- document
-
Sahoo, Prasana K. (author), Janissen, R. (author), Monteiro, Moniellen P. (author), Cavalli, Alessandro (author), Murillo, Duber M. (author), Merfa, Marcus V. (author), Cesar, Carlos L. (author), Carvalho, Hernandes F. (author), De Souza, Alessandra A. (author), Bakkers, E.P.A.M. (author), Cotta, Monica A. (author)Surface attachment of a planktonic bacteria, mediated by adhesins and extracellular polymeric substances (EPS), is a crucial step for biofilm formation. Some pathogens can modulate cell adhesiveness, impacting host colonization and virulence. A framework able to quantify cell-surface interaction forces and their dependence on chemical surface...journal article 2016
- document
-
Greil, J. (author), Assali, S. (author), Isono, Y. (author), Belabbes, A. (author), Bechstedt, F. (author), Valega MacKenzie, F. O. (author), Silov, A. Yu (author), Bakkers, E.P.A.M. (author), Haverkort, J.E.M. (author)Wurtzite gallium phosphide (WZ GaP) has been predicted to exhibit a direct bandgap in the green spectral range. Optical transitions, however, are only weakly allowed by the symmetry of the bands. While efficient luminescence has been experimentally shown, the nature of the transitions is not yet clear. Here we apply tensile strain up to 6%...journal article 2016
- document
-
Brauns, Matthias (author), Ridderbos, Joost (author), Li, Ang (author), Bakkers, E.P.A.M. (author), Van Der Wiel, Wilfred G. (author), Zwanenburg, Floris A. (author)We present measurements on gate-defined double quantum dots in Ge-Si core-shell nanowires, which we tune to a regime with visible shell filling in both dots. We observe a Pauli spin blockade and can assign the measured leakage current at low magnetic fields to spin-flip cotunneling, for which we measure a strong anisotropy related to an...journal article 2016
- document
-
Vigneau, Florian (author), Gül, Önder (author), Niquet, Yann Michel (author), Car, Diana (author), Plissard, Sebastien R. (author), Escoffier, Walter (author), Bakkers, E.P.A.M. (author), Duchemin, Ivan (author), Raquet, Bertrand (author), Goiran, Michel (author)The charge transport properties of individual InSb nanowires based transistors are studied at 4.2 K in the quasiballistic regime. The energy level separations at zero magnetic field are extracted from a bias voltage spectroscopy. The magnetoconductance under a magnetic field applied perpendicularly to the nanowire axis is investigated up to...journal article 2016
- document
-
De Lange, G. (author), Van Heck, B. (author), Bruno, A. (author), Van Woerkom, D.J. (author), Geresdi, A. (author), Plissard, S.R. (author), Bakkers, E.P.A.M. (author), Akhmerov, A.R. (author), Di Carlo, L. (author)We report the realization of quantum microwave circuits using hybrid superconductor-semiconductor Josephson elements comprised of InAs nanowires contacted by NbTiN. Capacitively shunted single elements behave as transmon circuits with electrically tunable transition frequencies. Two-element circuits also exhibit transmonlike behavior near zero...journal article 2015
- document
-
Standing, A. (author), Assali, S. (author), Gao, L. (author), Verheijen, M.A. (author), Van Dam, D. (author), Cui, Y. (author), Notten, P.H.L. (author), Haverkort, J.E.M. (author), Bakkers, E.P.A.M. (author)Photoelectrochemical hydrogen production from solar energy and water offers a clean and sustainable fuel option for the future. Planar III/V material systems have shown the highest efficiencies, but are expensive. By moving to the nanowire regime the demand on material quantity is reduced, and new materials can be uncovered, such as wurtzite...journal article 2015
- document
-
Van Weperen, I. (author), Tarasinski, B. (author), Eeltink, D. (author), Pribiag, V.S. (author), Plissard, S.R. (author), Bakkers, E.P.A.M. (author), Kouwenhoven, L.P. (author), Wimmer, M.T. (author)We use magnetoconductance measurements in dual-gated InSb nanowire devices, together with a theoretical analysis of weak antilocalization, to accurately extract spin-orbit strength. In particular, we show that magnetoconductance in our three-dimensional wires is very different compared to wires in two-dimensional electron gases. We obtain a...journal article 2015
- document
-
Frolov, S.M. (author), Plissard, S.R. (author), Nadj-Perge, S. (author), Kouwenhoven, L.P. (author), Bakkers, E.P.A.M. (author)A quantum computer will have computational power beyond that of conventional computers, which can be exploited for solving important and complex problems, such as predicting the conformations of large biological molecules. Materials play a major role in this emerging technology, as they can enable sophisticated operations, such as control over...journal article 2013
- document
-
Van den Berg, J.W.G. (author), Nadj-Perge, S. (author), Pribiag, V.S. (author), Plissard, S.R. (author), Bakkers, E.P.A.M. (author), Frolov, S.M. (author), Kouwenhoven, L.P. (author)Because of the strong spin-orbit interaction in indium antimonide, orbital motion and spin are no longer separated. This enables fast manipulation of qubit states by means of microwave electric fields. We report Rabi oscillation frequencies exceeding 100 MHz for spin-orbit qubits in InSb nanowires. Individual qubits can be selectively addressed...journal article 2013
- document
-
