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Eelkema, M. (author), Wang, Z.B. (author), Stive, M.J.F. (author)The Eastern Scheldt tidal basin has changed drastically in the past five centuries under the influence of both human interventions as well as extreme events. In 1530 A.D. a storm-surge inundated large parts in the landward end of the basin, and in the following four centuries local inhabitants reclaimed about as much land as was inundated in...conference paper 2009
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Perrin, M.L. (author), Martin, C.A. (author), Prins, F. (author), Shaikh, A.J. (author), Eelkema, R. (author), Van Esch, J.H. (author), Van Ruitenbeek, J.M. (author), Van der Zant, H.S. (author), Dulic, D. (author)We have investigated charge transport in ZnTPPdT-Pyr (TPPdT: 5,15-di(p-thiolphenyl)-10,20-di(p-tolyl)porphyrin) molecular junctions using the lithographic mechanically controllable break-junction (MCBJ) technique at room temperature and cryogenic temperature (6 K). We combined low-bias statistical measurements with spectroscopy of the molecular...journal article 2011
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Eelkema, M. (author), Wang, Z.B. (author), Hibma, A. (author)The Eastern Scheldt ebb-tidal delta morphology has been adapting for the past 25 years in response to the construction of the Eastern Scheldt storm-surge barrier in 1986. As a result of the barrier, there has been a decrease in tidal amplitudes, volumes, and average flow velocities, and there is hardly any sediment exchange through the barrier....conference paper 2012
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Eelkema, M. (author)In the south-western part of the Netherlands, the system of estuaries, tidal basins and islands called the Delta, has been shaped and studied by humans for centuries. By far the largest event that determined its current configuration was the storm surge that occurred in 1953. This giant flooding gave rise to one of the largest engineering...doctoral thesis 2013
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Koper, G.J.M. (author), Boekhoven, J. (author), Hendriksen, W.E. (author), Eelkema, R. (author), Van Esch, J.H. (author)Self-assembled systems formed of micelles or vesicles have frequently been discussed as model systems for self-healing materials because their structure is dictated by thermodynamics and hence they quickly restore upon perturbation. In this aspect, they mimic many natural systems such as biological cells. However, in contrast to most synthetic...conference paper 2013
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Eelkema, M. (author), Wang, Z.B. (author), Stive, M.J.F. (author)The ebb-tidal delta of the Eastern Scheldt tidal inlet has been under the influence of a storm surge barrier for the past 25 years. This barrier caused a strong decrease in average tidal currents through the inlet. The morphological response of the ebb-tidal delta is characterized by several different processes: (1) an overall decrease in...conference paper 2013
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Cozzoli, F. (author), Eelkema, M. (author), Bouma, T.J. (author), Ysebaert, T. (author), Escaravage, V. (author), Herman, P.M.J. (author)Human infrastructures can modify ecosystems, thereby affecting the occurrence and spatial distribution of organisms, as well as ecosystem functionality. Sustainable development requires the ability to predict responses of species to anthropogenic pressures. We investigated the large scale, long term effect of important human alterations of...journal article 2014
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Eelkema, R. (author), Esch, J.H. van (author)In this Perspective, we will discuss how the rate of formation of supramolecular materials can be drastically enhanced by catalytically controlling the rate of formation of their molecular building blocks, resulting in the formation of out-of-equilibrium soft materials with enhanced mechanical properties. Also, the use of surface confined,...journal article 2014
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Gorczak, N. (author), Renaud, N. (author), Tarkuç, S. (author), Houtepen, A.J. (author), Eelkema, R. (author), Siebbeles, L.D.A. (author), Grozema, F.A. (author)Destructive quantum interference has been shown to strongly reduce charge tunneling rates across molecular bridges. The current consensus is that destructive quantum interference occurs in cross-conjugated molecules, while linearly conjugated molecules exhibit constructive interference. Our experimental results on photoinduced charge transfer in...journal article 2015
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Frisenda, R. (author), Tarkuc, S. (author), Galan, E. (author), Perrin, M.L. (author), Eelkema, R. (author), Grozema, F.C. (author), Van der Zant, H.S.J. (author)We report on an experimental investigation of transport through single molecules, trapped between two gold nano-electrodes fabricated with the mechanically controlled break junction (MCBJ) technique. The four molecules studied share the same core structure, namely oligo(phenylene ethynylene) (OPE3), while having different aurophilic anchoring...journal article 2015
