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Werner AZ, Cordell WT, Lahive CW, Klein BC, Singer CA, Tan EC, Ingraham MA, Ramirez KJ, Kim DH, Pedersen JN, Johnson CW, Pfleger BF, Beckham GT, Salvachúa D. Lignin conversion to β-ketoadipic acid by Pseudomonas putida via metabolic engineering and bioprocess development. Sci Adv 2023; 9:eadj0053. [PMID: 37672573 PMCID: PMC10482344 DOI: 10.1126/sciadv.adj0053] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 08/04/2023] [Indexed: 09/08/2023]
Abstract
Bioconversion of a heterogeneous mixture of lignin-related aromatic compounds (LRCs) to a single product via microbial biocatalysts is a promising approach to valorize lignin. Here, Pseudomonas putida KT2440 was engineered to convert mixed p-coumaroyl- and coniferyl-type LRCs to β-ketoadipic acid, a precursor for performance-advantaged polymers. Expression of enzymes mediating aromatic O-demethylation, hydroxylation, and ring-opening steps was tuned, and a global regulator was deleted. β-ketoadipate titers of 44.5 and 25 grams per liter and productivities of 1.15 and 0.66 grams per liter per hour were achieved from model LRCs and corn stover-derived LRCs, respectively, the latter representing an overall yield of 0.10 grams per gram corn stover-derived lignin. Technoeconomic analysis of the bioprocess and downstream processing predicted a β-ketoadipate minimum selling price of $2.01 per kilogram, which is cost competitive with fossil carbon-derived adipic acid ($1.10 to 1.80 per kilogram). Overall, this work achieved bioproduction metrics with economic relevance for conversion of lignin-derived streams into a performance-advantaged bioproduct.
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Affiliation(s)
- Allison Z. Werner
- Renewable Resources and Enabling Sciences Center, National Renewable Energy Laboratory, Golden, CO, USA
| | - William T. Cordell
- Renewable Resources and Enabling Sciences Center, National Renewable Energy Laboratory, Golden, CO, USA
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, Madison, WI, USA
| | - Ciaran W. Lahive
- Renewable Resources and Enabling Sciences Center, National Renewable Energy Laboratory, Golden, CO, USA
| | - Bruno C. Klein
- Catalytic Carbon Transformation and Scale-Up Center, National Renewable Energy Laboratory, Golden, CO, USA
| | - Christine A. Singer
- Renewable Resources and Enabling Sciences Center, National Renewable Energy Laboratory, Golden, CO, USA
| | - Eric C. D. Tan
- Catalytic Carbon Transformation and Scale-Up Center, National Renewable Energy Laboratory, Golden, CO, USA
| | - Morgan A. Ingraham
- Renewable Resources and Enabling Sciences Center, National Renewable Energy Laboratory, Golden, CO, USA
| | - Kelsey J. Ramirez
- Renewable Resources and Enabling Sciences Center, National Renewable Energy Laboratory, Golden, CO, USA
| | - Dong Hyun Kim
- Renewable Resources and Enabling Sciences Center, National Renewable Energy Laboratory, Golden, CO, USA
| | - Jacob Nedergaard Pedersen
- Renewable Resources and Enabling Sciences Center, National Renewable Energy Laboratory, Golden, CO, USA
| | - Christopher W. Johnson
- Renewable Resources and Enabling Sciences Center, National Renewable Energy Laboratory, Golden, CO, USA
| | - Brian F. Pfleger
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, Madison, WI, USA
| | - Gregg T. Beckham
- Renewable Resources and Enabling Sciences Center, National Renewable Energy Laboratory, Golden, CO, USA
| | - Davinia Salvachúa
- Renewable Resources and Enabling Sciences Center, National Renewable Energy Laboratory, Golden, CO, USA
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Li Z, Anankanbil S, Pedersen JN, Nadzieja M, Guo Z. Nanocellulose Fractionated from TEMPO-Mediated Oxidation of Cellulose as An Energy-free Ingredient for Stabilizing Pickering Emulsion. Biochem Eng J 2022. [DOI: 10.1016/j.bej.2022.108795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Zhou Y, Pedersen JN, Pedersen JN, Jones NC, Hoffmann SV, Petersen SV, Pedersen JS, Perriman A, Gao R, Guo Z. Superanionic Solvent-Free Liquid Enzymes Exhibit Enhanced Structures and Activities. Adv Sci (Weinh) 2022; 9:e2202359. [PMID: 35988154 PMCID: PMC9661855 DOI: 10.1002/advs.202202359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Revised: 07/06/2022] [Indexed: 06/15/2023]
Abstract
