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Pfeiffer, T.V. (author)Nanostructuring of functional materials is an essential part in the design of energy related devices – but the industrial tools we have to make these materials are lacking. This dissertation explores the green, flexible, and scalable spark discharge process for the fabrication of complex nanostructured materials, and the application of said...doctoral thesis 2014
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Garcia-Tamayo, E. (author)The remarkable physicist Richard P. Feynman once said, more than fifty years ago: ”the principles of physics, as far as I can see, do not speak against the possibility of maneuvering things atom by atom. It is not an attempt to violate any laws; it is something, in principle, that can be done; but in practice, it has not been done because we are...doctoral thesis 2014
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Seshan, V. (author), Arroyo, C.R. (author), Castellanos-Gomez, A. (author), Prins, F. (author), Perrin, M.L. (author), Janssens, S.D. (author), Haenen, K. (author), Nesládek, M. (author), Sudhölter, E.J.R. (author), De Smet, L.C.P.M. (author), Van der Zant, H.S.J. (author), Dulic, D. (author)A high-current annealing technique is used to fabricate nanogaps and hybrid diamond/graphite structures in boron-doped nanocrystalline diamond films. Nanometer-sized gaps down to ?1?nm are produced using a feedback-controlled current annealing procedure. The nanogaps are characterized using scanning electron microscopy and electronic transport...journal article 2012
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Ramanandan, G.K.P. (author), Ramakrishnan, G. (author), Planken, P.C.M. (author)Terahertz (THz) transmission spectroscopy is used to measure the oxidation kinetics of copper thin films evaporated on silicon substrates. The transmission of broadband THz pulses from 1 to 7 THz through the copper film is measured while it gets oxidized at an elevated temperature in ambient air. The change in the transmitted THz electric field...journal article 2012
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Alkemade, P.F.A. (author), Miro, H. (author), Van Veldhoven, E. (author), Maas, D.J. (author), Smith, D.A. (author), Rack, P.D. (author)The sub-nanometer beam of a helium ion microscope was used to study and optimize helium-ion beam induced deposition of PtC nanopillars with the (CH3)3Pt(CPCH3) precursor. The beam current, beam dwell time, precursor refresh time, and beam focus have been independently varied. Continuous beam exposure resulted in narrow but short pillars, while...journal article 2011
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De Boer, W.D.A.M. (author), Trinh, M.T. (author), Timmerman, D. (author), Schins, J.M. (author), Siebbeles, L.D.A. (author), Greogorkiewicz, T. (author)We report on investigations of optical generation of carriers in Si nanocrystals embedded in SiO2 matrix by time-resolved induced absorption technique. Results obtained for excitation below and above twice the bandgap energy h??<?2Eg and h??>?2Eg show very similar decay characteristics (within ?resolution ? 100 fs). When intensity of the signal...journal article 2011
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Van der Sar, T. (author), Hagemeier, J. (author), Pfaff, W. (author), Heeres, E.C. (author), Thon, S.M. (author), Kim, H. (author), Petroff, P.M. (author), Oosterkamp, T.H. (author), Bouwmeester, D. (author), Hanson, R. (author)Controlling the interaction of a single quantum emitter with its environment is a key challenge in quantum optics. Here, we demonstrate deterministic coupling of single nitrogen-vacancy (NV) centers to high-quality photonic crystal cavities. We preselect single NV centers and position their 50-nm-sized host nanocrystals into the mode maximum of...journal article 2011
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Alkemade, P.F.A. (author), Chen, P. (author), Van Veldhoven, E. (author), Maas, D. (author)An analytical model for the growth of nanopillars by helium ion-beam-induced deposition is presented and compared to experimental data. This model describes the competition between pillar growth in vertical and lateral directions. It assumes that vertical growth is induced by incident primary ions and type-1 secondary electrons, whereas lateral...journal article 2010
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Valvo, M. (author)This PhD thesis focuses on the synthesis of nanostructured materials via an aerosol-assisted route based on electrospraying of liquid precursors. Electrospraying is a powerful technique for the production of nearly-monodispersed, highly-charged droplets. The possibility of tailoring the droplet size, as well as coupling the process to different...doctoral thesis 2010
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Wnuk, J.D. (author), Gorham, J.M. (author), Rosenberg, S.G. (author), Van Dorp, W.F. (author), Madey, T.E. (author), Hagen, C.W. (author), Fairbrother, D.H. (author)Electron beam induced deposition of organometallic precursors has emerged as an effective and versatile method for creating two-dimensional and three-dimensional metal-containing nanostructures. However, to improve the properties and optimize the chemical composition of nanostructures deposited in this way, the electron stimulated decomposition...journal article 2010
