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Spellauge M, Doñate-Buendía C, Barcikowski S, Gökce B, Huber HP. Comparison of ultrashort pulse ablation of gold in air and water by time-resolved experiments. LIGHT, SCIENCE & APPLICATIONS 2022; 11:68. [PMID: 35322802 PMCID: PMC8943017 DOI: 10.1038/s41377-022-00751-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 01/31/2022] [Accepted: 02/22/2022] [Indexed: 06/14/2023]
Abstract
Laser ablation in liquids is a highly interdisciplinary method at the intersection of physics and chemistry that offers the unique opportunity to generate surfactant-free and stable nanoparticles from virtually any material. Over the last decades, numerous experimental and computational studies aimed to reveal the transient processes governing laser ablation in liquids. Most experimental studies investigated the involved processes on timescales ranging from nanoseconds to microseconds. However, the ablation dynamics occurring on a sub-nanosecond timescale are of fundamental importance, as the conditions under which nanoparticles are generated are established within this timeframe. Furthermore, experimental investigations of the early timescales are required to test computational predictions. We visualize the complete spatiotemporal picosecond laser-induced ablation dynamics of gold immersed in air and water using ultrafast pump-probe microscopy. Transient reflectivity measurements reveal that the water confinement layer significantly influences the ablation dynamics on the entire investigated timescale from picoseconds to microseconds. The influence of the water confinement layer includes the electron injection and subsequent formation of a dense plasma on a picosecond timescale, the confinement of ablation products within hundreds of picoseconds, and the generation of a cavitation bubble on a nanosecond timescale. Moreover, we are able to locate the temporal appearance of secondary nanoparticles at about 600 ps after pulse impact. The results support computational predictions and provide valuable insight into the early-stage ablation dynamics governing laser ablation in liquids.
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Affiliation(s)
- Maximilian Spellauge
- Department of Applied Sciences and Mechatronics, Munich University of Applied Sciences, Lothstraße 34, 80335, Munich, Germany
- Technical Chemistry I and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, 45141, Essen, Germany
| | - Carlos Doñate-Buendía
- Technical Chemistry I and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, 45141, Essen, Germany
- Materials Science and Additive Manufacturing, School of Mechanical Engineering and Safety Engineering, University of Wuppertal, 42119, Wuppertal, Germany
| | - Stephan Barcikowski
- Technical Chemistry I and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, 45141, Essen, Germany
| | - Bilal Gökce
- Technical Chemistry I and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, 45141, Essen, Germany.
- Materials Science and Additive Manufacturing, School of Mechanical Engineering and Safety Engineering, University of Wuppertal, 42119, Wuppertal, Germany.
| | - Heinz P Huber
- Department of Applied Sciences and Mechatronics, Munich University of Applied Sciences, Lothstraße 34, 80335, Munich, Germany.
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Bebon R, Majee A. Electrostatic pair-interaction of nearby metal or metal-coated colloids at fluid interfaces. J Chem Phys 2020; 153:044903. [PMID: 32752694 DOI: 10.1063/5.0013298] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
In this paper, we theoretically study the electrostatic interaction between a pair of identical colloids with constant surface potentials sitting in close vicinity next to each other at the fluid interface. By employing a simplified yet reasonable model system, the problem is solved within the framework of classical density functional theory and linearized as well as nonlinear Poisson-Boltzmann (PB) theory. Apart from providing a sound theoretical framework generally applicable to any such problem, our novel findings, all of which contradict common beliefs, include the following: first, quantitative and qualitative differences between the interactions obtained within the linear and the nonlinear PB theories; second, the importance of the electrostatic interaction between the omnipresent three-phase contact lines in interfacial systems; and, third, the occurrence of an attractive electrostatic interaction between a pair of identical metal colloids. The unusual attraction we report largely stems from an attractive line interaction, which although scales linearly with the size of the particle can compete with the surface interactions and can be strong enough to alter the nature of the total electrostatic interaction. Our results should find applications in metal or metal-coated particle-stabilized emulsions where densely packed particle arrays are not only frequently observed but also sometimes required.
