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Maas, D. (author), Van veldhoven, E. (author), Chen, P. (author), Sidorkin, V. (author), Salemink, H. (author), Van der Drift, E. (author), Alkemade, P. (author)The recently introduced helium ion microscope (HIM) is capable of imaging and fabrication of nanostructures thanks to its sub-nanometer sized ion probe [1,2]. The unique interaction of the helium ions with the sample material provides very localized secondary electron emission, thus providing a valuable signal for high-resolution imaging as well...conference paper 2010
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Maas, D. (author), Van Veldhoven, E. (author), Chen, P. (author), Sidorkin, V. (author), Salemink, H. (author), Van der Drift, E. (author), Alkemade, P. (author)The recently introduced helium ion microscope (HIM) is capable of imaging and fabrication of nanostructures thanks to its sub-nanometer sized ion probe [1,2]. The unique interaction of the helium ions with the sample material provides very localized secondary electron emission, thus providing a valuable signal for high-resolution imaging as well...conference paper 2009
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Chen, P. (author), Engel, Philip (author), Mazur, Adam (author), Abélard, Clément (author), Urbach, Paul (author)Accurate optical modeling for design and optimization of liquid crystal on silicon spatial light modulators (LCoS SLMs) is important for phase-related applications. Traditional matrix method cannot accurately predict the optical performance when the LC distribution is complex, therefore the rigorous finite element method (FEM) is preferred....conference paper 2020
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Chen, P. (author)The direct writing technology known as ion-beam-induced deposition (IBID) has been attracting attention mainly because of its high degree of flexibility of locally prototyping three-dimensional (3D) nanostructures. These high-resolution nanostructures have various research applications. However, no systematic study of the capability of IBID to...doctoral thesis 2010
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Chen, P. (author)Maritime transportation has been one of the major contributors to the global trade and economy. Accidents, however, have been continuously posing risks to individuals and societies in terms of loss of human life, economic and environmental consequences, etc. This thesis paid particular attention to the probabilistic risk analysis of ship...doctoral thesis 2020
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Chen, P. (author), Salemink, H.W.M. (author), Alkemade, P.F.A. (author)The authors report the results of investigating two models for ion-beam-induced deposition (IBID). These models describe IBID in terms of the impact of secondary electrons and of sputtered atoms, respectively. The yields of deposition, sputtering, and secondary electron emission, as well as the energy spectra of the secondary electrons were...journal article 2009
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Chen, P. (author), Van Veldhoven, E. (author), Sanford, C.A. (author), Salemink, H.W.M. (author), Maas, D.J. (author), Smith, D.A. (author), Rack, P.D. (author), Alkemade, P.F.A. (author)A 25 keV focused helium ion beam has been used to grow PtC nanopillars on a silicon substrate by beam-induced decomposition of a (CH3)3Pt(CPCH3) precursor gas. The ion beam diameter was about 1 nm. The observed relatively high growth rates suggest that electronic excitation is the dominant mechanism in helium ion-beam-induced deposition. Pillars...journal article 2010
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Alkemade, P.F.A. (author), Chen, P. (author), Van Veldhoven, E. (author), Maas, D. (author)An analytical model for the growth of nanopillars by helium ion-beam-induced deposition is presented and compared to experimental data. This model describes the competition between pillar growth in vertical and lateral directions. It assumes that vertical growth is induced by incident primary ions and type-1 secondary electrons, whereas lateral...journal article 2010
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Chen, P. (author), Salemink, H.W.M. (author), Alkemade, P.F.A. (author)Ion-beam-induced deposition (IBID) is a powerful technique for prototyping three-dimensional nanostructures. To study its capability for this purpose, the authors investigate the proximity effect in IBID of nanopillars. In particular, the changes in shape and dimension of pillars are studied when a second pillar is grown near an existing pillar....journal article 2009
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- Van Veldhoven, E. (author), Sidorkin, V. (author), Chen, P. (author), Alkemade, P. (author), Van der Drift, E. (author), Salemink, H. (author), Zandbergen, H. (author), Maas, D. (author) journal article 2010
