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Heuck, F.C.A. (author)In this thesis, sub-10 µm fluidic systems with integrated electrodes for pumping and sensing in nanotechnology applications were developed and analyzed. This work contributes to the development of the scanning ion pipette (SIP), a tool to investigate surface changes on the nanometer scale induced by locally administering chemically or bio-active...doctoral thesis 2010
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Goetz, W. (author), Pike, W.T. (author), Hviid, S.F. (author), Madsen, M.B. (author), Morris, R.V. (author), Hecht, M.H. (author), Staufer, U. (author), Leer, K. (author), Sykulska, H. (author), Hemmig, E. (author), Marshall, J. (author), Morookian, J.M. (author), Parrat, D. (author), Vijendran, S. (author), Bos, B.J. (author), El Maarry, M.R. (author), Keller, H.U. (author), Kramm, R. (author), Markiewicz, W.J. (author), Drube, L. (author), Blaney, D. (author), Arvidson, R.E. (author), Bell, J.F. (author), Reynolds, R. (author), Smith, P.H. (author), Woida, P. (author), Woida, R. (author), Tanner, R. (author)The optical microscope onboard the Phoenix spacecraft has returned color images (4 ?m pixel?1) of soils that were delivered to and held on various substrates. A preliminary taxonomy of Phoenix soil particles, based on color, size, and shape, identifies the following particle types [generic names in brackets]: (1) reddish fines, mostly unresolved...journal article 2010
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Knab, J.R. (author), Adam, A.J.L. (author), Chakkittakandy, R. (author), Planken, P.C.M. (author)Using near-field, terahertz time-domain spectroscopy (THz-TDS), we investigate how the addition of a dielectric material into a subwavelength-diameter, cylindrical waveguide affects its transmission properties. The THz electric near-field is imaged with deep subwavelength resolution as it emerges from filled and unfilled waveguides....journal article 2010
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Li, D.U. (author), Arlt, J. (author), Richardson, J. (author), Walker, R. (author), Buts, A. (author), Stoppa, D. (author), Charbon, E. (author), Henderson, R. (author)A compact real-time fluorescence lifetime imaging microscopy (FLIM) system based on an array of low dark count 0.13?m CMOS singlephoton avalanche diodes (SPADs) is demonstrated. Fast background-insensitive fluorescence lifetime determination is achieved by use of a recently proposed algorithm called ‘Integration for Extraction Method’ (IEM) [J....journal article 2010
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Wnuk, J.D. (author), Gorham, J.M. (author), Rosenberg, S.G. (author), Madey, T.E. (author), Hagen, C.W. (author), Fairbrother, D.H. (author)Focused electron beam induced processing (FEBIP) of volatile organometallic precursors has become an effective and versatile method of fabricating metal-containing nanostructures. However, the electron stimulated decomposition process responsible for the growth of these nanostructures traps much of the organic content from the precursor’s ligand...journal article 2010
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Krishnan, G. (author), Kooi, B.J. (author), Palasantzas, G. (author), Pivak, Y. (author), Dam, B. (author)In this work we present a unique transmission electron microscopy study of the thermal stability of gas phase synthesized Mg nanoparticles, which have attracted strong interest as high capacity hydrogen storage materials. Indeed, Mg nanoparticles with a MgO shell ( ? 3?nm thick) annealed at 300?°C show evaporation, void formation, and void...journal article 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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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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Zonnevylle, A.C. (author), Hagen, C.W. (author), Kruit, P. (author), Valenti, M. (author), Schmidt-Ott, A. (author)Positioning of charged nanoparticles with the help of charge patterns in an insulator substrate is a known method. However, the creation of charge patterns with a scanning electron microscope for this is relatively new. Here a scanning electron microscope is used for the creation of localized charge patterns in an insulator, while a glowing wire...journal article 2009
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Botman, A. (author), Hagen, C.W. (author), Li, J. (author), Thiel, B.L. (author), Dunn, K.A. (author), Mulders, J.J.L. (author), Randolph, S. (author), Toth, M. (author)The material grown in a scanning electron microscope by electron beam-induced deposition (EBID) using Pt(PF3)4 precursor is shown to be electron beam sensitive. The effects of deposition time and postgrowth electron irradiation on the microstructure and resistivity of the deposits were assessed by transmission electron microscopy, selected area...journal article 2009