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Affiliation(s)
- Rick Bebon
- Max Planck Institute for Intelligent Systems, Stuttgart, Germany and IV. Institute for Theoretical Physics, University of Stuttgart, Stuttgart, Germany
| | - Arghya Majee
- Max Planck Institute for Intelligent Systems, Stuttgart, Germany and IV. Institute for Theoretical Physics, University of Stuttgart, Stuttgart, Germany
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Spatial-Tunable Au Nanoparticle Functionalized Si Nanorods Arrays for Surface Enhanced Raman Spectroscopy. NANOMATERIALS 2020; 10:nano10071317. [PMID: 32635490 PMCID: PMC7407171 DOI: 10.3390/nano10071317] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 06/22/2020] [Accepted: 07/03/2020] [Indexed: 01/01/2023]
Abstract
In this study, hexagonal-packed Si nanorods (SiNRs) arrays were fabricated and conjugated with Au nanoparticles (AuNPs) in different spatial distributions for surface-enhanced Raman spectroscopy (SERS). The AuNPs were functionalized on the bottom of SiNRs (B-SiNRs@AuNPs), top of SiNRs (T-SiNRs@AuNPs) and sides of SiNRs (S-SiNRs@AuNPs), respectively. Our results demonstrated that the SiNRs conjugated with AuNPs on the sides achieved high reproducibility in detection of R6G molecules, while the AuNPs on the top of the SiNRs obtained the strongest Raman enhancement. In addition, the substrate with S-SiNRs@AuNPs obtained the highest spatial uniformity of enhancement. The finite-difference time-domain simulation gave further evidence that the incident light could be confined in the space of SiNRs arrays and yield a zero-gap enhancement coupled with the AuNPs. Our study provided a spatially tunable SiNRs@AuNPs substrate with high sensitivity and reproducibility in molecular detection.
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Wei X, Wang Y, Cao Z, Mbemba D, Iqbal A, Wu Z. Large Aberration Correction by Magnetic Fluid Deformable Mirror with Model-Based Wavefront Sensorless Control Algorithm. Int J Mol Sci 2019; 20:E3697. [PMID: 31357727 PMCID: PMC6695980 DOI: 10.3390/ijms20153697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 07/23/2019] [Accepted: 07/24/2019] [Indexed: 11/16/2022] Open
Abstract
Magnetic fluid is a stable colloidal suspension of nano-sized, single-domain ferri/ferromagnetic particles dispersed in a liquid carrier. The liquid can be magnetized by the ferromagnetic particles aligned with the external magnetic field, which can be used as a wavefront corrector to correct the large aberrations up to more than 100 µm in adaptive optics (AO) systems. Since the measuring range of the wavefront sensor is normally small, the application of the magnetic fluid deformable mirror (MFDM) is limited with the WFS based AO system. In this paper, based on the MFDM model and the relationship between the second moment (SM) of the aberration gradients and the far-field intensity distribution, a model-based wavefront sensorless (WFSless) control algorithm is proposed for the MFDM. The correction performance of MFDM using the model-based control algorithm is evaluated in a WFSless AO system setup with a prototype MFDM, where a laser beam with unknown aberrations is supposed to produce a focused spot on the CCD. Experimental results show that the MFDM can be used to effectively compensate for unknown aberrations in the imaging system with the proposed model-based control algorithm.
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Affiliation(s)
- Xiang Wei
- Department of Precision Mechanical Engineering, Shanghai University, Shanghai 200444, China
| | - Yuanyuan Wang
- Department of Precision Mechanical Engineering, Shanghai University, Shanghai 200444, China
| | - Zhan Cao
- Department of Precision Mechanical Engineering, Shanghai University, Shanghai 200444, China
| | - Dziki Mbemba
- Department of Precision Mechanical Engineering, Shanghai University, Shanghai 200444, China
| | - Azhar Iqbal
- Dunlap Institute for Astronomy and Astrophysics, University of Toronto, Toronto, ON M5S 3H4, Canada
| | - Zhizheng Wu
- Department of Precision Mechanical Engineering, Shanghai University, Shanghai 200444, China.
