document

Characterization of optical strain sensors based on silicon waveguides

Westerveld, W.J. (author), Pozo Torres, J.M. (author), Muilwijk, P.M. (author), Leinders, S.M. (author), Harmsma, P.J. (author), Tabak, E. (author), van den Dool, T.C. (author), van Dongen, K.W.A. (author), Yousefi, M. (author), Urbach, H.P. (author)

Strain gauges are widely employed in microelectromechanical systems (MEMS) for sensing of, for example, deformation, acceleration, pressure, or sound [1]. Such gauges are typically based on electronic piezoresistivity. We propose integrated optical sensors which have particular benefits: insensitivity to electromagnetic interference, no danger...

conference paper 2013

document

Low power and self-reconfigurable WBAN controller for continuous bio-signal monitoring system

Lee, S. (author), Yoo, H.J. (author), Body Area Network (BAN) Program, Holst Centre/imec, 5656AE Eindhoven, Netherlands Department of Electrical Engineering, Korea Advanced Institute of Science and Technology(KAIST), 305-701 Daejeon, South Korea (author)

The WBAN controller with Branched Bus (BB) topology and Continuous Data Transmission (CDT) protocol with low power consumption and self- reconfigurability is proposed for wearable healthcare applications. The BB topology and CDT protocol is a combination of conventional Bus and Star topology and a variation from TDMA protocol, respectively,...

article 2013

document

Organic and large area electronics: Where we are and where we are going

Koetse, M. (author)

public lecture 2013

document

PELE fragmentation dynamics

Verreault, J. (author), van Hinsberg, N.P. (author), Abadjieva, E. (author)

An analytical model that describes the PELE fragmentation dynamics is presented and compared with experimental results from literature. The model accounts for strong shock effects and detailed interactions taking place between the filling – the inner core of the ammunition – and the target (including shock wave, expansion wave, free surface and...

conference paper 2013

document

Understanding the tensile properties of concrete

The response of concrete under tensile loading is crucial for most applications because concrete is much weaker in tension than in compression. Understanding the response mechanisms of concrete under tensile conditions is therefore key to understanding and using concrete in structural applications. Understanding the tensile properties of...

book 2013

document

Aminobenzoate modified MgAl hydrotalcites as a novel smart additive of reinforced concrete for anticorrosion applications

Yang, Z. (author), Fischer, H.R. (author), Cerezo, J. (author), Mol, J.M.C. (author), Polder, R.B. (author)

A carbonate form of MgAl hydrotalcite, Mg(2)Al-CO3 and its p-aminobenzoate (pAB) modified derivative, Mg(2)Al-pAB, were synthesized and characterized by means of XRD, FT-IR and TG/DSC. The anticorrosion behavior of Mg(2)Al-pAB was evaluated based on open circuit potential (OCP) of carbon steel in simulated concrete pore solution and on chloride...

article 2013

document

n-Type self-assembled monolayer field-effect transistors for flexible organic electronics

Ringk, A. (author), Roelofs, W.S.C. (author), Smits, E.C.P. (author), van der Marel, C. (author), Salzman, I. (author), Neuhold, A. (author), Gelinck, G.H. (author), Resel, R. (author), de Leeuw, D.M. (author), Strohriegl, P. (author)

Within this work we present n-type self-assembled monolayer field-effect transistors (SAMFETs) based on a novel perylene bisimide. The molecule spontaneously forms a covalently fixed monolayer on top of an aluminium oxide dielectric via a phosphonic acid anchor group. Detailed studies revealed an amorphous, two-dimensional semiconducting sheet...

article 2013

document

Bedeutung der Rohstoffknappheit

Diederen, A.M. (author)

conference paper 2013

document

Fundamentals of ballistic protection in order to find better, lighter and affordable solutions

Diederen, A.M. (author)

conference paper 2013

document

Response mechanisms of concrete under impulsive tensile loading

Weerheijm, J. (author), Forquin, P. (author)

The response of concrete up to complete failure in tension is represented in the load deformation relation. The characteristic parameters are the ultimate strength, stiffness in the ascending branch and the fracture energy. All these parameters depend on concrete composition and environmental conditions, as discussed in the previous chapters....

bookPart 2013

document

Piezoelectric and mechanical properties of structured PZT-epoxy composites

James, N.K. (author), van den Ende, D.A. (author), Lafont, U. (author), van der Zwaag, S. (author), Groen, W.A. (author)

