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Van Der Sluis, Olaf (author), Iwamoto, Nancy (author), Qu, Jianmin (author), Yang, Shaorui (author), Yuan, C.A. (author), van Driel, W.D. (author), Zhang, Kouchi (author)Adhesion and delamination have been pervasive problems hampering the performance and reliability of micro-and nano-electronic devices. In order to understand, predict, and ultimately prevent interface failure in electronic devices, development of accurate, robust, and efficient delamination testing and prediction methods is crucial. Adhesion...book chapter 2018
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Yazdan Mehr, M. (author), van Driel, W.D. (author), Zhang, Kouchi (author)Lumen depreciation is one of the major failure modes in light-emitting diode (LED) systems. It originates from the degradation of the different components within the system, including the chip, the driver, and the optical materials (i.e., phosphorous layer). The kinetics of degradation in real-life applications is relatively slow, and in most...book chapter 2018
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Vos, T. (author), den Breeijen, P. (author), van Driel, W.D. (author)In the past 4 years we have witnessed a change in quality and reliability to make the marked introduction of solid-state lighting (SSL) successful. LED penetration levels have reached values of 10–30%, depending on the application. The number and variety of LED packages and, thus, associated LED-based products, have significantly increased in...book chapter 2018
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Agbemuko, Adedotun (author), van Meurs, Johannes (author), van Driel, W.D. (author)This chapter gives an extensive overview into the nature of the environment that luminaires and thus LEDs are subjected to during the event of a lightning stroke. Direct lightning stroke almost always results in instant damage for low-voltage connected devices, except in “extraordinary circumstances” where random components may survive. This is...book chapter 2018
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Sun, B. (author), Fan, Xuejun (author), Ye, H. (author), Fan, Jiajie (author), Qian, Cheng (author), van Driel, W.D. (author), Zhang, Kouchi (author)In this paper, an integrated LED lamp with an electrolytic capacitor-free driver is considered to study the coupling effects of both LED and driver's degradations on lamp's lifetime. An electrolytic capacitor-less buck-boost driver is used. The physics of failure (PoF) based electronic thermal simulation is carried out to simulate the lamp's...journal article 2017
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Yazdan Mehr, M. (author), Vollebregt, S. (author), van Driel, W.D. (author), Zhang, Kouchi (author)A graphene monolayer has been successfully coated on one side of a bisphenol-A-polycarbonate (BPA-PC) plate, used as a substrate for remote phosphor applications in light-emitting diode (LED)-based products. Using a photoresist transferring method, graphene sheet has been coated on BPA-PC plates. The results show that this graphene monolayer...journal article 2017
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Sun, B. (author), Fan, Xuejun (author), Li, Lei (author), Ye, H. (author), van Driel, W.D. (author), Zhang, Kouchi (author)This paper studies the interaction of catastrophic failure of the driver and LED luminous flux decay for an integrated LED lamp with an electrolytic capacitor-free LED driver. Electronic thermal simulations are utilized to obtain the lamp's dynamic history of temperature and current for two distinct operation modes: constant current mode (CCM...journal article 2017
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van Driel, B.A. (author), Wezendonk, T.A. (author), van den Berg, K. J. (author), Kooyman, P.J. (author), Gascon, Jorge (author), Dik, J. (author)Titanium white (TiO<sub>2</sub>) has been widely used as a pigment in the 20th century. However, its most photocatalytic form (anatase) can cause severe degradation of the oil paint in which it is contained. UV light initiates TiO<sub>2</sub>-photocatalyzed processes in the paint film, degrading the oil binder into volatile components...journal article 2017
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Morsch, Suzanne (author), van Driel, B.A. (author), van den Berg, Klaas Jan (author), Dik, J. (author)As linseed oil has a longstanding and continuing history of use as a binder in artistic paints, developing an understanding of its degradation mechanism is critical to conservation efforts. At present, little can be done to detect the early stages of oil paint deterioration due to the complex chemical composition of degrading paints. In this...journal article 2017