The surface of a carboxylate-enriched octuple mutant of Bacillus subtilis lipase A (8M) is chemically anionized to produce core (8M)-shell (cationic polymer surfactants) bionanoconjugates in protein liquid form, which are termed anion-type biofluids. The resultant lipase biofluids exhibit a 2.5-fold increase in hydrolytic activity when compared with analogous lipase biofluids based on anionic polymer surfactants. In addition, the applicability of the anion-type biofluid using Myoglobin (Mb) that is well studied in anion-type solvent-free liquid proteins is evaluated. Although anionization resulted in the complete unfolding of Mb, the active α-helix level is partially recovered in the anion-type biofluids, and the effect is accentuated in the cation-type Mb biofluids. These highly active anion-type solvent-free liquid enzymes exhibit increased thermal stability and provide a new direction in solvent-free liquid protein research.
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Affiliation(s)
- Ye Zhou
- Key Laboratory for Molecular Enzymology and EngineeringThe Ministry of EducationSchool of Life SciencesJilin UniversityNo. 2699, Qianjin StreetChangchun130012P. R. China
- Department of Biological and Chemical EngineeringAarhus UniversityGustav Wieds Vej 10Aarhus8000Denmark
| | - Jannik Nedergaard Pedersen
- Department of Chemistry and Interdisciplinary Nanoscience Center (iNANO)Aarhus UniversityGustav Wieds Vej 14Aarhus8000Denmark
| | - Jacob Nedergaard Pedersen
- Department of Biological and Chemical EngineeringAarhus UniversityGustav Wieds Vej 10Aarhus8000Denmark
| | - Nykola C. Jones
- ISADepartment of Physics and AstronomyAarhus UniversityNy Munkegade 120Aarhus8000Denmark
| | | | - Steen Vang Petersen
- Department of BiomedicineAarhus UniversityWilhelm Meyers Allé 4Aarhus8000Denmark
| | - Jan Skov Pedersen
- Department of Chemistry and Interdisciplinary Nanoscience Center (iNANO)Aarhus UniversityGustav Wieds Vej 14Aarhus8000Denmark
| | - Adam Perriman
- School of Cellular and Molecular MedicineUniversity of BristolBS8 1TSBristolUK
| | - Renjun Gao
- Key Laboratory for Molecular Enzymology and EngineeringThe Ministry of EducationSchool of Life SciencesJilin UniversityNo. 2699, Qianjin StreetChangchun130012P. R. China
| | - Zheng Guo
- Department of Biological and Chemical EngineeringAarhus UniversityGustav Wieds Vej 10Aarhus8000Denmark
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Zhang Y, Pedersen JN, Eser BE, Guo Z. Biodegradation of polyethylene and polystyrene: From microbial deterioration to enzyme discovery. Biotechnol Adv 2022; 60:107991. [PMID: 35654281 DOI: 10.1016/j.biotechadv.2022.107991] [Citation(s) in RCA: 38] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 05/10/2022] [Accepted: 05/26/2022] [Indexed: 11/24/2022]
Abstract
The global production of plastics has continuously been soaring over the last decades due to their extensive use in our daily life and in industries. Although synthetic plastics offer great advantages from packaging to construction and electronics, their low biodegradability induce serious plastic pollution that damage the environment, human health and make irreversible changes in the ecological cycle. In particular, plastics containing only carbon-carbon (C-C) backbone are less susceptible to degradation due to the lack of hydrolysable groups. The representative polyethylene (PE) and polystyrene (PS) account for about 40% of the total plastic production. Various chemical and biological processes with great potential have been developed for plastic recycle and reuse, but biodegradation seems to be the most attractive and eco-friendly method to combat this growing environmental problem. In this review, we first summarize the current advances in PE and PS biodegradation, including isolation of microbes and potential degrading enzymes from different sources. Next, the state-of-the-art techniques used for evaluating and monitoring PE and PS degradation, the scientific toolboxes for enzyme discovery as well as the challenges and strategies for plastic biodegradation are intensively discussed. In return, it inspires a further technological exploration in expanding the diversity of species and enzymes, disclosing the essential pathways and developing new approaches to utilize plastic waste as feedstock for recycling and upcycling.
