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48 results on '"Zieren, V."'

1. Hot-electron degradation in hydrogenated amorphous-silicon-nitride thin-film diodes

Author

Oversluizen, G, Zieren, V., Johnson, M.T., van der Put, A.A., and Lodders, W.H.M.

Subjects
Diodes, Schottky-barrier -- Research, Physics -- Research, Thin films -- Research, Physics
Abstract

Research describing thin-film diodes and the generation of hot electrons is presented. In particular the anodic drift relative to various thicknesses of diode is investigated.

Published
2001

2. Modeling of light-emission spectra measured on silicon nanometer-scale diode antifuses

Author

Akil, N., Houtsma, V.E., LeMinh, P., Holleman, J., Zieren, V., de Mooij, D., Woerlee, P.H., van den Berg, A., and Wallinga, H.

Subjects
Electroluminescence -- Research, Light-emitting diodes -- Research, Optoelectronic devices -- Research, Physics
Abstract

A new study investigates the electroluminescence spectra of emitted light from nanometer-scale diodes.

Published
2000

3. Ultrathin wear-resistant coatings for the tape bearing surface of thin-film magnetic heads for digital compact cassette

Author

Zieren, V., Jongh, M. de, Groenou, A. Broese van, Zon, J.B.A. van, Lasinski, P., and Theunissen, G.S.A.M.

Subjects
Thin films -- Research, Magnetic recorders and recording -- Heads, Audiocassettes -- Equipment and supplies, Materials -- Dynamic testing, Business, Electronics, Electronics and electrical industries
Abstract

The introduction of the Digital Compact Cassette system into the consumer market imposed some severe requirements on the durability of the thin-film heads used in this system. The reliability of the head's record and playback functions has to be maintained under a wide variety of climatic conditions and tape types, as a consequence of the system's backward compatibility with the analog Compact Cassette. This paper describes the results of several accelerated wear tests as well as of durability tests against tape, which were setup to find the best material and process conditions for a wear-resistant coating on the Tape Bearing Surface of a DCC head. This ultrathin coating (< 75 nm) appeared to be the best solution as a safeguard against severe pole-tip recession, which would cause an unacceptable distance loss in the recording system. The first material which showed a very high wear resistance was CrN. As CrN fulfils all requirements for wear and corrosion resistance in the home application, this material is presently used in all DCC home decks. However, under extremely abrasive conditions, such as may be encountered in a car environment (e.g. cold start at -20 [degree] C), CrN is surpassed by an even more wear-resistant material, called SPL (Super Protective Layer). Therefore, SPL is preferred as a coating on thin-film heads for Car Stereo (as well as portable) DCC apparatus. Both materials are characterized by their specific wear performance, which has a superior impact on the electrical (record and playback) properties of the head during its life-time.

Published
1994

4. Design and fabrication of thin film heads for digital compact cassette audio system

Author

Zieren, V., Somers, G., Ruigrok, J., Jongh, M. de, Straalen, A. van, Folkerts, W., Draaisma, E., Pronk, F., and Mitchell T.

Subjects
Magnetic recorders and recording -- Heads, Thin films -- Usage, Audiocassette players and recorders -- Materials, Business, Electronics, Electronics and electrical industries
Abstract

The Digital Compact Cassette (DCC) system requires a multitrack recording head, that can handle the digital multitrack format, but can also playback standard analog compact cassette tapes. In this paper we discuss layout and design of a recently developed thin film DCC head. An analysis of design parameters is presented, which shows why a small throat height of only 3 micrometers has been chosen. In order to ensure a sufficient lifetime of the head a CrN coating on the tape bearing surface is applied.

Published
1993

5. CoCr double-layered media with NiFe and CoZrNb soft-magnetic layers (invited).

Author

Bernards, J. P. C., Schrauwen, C. P. G., Zieren, V., and Luitjens, S. B.

Subjects
COBALT alloys, CHROMIUM alloys, THIN films
Abstract

Presents a study that investigated the properties of cobalt-chromium alloy double-layered thin films. Analysis of the magnetic properties of the thin films; Examination of the structural properties of the thin films; Evaluation of the recording properties of the thin films.

Published
1988
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6. Low-power micro-scale CMOS-compatible silicon sensor on a suspended membrane

Author

Kovalgin, Alexeij Y., Holleman, J., Iordache, G., Jenneboer, Antonius J.S.M., Falke, F., Zieren, V., and Goossens, M.J.

Subjects
IR-67497, EWI-15538
Abstract

In this paper we describe a new, simple and cheap silicon device operating at high temperature at a very low power of a few mW. The essential part of the device is a nano-size conductive link 10-100 nm in size (the so-called antifuse) formed in between two poly-silicon electrodes separated by a thin SiO2 layer. The device can be utilized in chemical sensors or chemical micro-reactors requiring high temperature and very low power consumption e.g. in portable, battery operated systems. As a direct application, we mention a gas sensor (i.e. Pellistor) for hydrocarbons (butane, methane, propane, etc.) based on temperature changes due to the catalytic combustion of hydrocarbons. The power consumed by our device is at about 2% of the power consumed by conventional Pellistors.

Published
2006

10. A back-wafer contacted silicon-on-glass integrated bipolar process. Part I. The conflict electrical versus thermal isolation

Author

Nanver, L.K. (author), Nenadovic, N. (author), d'Alessandro, V. (author), Schellevis, H. (author), van Zeijl, H.W. (author), Dekker, R. (author), de Mooij, D.B. (author), Zieren, V. (author), Slotboom, J.W. (author), Nanver, L.K. (author), Nenadovic, N. (author), d'Alessandro, V. (author), Schellevis, H. (author), van Zeijl, H.W. (author), Dekker, R. (author), de Mooij, D.B. (author), Zieren, V. (author), and Slotboom, J.W. (author)

Abstract

Electrical Engineering, Mathematics and Computer Science

Published
2004

27. Image formation in photosensitive layers on top of highly conductive substrates

Author

van den Berg, H. A. M. and Zieren, V.

Abstract

The distribution of the average electric energy density defines which part of an exposed photosensitive resist layer is affected by the light beam. The image, which is formed by using optical projection systems, cannot be described by the standard Fresnel-Kirchhoff theory if highly reflective substrates are used. The theory has to take full account of the vectorial character of the light that accomplishes the exposure of the resist. It is shown that, even when objectives with a high numerical aperture are used, the standing wave effects will strongly affect the image. Especially in the region very close to the metal-resist interface, large deviations from scalar diffraction theory have been observed. These conclusions are supported by experimental evidence. The relevance of the theory is discussed by considering the consequences for the realization of microelectronic circuits.

Published
1980

35. Integrated silicon multicollector magnetotransistors

Author

Zieren, V. (author) and Zieren, V. (author)

Abstract

Summary in Dutch, Electrical Engineering, Mathematics and Computer Sciene, Electrical Engineering, Mathematics and Computer Science

Published
1983

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