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Rout, P.K. (author), Papadopoulos, N. (author), Peñaranda, Fernando (author), Watanabe, Kenji (author), Taniguchi, Takashi (author), Prada, Elsa (author), San-Jose, Pablo (author), Goswami, S. (author)Bilayer graphene encapsulated in tungsten diselenide can host a weak topological phase with pairs of helical edge states. The electrical tunability of this phase makes it an ideal platform to investigate unique topological effects at zero magnetic field, such as topological superconductivity. Here we couple the helical edges of such a...journal article 2024
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Ghassemian, Mona (author), Vukobratovic, Dejan (author), Papadopoulos, Christos (author), An, Xueli (author), Chatzimisios, Periklis (author), Aijaz, Adnan (author), Li, Peizheng (author), Valenzuela, Andres Meseguer (author), Venkatesha Prasad, Ranga Rao (author)With the increasing usage of robots in numerous vertical industries, the need for standardised solutions has intensified. A number of research and industrial communities and other Standards Developing Organisations (SDOs) have been actively working to identify areas in the robotics and automation sector that are suitable for standardisation. On...conference paper 2023
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Kedves, Máté (author), Szentpéteri, Bálint (author), Márffy, Albin (author), Tóvári, Endre (author), Papadopoulos, N. (author), Rout, P.K. (author), Watanabe, Kenji (author), Taniguchi, Takashi (author), Goswami, S. (author), Makk, Peter (author)Bilayer graphene (BLG) was recently shown to host a band-inverted phase with unconventional topology emerging from the Ising-type spin-orbit interaction (SOI) induced by the proximity of transition metal dichalcogenides with large intrinsic SOI. Here, we report the stabilization of this band-inverted phase in BLG symmetrically encapsulated in...journal article 2023
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Frisenda, Riccardo (author), Sanchez-Santolino, Gabriel (author), Papadopoulos, N. (author), Urban, Joanna (author), Baranowski, Michal (author), Surrente, Alessandro (author), Maude, Duncan K. (author), Garcia-Hernandez, Mar (author), van der Zant, H.S.J. (author)Franckeite is a naturally occurring layered mineral with a structure composed of alternating stacks of SnS2-like and PbS-like layers. Although this superlattice is composed of a sequence of isotropic two-dimensional layers, it exhibits a spontaneous rippling that makes the material structurally anisotropic. We demonstrate that this rippling...journal article 2020
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Ghasemi, Foad (author), Frisenda, Riccardo (author), Flores, Eduardo (author), Papadopoulos, N. (author), Biele, Robert (author), de Lara, David Perez (author), van der Zant, H.S.J. (author), Watanabe, Kenji (author), Castellanos-Gomez, Andres (author)In two-dimensional materials research, oxidation is usually considered as a common source for the degradation of electronic and optoelectronic devices or even device failure. However, in some cases a controlled oxidation can open the possibility to widely tune the band structure of 2D materials. In particular, we demonstrate the controlled...journal article 2020
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Papadopoulos, N. (author), Gehring, P. (author), Watanabe, Kenji (author), Taniguchi, Takashi (author), van der Zant, H.S.J. (author), Steele, G.A. (author)In transition metal dichalcogenides, defects have been found to play an important role, affecting doping, spin-valley relaxation dynamics, and assisting in proximity effects of spin-orbit coupling. Here we study localized states in WS2 and how they affect tunneling through van der Waals heterostructures of h-BN/graphene/ WS2/metal. The...journal article 2020
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Papadopoulos, Panayiotis M. (author), Reppa, V. (author), Polycarpou, Marios M. (author), Panayiotou, Christos G. (author)The enormous energy use of the building sector and the requirements for indoor living quality that aim to improve occupants'productivity and health, prioritize Smart Buildings as an emerging technology. The Heating, Ventilation and Air-Conditioning ( HVAC ) system is considered one of the most critical and essential parts in buildings since...journal article 2020
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Voitalov, Ivan (author), van der Hoorn, Pim (author), Kitsak, M.A. (author), Papadopoulos, Fragkiskos (author), Krioukov, Dmitri (author)Maximum entropy null models of networks come in different flavors that depend on the type of constraints under which entropy is maximized. If the constraints are on degree sequences or distributions, we are dealing with configuration models. If the degree sequence is constrained exactly, the corresponding microcanonical ensemble of random graphs...journal article 2020
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Papadopoulos, N. (author)This thesis presents an experimental work on electronic transport in two-dimensional (2D) van der Waals systems. The variety of the physics of the chapters reflects the exploratory character of the Ph.D. study and demonstrates the versatility and the unique properties of some of the members of the vast group of van der Waals materials. In the...doctoral thesis 2019
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Huijgens, H.K.M. (author), Greuter, Eric (author), Brons, Jerry (author), Doorn, Evert A. van (author), Papadopoulos, Ioannis (author), Martinez, Francisco Morales (author), Aniche, Maurício (author), Visser, O.W. (author), van Deursen, A. (author)The development of Cloud Infra-Services has shifted over the past decade in the direction of a software code development process, also known as infrastructure as code (IaC). Contemporary continuous delivery settings in industry require fast feedback. As a consequence, companies need insight in time spent, especially in the development of such...conference paper 2019