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Affiliation(s)
- Yan Zhang
- Department of Biological and Chemical Engineering, Aarhus University, 8000 Aarhus, Denmark
| | | | - Bekir Engin Eser
- Department of Biological and Chemical Engineering, Aarhus University, 8000 Aarhus, Denmark
| | - Zheng Guo
- Department of Biological and Chemical Engineering, Aarhus University, 8000 Aarhus, Denmark.
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Li L, Liu G, Bogojevic O, Pedersen JN, Guo Z. Edible oleogels as solid fat alternatives: Composition and oleogelation mechanism implications. Compr Rev Food Sci Food Saf 2022; 21:2077-2104. [DOI: 10.1111/1541-4337.12928] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Revised: 01/05/2022] [Accepted: 01/26/2022] [Indexed: 12/23/2022]
Affiliation(s)
- Linlin Li
- School of Food Science and Engineering South China University of Technology Guangzhou China
- Department of Biological and Chemical Engineering, Faculty of Technical Science Aarhus University Aarhus Denmark
| | - Guoqin Liu
- School of Food Science and Engineering South China University of Technology Guangzhou China
- Guangdong Province Key Laboratory for Green Processing of Natural Products and Products Safety South China University of Technology Guangzhou China
| | - Oliver Bogojevic
- Department of Biological and Chemical Engineering, Faculty of Technical Science Aarhus University Aarhus Denmark
| | - Jacob Nedergaard Pedersen
- Department of Biological and Chemical Engineering, Faculty of Technical Science Aarhus University Aarhus Denmark
| | - Zheng Guo
- Department of Biological and Chemical Engineering, Faculty of Technical Science Aarhus University Aarhus Denmark
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Pedersen JN, Liu S, Zhou Y, Balle T, Xu X, Guo Z. Synergistic effects of binary ionic liquid-solvent systems on enzymatic esterification of esculin. Food Chem 2020; 310:125858. [DOI: 10.1016/j.foodchem.2019.125858] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 11/02/2019] [Accepted: 11/03/2019] [Indexed: 10/25/2022]
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Pedersen JN, Pérez B, Guo Z. Stability of cellulase in ionic liquids: correlations between enzyme activity and COSMO-RS descriptors. Sci Rep 2019; 9:17479. [PMID: 31767916 PMCID: PMC6877754 DOI: 10.1038/s41598-019-53523-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Accepted: 10/31/2019] [Indexed: 11/12/2022] Open
Abstract
Ionic liquids (ILs) are effective in pretreating cellulose for enhanced enzymatic saccharification, however ILs can inactivate cellulases. To guide the selection of ILs, the activity of cellulase was correlated with COSMO-RS calculations and descriptors of ILs including hydrogen bond (H-bond) basicity/acidity, polarity and ion size. Trends were deduced using an anion-series and a cation-series of ionic liquids in aqueous solutions. The activity in the cation-series was best correlated with the size of varied cations, whereas the activity in the anion-series showed a pronounced correlation to H-bond basicity and polarity of different anions. COSMO-RS was further used to predict the solubility of cellulose in ILs, which was correlated with cellulase activity on IL-pretreated cellulose. The best correlations were found between the enzyme activity in the anion-series ILs and the logarithmic activity coefficients, the H-bond energy, H-bond basicity and polarizability, underlining that the anion plays a crucial role in cellulose dissolution.