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Cui Y, Wang F, Zhu J, Wu W, Qin Y, Zhang X. Preparation of large-scale and angle-independent structural colors by additive of black polypyrrole. J Colloid Interface Sci 2018; 531:609-617. [DOI: 10.1016/j.jcis.2018.07.094] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 07/11/2018] [Accepted: 07/23/2018] [Indexed: 11/27/2022]
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Shi R, Liu X, Ying Y. Facing Challenges in Real-Life Application of Surface-Enhanced Raman Scattering: Design and Nanofabrication of Surface-Enhanced Raman Scattering Substrates for Rapid Field Test of Food Contaminants. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:6525-6543. [PMID: 28920678 DOI: 10.1021/acs.jafc.7b03075] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Surface-enhanced Raman scattering (SERS) is capable of detecting a single molecule with high specificity and has become a promising technique for rapid chemical analysis of agricultural products and foods. With a deeper understanding of the SERS effect and advances in nanofabrication technology, SERS is now on the edge of going out of the laboratory and becoming a sophisticated analytical tool to fulfill various real-world tasks. This review focuses on the challenges that SERS has met in this progress, such as how to obtain a reliable SERS signal, improve the sensitivity and specificity in a complex sample matrix, develop simple and user-friendly practical sensing approach, reduce the running cost, etc. This review highlights the new thoughts on design and nanofabrication of SERS-active substrates for solving these challenges and introduces the recent advances of SERS applications in this area. We hope that our discussion will encourage more researches to address these challenges and eventually help to bring SERS technology out of the laboratory.
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Affiliation(s)
- Ruyi Shi
- College of Biosystems Engineering and Food Science , Zhejiang University , 866 Yuhangtang Road , Hangzhou , Zhejiang 310058 , China
| | - Xiangjiang Liu
- College of Biosystems Engineering and Food Science , Zhejiang University , 866 Yuhangtang Road , Hangzhou , Zhejiang 310058 , China
| | - Yibin Ying
- College of Biosystems Engineering and Food Science , Zhejiang University , 866 Yuhangtang Road , Hangzhou , Zhejiang 310058 , China
- Zhejiang A&F University , 88 Huanchengdong Road , Hangzhou , Zhejiang 311300 , China
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Abstract
In this paper, a new type of magnetic fluid deformable mirror (MFDM) with a two-layer layout of actuators is proposed to improve the correction performance for full-order aberrations with a high spatial resolution. The shape of the magnetic fluid surface is controlled by the combined magnetic field generated by the Maxwell coil and the two-layer array of miniature coils. The upper-layer actuators which have a small size and high density are used to compensate for small-amplitude high-order aberrations and the lower-layer actuators which have a big size and low density are used to correct large-amplitude low-order aberrations. The analytical model of this deformable mirror is established and the aberration correction performance is verified by the experimental results. As a new kind of wavefront corrector, the MFDM has major advantages such as large stroke, low cost, and easy scalability and fabrication.
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Guo P, Huang X, Li L, Zhao S. Interfacial self-assembly approach of plasmonic nanostructures for efficient SERS and recyclable catalysts applications. Chem Res Chin Univ 2017. [DOI: 10.1007/s40242-017-6034-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Zhang XY, Xu JJ, Wu JY, Shan F, Ma XD, Chen YZ, Zhang T. Seeds triggered massive synthesis and multi-step room temperature post-processing of silver nanoink—application for paper electronics. RSC Adv 2017. [DOI: 10.1039/c6ra27163d] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Ink synthesis, room-temperature post-processing and applications for flexible 3D paper electronics.
