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Eijt, S.W.H. (author), De Roode, J. (author), Schut, H. (author), Kooi, B.J. (author), De Hosson, J.T.M. (author)
Coimplantation of Zn and O ions into a single crystalline MgO and subsequent thermal annealing were applied in the synthesis of ZnO nanocrystals. Electron microscopy showed that rocksalt instead of wurtzite ZnO stabilizes for relatively large nanocrystals up to ~15?nm, resulting from its small lattice mismatch with MgO of ~1.7%. The vacancies...
journal article 2007
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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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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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Kervennic, Y.V. (author), Van der Zant, H.S.J. (author), Morpurgo, A.F. (author), Gurevich, L. (author), Kouwenhoven, L.P. (author)
We have fabricated pairs of platinum electrodes with separation between 20 and 3.5 nm. Our technique combines electron beam lithography and chemical electrodeposition. We show that the measurement of the conductance between the two electrodes through the electrolyte provides an accurate and reproducible way to control their separation. We have...
journal article 2002
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Odijk, T. (author)
A scaling analysis is presented of the statistics of long DNA confined in nanochannels and nanoslits. It is argued that there are several regimes in between the de Gennes and Odijk limits introduced long ago. The DNA chain folds back on itself giving rise to a global persistence length that may be very large owing to entropic deflection....
journal article 2008
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Appleby, G.A. (author), Edgar, A. (author), Williams, G.V.M. (author), Bos, A.J.J. (author)
A glass-ceramic thermal neutron imaging plate material is reported. The material consists of a neutron sensitive 2B2O3–Li2O glass matrix containing nanocrystallites of the storage phosphor BaCl2:Eu2+. When doped with 0.5?mol?% Eu2+, the neutron induced photostimulated luminescence (PSL) conversion efficiency of the 10B enriched glass-ceramic is...
journal article 2006
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Christova, C.G. (author), Stouwdam, J.W. (author), Eijkemans, T.J. (author), Silov, A.Y. (author), Van der Heijden, R.W. (author), Kemerink, M. (author), Janssen, R.A.J. (author), Salemink, H.W.M. (author)
Remarkable photoluminescence enhancement (PLE) in submonolayer films of PbSe nanocrystals (NCs) upon continuous illumination was observed. The intensity increase from films on InP substrates was highest in vacuum, while for films on Si/SiO2 substrates the PLE was stronger in air. The magnitude of the PLE was found to depend on the excitation...
journal article 2008
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Gaitas, A. (author)
In this preliminary effort, a moving nano-heater directs a chemical vapor deposition reaction (nano-CVD) demonstrating a tip-based nanofabrication (TBN) method. Localized nano-CVD of copper (Cu) and copper oxide (CuO) on a silicon (Si) and silicon oxide (SiO2) substrate from gasses, namely sublimated copper acetylacetonate (Cu(acac)2), argon (Ar...
journal article 2013
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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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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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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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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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Blaauboer, M. (author)
Using master equations, we present an analytical solution of the time evolution of an entangled electron spin pair which can occupy 36 different quantum states in a double quantum dot nanostructure. This solution is exact, given a few realistic assumptions, and takes into account relaxation and decoherence rates of the electron spins as...
journal article 2005
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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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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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Zhuang, Y. (author), Vroubel, M. (author), Rejaei, B. (author), Burghartz, J.N. (author), Attenborough, K. (author)
A granular NiFe thin film with large in-plane magnetic anisotropy and high ferromagnetic-resonance frequency developed for radio-frequency integrated circuit (IC) applications is presented. During the deposition, three-dimensional (3D) growth occurs, yielding NiFe grains (? ? 1.0??m). Nanonuclei (? ? 30–50?nm) are observed in single NiFe grains...
journal article 2005
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Huang, Y. (author), Pandraud, G. (author), Sarro, P.M. (author)
TiO2 is an interesting and promising material for micro-/nanoelectromechanical systems (MEMS/NEMS). For high performance and reliable MEMS/NEMS, optimization of the optical characteristics, mechanical stress, and especially surface smoothness of TiO2 is required. To overcome the roughness issue of the TiO2 films due to crystallization during...
journal article 2012
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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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Tans, S.J. (author), Devoret, M.H. (author), Dai, H. (author), Thess, A. (author), Smalley, R.E. (author), Georliga, L.J. (author), Dekker, C. (author)
journal article 1997
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Schapotschnikow, P. (author), Vlugt, T.J.H. (author)
Self-assembly of capped nanocrystals (NC) attracted a lot of attention over the past decade. Despite progress in manufacturing of NC superstructures, the current understanding of their mechanical and thermodynamic stability is still limited. For further applications, it is crucial to find the origin and the magnitude of the interactions that...
journal article 2009
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