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Affiliation(s)
- Jacob Nedergaard Pedersen
- Department of Engineering, Faculty of Science and Technology, Aarhus University, 8000, Aarhus, Denmark
| | - Bianca Pérez
- Department of Engineering, Faculty of Science and Technology, Aarhus University, 8000, Aarhus, Denmark.,Center for Food Technology, Danish Technological Institute, 8000, Aarhus, Denmark
| | - Zheng Guo
- Department of Engineering, Faculty of Science and Technology, Aarhus University, 8000, Aarhus, Denmark.
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Pedersen JN, Zhou Y, Guo Z, Pérez B. Genetic and chemical approaches for surface charge engineering of enzymes and their applicability in biocatalysis: A review. Biotechnol Bioeng 2019; 116:1795-1812. [DOI: 10.1002/bit.26979] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Revised: 03/10/2019] [Accepted: 03/28/2019] [Indexed: 12/25/2022]
Affiliation(s)
| | - Ye Zhou
- Department of EngineeringAarhus UniversityAarhus Denmark
- Key Laboratory for Molecular Enzymology and Engineering, Ministry of Education, School of Life ScienceJilin UniversityChangchun China
| | - Zheng Guo
- Department of EngineeringAarhus UniversityAarhus Denmark
| | - Bianca Pérez
- AgrotechDanish Technological InstituteAarhus Denmark
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Anankanbil S, Mose JH, Pérez B, Cheng W, Pedersen JN, Guo Z. Mapping the location of DATEM in multi-phase systems: Synthesis and characterization of spin-label probe analogues. Food Chem 2019; 275:474-479. [DOI: 10.1016/j.foodchem.2018.09.140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2018] [Revised: 09/20/2018] [Accepted: 09/23/2018] [Indexed: 10/28/2022]
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Cheng W, Anankanbil S, Pérez B, Pedersen JN, Liu G, Guo Z. Aspartic-Acid-Based Ampholytic Amphiphiles: Synthesis, Characterization, and pH-Dependent Properties at Air/Water and Oil/Water Interfaces. J Agric Food Chem 2019; 67:2321-2330. [PMID: 30721050 DOI: 10.1021/acs.jafc.8b05122] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
A facile and two-step strategy was employed to synthesize a series of novel aspartic-acid-based ampholytic amphiphiles from sustainable and commercially viable substances as starting materials. The molecular structures of the synthetic compounds were well-identified by mass spectrometry and 1H/13C nuclear magnetic resonance analysis, and the physicochemical, pH-dependent foaming, and emulsifying properties were evaluated by the use of multiple techniques, such as Fourier transform infrared spectroscopy, differential scanning calorimetry, Langmuir-Blodgett study, and fluorescence microscopy imaging. As a result of the co-existence of amino and carboxyl groups in the synthetic compounds, the compounds presented varying charges (cationic, ampholytic, and anionic) depending upon the pH of the medium compared to the dissociation constants (p Ka). Compounds with cationic (pH 1.0) and anionic (pH 9.0) forms had significantly higher γ0.1 and critical micelle concentration values than those with ampholytic forms (pH 7.0). sn-1-Lauroyl- sn-3-aspartic acid (compound 3) at neutral and alkaline conditions displayed comparable foaming properties, including foaming, calcium-tolerant, and temperature-resistant abilities, with commercial sulfonate sodium dodecyl sulfate (SDS), and thus might be a promising alternative to SDS, applied in personal care products and detergent formula. sn-1-Palmtoyl- sn-3-aspartic acid (compound 5a) with an ampholytic structure was proven as the most excellent stabilizer for the preparation of oil-in-water emulsions compared to palmityl aspartic acid (compound 5b), commercial food ingredient diacetyltartaric acid esters of mono- and diglycerides, and glyceride monopalmitate at aqueous phase pH 7.0. Thus, it has promising use as a pH-dependent emulsifying agent in various fields.
