Zobrazeno 1 - 10
of 11
pro vyhledávání: '"David Hartung"'
Autor:
David Hartung, Stefanie Celevics, Patrick Hirsch, Ivonne Jahn, Lovis Kneisel, Kay Kölzig, André Matthes, Holger Cebulla
Publikováno v:
Sustainability; Volume 15; Issue 7; Pages: 6250
The natural fiber-reinforced thermoplastic tape was produced using a novel process assembly that involves a drawframe and a double belt press. First, the state-of-the-art film-stacking process was modified through the integration of a drawframe to su
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c4cdaaff015b35fcf0bc471e214b6f7e
https://doi.org/10.3390/su15076250
https://doi.org/10.3390/su15076250
Autor:
David Hartung, Eckhard Mueller, Sabine Schlecht, Marc O. Loeh, Peter J. Klar, Oliver Falkenbach, Christoph W. Wiegand, Andreas Schmitz, Guenter Koch
We have investigated the influence of substituting bismuth for lead in lead telluride. The material was nanostructured by mechanical alloying and compacted via short-term sintering or hot pressing. Synthesis of samples with substitution up to 6 at.%
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6e76c18101136b06a935db443b66e31c
https://elib.dlr.de/115154/
https://elib.dlr.de/115154/
Autor:
Christian Rohner, Peter J. Klar, David Hartung, Bernadette Landschreiber, Ekrem Güneş, Sabine Schlecht, Matthias T. Elm
Publikováno v:
Journal of Electronic Materials. 43:2127-2133
Bismuth nanotubes have been synthesized and successfully included in Bi1−xSbx nanoalloys to form composite structures. The nanotubes were synthesized by transformation of a β-BiI precursor with n-BuLi solution leading to tubular bismuth structures
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8a7f5168009f2d8cb4fc1bf9afa34c34
https://doi.org/10.1007/s11664-014-2989-5
https://doi.org/10.1007/s11664-014-2989-5
Autor:
S. Graubner, David Hartung, R. Hamann, Peter J. Klar, P. Hoffmann, Martin Becker, C. Voget-Grote, Angelika Polity, Carsten Ronning
Publikováno v:
Journal of Applied Physics. 125:085703
Two series of SnO thin films, one doped with N and one doped with H, were deposited on c-plane sapphire by reactive ion beam sputter deposition starting from growth parameters optimized for stoichiometric SnO. The amounts of dopants incorporated into
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::494f38d79f07ac5d995198281bba4b4d
https://doi.org/10.1063/1.5052606
https://doi.org/10.1063/1.5052606
Publikováno v:
Journal of Electronic Materials. 43:1674-1680
In this work we present a simple method to synthesize nanostructured, bismuth-doped lead telluride by co-ball-milling. The obtained nanopowders were compacted via either a cold pressing/annealing approach or by hot pressing. The two compacting method
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4811b71ce90386eaf21f22f10312f647
https://doi.org/10.1007/s11664-013-2832-4
https://doi.org/10.1007/s11664-013-2832-4
Autor:
David Hartung, Guenter Koch, Torben Dankwort, Peter J. Klar, Sabine Schlecht, Oliver Falkenbach, Andreas Schmitz, Lorenz Kienle, Eckhard Mueller
We report on the preparation and thermoelectric properties of the quaternary system AgPbmBiTe2+m (Bismuth-Lead-Silver-Tellurium, BLST-m) that were nanostructured by mechanical alloying. Nanopowders of various compositions were compacted by three diff
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ee73488a2e65c0d9aa451f105331f839
https://doi.org/10.1063/1.4952982
https://doi.org/10.1063/1.4952982
Autor:
Markus Piechotka, Sven Ole Steinmüller, Bruno K. Meyer, A. Kronenberger, David Hartung, G. Homm, Peter J. Klar, F. Gather, Jürgen Janek, Andreas Laufer, Christian Heiliger
Publikováno v:
Journal of Electronic Materials. 39:1504-1509
Multilayer samples of alternating n-type ZnO and insulating ZnS layers were deposited by radiofrequency (RF) magnetron sputtering on glass substrates. The number of ZnO/ZnS periods was varied throughout the series to increase the number of interfaces
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dd0eb68c670a6c35c05807d7a650919b
https://doi.org/10.1007/s11664-010-1293-2
https://doi.org/10.1007/s11664-010-1293-2
Autor:
Yinmei Lu, Detlev M. Hofmann, David Hartung, Peter J. Klar, Jie Jiang, L. Ostheim, Martin Eickhoff
Publikováno v:
physica status solidi (b). 254:1700003
Tin oxide thin films with nitrogen and hydrogen as dopants (SnO2:N,H) were prepared by chemical vapor deposition. To investigate the charge transport mechanisms in the samples the electrical conductivities were measured in the temperature range from
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::11c694cbdd2a95ba370697ebffa721a0
https://doi.org/10.1002/pssb.201700003
https://doi.org/10.1002/pssb.201700003
Publikováno v:
AIP Conference Proceedings.
Two different methods for the measurement of the thermal conductivity have been applied to a glass (borosilicate) bulk sample. The first method was in the steady-state using an arrangement of gold wires on the sample to create a thermal gradient and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::25262947ce50eddbf0945c0b62596c91
https://doi.org/10.1063/1.4731576
https://doi.org/10.1063/1.4731576
Assessing the thermoelectric properties of CuxO (x = 1 to 2) thin films as a function of composition
Autor:
Daniel Reppin, F. Gather, Bruno K. Meyer, Peter J. Klar, Angelika Polity, David Hartung, P. Hering, C. Kandzia
Publikováno v:
Applied Physics Letters. 106:253901
Series of CuxO thin-films in the entire range of compositions 1≤x≤2 were obtained by varying the oxygen flux in an rf-sputter deposition process. Growth windows for three crystalline phases, i.e., the thermodynamically stable cuprous oxide Cu2O a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0ebbc1c5cd90e087dc14509d43ac18eb
https://doi.org/10.1063/1.4923031
https://doi.org/10.1063/1.4923031