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Chen, P. (author), Wu, M.Y. (author), Salemink, H.W.M. (author), Alkemade, P.F.A. (author)We report a new method for the fabrication of sub-10 nm nanopores in a fast single process step. The pore formation is accomplished by exploiting the competition between sputtering and deposition in ion-beam-induced deposition (IBID) on a thin membrane. The pore diameter can be controlled by adjusting the ion beam and gas exposure conditions....journal article 2008
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Zhao, Xiujie (author), Chen, P. (author), Gaudoin, Olivier (author), Doyen, Laurent (author)This study proposes a framework to analyze accelerated degradation testing (ADT) data in the presence of inspection effects. Motivated by a real dataset from the electric industry, we study two types of effects induced by inspections. After each inspection, the system degradation level instantaneously reduces by a random value. Meanwhile, the...journal article 2021
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Wang, Zhijie (author), Zhai, Qingqing (author), Chen, P. (author)The performance of units in the same batch can exhibit considerable heterogeneity due to the variation in the raw materials and fluctuation in the manufacturing process. For products suffering performance degradation in their use, such heterogeneity often results in an increase in the dispersion of the degradation paths of units in a...journal article 2021
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Fu, Sheng (author), Chen, P. (author), Liu, Yufeng (author), Ye, Zhisheng (author)Multinomial logistic regression models are popular in multicategory classification analysis, but existing models suffer several intrinsic drawbacks. In particular, the parameters cannot be determined uniquely because of the over-specification. Although additional constraints have been imposed to refine the model, such modifications can be...journal article 2023
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Zhao, Xiujie (author), Chen, P. (author), Lv, Shanshan (author), He, Zhen (author)Return of products within the warranty coverage induces additional cost and loss of reputation to manufacturers. It is of practical interest to predict the return rate by experimental means before introducing a product to the market. In this paper, we propose to optimize accelerated reliability tests to achieve the goal within limited time....journal article 2023
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Wang, Jinyang (author), Chen, P. (author), Ye, Zhisheng (author)The rate reduction models have been widely used to model the recurrent failure data for their capabilities in quantifying the repair effects. Despite the widespread popularity, there have been limited studies on statistical inference of most failure rate reduction models. In view of this fact, this study proposes a semiparametric estimation...journal article 2022
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Li, M. (author), Mou, Junmin (author), Chen, P. (author), Rong, Hao (author), Chen, Linying (author), van Gelder, P.H.A.J.M. (author)Collision between ships is one of the major contributors to ship accidents. To facilitate the development of the real-time collision risk analysis model for collision avoidance, in this research, an improved Rule-aware Time-varying Collision risk Model is proposed, which considers the estimation of target ship motion and the corresponding...journal article 2022
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Chen, P. (author), Buis, K. (author), Zhao, Xiujie (author)The gamma distribution is one of the most important parametric models in probability theory and statistics. Although a multitude of studies have theoretically investigated the properties of the gamma distribution in the literature, there is still a serious lack of tailored statistical tools to facilitate its practical applications. To fill...journal article 2022
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Fu, Sheng (author), Chen, P. (author), Ye, Zhisheng (author)The multicategory support vector machine (MSVM) has been widely used for multicategory classification. Despite its widespread popularity, regular MSVM cannot provide direct probabilistic results and suffers from excessive computational cost, as it is formulated on the hinge loss function and it solves a sum-to-zero constrained quadratic...journal article 2023
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Hu, Jiawen (author), Chen, P. (author)The remaining useful lifetime (RUL) estimated from the in-situ degradation data has shown to be useful for online predictive maintenance. In the literature, the RUL is often estimated by assuming a soft-failure threshold for the degradation data. In practice, however, systems may not be subject to the degradation-induced soft failures....journal article 2020
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