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Unravelling the structural and chemical features influencing deformation-induced martensitic transformations in steels

Tirumalasetty, G.K. (author), Van Huis, M.A. (author), Kwakernaak, C. (author), Sietsma, J. (author), Sloof, W.G. (author), Zandbergen, H.W. (author)

A combination of Electron Back-Scattered Diffraction (EBSD) and high-sensitivity Electron Probe Micro-Analysis (EPMA) was used to correlate the changes in microstructural features upon deformation with local chemical composition in Transformation-Induced Plasticity steels. A novel cleaning procedure was developed that allows complete monitoring...

journal article 2013

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2D atomic mapping of oxidation states in transition metal oxides by scanning transmission electron microscopy and electron energy-loss spectroscopy

Tan, H. (author), Turner, S. (author), Yücelen, E. (author), Verbeeck, J. (author), Van Tendeloo, G. (author)

Using a combination of HAADF-STEM imaging and atomically resolved EELS in an aberration-corrected TEM we demonstrate the possibility of 2D atom by atom valence mapping in the mixed valence compound . The ELNES from and cation sites are similar to those of and references. Comparison with simulations shows that even though a local interpretation...

journal article 2011

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Bacterial growth and motility in sub-micron constrictions

Männik, J. (author), Driessen, R. (author), Galajda, P. (author), Keymer, J.E. (author), Dekker, C. (author)

In many naturally occurring habitats, bacteria live in micrometer-size confined spaces. Although bacterial growth and motility in such constrictions is of great interest to fields as varied as soil microbiology, water purification, and biomedical research, quantitative studies of the effects of confinement on bacteria have been limited. Here, we...

journal article 2009

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Computation of mutual fitness by competing bacteria

Keymer, J.E. (author), Galajda, P. (author), Lambert, G. (author), Liao, D. (author), Austin, R.H. (author)

Competing populations in shared spaces with nonrenewable resources do not necessarily wage a battle for dominance at the cost of extinction of the less-fit strain if there are fitness advantages to the presence of the other strain. We report on the use of nanofabricated habitat landscapes to study the population dynamics of competing wild type...

journal article 2008

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InSitu Reduction of Charge Noise in GaAs/AlxGa1-xAs Schottky-Gated Devices

Buizert, C. (author), Koppens, F.H.L. (author), Pioro-Ladriere, M. (author), Tranitz, H.P. (author), Vink, I.T. (author), Tarucha, S. (author), Wegscheider, W. (author), Vandersypen, L.M.K. (author)

We show that an insulated electrostatic gate can be used to strongly suppress ubiquitous background charge noise in Schottky-gated GaAs=AlGaAs devices. Via a 2D self-consistent simulation of the conduction band profile we show that this observation can be explained by reduced leakage of electrons from the Schottky gates into the semiconductor...

journal article 2008

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Single-Molecule Observation of Anomalous Electrohydrodynamic Orientation of Microtubules

Van den Heuvel, M.G.L. (author), Bondesan, R. (author), Lagomarsino, M.C. (author), Dekker, C. (author)

We use fluorescence microscopy to measure the orientation and shape of microtubules—which serve as a model system for semiflexible rods—that are electrophoretically driven. Surprisingly, a bimodal orientation distribution is observed, with microtubules in either parallel or perpendicular orientations to the electric field. The occupancy of these...

journal article 2008

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Conformation and Dynamics of DNA Confined in Slitlike Nanofluidic Channels

Bonthuis, D.J. (author), Meyer, C. (author), Stein, D. (author), Dekker, C. (author)

Using laser fluorescence microscopy, we study the shape and dynamics of individual DNA molecules in slitlike nanochannels confined to a fraction of their bulk radius of gyration. With a confinement size spanning 2 orders of magnitude, we observe a transition from the de Gennes regime to the Odijk regime in the scaling of both the radius of...

journal article 2008

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Triplet Josephson Effect with Magnetic Feedback in a Superconductor-Ferromagnet Heterostructure

Braude, V. (author), Blanter, Y.M. (author)

journal article 2008

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Motor step size and ATP coupling efficiency of the dsDNA translocase EcoR124I

Seidel, R. (author), Bloom, J.G.P. (author), Dekker, C. (author), Szczelkun, M.D. (author)

