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Picken, J. (author), Walker, D. (author)This paper describes the methods currently in use by Aerodynamics Department of the Royal Aircraft Establishment for the investigation of aerodynamic-heating phenomena using rocket-propelled free-flight test vehicles. The main concern of the paper is with the measurement of heat transfer, but there are brief comments on some simple methods of...report 1961
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Picken, J. (author), Greenwood, G.H. (author)Local heat transfer and surface pressure were measured on a caret wing incorporated in a four-wing Maikapar body. The design Mach number was 2.47 and the design incidence 12.130. Data were obtained over a Mach number range of 1.6 to 3.6 at Reynolds numbers based on ridge line length and free-stream conditions of up to 24 million. Transition...report 1965
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- Picken, S.J. (author), Van der Zwaag, S. (author), Northolt, M.G. (author) journal article 1992
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- Picken, S.J. (author) public lecture 2001
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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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- Cangialosi, D. (author), Wübbenhorst, M. (author), Groenewold, J. (author), Mendes, E. (author), Schut, H. (author), van Veen, A. (author), Picken, S.J. (author) journal article 2004
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- Cangialosia, D. (author), Wübbenhorst, M. (author), Schut, H. (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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- Best, A.S. (author), Nerkar, J.Y. (author), Ooms, F.G.B. (author), Picken, S.J. (author) journal article 2005
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- Every, H.A. (author), Mendes, E. (author), Picken, S.J. (author) journal article 2005
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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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- 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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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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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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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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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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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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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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- Liu, Z. (author), Besseling, N.A.M. (author), Mendes, E. (author), Picken, S.J. (author) conference paper 2011
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Kochetov, R. (author), Korobko, A.V. (author), Andritsch, T. (author), Morshuis, P.H.F. (author), Picken, S.J. (author), Smit, J.J. (author)In this paper the thermal conductivity of epoxy-based composite materials is analysed. Two and three-phase Lewis–Nielsen models are proposed for fitting the experimental values of the thermal conductivity of epoxy-based polymer composites. Various inorganic nano- and microparticles were used, namely aluminium oxide, aluminium nitride, magnesium...journal article 2011