Zobrazeno 1 - 10
of 46
pro vyhledávání: '"Frank Umbach"'
Autor:
Frank Umbach
Publikováno v:
SIRIUS – Zeitschrift für Strategische Analysen. 6:373-393
Kurzfassung Deutschlands gescheiterte Russland-Politik der letzten beiden Jahrzehnte mit ihren kollektiven Fehlannahmen und Fehleinschätzungen ist eng verbunden mit seiner Energiepolitik seit 2002, insbesondere mit der Gasimportabhängigkeit von Rus
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a2cb7f7b1a1f05d77963e49d0e8be517
https://doi.org/10.1515/sirius-2022-4003
https://doi.org/10.1515/sirius-2022-4003
Autor:
Frank Umbach
Publikováno v:
East Asian Policy. 13:47-64
The EU–China relations have already changed significantly since 2019. Despite the deeply intertwined technology supply chains between the European Union (EU) and China, the EU could neither ignore Beijing’s new aggressive “wolf warrior” diplo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::88b2407115c3724c5f5e50c6a74914b3
https://doi.org/10.1142/s1793930521000040
https://doi.org/10.1142/s1793930521000040
Autor:
Carsten Schäffer, Frank Umbach, Nicolas Heuck, Holger Schulze, Martin Kerber, Daniel Bolowski, Karsten Guth, Frank Hille, Alexander Ciliox, Roman Roth, K. Rott
Publikováno v:
Microelectronics Reliability. 64:393-402
The introduction of thick copper metallization and topside interconnects as well as a superior die attach technology is improving the performance and reliability of IGBT power transistor technologies significantly. The much higher specific heat capac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::40542cd70c27a59476792e683193e9e6
https://doi.org/10.1016/j.microrel.2016.07.119
https://doi.org/10.1016/j.microrel.2016.07.119
Publikováno v:
Microelectronics Reliability. 64:458-463
This work is motivated by the growing importance of lifetime modelling in power electronics. Strongly accelerated High Temperature Reverse Bias (HTRB) testing of power diodes at different stress conditions is performed until alterations and fatigue m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::860b50a7fe12ab3bd06457b9f69b223d
https://doi.org/10.1016/j.microrel.2016.07.137
https://doi.org/10.1016/j.microrel.2016.07.137
Autor:
H.-J. Schulze, Franz Josef Niedernostheide, Philip Christoph Brandt, Andre Rainer Stegner, Wolfgang Wagner, Frank Umbach, Christian Philipp Sandow, Hans-Peter Felsl, F. Pfirsch, F. Santos
Publikováno v:
2018 IEEE 30th International Symposium on Power Semiconductor Devices and ICs (ISPSD).
The continued shrinking of IGBT chips calls for new design approaches to ensure reliable and stable switching operation during the chip lifetime. We demonstrate a new asymmetric gate oxide concept with a designed variable thickness that leads to stab
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::63efafa71c5ab018f87d5a47de328d28
https://doi.org/10.1109/ispsd.2018.8393593
https://doi.org/10.1109/ispsd.2018.8393593
Autor:
Frank Umbach
Publikováno v:
Asia Europe Journal. 11:305-322
The development of unconventional gas exploration in the USA, in particular shale gas, caused a revolution in the American and the global gas markets. The regional-wide use of unconventional gas resources could stabilise the natural gas demand and th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::89c04c5297c755843255b16484c72748
https://doi.org/10.1007/s10308-013-0355-5
https://doi.org/10.1007/s10308-013-0355-5
Autor:
Frank Umbach, G. Mertens, H.-J. Schulze, D. Bolowski, Frank Hille, N. Rohn, Carsten Schäffer, Roman Roth
Publikováno v:
2016 28th International Symposium on Power Semiconductor Devices and ICs (ISPSD).
A novel power Cu front side chip metallization for insulated-gate bipolar transistors (IGBTs) and freewheeling diodes (FWDs) enabling thick Cu wire wedge bonding on active area is reported. In the continuing race to higher power density, main limitat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7ad7d23af001dfc4827b9e2bd2f9a747
https://doi.org/10.1109/ispsd.2016.7520811
https://doi.org/10.1109/ispsd.2016.7520811
Autor:
Frank Umbach
Publikováno v:
Journal of Transatlantic Studies. 10:374-387
Since the end of the 1990s, international energy experts have stressed the increasing strategic importance of energy supply security as part and within the ‘energy triangle’ with its three major objectives: economic competitiveness, environmental
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8dc990f674a4eef6e2133f11d8e06039
https://doi.org/10.1080/14794012.2012.734672
https://doi.org/10.1080/14794012.2012.734672
Autor:
Frank Umbach
Publikováno v:
Energy Policy. 38:1229-1240
The following article will analyse the global and geopolitical dimensions of the future international energy security and its implications for Europe and the EU-27. In this context, I will discuss to which extent the EU's newly proclaimed “Energy A
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f225a74cb7c63cf1a57a0ed7ab8940af
https://doi.org/10.1016/j.enpol.2009.01.010
https://doi.org/10.1016/j.enpol.2009.01.010