The Type I restriction-modification enzyme EcoR124I is an archetypical helicase-based dsDNA translocase that moves unidirectionally along the 3'–5' strand of intact duplex DNA. Using a combination of ensemble and single-molecule measurements, we provide estimates of two physicochemical constants that are fundamental to a full description of...

journal article 2008

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Nuclear Tuning and Detuning of the Electron Spin Resonance in a Quantum Dot: Theoretical Consideration

Danon, J. (author), Nazarov, Y.V. (author)

We study nuclear spin dynamics in a quantum dot close to the conditions of electron spin resonance. We show that at a small frequency mismatch, the nuclear field detunes the resonance. Remarkably, at larger frequency mismatch, its effect is opposite: The nuclear system is bistable, and in one of the stable states, the field accurately tunes the...

journal article 2008

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End-joining long nucleic acid polymers

Van den Hout, M. (author), Hage, S. (author), Dekker, C. (author), Dekker, N.H. (author)

Many experiments involving nucleic acids require the hybridization and ligation of multiple DNA or RNA molecules to form a compound molecule. When one of the constituents is single stranded, however, the efficiency of ligation can be very low and requires significant individually tailored optimization. Also, when the molecules involved are very...

journal article 2008

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An RNA toolbox for single-molecule force spectroscopy studies

Vilfan, I.D. (author), Kamping, W. (author), Van den Hout, M. (author), Candelli, A. (author), Hage, S. (author), Dekker, N.H. (author)

Precise, controllable single-molecule force spectroscopy studies of RNA and RNA-dependent processes have recently shed new light on the dynamics and pathways of RNA folding and RNAenzyme interactions. A crucial component of this research is the design and assembly of an appropriate RNA construct. Such a construct is typically subject to several...

journal article 2007

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Real-time assembly and disassembly of human RAD51 filaments on individual DNA molecules

Van der Heijden, T. (author), Seidel, R. (author), Modesti, M. (author), Kanaar, R. (author), Wyman, C. (author), Dekker, C. (author)

The human DNA repair protein RAD51 is the crucial component of helical nucleoprotein filaments that drive homologous recombination. The molecular mechanistic details of how this structure facilitates the requisite DNA strand rearrangements are not known but must involve dynamic interactions between RAD51 and DNA. Here, we report the real-time...

journal article 2007

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Stimulated terahertz stokes emission of silicon crystals doped with antimony donors

Pavlov, S.G. (author), Hubers, H.W. (author), Hovenier, J.N. (author), Klaassen, T.O. (author), Carder, D.A. (author), Phillips, P.J. (author), Redlich, B. (author), Riemann, H. (author), Zhukavin, R.Kh. (author), Shastin, V.N. (author)

journal article 2006

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Cl2/O2-inductively coupled plasma etching of deep hole-type photonic crystals in InP

Carlström, C.F. (author), Van Der Heijden, R. (author), Karouta, F. (author), Van Der Heijden, R.W. (author), Salemink, H.W.M. (author), Van der Drift, E. (author)

journal article 2006

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Full counting statistics of noncommuting variables: The case of spin counts

Di Lorenzo, A. (author), Campagnano, G. (author), Nazarov, Y.V. (author)

journal article 2006

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Charge inversion at high ionic strength studied by streaming currents

van der Heyden, F.H.J. (author), Stein, D. (author), Besteman, K. (author), Lemay, S.G. (author), Dekker, C. (author)

journal article 2006

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Using a quantum dot as a high-frequency shot noise detector

Onac, E. (author), Balestro, F. (author), vanBeveren, L.H.W. (author), Hartmann, U. (author), Nazarov, Y.V. (author), Kouwenhoven, L.P. (author)

journal article 2006

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Shot-noise detection in a carbon nanotube quantum dot

Onac, E. (author), Balestro, F. (author), Trauzettel, B. (author), Lodewijk, C.F.J. (author), Kouwenhoven, L.P. (author)

journal article 2006

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Antenna model for wire lasers

Orlova, E.E. (author), Hovenier, J.N. (author), Klaassen, T.O. (author), Kasalynas, I. (author), Adam, A.J.L. (author), Gao, J.R. (author), Klapwijk, T.M. (author), Williams, B.S. (author), Kumar, S. (author), Hu, Q. (author), Reno, J.L. (author)

journal article 2006