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Verduijn, J. (author), Tettamanzi, G.C. (author), Lansbergen, G.P. (author), Collaert, N. (author), Biesemans, S. (author), Rogge, S. (author)In this letter, we describe the observation of the interference of conduction paths induced by two donors in a nanoscale silicon transistor, resulting in a Fano resonance. This demonstrates the coherent exchange of electrons between two donors. In addition, the phase difference between the two conduction paths can be tuned by means of a magnetic...journal article 2010
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Castaldo, V. (author), Hagen, C.W. (author), Kruit, P. (author), Van Veldhoven, E. (author), Maas, D. (author)The determination of the quality of an imaging system is not an easy task for, in general, at least three parameters, strictly interdependent, concur in defining it: resolution, contrast, and signal-to-noise ratio. The definition of resolution itself in scanning microscopy is elusive and the case of scanning ion microscopy is complicated by the...journal article 2009
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Simonin, L. (author)The growing interest during the past decades for mobile devices, like laptops, cellular phones, MP3 players, etc., is impressive. moreover, the concerns about climate changes have increased the worldwide interest for electrical and hybrid vehicles and intermittent sustainable energies, like solar and wind energy. These development have...doctoral thesis 2009
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Bretzel, S. (author), Bauer, G.E.W. (author), Tserkovnyak, Y. (author), Brataas, A. (author)The Barnett effect refers to the magnetization induced by rotation of a demagnetized ferromagnet. We describe the location and stability of stationary states in rotating nanostructures using the Landau–Lifshitz–Gilbert equation. The conditions for an experimental observation of the Barnett effect in different materials and sample geometries are...journal article 2009
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Van der Sar, T. (author), Heeres, E.C. (author), Dmochowski, G.M. (author), De Lange, G. (author), Robledo, L. (author), Oosterkamp, T.H. (author), Hanson, R. (author)Precise control over the position of a single quantum object is important for many experiments in quantum science and nanotechnology. We report on a technique for high-accuracy positioning of individual diamond nanocrystals. The positioning is done with a home-built nanomanipulator under real-time scanning electron imaging, yielding an accuracy...journal article 2009
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Prins, F. (author), Hayashi, T. (author), De Vos van Steenwijk, B.J.A. (author), Gao, B. (author), Osorio, E.A. (author), Muraki, K. (author), Van der Zant, H.S.J. (author)We present a method to make Pt nanometer-spaced electrodes that are free of metallic particles and stable at ambient conditions. The nanogaps are fabricated using feedback-controlled electromigration to form few-atom contacts. When performing this procedure at elevated temperatures (>420?K), the Pt contacts undergo self-breaking so that...journal article 2009
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Eijt, S.W.H. (author), Mijnarends, P.E. (author), Van Schaarenburg, L.C. (author), Houtepen, A.J. (author), Vanmaekelbergh, D. (author), Barbiellini, B. (author), Bansil, A. (author)The effect of temperature controlled annealing on the confined valence electron states in CdSe nanocrystal arrays, deposited as thin films, was studied using two-dimensional angular correlation of annihilation radiation. A reduction in the intensity by ?35% was observed in a feature of the positron annihilation spectrum upon removal of the...journal article 2009
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Singh, S. (author), Eijt, S.W.H. (author)We report ab initio calculations based on density-functional theory, of the vacancy-mediated hydrogen migration energy in bulk NaH and near the NaH(001) surface. The estimated rate of the vacancy mediated hydrogen transport, obtained within a hopping diffusion model, is consistent with the reaction rates of H-D exchange in nano-NaH at the...journal article 2008
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Botman, A. (author), Hesselberth, M. (author), Mulders, J.J.L. (author)Focused electron-beam-induced deposition (EBID) allows the rapid fabrication of three-dimensional nanodevices and metallic wiring of nanostructures, and is a promising technique for many applications in nanoresearch. The authors present two topics on platinum-containing nanostructures created by EBID. First, they report on a TEM study of the...journal article 2008
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Prokhorov, V.G. (author), Hyun, Y.H. (author), Park, J.S. (author), Kim, J.B. (author), Kim, G.H. (author), Lee, Y.S. (author), Lee, Y.P. (author), Svetchnikov, V.L. (author)The microstructural and magnetic properties of amorphous, nanoclustered, and self-organized bilayer Nd0.5Sr0.5MnO3 films, prepared by rf magnetron sputtering, are investigated. The amorphous film was found to be a typical paramagnet with free motion of the individual Mn spins, and the magnetic properties are well described on the basis of the...journal article 2008
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