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Gaitas, A. (author), Zhu, W. (author), Gulari, N. (author), Covington, E. (author), Kurdak, C. (author)Metal microbolometers, used in scanning thermal microscopy, were microfabricated from <20?nm titanium thin films on SiO2/Si3N4/SiO2 cantilevers. These thin films are near the metal-insulator transition regime such that as the film thickness decreases—the resistance increases and the current-voltage characteristics cross over from sublinear to...journal article 2009
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Maas, D. (author), Van Veldhoven, E. (author), Chen, P. (author), Sidorkin, V. (author), Salemink, H. (author), Van der Drift, E. (author), Alkemade, P. (author)The recently introduced helium ion microscope (HIM) is capable of imaging and fabrication of nanostructures thanks to its sub-nanometer sized ion probe [1,2]. The unique interaction of the helium ions with the sample material provides very localized secondary electron emission, thus providing a valuable signal for high-resolution imaging as well...conference paper 2009
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Zwanenburg, F.A. (author), Van Loon, A.A. (author), Steele, G.A. (author), Rijmenam, C.E.W.M. (author), Balder, T. (author), Fang, Y. (author), Lieber, C.M. (author), Kouwenhoven, L.P. (author)We report the realization of extremely small single quantum dots in p-type silicon nanowires, defined by Schottky tunnel barriers with Ni and NiSi contacts. Despite their ultrasmall size the NiSi–Si–NiSi nanowire quantum dots readily allow spectroscopy of at least ten consecutive holes, and additionally they display a pronounced excited-state...journal article 2009
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- Dietrich, H.R.C. (author), Rieger, B. (author), Wiertz, F.G.M. (author), De Groote, F.H. (author), Heering, H.A. (author), Young, I.T. (author), Garini, Y. (author) journal article 2009
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Nielsen, K. (author), Rasmussen, H.K. (author), Adam, A.J.L. (author), Planken, P.C.M. (author), Bang, O. (author), Jepsen, P.U. (author)We report on a new class of polymer photonic crystal fibers for low-loss guidance of THz radiation. The use of the cyclic olefin copolymer Topas, in combination with advanced fabrication technology, results in bendable THz fibers with unprecedented low loss and low material dispersion in the THz regime.We demonstrate experimentally how the...journal article 2009
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Kumar, V. (author)This thesis is a step towards development of quantitative parallel beam electron nano-diffraction (PBED). It is focused on the superstructure determination of zig-zag and zig-zig NaxCoO2 and analysis of charge distribution in the two polymorphs Nb12O29 using PBED. It has been shown that quantitative electron nano-diffraction (parallel beam) has...doctoral thesis 2009
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Eijt, S.W.H. (author), Kind, R. (author), Singh, S. (author), Schut, H. (author), Legerstee, W.J. (author), Hendrikx, R.W.A. (author), Svetchnikov, V.L. (author), Westerwaal, R.J. (author), Dam, B. (author)We report positron depth-profiling studies on the hydrogen sorption behavior and phase evolution of Mg-based thin films. We show that the main changes in the depth profiles resulting from the hydrogenation to the respective metal hydrides are related to a clear broadening in the observed electron momentum densities in both Mg and Mg2Ni films....journal article 2009
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Faradzhev, N. (author), Sidorkin, V. (author)The authors report on the interaction of atomic hydrogen with Sn and thin Ru film at room temperature. The study is done using a combination of photoelectron and low energy ion scattering spectroscopies as well as scanning electron microscopy. The adsorption of hydrogen on a Sn surface leads to the formation of stannane (SnH4), which...journal article 2009
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Vermolen, B.J. (author)Cancer is one of the most well-known groups of diseases that finds its cause in cells having chromosomal aberrations. How and why these aberrations can occur is one of the most important questions asked in modern molecular biology. In the last decades it has become clear that gene regulation in the nucleus, where the chromosomes reside, is...doctoral thesis 2009
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Adam, A.J.L. (author), Brok, J.M. (author), Seo, M.A. (author), Ahn, K.J. (author), Kim, D.S. (author), Kang, J.H. (author), Park, Q.H. (author), Nagel, M. (author), Planken, P.C.M. (author)An erratum is presented to correct an error in the discussion section of [Opt. Express. 16, 7407-7417 (2008)] and to add a relevant reference on earlier work.journal article 2008