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Papadopoulos, N. (author), Watanabe, Kenji (author), Taniguchi, Takashi (author), van der Zant, H.S.J. (author), Steele, G.A. (author)We present measurements of weak localization on hexagonal boron nitride encapsulated bilayer MoS2. From the analysis we obtain information regarding the phase coherence and the spin diffusion of the electrons. We find that the encapsulation with boron nitride provides higher mobilities in the samples, and the phase coherence shows improvement...journal article 2019
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Papadopoulos, N. (author), Flores, Eduardo (author), Watanabe, Kenji (author), Taniguchi, Takashi (author), Ares, Jose R. (author), Sanchez, Carlos (author), Ferrer, Isabel J. (author), Castellanos-Gomez, Andres (author), Steele, G.A. (author), van der Zant, H.S.J. (author)We have studied electrical transport as a function of carrier density, temperature and bias in multi-terminal devices consisting of hexagonal boron nitride (h-BN) encapsulated titanium trisulfide (TiS<sub>3</sub>) sheets. Through the encapsulation with h-BN, we observe metallic behavior and high electron mobilities. Below ∼60 K an increase in...journal article 2019
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Ilyushkin, A.S. (author), Ali-Eldin, Ahmed (author), Herbst, Nikolas (author), Bauer, André (author), Papadopoulos, Alessandro (author), Epema, D.H.J. (author), Iosup, A. (author)Elasticity is one of the main features of cloud computing allowing customers to scale their resources based on the workload. Many autoscalers have been proposed in the past decade to decide on behalf of cloud customers when and how to provision resources to a cloud application based on the workload utilizing cloud elasticity features. However,...journal article 2018
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Papadopoulos, N. (author), Island, J.O. (author), van der Zant, H.S.J. (author), Steele, G.A. (author)Phase engineering of MoS&#x2082; transistors has recently been demonstrated and has led to record low contact resistances. The phase patterning of MoS&#x2082; flakes with laser radiation has also been realized via spectroscopic methods, which invites the potential of controlling the metallic and semiconducting phases of MoS&#x2082...journal article 2018
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Papadopoulos, N. (author), Frisenda, Riccardo (author), Biele, Robert (author), Flores, Eduardo (author), Ares, Jose R. (author), Sánchez, Carlos (author), van der Zant, H.S.J. (author), Ferrer, Isabel J. (author), D'Agosta, Roberto (author), Castellanos-Gomez, Andres (author)TiS<sub>3</sub> nanosheets have proven to be promising candidates for ultrathin optoelectronic devices due to their direct narrow band-gap and the strong light-matter interaction. In addition, the marked in-plane anisotropy of TiS<sub>3</sub> is appealing for the fabrication of polarization sensitive optoelectronic devices. Herein, we study...journal article 2018
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Papadopoulos, N. (author), Steele, G.A. (author), van der Zant, H.S.J. (author)We have studied temperature- and electric-field-dependent carrier transport in single flakes of MoS2 treated with n-butyllithium. The temperature dependence of the four-terminal resistance follows the Efros-Shklovskii variable range hopping conduction mechanism. From measurements in the Ohmic and non-Ohmic regime, we estimate the localization...journal article 2017
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Ilyushkin, A.S. (author), Ali-Eldin, Ahmed (author), Herbst, Nikolas (author), Papadopoulos, Alessandro (author), Ghit, B.I. (author), Epema, D.H.J. (author), Iosup, A. (author)Simplifying the task of resource management and scheduling for customers, while still delivering complex Quality-of-Service (QoS), is key to cloud computing. Many autoscaling policies have been proposed in the past decade to decide on behalf of cloud customers when and how to provision resources to a cloud application utilizing cloud elasticity...conference paper 2017
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Fröhlich, D. (author), Pantatosaki, E. (author), Kolokathis, P.D. (author), Markey, K (author), Reinsch, H. (author), Baumgartner, M. (author), van der Veen, M.A. (author), De Vos, D.E. (author), Stock, N (author), Papadopoulos, G.K. (author), Henninger, S.K. (author), Janiak, C. (author)Aluminium isophthalate CAU-10-H [Al(OH)(benzene-1,3-dicarboxylate)]·nH2O exhibits water adsorption characteristics which make it a promising adsorbent for application in heat-exchange processes. Herein we prepared a stable coating of this MOF and evaluated its long-term stability under closed-cycle conditions for 10 000 water adsorption and...journal article 2016
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Ali-Eldin, Ahmed (author), Ilyushkin, A.S. (author), Ghit, B.I. (author), Herbst, Nikolas (author), Papadopoulos, Alessandro (author), Iosup, A. (author)Rapid elasticity is one of the essential characteristics of cloud computing identified by NIST. Elasticity allows resources to be provisioned and released to scale rapidly out ward and in ward according to demand. Tens -- if not hundreds -- of algorithms have been proposed in the literature to automatically achieve elastic provisioning. These...conference paper 2016
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Papadopoulos, P. (author), Bantas, S. (author), Stefanou, S. (author), Silvant, M (author), Goujon, J.P. (author)Accurate and reliable models for integrated spiral inductors are required at design time of integrated circuits dedicated for RF applications. Electromagnetic solvers require long simulation times, especially taking into account advanced technology improvements like thick metal layers, substrate effects, etc. VeloceRF is a tool dedicated to...conference paper 2006