multimodal methodologies where the same or similar groups of particles are probed by two or more complementary techniques. These approaches provide unique experimental insights on the nature and sources of particles, understanding their physical properties, atmospheric reactivity, and transformations. Chemical imaging data provide unique experimental input for atmospheric models that simulate aging and changes in particle-type populations, internal composition, and their associated optical and cloud forming properties. We highlight applications of chemical imaging in selected recent studies, discuss their existing limitations, and forecast future research directions for this area.
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Affiliation(s)
- Alexander Laskin
- Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States
| | - Ryan C. Moffet
- Meteorology and Air Quality Measurements, Sonoma Technology, Inc., Petaluma, California 94954, United States
| | - Mary K. Gilles
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
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Tirella PN, Craig RL, Tubbs DB, Olson NE, Lei Z, Ault AP. Extending surface enhanced Raman spectroscopy (SERS) of atmospheric aerosol particles to the accumulation mode (150-800 nm). ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2018; 20:1570-1580. [PMID: 30124713 DOI: 10.1039/c8em00276b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Due to their small size, measurements of the complex composition of atmospheric aerosol particles and their surfaces are analytically challenging. This is particularly true for microspectroscopic methods, where it can be difficult to optically identify individual particles smaller than the diffraction limit of visible light (∼350 nm) and measure their vibrational modes. Recently, surface enhanced Raman spectroscopy (SERS) has been applied to the study of aerosol particles, allowing for detection and characterization of previously undistinguishable vibrational modes. However, atmospheric particles analyzed via SERS have primarily been >1 μm to date, much larger than the diameter of the most abundant atmospheric aerosols (∼100 nm). To push SERS towards more relevant particle sizes, a simplified approach involving Ag foil substrates was developed. Both ambient particles and several laboratory-generated model aerosol systems (polystyrene latex spheres (PSLs), ammonium sulfate, and sodium nitrate) were investigated to determine SERS enhancements. SERS spectra of monodisperse, model aerosols between 400-800 nm were compared with non-SERS enhanced spectra, yielding average enhancement factors of 102 for both inorganic and organic vibrational modes. Additionally, SERS-enabled detection of 150 nm size-selected ambient particles represent the smallest individual aerosol particles analyzed by Raman microspectroscopy to date, and the first time atmospheric particles have been measured at sizes approaching the atmospheric number size distribution mode. SERS-enabled detection and identification of vibrational modes in smaller, more atmospherically-relevant particles has the potential to improve understanding of aerosol composition and surface properties, as well as their impact on heterogeneous and multiphase reactions involving aerosol surfaces.
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Affiliation(s)
- Peter N Tirella
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, USA.
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8
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Huang D, Hua X, Xiu GL, Zheng YJ, Yu XY, Long YT. Secondary ion mass spectrometry: The application in the analysis of atmospheric particulate matter. Anal Chim Acta 2017; 989:1-14. [PMID: 28915935 DOI: 10.1016/j.aca.2017.07.042] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Revised: 07/12/2017] [Accepted: 07/18/2017] [Indexed: 12/13/2022]
Abstract
Currently, considerable attention has been paid to atmospheric particulate matter (PM) investigation due to its importance in human health and global climate change. Surface characterization, single particle analysis and depth profiling of PM is important for a better understanding of its formation processes and predicting its impact on the environment and human being. Secondary ion mass spectrometry (SIMS) is a surface technique with high surface sensitivity, high spatial resolution chemical imaging and unique depth profiling capabilities. Recent research shows that SIMS has great potential in analyzing both surface and bulk chemical information of PM. In this review, we give a brief introduction of SIMS working principle and survey recent applications of SIMS in PM characterization. Particularly, analyses from different types of PM sources by various SIMS techniques were discussed concerning their advantages and limitations. The future development and needs of SIMS in atmospheric aerosol measurement are proposed with a perspective in broader environmental sciences.
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Affiliation(s)
- Di Huang
- State Environmental Protection Key Lab of Environmental Risk Assessment and Control on Chemical Processes, School of Resources & Environmental Engineering, East China University of Science and Technology, Shanghai 200237, PR China
| | - Xin Hua
- Key Laboratory for Advanced Materials and School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China.
| | - Guang-Li Xiu
- State Environmental Protection Key Lab of Environmental Risk Assessment and Control on Chemical Processes, School of Resources & Environmental Engineering, East China University of Science and Technology, Shanghai 200237, PR China.
| | - Yong-Jie Zheng
- College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar 161006, China
| | - Xiao-Ying Yu
- Earth and Biological Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA 99354, USA.
| | - Yi-Tao Long
- Key Laboratory for Advanced Materials and School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China
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Lovrić J, Duflot D, Monnerville M, Toubin C, Briquez S. Water-Induced Organization of Palmitic Acid at the Surface of a Model Sea Salt Particle: A Molecular Dynamics Study. J Phys Chem A 2016; 120:10141-10149. [DOI: 10.1021/acs.jpca.6b07792] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Josip Lovrić
- Laboratoire de
Physique des Lasers, Atomes et Molécules (PhLAM) CNRS, UMR
8523, Univ. Lille, F-59000 Lille, France
| | - Denis Duflot
- Laboratoire de
Physique des Lasers, Atomes et Molécules (PhLAM) CNRS, UMR
8523, Univ. Lille, F-59000 Lille, France
| | - Maurice Monnerville
- Laboratoire de
Physique des Lasers, Atomes et Molécules (PhLAM) CNRS, UMR
8523, Univ. Lille, F-59000 Lille, France
| | - Céline Toubin
- Laboratoire de
Physique des Lasers, Atomes et Molécules (PhLAM) CNRS, UMR
8523, Univ. Lille, F-59000 Lille, France
| | - Stéphane Briquez
- Laboratoire de
Physique des Lasers, Atomes et Molécules (PhLAM) CNRS, UMR
8523, Univ. Lille, F-59000 Lille, France
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