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Sparen voor de woningaankoop in het land van de hoge leningen?

Dol, C.P. (author), Van der Heijden, H.M.H. (author), Boelhouwer, P.J. (author)

Als gevolg van het verstrekken van hoge leningen ten opzichte van de w/aarde van de woning, heeft de recente prijsdaling van koopwoningen ertoe geleid dat vooral recente kopers 'onderwater' staan. Dit heeft de risicoperceptie van vele eigenaar bewoners gewijzigd omdat een potentiële restschuld een doorverhuizing belemmert. Daarnaast komt deze...

journal article 2016

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Sparen of lenen? De ontwikkeling van de ratio achter het bouwsparen

Dol, C.P. (author), Van der Heijden, H.M.H. (author)

Nu er door de verlaging van de maximale LTV gespaard moet worden voor de aanschaf van een woning, neemt de roep toe om de introductie van een gesubsidieerde vorm van bouwsparen. Een kijkje over de grens en in de geschiedenis laat zien dat het traditionele bouwsparen niet de enige manier is waarop de overheid sparen voor de aanschaf van een eigen...

journal article 2014

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The Impact of Intelligent Transport Systems on Office Location Attractiveness: Testing the Predictive Validity of a Location Choice Model

Argiolu, R. (author), Van der Heijden, R. (author), Bos, I. (author), Marchau, V.A.W.J. (author)

In recent years, a model was developed describing effects of Intelligent Transport Systems (ITS) on location preferences of office-keeping organisations in urbanised. The model is based on a Hierarchical Information Integration Approach, using Stated Preference data. The model indicates that ITS significantly contribute to office location...

journal article 2013

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Balanced ternary addition using a gated silicon nanowire

Mol, J.A. (author), Van der Heijden, J. (author), Verduijn, J. (author), Klein, M. (author), Remacle, F. (author), Rogge, S. (author)

Ternary logic has the lowest cost of complexity, here, we demonstrate a CMOS hardware implementation of a ternary adder using a silicon metal-on-insulator single electron transistor. Gate dependent rectifying behavior of a single electron transistor (SET) results in a robust three-valued output as a function of the potential of the single...

journal article 2011

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European Sustainable Construction Regulation: Homogeneity and Attention

Van der Heijden, J. (author), Van Bueren, E.M. (author)

Understanding the negative impact of the construction industry and the built environment on the ecological environment, the European Commission (EC) aims to harmonise and improve sustainable construction regulatory frameworks in Member States of the European Union. This paper discusses the topics of sustainable construction that are currently...

journal article 2011

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Western European housing systems and the impact of the international financial crisis

Van der Heijden, H.M.H. (author), Dol, K. (author), Oxley, M. (author)

The central proposition advanced in this paper is that differences in the structure of housing systems, and specifically the differences between dynamic and static housing systems, are crucial to an explanation of the varying impacts between countries of the international financial crisis. The proposition is illustrated with reference to Ireland...

journal article 2011

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Noord/Zuidlijn Amsterdam

Ten Heuvelhof, E.F. (author), Van der Heijden, J. (author)

journal article 2010

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Compact Mach-Zehnder interferometer based on self-collimation of light in a silicon photonic crystal

Nguyen, H.M. (author), Dundar, M.A. (author), Van der Heijden, R.W. (author), Van der Drift, E.W.J.M. (author), Salemink, H.W.M. (author), Rogge, S. (author), Caro, J. (author)

We demonstrate a compact silicon photonic crystal Mach-Zehnder interferometer operating in the self-collimation regime. By tailoring the photonic band structure such as to produce self-collimated beams, it is possible to design beam splitters and mirrors and combine these to a 20 × 20 ?m2 format. With transmission spectroscopy we find a...

journal article 2010

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Mix op maat: De gevolgen van privatisering in Australië en Canada

Van der Heijden, J.J. (author)

journal article 2010

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Birefringence-induced mode-dependent tuning of liquid crystal infiltrated InGaAsP photonic crystal nanocavities

Dündar, M.A. (author), Kicken, H.H.J.E. (author), Silov, A.Y. (author), Nötzel, R. (author), Karouta, F. (author), Salemink, H.W.M. (author), Van der Heijden, R.W. (author)

Mode-dependent shifts of resonant frequencies of cavities in liquid crystal (LC) infiltrated planar photonic crystals (PhC) are experimentally observed when the temperature is varied across the LC ordering transition. The shifts can be in opposite directions, even for two very similar nearly degenerate modes. The behavior is attributed to the...

journal article 2009

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Wavelength-sized cavities in high aspect InP/InGaAsP/InP photonic crystals

Kicken, H.H.J.E. (author), Barbu, I. (author), Van der Heijden, R.W. (author), Karouta, F. (author), Nötzel, R. (author), Van der Drift, E. (author), Salemink, H.W.M. (author)

