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Haverkate, L.A. (author), Zbiri, M. (author), Johnson, M.R. (author), Carter, E. (author), Kotlewski, A. (author), Picken, S.J. (author), Mulder, F.M. (author), Kearley, G.J. (author)Discotic liquid crystalline (DLC) charge transfer (CT) complexes combine visible light absorption and rapid charge transfer characteristics, being favorable properties for photovoltaic (PV) applications. We present a detailed study of the electronic and vibrational properties of the prototypic 1:1 mixture of discotic 2,3,6,7,10,11...journal article 2014
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Van Mourik, P. (author), Van Dam, J. (author), Picken, S.J. (author), Ursem, B. (author)The metabolic pathways of living organisms produce biomaterials. Hence, in principle biomaterials are fully sustainable. This does not mean that their processing and application have no impact on the environment, e.g. the recycling of natural rubber remains a problem. Biomaterials are applied in a wide range of consumer products, varying from...book chapter 2013
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Liu, Z. (author), Besseling, N.A.M. (author), Mendes, E. (author), Picken, S.J. (author)Polyborosiloxanes (PBSs) are viscoelastic, transparent, colourless, self-healable polymer matrices, synthesized by reacting linear polydimethylsiloxanes (PDMSs) with boric acid (BA) above 150°C. BA takes part not only in cleaving the PDMS chains, but also contributes boronic-acid like moieties to the cleaved chain ends, which provide...conference paper 2013
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- Cordova, M.E. (author), Sleczka, A.E. (author), Kelder, E.M. (author), Picken, S.J. (author) conference paper 2012
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Remes, A. (author), Pop, A. (author), Manea, F. (author), Baciu, A. (author), Picken, S.J. (author), Schoonman, J. (author)The aim of this study was the preparation, characterization, and application of a multi-wall carbon nanotubes-epoxy composite electrode (MWCNT-EP) with 25%, wt. MWCNTs loading for the voltammetric/amperometric determination of pentachlorophenol (PCP) in aqueous solutions. The structural and morphological aspects of the MWCNT-EP composite...journal article 2012
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Molaei, M.J. (author), Ataie, A. (author), Raygan, S. (author), Picken, S.J. (author)In this research, barium ferrite /magnetite nanocomposites synthesized via a mechano-chemical route. Graphite was used in order to reduce hematite content of barium ferrite to magnetite to produce a magnetic nanocomposite. The effects of processing conditions on the powder characteristics were investigated by XRD, VSM, and HRTEM techniques. XRD...journal article 2011
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Erdamar, A.K. (author), Van Leest, M.M. (author), Picken, S.J. (author), Caro, J. (author)We use an elastomer as infill material for a photonic crystal. As a result of the thermal-expansion-induced strongly negative thermal optical coefficient, this material is highly suitable for thermal tuning of the transmission of a cavity. This is demonstrated by global infilling of a hole-type silicon photonic crystal slab and global thermal...journal article 2011
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Erdamar, A.K. (author), Van Leest, M.M. (author), Picken, S.J. (author), Caro, J. (author)Thermal tuning of the transmission of an elastomer infilled photonic crystal cavity is studied. An elastomer has a thermal expansion-induced negative thermo-optic coefficient that leads to a strong decrease of the refractive index upon heating. This property makes elastomer highly suitable for thermal tuning of the transmission of a cavity,...conference paper 2011
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- Liu, Z. (author), Besseling, N.A.M. (author), Mendes, E. (author), Picken, S.J. (author) conference paper 2011
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Kruglova, O. (author), Mulder, F.M. (author), Kearley, G.J. (author), Picken, S.J. (author), Stride, J.A. (author), Paraschiv, I. (author), Zuilhof, H. (author)The dynamics of the discotic liquid-crystalline system, hexakis (n-hexyloxy) triphenylene (HAT6), is considered in the frame of the phenomenological model for rate processes proposed by Berlin. It describes the evolution of the system in the presence of the long-time scale correlations in the system, and we compare this with experimental...journal article 2010