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Affiliation(s)
- Xiao-Yang Zhang
- Joint International Research Laboratory of Information Display and Visualization
- School of Electronic Science and Engineering
- Southeast University
- Nanjing
- People's Republic of China
| | - Jia-Jia Xu
- Joint International Research Laboratory of Information Display and Visualization
- School of Electronic Science and Engineering
- Southeast University
- Nanjing
- People's Republic of China
| | - Jing-Yuan Wu
- Joint International Research Laboratory of Information Display and Visualization
- School of Electronic Science and Engineering
- Southeast University
- Nanjing
- People's Republic of China
| | - Feng Shan
- Joint International Research Laboratory of Information Display and Visualization
- School of Electronic Science and Engineering
- Southeast University
- Nanjing
- People's Republic of China
| | - Xiao-Dan Ma
- Joint International Research Laboratory of Information Display and Visualization
- School of Electronic Science and Engineering
- Southeast University
- Nanjing
- People's Republic of China
| | - Yu-Zhang Chen
- Joint International Research Laboratory of Information Display and Visualization
- School of Electronic Science and Engineering
- Southeast University
- Nanjing
- People's Republic of China
| | - Tong Zhang
- Joint International Research Laboratory of Information Display and Visualization
- School of Electronic Science and Engineering
- Southeast University
- Nanjing
- People's Republic of China
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Giner-Casares JJ, Reguera J. Directed self-assembly of inorganic nanoparticles at air/liquid interfaces. NANOSCALE 2016; 8:16589-16595. [PMID: 27722594 DOI: 10.1039/c6nr05054a] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Inorganic nanoparticles (NPs) appear as the forefront functional structure in nanotechnology. The preparation of functional materials based on inorganic NPs requires their assembly onto well-defined structures. Within this context, self-assembly at air-liquid interfaces is probably the best candidate for a universal procedure for active materials composed of assembled NPs. The detailed in situ mechanism of the lateral self-assembly and vertical organization of NPs at air-liquid interfaces is still unknown despite its extended use. The most common and promising methods for addressing this open issue are reviewed herein. The self-assembled films can be used in situ or further be transferred to solid substrates as the main constituents of novel functional materials. Plasmonic NPs at interfaces are highly interesting, given the broad range of applications of the plasmonic field, and will be discussed more in detail.
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Affiliation(s)
- Juan J Giner-Casares
- Institute of Fine Chemistry and Nanochemistry, Department of Physical Chemistry and Applied Thermodynamics, University of Córdoba, Campus Universitario de Rabanales, 14014, Córdoba, Spain.
| | - Javier Reguera
- CIC biomaGUNE, Paseo de Miramón 182, 20009 Donostia-San Sebastián, Spain. and Ikerbasque, Basque Foundation for Science, 48013 Bilbao, Spain and Biomedical Research Networking Center in Bioengineering Biomaterials and Nanomedicine (CIBER-BBN), 50018 Aragon, Spain
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11
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Smirnov E, Peljo P, Scanlon MD, Gumy F, Girault HH. Self-healing gold mirrors and filters at liquid-liquid interfaces. NANOSCALE 2016; 8:7723-7737. [PMID: 27001646 DOI: 10.1039/c6nr00371k] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The optical and morphological properties of lustrous metal self-healing liquid-like nanofilms were systematically studied for different applications (e.g., optical mirrors or filters). These nanofilms were formed by a one-step self-assembly methodology of gold nanoparticles (AuNPs) at immiscible water-oil interfaces, previously reported by our group. We investigated a host of experimental variables and herein report their influence on the optical properties of nanofilms: AuNP mean diameter, interfacial AuNP surface coverage, nature of the organic solvent, and nature of the lipophilic organic molecule that caps the AuNPs in the interfacial nanofilm. To probe the interfacial gold nanofilms we used in situ (UV-vis-NIR spectroscopy and optical microscopy) as well as ex situ (SEM and TEM of interfacial gold nanofilms transferred to silicon substrates) techniques. The interfacial AuNP surface coverage strongly influenced the morphology of the interfacial nanofilms, and in turn their maximum reflectance and absorbance. We observed three distinct morphological regimes; (i) smooth 2D monolayers of "floating islands" of AuNPs at low surface coverages, (ii) a mixed 2D/3D regime with the beginnings of 3D nanostructures consisting of small piles of adsorbed AuNPs even under sub-full-monolayer conditions and, finally, (iii) a 3D regime characterised by the 2D full-monolayer being covered in significant piles of adsorbed AuNPs. A maximal value of reflectance reached 58% in comparison with a solid gold mirror, when 38 nm mean diameter AuNPs were used at a water-nitrobenzene interface. Meanwhile, interfacial gold nanofilms prepared with 12 nm mean diameter AuNPs exhibited the highest extinction intensities at ca. 690 nm and absorbance around 90% of the incident light, making them an attractive candidate for filtering applications. Furthermore, the interparticle spacing, and resulting interparticle plasmon coupling derived optical properties, varied significantly on replacing tetrathiafulvalene with neocuproine as the AuNP capping ligand in the nanofilm. These interfacial nanofilms formed with neocuproine and 38 nm mean diameter AuNPs, at monolayer surface coverages and above, were black due to aggregation and broadband absorbance.
