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Ten Heuvelhof, E.F. (author), Van der Heijden, J.J. (author), Broekhans, B. (author), Van der Arend, S.H. (author), Van Bueren, E.M. (author), Harteveld, C. (author), Van Ruijven, T.W.J. (author)Rapport in opdracht van het Ministerie van Verkeer en Waterstaat. Tussen 22 december 2000 en 22 december 2009 is er gewerkt aan de implementatie van de Kaderrichtlijn Water (KRW) in Nederland. In deze rapportage bespreken wij de evaluatie van de implementatie van de KRW, die wij tussen december 2009 en juni 2010 hebben uitgevoerd. In deze...report 2010
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Dündar, M.A. (author), Christova, C. (author), Silov, A.Y. (author), Karouta, F. (author), Nötzel, R. (author), Wienk, M. (author), Salemink, H. (author), Van der Heijden, R. (author)Liquid crystal (LC, Merk 5 CB) is infiltrated into active, InAs quantum dots embedded, InGaAsP membrane type nanocavities to investigate the possible effect of the LC orientation on active cavity tuning. The tuning is demonstrated thermally and thermo-optically. The thermal tuning showed that the cavity modes can be tuned in opposite directions...conference paper 2010
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Oxley, M. (author), Haffner, M. (author), Hoekstra, J. (author), Van der Heijden, H. (author)The paper will argue that the meaning and definition of private renting varies from country to country and this presents a series of challenges for comparative research. It will demonstrate a lack of equivalence between private rented housing sectors in Western Europe and show that this arises from variations in definitions, property rights,...conference paper 2010
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Dol, K. (author), Van der Heijden, H. (author), Oxley, M. (author)The central question in our paper is how the crisis impacts on national housing markets: how vulnerable are specific housing systems to the crisis? We searched for the consequences of the current crisis on housing markets in five countries: Ireland, Belgium, the Netherlands, Germany and England. The results show that we must first of all make a...conference paper 2010
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Compact Mach-Zehnder interferometer based on self-collimation of light in a silicon photonic crystalNguyen, 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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- Van der Heijden, J.J. (author) journal article 2010
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- Boumeester, H. (author), Van der Heijden, H. (author), de Vries, P. (author) lecture notes 2009
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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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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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Haffner, M. (author), Hoekstra, J. (author), Oxley, M. (author), Van der Heijden, H. (author)The once clear demarcation of funding and roles of the social and market rental sectors seems to have become blurred in a number of European countries. Social renting is no longer provided only by non-profit organisations. The extent to which a gap can be identified between the social and market rental sectors in six countries in north-west...book 2009
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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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Zhang, M. (author), Tavasszy, L.A. (author), Van der Heijden, R.E.C.M. (author)Developing rail freight sector in the EU is desirable from both a political-social point of view and from a market business point of view. Fragmentation in the national railway systems impedes, in many ways, social and economic benefits in the liberalised EU railway market. The need for innovative governance to deal with the fragmentation...conference paper 2009
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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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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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Van der Heijden, J.J. (author)It is often assumed that traditional regulatory regimes centered on governmental action will benefit from greater private sector involvement. And, under the catchy phrase "from government to governance" globally a wide variety of hybrid forms of governance has emerged. However, little empirical insight exists in the actual effects of such...doctoral thesis 2009
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Kicken, H.H.J.E. (author), Barbu, I. (author), Kersten, S.P. (author), Dündar, M.A. (author), Van der Heijden, R.W. (author), Karouta, F. (author), Nötzel, R. (author), Van der Drift, E. (author), Samelink, H.W.M. (author)Photonic crystal (PC) devices in the InP/InGaAsP/InP planar waveguide system exhibiting narrow bandwidth features were investigated for use as ultrasmall and tunable building blocks for photonic integrated circuits at the telecom wavelength of 1.55 ?m. The H1 cavity, consisting of a single PC-hole left unetched, represents the smallest possible...conference paper 2009
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Van der Heijden, J.J. (author)Facing issues with regulatory enforcement through municipal agencies, governments in Australia have reformed the enforcement of public building regulations. As a result, the private sector has been introduced in building regulatory enforcement regimes with differences amongst jurisdictions. In this paper account is given of the present day...conference paper 2008
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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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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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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