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Kulichikhin, V. (author), Semakov, A. (author), Karbushev, V. (author), Makarova, V. (author), Mendes, E. (author), Fisher, H. (author), Picken, S. (author)The main focus of this Chapter was targeted on novel approaches to compatibility of particles with polymer matrices and detail analysis of rheology-morphology interrelationships. Rather attractive method of mixing based on knowledge of rheological behavior of polymers at high shear rates was proposed and studied. The major fraction of ND around...book chapter 2010
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Picken, S.J. (author), Marissen, R. (author), Antonelli, V. (author), Jansen, G.W. (author)The invention is directed to a damage tolerant composite comprising: -at least one reversible supramolecular polymer, -fibre reinforcement, and -nanoparticles having an aspect ratio of at least 10.patent 2009
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Manea, F. (author), Pop, A. (author), Radovan, C. (author), Malchev, P.G. (author), Bebeselea, A. (author), Burtica, G. (author), Picken, S.J. (author), Schoonman, J. (author)In this paper, a modified expanded graphite composite electrode based on natural zeolitic volcanic tuff modified with silver (EG-Ag-Z-Epoxy) was developed. Cyclic voltammetry measurements revealed a reasonably fast electron transfer and a good stability of the electrode in 0.1 M NaOH supporting electrolyte. This modified electrode exhibited...journal article 2008
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Corb, I. (author), Manea, F. (author), Radovan, C. (author), Pop, A. (author), Burtica, G. (author), Malchev, P.G. (author), Picken, S.J. (author), Schoonman, J. (author)Electrodes based on carbon, i.e., expanded graphite (20%, wt.)-epoxy composite (20EG-Epoxy) and expanded graphite (20%, wt.)-polystyrene composite (20EG-PS) have been prepared, characterized using scanning electron microscopy (SEM) and cyclic voltammetry (CV), and tested as anodic sensors. The electrodes exhibited good mechanical resistance and...journal article 2007
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Schoonman, J. (author), Manea, F. (author), Radovan, C. (author), Corb, I. (author), Pop, A. (author), Burtica, G. (author), Malchev, P.G. (author), Picken, S.J. (author)An exfoliated graphite-polystyrene composite electrode was evaluated as analternative electrode in the oxidation and the determination of oxalic acid in 0.1 M Na2SO4supporting electrolyte. Using CV, LSV, CA procedures, linear dependences I vs. C wereobtained in the concentrations range of oxalic acid between 0.5 to 3 mM, with LOD =0.05mM, and...journal article 2007
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- Giacomelli Penon, M. (author), Picken, S.J. (author), Wübbenhorst, M. (author), De Vos, G. (author), Van Turnhout, J. (author) journal article 2006
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Matthias, H. (author), Röder, T. (author), Wehrspohn, R.B. (author), Kitzerow, H.S. (author), Matthias, S. (author), Picken, S.J. (author)Active tuning of photonic crystals can be achieved by filling the porous structures with liquid crystals. Here, the director field in macropores was studied by fluorescence confocal polarizing microscopy. For this purpose, the photonic crystal was infiltrated with a glass-forming liquid crystalline polymer, the sample was cooled below the glass...journal article 2005
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- Best, A.S. (author), Nerkar, J.Y. (author), Ooms, F.G.B. (author), Picken, S.J. (author) journal article 2005
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Cangialosi, D. (author), Wübbenhorst, M. (author), Schut, H. (author), Van Veen, A. (author), Picken, S.J. (author)In this study, polycarbonate (PC) and polystyrene (PS) are subjected to plastic deformation by means of cold rolling and the resulting variation of the free volume and its subsequent time evolution after rolling is investigated by means of positron annihilation lifetime spectroscopy (PALS). The value of the long lifetime component that is...journal article 2005
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- Cangialosi, D. (author), Wübbenhorst, M. (author), Schut, H. (author), van Veen, A. (author), Picken, S.J. (author) journal article 2004
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