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Affiliation(s)
- Evgeny Smirnov
- Laboratoire d'Electrochimie Physique et Analytique, Ecole Polytechnique Fédérale de Lausanne, Rue de l'Industrie 17, CH-1951 Sion, Switzerland.
| | - Pekka Peljo
- Laboratoire d'Electrochimie Physique et Analytique, Ecole Polytechnique Fédérale de Lausanne, Rue de l'Industrie 17, CH-1951 Sion, Switzerland.
| | - Micheál D Scanlon
- Department of Chemistry, the Tyndall National Institute and the Analytical & Biological Chemistry Research Facility (ABCRF), University College Cork, Cork, Ireland
| | - Frederic Gumy
- Laboratoire d'Electrochimie Physique et Analytique, Ecole Polytechnique Fédérale de Lausanne, Rue de l'Industrie 17, CH-1951 Sion, Switzerland.
| | - Hubert H Girault
- Laboratoire d'Electrochimie Physique et Analytique, Ecole Polytechnique Fédérale de Lausanne, Rue de l'Industrie 17, CH-1951 Sion, Switzerland.
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Lu TY, Lee YC, Yen YT, Yu CC, Chen HL. Astronomical liquid mirrors as highly ultrasensitive, broadband-operational surface-enhanced Raman scattering-active substrates. J Colloid Interface Sci 2016; 466:80-90. [DOI: 10.1016/j.jcis.2015.12.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Revised: 10/26/2015] [Accepted: 12/07/2015] [Indexed: 11/30/2022]
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13
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Smirnov E, Scanlon MD, Momotenko D, Vrubel H, Méndez MA, Brevet PF, Girault HH. Gold metal liquid-like droplets. ACS NANO 2014; 8:9471-9481. [PMID: 25184343 DOI: 10.1021/nn503644v] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Simple methods to self-assemble coatings and films encompassing nanoparticles are highly desirable in many practical scenarios, yet scarcely any examples of simple, robust approaches to coat macroscopic droplets with continuous, thick (multilayer), reflective and stable liquid nanoparticle films exist. Here, we introduce a facile and rapid one-step route to form films of reflective liquid-like gold that encase macroscopic droplets, and we denote these as gold metal liquid-like droplets (MeLLDs). The present approach takes advantage of the inherent self-assembly of gold nanoparticles at liquid-liquid interfaces and the increase in rates of nanoparticle aggregate trapping at the interface during emulsification. The ease of displacement of the stabilizing citrate ligands by appropriate redox active molecules that act as a lubricating molecular glue is key. Specifically, the heterogeneous interaction of citrate stabilized aqueous gold nanoparticles with the lipophilic electron donor tetrathiafulvalene under emulsified conditions produces gold MeLLDs. This methodology relies exclusively on electrochemical reactions, i.e., the oxidation of tetrathiafulvalene to its radical cation by the gold nanoparticle, and electrostatic interactions between the radical cation and nanoparticles. The gold MeLLDs are reversibly deformable upon compression and decompression and kinetically stable for extended periods of time in excess of a year.
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Affiliation(s)
- Evgeny Smirnov
- Laboratoire d'Electrochimie Physique et Analytique, Ecole Polytechnique Fédérale de Lausanne , Station 6, CH-1015 Lausanne, Switzerland
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