Fontana, Y. (author), Grzela, G. (author), Bakkers, E.P.A.M. (author), Gomez Rivas, J. (author)Controlling the dispersion and directionality of the emission of nanosources is one of the major goals of nanophotonics research. This control will allow the development of highly efficient nanosources even at the single-photon level. One of the ways to achieve this goal is to couple the emission to Bloch modes of periodic structures. Here, we...journal article 2012
- document
-
Frolov, S.M. (author), Danon, J. (author), Nadj-Perge, S. (author), Zuo, K. (author), Van Tilburg, J.W.W. (author), Pribiag, V.S. (author), Van den Berg, J.W.G. (author), Bakkers, E.P.A.M. (author), Kouwenhoven, L.P. (author)We use electric dipole spin resonance to measure dynamic nuclear polarization in InAs nanowire quantum dots. The resonance shifts in frequency when the system transitions between metastable high and low current states, indicating the presence of nuclear polarization. We propose that the low and the high current states correspond to different...journal article 2012
- document
-
Nadj-perge, S. (author), Pribiag, V.S. (author), Van den Berg, J.W.G. (author), Zuo, K. (author), Plissard, S.R. (author), Bakkers, E.P.A.M. (author), Frolov, S.M. (author), Kouwenhoven, L.P. (author)A double quantum dot in the few-electron regime is achieved using local gating in an InSb nanowire. The spectrum of two-electron eigenstates is investigated using electric dipole spin resonance. Singlet-triplet level repulsion caused by spin-orbit interaction is observed. The size and the anisotropy of singlet-triplet repulsion are used to...journal article 2012
- document
-
Bulgarini, G. (author), Reimer, M.E. (author), Zehender, T. (author), Hocevar, M. (author), Bakkers, E.P.A.M. (author), Kouwenhoven, L.P. (author), Zwiller, V. (author)Nanowire waveguides with controlled shape are promising for engineering the collection efficiency of quantum light sources. We investigate the exciton lifetime in individual InAsP quantum dots, perfectly positioned on-axis of InP nanowire waveguides. We demonstrate control over the quantum dot spontaneous emission by varying the nanowire...journal article 2012
- document
-
Wang, J. (author), Plissard, S. (author), Hocevar, M. (author), Vu, T.T.T. (author), Zehender, T. (author), Immink, G.G.W. (author), Verheijen, M.A. (author), Haverkort, J. (author), Bakkers, E.P.A.M. (author)We investigate the growth of vertically standing [100] zincblende InP nanowire (NW) arrays on InP (100) substrates in the vapor-liquid-solid growth mode using low-pressure metal-organic vapor-phase epitaxy. Precise positioning of these NWs is demonstrated by electron beam lithography. The vertical NW yield can be controlled by different...journal article 2012
- document
-
Diedenhofen, S.L. (author), Algra, R.E. (author), Bakkers, E.P.A.M. (author), Gómez Rivas, J. (author)The propagation of light in layers of vertically aligned nanowires is determined by their unique and extreme optical properties. Depending on the nanowire filling fraction and their diameter, layers of nanowires form strongly birefringent media. This large birefringence gives rise to sharp angle dependent peaks in polarized reflection. We...journal article 2011
- document
- Bakkers, E.P.A.M. (author) public lecture 2011
- document
-
Van Kouwen, M.P. (author), Van Weert, M.H.M. (author), Reimer, M.E. (author), Akopian, N. (author), Perinetti, U. (author), Algra, R.E. (author), Bakkers, E.P.A.M. (author), Kouwenhoven, L.P. (author), Zwiller, V. (author)We report InP nanowire photodetectors with a single InAsP quantum dot as light absorbing element. With excitation above the InP band gap, the nanowire photodetectors are efficient (quantum efficiency of 4%). Under resonant excitation of the quantum dot, the photocurrent amplitude depends on the linear polarization direction of the incident light...journal article 2010
- document
-
Van Weert, M.H.M. (author), Den Heijer, M. (author), Van Kouwen, M.P. (author), Algra, R.E. (author), Bakkers, E.P.A.M. (author), Kouwenhoven, L.P. (author), Zwiller, V. (author)We report voltage dependent photoluminescence experiments on single indium arsenide phosphide (InAsP) quantum dots embedded in vertical surround-gated indium phosphide (InP) nanowires. We show that by tuning the gate voltage, we can access different quantum dot charge states. We study the anisotropic exchange splitting by polarization analysis,...journal article 2010
- document
-
Nadj-Perge, S. (author), Frolov, S.M. (author), Van Tilburg, J.W.W. (author), Danon, J. (author), Nazarov, Y.V. (author), Algra, R. (author), Bakkers, E.P.A.M. (author), Kouwenhoven, L.P. (author)We have achieved the few-electron regime in InAs nanowire double quantum dots. Spin blockade is observed for the first two half-filled orbitals, where the transport cycle is interrupted by forbidden transitions between triplet and singlet states. Partial lifting of spin blockade is explained by spin-orbit and hyperfine mechanisms that enable...journal article 2010
- document
-
Van Tilburg, J.W.W. (author), Algra, R.E. (author), Immink, W.G.G. (author), Verheijen, M. (author), Bakkers, E.P.A.M. (author), Kouwenhoven, L.P. (author)We report the growth and characterization of InAs nanowires capped with a 0.5–1 nm epitaxial InP shell. The low-temperature field-effect mobility is increased by a factor 2–5 compared to bare InAs nanowires. We extract the highest low-temperature peak electron mobilities obtained for nanowires to this date, exceeding 20 000 cm2 V s?1. The...journal article 2010