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Hamon, B. (author), van Driel, W.D. (author)Human civilization revolves around artificial light. Since its earliest incarnation as firelight to its most recent as electric light, artificial light is at the core of our existence. It has freed us from the temporal and spatial constraints of daylight by allowing us to function equally well night and day, indoors and outdoors. It evolved from...journal article 2016
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van Driel, Willem (author), Hernandez Ganan, C. (author), Lobbezoo, M (author), van Eeten, M.J.G. (author)The payment industry has been characterized by a small number of players that operate the schemes for the facilitation of credit and debit card payments. Over the years, various initiatives have been taken in order to increase competition and hence cost efficiency within the industry. One of the latest efforts is the introduction of Payment...conference paper 2016
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van Driel, W.D. (author), Schuld, M. (author), Jacobs, B. (author), Commissaris, F. (author), van der Eyden, J. (author), Hamon, B. (author)Commercial claims for LED-based products in terms of lumen maintenance are fully based on TM-21 extrapolations using LM-80 data. This paper indicates that there may be a risk in doing this as TM-21 only relies on the behavior of the average LED degradation, instead of taking into account the degradation of all individual LEDs. Therefore, we...journal article 2016
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Martins, A (author), Coddington, J (author), Van der Snickt, G (author), van Driel, B.A. (author), McGlinchey, C. (author), Dahlberg, D. (author), Janssens, K (author), Dik, J. (author)Jackson Pollock’s Number 1A, 1948 painting was investigated using in situ scanning macro-x-ray fluorescence mapping (MA-XRF) to help characterize the artist’s materials and his creative process. A multivariate curve resolution-alternating least squares (MCR-ALS) approach was used to examine the hyperspectral data and obtain distribution maps and...journal article 2016
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Yazdan Mehr, M. (author), van Driel, W.D. (author), Zhang, Kouchi (author)A methodology, based on accelerated degradation testing, is developed to predict the lifetime of remote phosphor plates used in solid-state lighting (SSL) applications. Both thermal stress and light intensity are used to accelerate degradation reaction in remote phosphor plates. A reliability model, based on the Eyring relationship, is also...journal article 2015
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Yazdan Mehr, M. (author), van Driel, W.D. (author), Zhang, Kouchi (author)In this paper, progresses of color maintenance, also known as color shift, in solid-state lighting (SSL) systems are thoroughly reviewed. First, color shift is introduced and a few examples are given from different real-life industrial conditions. Different degradation mechanisms in different parts of the system are also explained. Different...review 2015
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van Kuijk, J.I. (author), van Driel, Liesbeth (author), van Eijk, D.J. (author)This study explored how usability was dealt with in four product development organizations active in different sectors: high-end automotive, professional printers and copiers, office coffee makers and fast moving consumer goods. The primary differentiators of the selected cases were whether they were targeting businesses or consumers and the...journal article 2015
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van Driel, W.D. (author), Yazdan Mehr, M. (author), Zhang, Kouchi (author)Solid State Lighting (SSL) technologies and products are gradually pervading into our daily life. An SSL system is composed of a LED engine with a micro-electronics driver(s), integrated in a housing that also provides the optical, sensing and other functions. Knowledge of (system) reliability is crucial for not only the business success of the...conference paper 2014
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Dong, J. (author), van Driel, W.D. (author), Zhang, Kouchi (author)This paper describes a new design concept of automatically diagnosing and compensating LED degradations in distributed solid state lighting (SSL) systems. A failed LED may significantly reduce the overall illumination level, and destroy the uniform illumination distribution achieved by a nominal system. To our knowledge, an automatic scheme to...journal article 2011
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van Driel, E. (author), Bociort, F. (author), Serebriakov, A. (author)We have shown recently that, when certain quite general conditions are satisfied, the set of local minima in the optical merit function space forms a network where they are all connected through optimization paths generated from saddle points having a Morse index of 1. A new global optimization method, that makes use of this linking network to...conference paper 2004
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- van Driel, C.A. (author) doctoral thesis 1994