Structured lead zirconium titanate (PZT)-epoxy composites are prepared by dielectrophoresis. The piezoelectric and dielectric properties of the composites as a function of PZT volume fraction are investigated and compared with the corresponding unstructured composites. The effect of poling voltage on piezoelectric properties of the composites is...

article 2013

document

Degradation mechanism of silicone glues under UV irradiation and options for designing materials with increased stability

Fischer, H.R. (author), Semprimoschnig, C. (author), Mooney, C. (author), Rohr, T. (author), van Eck, E.R.H. (author), Verkuijlen, M.H.W. (author)

The degradation of silicone glues used, for example, in the assembly of solar modules for use in space, has been investigated and possible mechanisms which lead to colouration and possible embrittlement are analysed. Both effects are connected to the generation of radicals upon exposure to UV irradiation. As a follow up-reaction in vacuum, cross...

article 2013

document

A statistical description of explosion produced debris dispersion

van der Voort, M.M. (author), Weerheijm, J. (author)

The handling of explosives and ammunition introduces a safety risk for personnel and third parties. Accidents related to storage, transport and transshipment may result in severe injury and material damage. Dispersion of structural debris is one of the main hazards resulting from detonations inside structures. Reliable prediction models for...

article 2013

document

Preface

Weerheijm, J. (author)

bookPart 2013

document

Residual stress in silicon caused by Cu-Sn wafer-level packaging

Taklo, M.M.V. (author), Vardøy, A.S. (author), de Wolf, I. (author), Simons, V. (author), van de Wiel, H.J. (author), van der Waal, A. (author), Lapadatu, A. (author), Martinsen, S. (author), Wunderle, B. (author)

The level of stress in silicon as a result of applying Cu-Sn SLID wafer level bonding to hermetically encapsulate a highperformance infrared bolometer device was studied. Transistors are present in the read out integrated circuit (ROIC) of the device and some are located below the bond frame. Test vehicles were assembled using Cu-Sn SLID bonding...

conference paper 2013

document

Large area flexible lighting foils using distributed bare LED dies on polyester substrates

van den Ende, D.A. (author), Kusters, R.H.L. (author), Cauwe, M. (author), van der Waal, A. (author), van den Brand, J. (author)

Integration of LEDs on flexible foil substrates is of interest for flexible lighting applications and for backlights for flexible displays. Such a large area lighting device can be made by integrating a matrix of closely spaced LEDs on a flexible foil substrate. Preferably, these LEDs are integrated unpackaged, i.e. as bare dies, as this reduces...

article 2013

document

Determination of irradiation parameters for laser-induced periodic surface structures

Eichstädt, J. (author), Römer, G.R.B.E. (author), Huis in 't Veld, A.J. (author)

The spatial emergence of laser-induced periodic surface structures (LIPSS) on single-crystalline silicon, upon irradiation with linearly polarized picosecond laser pulses (wavelength λ = 1030 nm, pulse duration τ = 6.7 ps, pulse repetition frequency fp = 1 kHz) was studied theoretically and experimentally, under lateral displacement conditions....

article 2013

document

Active and passive component embedding into low-cost plastic substrates aimed at smart system applications

Cauwe, M. (author), Vandecasteele, B. (author), de Baets, J. (author), van den Brand, J. (author), Kusters, R. (author), Sridhar, A. (author)

The technology development for a low-cost, roll-to-roll compatible chip embedding process is described in this paper. Target applications are intelligent labels and disposable sensor patches. Two generations of the technology are depicted. In the first version of the embedding technology, the chips are embedded in an adhesive layer between a...

conference paper 2013

document

Thermal transient effect and improved junction temperature measurement method in high-voltage light-emitting diodes

Ye, H. (author), Chen, X. (author), van Zeijl, H. (author), Gielen, A.W.J. (author), Zhang, G. (author)

The diode forward voltage method with pulsed currents was widely used for monitoring junction temperature (Tj of light-emitting diodes (LEDs). However, a thermal transient effect (TTE) was observed by the pulsed currents and consequent errors were introduced. Thermoelectric physics was conducted to explain this phenomena and a group of...

article 2013

document

An introduction to system reliability for solid-state lighting

van Driel, W.D. (author), Evertz, F.E. (author), Zaal, J.J.M. (author), Morales Nápoles, O. (author), Yuan, C.A. (author)

Solid-State Lighting (SSL) applications are slowly but gradually pervading into our daily life. An SSL system is composed of an light-emitting diode (LED) engine with a microelectronic driver(s) in a housing that also supplies the optic design. Knowledge of system-level reliability is crucial for the business success of future SSL systems, and...

bookPart 2013