The photonic properties of two classes of wavelength-sized cavities are reported for deeply etched InP/InGaAsP/InP planar photonic crystals. The high aspect, deeply etched structures are studied as potential building blocks for nonmembrane type photonic devices in standard InP photonic integrated circuits. The first class consists of cavities of...

journal article 2009

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A 90-W peak power GaN outphasing amplifier with optimum input signal conditioning

Qureshi, J.H. (author), Pelk, M.J. (author), Marchetti, M. (author), Neo, W.C.E. (author), Gajadharsing, J.R. (author), Van der Heijden, M.P. (author), De Vreede, L.C.N. (author)

A 90-W peak-power 2.14-GHz improved GaN outphasing amplifier with 50.5% average efficiency for wideband code division multiple access (W-CDMA) signals is presented. Independent control of the branch amplifiers by two in-phase/quadrature modulators enables optimum outphasing and input power leveling, yielding significant improvements in gain,...

journal article 2009

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Wavelength-sized, tunable nanocavity in deeply etched InP/InGaAsP/InP photonic crystals

Kicken, H.H.J.E. (author), Barbu, I. (author), Van der Heijden, R.W. (author), Karouta, F. (author), Nötzel, R. (author), Van der Drift, E.W.J.M. (author), Salemink, H.W.M. (author)

Wavelength-sized point defect cavities coupled to access waveguides are reported for deeply etched InP/InGaAsP/InP two-dimensional photonic crystals. The observed quality factor of 60 is comparable to those found for one-row defect Fabry–Perot cavities and for simple point defect cavities in membranes. The quality factor was changed by varying...

journal article 2009

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Dynamics of RecA filaments on single-stranded DNA

Van Loenhout, M.T.J. (author), Van der Heijden, T. (author), Kanaar, R. (author), Wyman, C. (author), Dekker, C. (author)

RecA, the key protein in homologous recombination, performs its actions as a helical filament on single-stranded DNA (ssDNA). ATP hydrolysis makes the RecA–ssDNA filament dynamic and is essential for successful recombination. RecA has been studied extensively by single-molecule techniques on double-stranded DNA (dsDNA). Here we directly probe...

journal article 2009

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Photoluminescence enhancement in thin films of PbSe nanocrystals

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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Comparative study of Cl2, Cl2/O2, and Cl2/N2 inductively coupled plasma processes for etching of high-aspect-ratio photonic-crystal holes in InP

Carlström, C.F. (author), Van der Heijden, R. (author), Andriesse, M.S.P. (author), Karouta, F. (author), Van der Heijden, R.W. (author), Van der Drift, E.W.J.M. (author), Salemink, H.W.M. (author)

An extensive investigation has been performed on inductively coupled plasma etching of InP. An important motivation for this work is the fabrication of high-aspect-ratio holes for photonic crystals. The essential chemistry is based on Cl2 with the addition of N2 or O2 for sidewall passivation. The influence of different process parameters such...

journal article 2008

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Transmission measurement of the photonic band gap of GaN photonic crystal slabs

Caro, J. (author), Roeling, E.M. (author), Rong, B. (author), Nguyen, H.M. (author), Van der Drift, E.W.J.M. (author), Rogge, S. (author), Karouta, F. (author), Van der Heijden, R.W. (author), Salemink, H.W.M. (author)

A high-contrast-ratio (30 dB) photonic band gap in the near-infrared transmission of hole-type GaN two-dimensional photonic crystals (PhCs) is reported. These crystals are deeply etched in a 650 nm thick GaN layer grown on sapphire. A comparison of the measured spectrum with finite difference time domain simulations gives quantitative agreement...

journal article 2008

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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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InP-based two-dimensional photonic crystals filled with polymers

Van der Heijden, R. (author), Carlström, C.F. (author), Snijders, J.A.P. (author), Van der Heijden, R.W. (author), Karouta, F. (author), Nötzel, R. (author), Salemink, H.W.M. (author), Kjellander, B.K.C. (author), Bastiaansen, C.W.M. (author), Broer, D.J. (author), Van der Drift, E. (author)

Polymer filling of the air holes of indium-phosphide-based two-dimensional photonic crystals is reported. After infiltration of the holes with a liquid monomer and solidification of the infill in situ by thermal polymerization, complete filling is proven using scanning electron microscopy. Optical transmission measurements of a filled photonic...

journal article 2006

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Advanced driver assistance systems: Behavioural implications of some recent developments

Van der Heijden, R.E.C.M. (author), Marchau, V.A.W.J. (author)

The application of Intelligent Transportation Systems (ITS), in particular Advanced Driver Assistance Systems (ADAS), is expected to improve the performance of road transportation significantly. Public policy makers, among others, are therefore increasingly interested in the implementation of these systems. Available knowledge on various...

journal article 2005