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Affiliation(s)
- Weiwei Cheng
- School of Food Science and Engineering , South China University of Technology , Guangzhou , Guangdong 510640 , People's Republic of China
- Department of Engineering, Faculty of Science and Technology , Aarhus University , Gustav Wieds Vej 10 , 8000 Aarhus C, Denmark
| | - Sampson Anankanbil
- Department of Engineering, Faculty of Science and Technology , Aarhus University , Gustav Wieds Vej 10 , 8000 Aarhus C, Denmark
| | - Bianca Pérez
- Department of Engineering, Faculty of Science and Technology , Aarhus University , Gustav Wieds Vej 10 , 8000 Aarhus C, Denmark
| | - Jacob Nedergaard Pedersen
- Department of Engineering, Faculty of Science and Technology , Aarhus University , Gustav Wieds Vej 10 , 8000 Aarhus C, Denmark
| | - Guoqin Liu
- School of Food Science and Engineering , South China University of Technology , Guangzhou , Guangdong 510640 , People's Republic of China
| | - Zheng Guo
- Department of Engineering, Faculty of Science and Technology , Aarhus University , Gustav Wieds Vej 10 , 8000 Aarhus C, Denmark
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Li J, Pedersen JN, Anankanbil S, Guo Z. Enhanced fish oil-in-water emulsions enabled by rapeseed lecithins obtained under different processing conditions. Food Chem 2018; 264:233-240. [PMID: 29853370 DOI: 10.1016/j.foodchem.2018.05.053] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Revised: 05/01/2018] [Accepted: 05/09/2018] [Indexed: 10/16/2022]
Abstract
It is hypothesized that rapeseed lecithins may have different emulsifying and antioxidant properties in delivering fish oil compared to soy lecithin based on previous studies. The results showed that in vitro antioxidant activities of rapeseed lecithins were stronger than those of soy lecithin. Emulsions stabilized by rapeseed based lecithins and DATEM were stable over 3 months at 4 °C, whereas the creaming of emulsions containing soy lecithin started immediately after its preparation. Zeta-potential of rapeseed lecithins was higher than soy lecithin and DATEM, which partially contributed to the emulsion stability. Although the particle sizes of emulsions prepared by rapeseed lecithins increased after 14 days storage, no creaming was observed. Lipid oxidation as indicated by TBARS values suggested that DATEM was the most unfavorable, followed by soy lecithin. It is concluded that rapeseed lecithins are better than soy lecithin and DATEM in terms of emulsion stability and antioxidant capability, respectively.
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Affiliation(s)
- Jingbo Li
- Department of Engineering, Faculty of Science and Technology, Aarhus University, Gustav Wieds Vej 10B, Building 3141, Room 1.28, 8000 Aarhus C, Denmark.
| | - Jacob Nedergaard Pedersen
- Department of Engineering, Faculty of Science and Technology, Aarhus University, Gustav Wieds Vej 10B, Building 3141, Room 1.28, 8000 Aarhus C, Denmark.
| | - Sampson Anankanbil
- Department of Engineering, Faculty of Science and Technology, Aarhus University, Gustav Wieds Vej 10B, Building 3141, Room 1.28, 8000 Aarhus C, Denmark.
| | - Zheng Guo
- Department of Engineering, Faculty of Science and Technology, Aarhus University, Gustav Wieds Vej 10B, Building 3141, Room 1.28, 8000 Aarhus C, Denmark.
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Nilsson HA, Karlström O, Larsson M, Caroff P, Pedersen JN, Samuelson L, Wacker A, Wernersson LE, Xu HQ. Correlation-induced conductance suppression at level degeneracy in a quantum dot. Phys Rev Lett 2010; 104:186804. [PMID: 20482198 DOI: 10.1103/physrevlett.104.186804] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2009] [Indexed: 05/29/2023]
Abstract
The large, level-dependent g factors in an InSb nanowire quantum dot allow for the occurrence of a variety of level crossings in the dot. While we observe the standard conductance enhancement in the Coulomb blockade region for aligned levels with different spins due to the Kondo effect, a vanishing of the conductance is found at the alignment of levels with equal spins. This conductance suppression appears as a canyon cutting through the web of direct tunneling lines and an enclosed Coulomb blockade region. In the center of the Coulomb blockade region, we observe the predicted correlation-induced resonance. Our findings are supported by numerical and analytical calculations.
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Affiliation(s)
- H A Nilsson
- Nanometer Structure Consortium, Lund University, Box 118, 221 00 Lund, Sweden
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