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Gorczak-Vos, N. (author), Renaud, N. (author), Galán García, E. (author), Eelkema, R. (author), Siebbeles, L.D.A. (author), Grozema, F.C. (author)Quantum interference is a well-known phenomenon that dictates charge transport properties of single molecule junctions. However, reports on quantum interference in donor-bridge-acceptor molecules are scarce. This might be due to the difficulties in meeting the conditions for the presence of quantum interference in a donor-bridge-acceptor...journal article 2016
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Versluis, F. (author), van Esch, J.H. (author), Eelkema, R. (author)Synthetic self-assembly has long been recognized as an excellent approach for the formation of ordered structures on the nanoscale. Although the development of synthetic self-assembling materials has often been inspired by principles observed in nature (e.g., the assembly of lipids, DNA, proteins), until recently the self-assembly of...journal article 2016
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Galán, E. (author), Perrin, M.L. (author), Lutz, M. (author), Van der Zant, H.S.J. (author), Grozema, F.C. (author), Eelkema, R. (author)We have described the synthesis of novel biphenylethane-based wires for molecular electronics. Exceptional single-molecule diode behavior was predicted for unsymmetrically substituted biphenylethane derivatives, synthesized here using the so far unexplored unsymmetrically substituted 1,2-bis(4-bromophenyl)ethanes as key intermediates, which were...journal article 2016
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Gorczak, N. (author), Renaud, N. (author), Galan, E. (author), Eelkema, R. (author), Siebbeles, L.D.A. (author), Grozema, F.C. (author)Quantum interference is a well-known phenomenon that dictates charge transport properties of single molecule junctions. However, reports on quantum interference in donor-bridge-acceptor molecules are scarce. This might be due to the difficulties in meeting the conditions for the presence of quantum interference in a donor-bridge-acceptor system....journal article 2016
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Perrin, M.L. (author), Galán García, E. (author), Eelkema, R. (author), Thijssen, J.M. (author), Grozema, F.C. (author), van der Zant, H.S.J. (author)In the pursuit of down-sizing electronic components, the ultimate limit is the use of single molecules as functional devices. The first theoretical proposal of such a device, predicted more than four decades ago, is the seminal Aviram–Ratner rectifier that exploits the orbital structure of the molecule. The experimental realization of single...journal article 2016
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Muthusubramanian, N. (author), Galan, E. (author), Maity, C. (author), Eelkema, R. (author), Grozema, F.C. (author), van der Zant, H.S.J. (author)We present a method to fabricate insulated gold mechanically controlled break junctions (MCBJ) by coating the metal with a thin layer of aluminum oxide using plasma enhanced atomic layer deposition. The Al<sub>2</sub>O<sub>3</sub> thickness deposited on the MCBJ devices was varied from 2 to 15 nm to test the suppression of leakage currents in...journal article 2016
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Trausel, F. (author), Versluis, F. (author), Maity, C. (author), Poolman, J.M. (author), Lovrak, M. (author), van Esch, J.H. (author), Eelkema, R. (author)ConspectusOne often thinks of catalysts as chemical tools to accelerate a reaction or to have a reaction run under more benign conditions. As such, catalysis has a role to play in the chemical industry and in lab scale synthesis that is not to be underestimated. Still, the role of catalysis in living systems (cells, organisms) is much more...journal article 2016
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Trausel, F. (author), Maity, C. (author), Poolman, J.M. (author), Kouwenberg, D.S.J. (author), Versluis, F. (author), van Esch, J.H. (author), Eelkema, R. (author)Cells can react to their environment by changing the activity of enzymes in response to specific chemical signals. Artificial catalysts capable of being activated by chemical signals are rare, but of interest for creating autonomously responsive materials. We present an organocatalyst that is activated by a chemical signal, enabling temporal...journal article 2017
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Lovrak, M. (author), Hendriksen, W.E.J. (author), Maity, C. (author), Mytnyk, S. (author), van Steijn, V. (author), Eelkema, R. (author), van Esch, J.H. (author)Self-assembly provides access to a variety of molecular materials, yet spatial control over structure formation remains difficult to achieve. Here we show how reaction-diffusion (RD) can be coupled to a molecular self-assembly process to generate macroscopic free-standing objects with control over shape, size, and functionality. In RD, two or...journal article 2017
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Perrin, M.L. (author), Doelman, Matthijs (author), Eelkema, R. (author), van der Zant, H.S.J. (author)We propose the design of a single-molecule diode with a rectification ratio exceeding a million. The employed mechanism is based on coherent resonant charge transport across a molecule that consists of four conjugated sites coupled by non-conjugated bridges. Using density functional theory calculations, we rationalize the design of the...journal article 2017