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          Institute: MPI für medizinische Forschung     Collection: Jahrbuch 2012     Display Documents



ID: 638106.0, MPI für medizinische Forschung / Jahrbuch 2012
Fractal morphology, imaging and mass spectrometry of single aerosol particles in flight
Translation of Title:Fractal morphology, imaging and mass spectrometry of single aerosol particles in flight
Authors:Loh, Ne−Te Duane; Hampton, Christina Y.; Martin, Andrew V.; Starodub, Dmitri; Sierra, Raymond G.; Barty, Anton; Aquila, Andrew; Schulz, Joachim; Lomb, Lukas; Steinbrener, Jan; Shoeman, Robert L.; Kassemeyer, Stephan; Bostedt, Christoph; Bozek, John; Epp, Sascha W.; Erk, Benjamin; Hartmann, Robert; Rolles, Daniel; Rudenko, Artem; Rudek, Benedikt; Foucar, Lutz; Kimmel, Nils; Weidenspointner, Georg; Hauser, Gunter; Holl, Peter; Pedersoli, Emanuele; Liang, Mengning; Hunter, Mark S.; Gumprecht, Lars; Coppola, Nicola; Wunderer, Cornelia B.; Graafsma, Heinz; Maia, Filipe R. N. C.; Ekeberg, Tomas; Hantke, Max; Fleckenstein, Holger; Hirsemann, Helmut; Nass, Karol; White, Thomas A.; Tobias, H. J.; Farquar, George R.; Benner, W. Henry; Hau−Riege, Stefan P.; Reich, Christian; Hartmann, Andreas; Soltau, Heike; Marchesini, Stefano; Bajt, Saša; Barthelmess, Miriam; Bucksbaum, Phillip; Hodgson, Keith O.; Strüder, Lothar; Ullrich, Joachim; Frank, Matthias; Schlichting, Ilme; Chapman, Henry N.; Bogan, Michael J.
Language:English
Date of Publication (YYYY-MM-DD):2012-06-27
Title of Journal:Nature
Journal Abbrev.:Nat.
Volume:486
Issue / Number:7404
Start Page:513
End Page:517
Review Status:Peer-review
Audience:Experts Only
Intended Educational Use:No
Abstract / Description:The morphology of micrometre−size particulate matter is of critical importance in fields ranging from toxicology to climate science, yet these properties are surprisingly difficult to measure in the particles' native environment. Electron microscopy requires collection of particles on a substrate; visible light scattering provides insufficient resolution; and X−ray synchrotron studies have been limited to ensembles of particles. Here we demonstrate an in situ method for imaging individual sub−micrometre particles to nanometre resolution in their native environment, using intense, coherent X−ray pulses from the Linac Coherent Light Source free−electron laser. We introduced individual aerosol particles into the pulsed X−ray beam, which is sufficiently intense that diffraction from individual particles can be measured for morphological analysis. At the same time, ion fragments ejected from the beam were analysed using mass spectrometry, to determine the composition of single aerosol particles. Our results show the extent of internal dilation symmetry of individual soot particles subject to non−equilibrium aggregation, and the surprisingly large variability in their fractal dimensions. More broadly, our methods can be extended to resolve both static and dynamic morphology of general ensembles of disordered particles. Such general morphology has implications in topics such as solvent accessibilities in proteins, vibrational energy transfer by the hydrodynamic interaction of amino acids, and large−scale production of nanoscale structures by flame synthesis
External Publication Status:published
Document Type:Article
Communicated by:Wulf Kaiser
Affiliations:MPI für medizinische Forschung/Abteilung Biophysik
MPI für medizinische Forschung/Abteilung Biomolekulare Mechanismen
MPI für medizinische Forschung/Abteilung Biomolekulare Mechanismen/Heme and Flavin Enzymes
MPI für medizinische Forschung/Abteilung Biomolekulare Mechanismen/Analytical Protein Biochemistry
MPI für medizinische Forschung/Abteilung Biomolekulare Mechanismen/Coherent diffractive imaging
Identifiers:LOCALID:7821
URI:http%3A%2F%2Fwww.nature.com%2Fnature%2Fjournal%2Fv...
URI:http%3A%2F%2Fwww.nature.com%2Fnature%2Fjournal%2Fv...
URI:http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpubmed%2F22739...
DOI:10.1038%2Fnature11222
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