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Thermocapillary-driven fluid flow within microchannels
(2018)arXivSurface tension gradients induce Marangoni flow, which may be exploited for fluid transport. At the micrometer scale, these surface-driven flows can be more significant than those driven by pressure. By introducing fluid-fluid interfaces on the walls of microfluidic channels, we use surface tension gradients to drive bulk fluid flows. The gradients are specifically induced through thermal energy, exploiting the temperature dependence of ...Working Paper -
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Treibhausgas-Emissionen aus Dienstreisen der ETH Zürich 2017–2018
(2019)Die vorliegende Zusammenfassung der Treibhausgas-Emissionen aus Dienstreisen der ETH Zürich zeigt die wichtigsten Emissionszahlen und Auswertungen. Erfasst in diesem Bericht sind alle Dienstreisen der Angestellten der ETH Zürich sowie die Flugreisen der Gäste der ETH Zürich, sofern die Reisekosten von der ETH Zürich übernommen wurden. Nicht erfasst sind Reisen von Studierenden im Rahmen ihres Studiums (Studienreisen), Pendlerbewegungen ...Report -
Quantitative Easing in the Euro area and SMEs Access to Finance: Who Benefits the Most?
(2019)After the global financial crisis and during the European sovereign debt crisis, bank lending to companies in the euro area slowed down dramatically, bringing the economy close to a credit crunch. It was only after the start of the European Central Bank (ECB) quantitative easing programme in early 2015 that bank lending improved sustainably. This study analyses the impact of the ECB's Public Sector Purchase Programme (PSPP) on the access ...Working Paper -
Stability analysis of fractional order systems described in the Lur'e structure
(2015)arXivLur'e systems are feedback interconnection of a linear time-invariant subsystem in the forward path and a memoryless nonlinear one in the feedback path, which have many physical representatives. In this paper, some classical theorems about the L2 input-output stability of integer order Lur'e systems are discussed, and the conditions under which these theorems can be applied in fractional order Lur'e systems with an order between 0 and 1 ...Working Paper -
Strong structural controllability under network perturbations
(2019)arXivThis paper investigates the robustness of strong structural controllability for linear time-invariant and linear time-varying directed networks with respect to structural perturbations, including edge deletions and additions. In this direction, we introduce a new construct referred to as a perfect graph associated with a network with a given set of control nodes. The tight upper bounds on the number of edges that can be added to, or removed ...Working Paper