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Institution

STMicroelectronics

CompanyGeneva, Switzerland
About: STMicroelectronics is a company organization based out in Geneva, Switzerland. It is known for research contribution in the topics: Transistor & Signal. The organization has 17172 authors who have published 29543 publications receiving 300766 citations. The organization is also known as: SGS-Thomson & STM.


Papers
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Proceedings ArticleDOI
12 Mar 2002
TL;DR: In this article, thermal transient measurements may result in the time constant density function and the structure function of the measured structure, which can be used to detect die attach or soldering problems of packages.
Abstract: The evaluation of the thermal transient measurements may result in the time constant density function and the structure function of the measured structure. In this paper we show how these results can be used to detect die attach or soldering problems of packages. Another application of the method in detecting partial thermal resistances in the heat flow path is also presented and evaluated.

79 citations

Patent
24 Sep 1984
TL;DR: In this paper, a short channel metal oxide semiconductor transistor device is processed without undesirable short channel effects, such as VT falloff and with a reasonable source-drain operating voltage support.
Abstract: A short channel metal oxide semiconductor transistor device is processed without undesirable short channel effects, such as VT falloff and with a reasonable source-drain operating voltage support. In a substrate lightly doped with P-type conductivity material and source and drain region heavily doped with an N-type conductivity material, two lightly doped N- regions are disposed between the edge of the gate and the source and drain regions. A channel region is more heavily doped with P-type material than the substrate. Two regions extend from opposite sides of the channel region to an area generally below the two N- regions and above the substrate, which regions are more heavily doped than the channel regions.

79 citations

Patent
03 Oct 1991
TL;DR: In this paper, a polyphase dc motor with a plurality of "Y" connected stator coils has a back emf amplifier switchable connected to at least one floating coil in accordance with sequence signals received directly from a sequence generator.
Abstract: A circuit for operating a polyphase dc motor, for example of the type having a plurality of "Y" connected stator coils, has circuitry for unambiguously determining the actual instantaneous position of the rotor of the motor, circuitry for determining a desired rotor position precedent to executing a desired commutation sequence, and circuitry for executing the desired commutation sequence when the circuit for determining the actual instantaneous position of the rotor detects that the rotor is actually in the desired rotor position. The circuitry for unambiguously determining the actual instantaneous position of the rotor includes a back emf amplifier switchably connected to at least one floating coil in accordance with sequence signals received directly from a sequence generator, and circuitry for determining when the voltage received by the back emf amplifier crosses zero from a predetermined direction. In one embodiment, the circuit includes mask circuitry for inhibiting the zero crossing detection circuitry for a predetermined time after a change in the commutation sequence. The mask circuitry includes clocked up and first and second down counters, the second down counter being inhibited to be clocked until the first down counter has reached a predetermined count, and the zero crossing circuitry being inhibited until at least the second down counter has completed its count. When a zero crossing is detected, the count of the up counter is loaded into both the first and second down counter, then the up counter is reset to begin a new commutation period count.

79 citations

Journal ArticleDOI
TL;DR: The present work aims to demonstrate the great potential that exists by combining an optimized reflective substrate with a high performance surface chemistry and the techniques chosen for both the substrate and surface chemistry are simple, inexpensive, and amenable to mass production.
Abstract: In this work, we report on the improvement of microarray sensitivity provided by a crystalline silicon substrate coated with thermal silicon oxide functionalized by a polymeric coating. The improvement is intended for experimental procedures and instrumentations typically involved in microarray technology, such as fluorescence labeling and a confocal laser scanning apparatus. The optimized layer of thermally grown silicon oxide (SiO(2)) of a highly reproducible thickness, low roughness, and fluorescence background provides fluorescence intensification due to the constructive interference between the incident and reflected waves of the fluorescence radiation. The oxide surface is coated by a copolymer of N,N-dimethylacrylamide, N-acryloyloxysuccinimide, and 3-(trimethoxysilyl)propyl methacrylate, copoly(DMA-NAS-MAPS), which forms, by a simple and robust procedure, a functional nanometric film. The polymeric coating with a thickness that does not appreciably alter the optical properties of the silicon oxide confers to the slides optimal binding specificity leading to a high signal-to-noise ratio. The present work aims to demonstrate the great potential that exists by combining an optimized reflective substrate with a high performance surface chemistry. Moreover, the techniques chosen for both the substrate and surface chemistry are simple, inexpensive, and amenable to mass production. The present application highlights their potential use for diagnostic applications of real clinical relevance. The coated silicon slides, tested in protein and peptide microarrays for detection of specific antibodies, lead to a 5-10-fold enhancement of the fluorescence signals in comparison to glass slides.

79 citations

Patent
03 Aug 2006
TL;DR: In this paper, a spectrum usage policy server for cognitive radio systems is proposed. But the spectrum usage policies are broadcast to the user terminals, and the policy server does not control spectrum usage.
Abstract: A communication network such as a cellular network or a WLAN includes a set of user terminals. Within the communication network, a system dynamically controls spectrum usage. The system includes a functionality sensor for sensing spectrum usage within the area covered by the communication network, and a policy server for producing, as a function of the sensed spectrum usage, spectrum usage policies for the communication network. A broadcasting arrangement broadcasts the spectrum usage policies to the user terminals. The system is applicable to cognitive radio systems.

79 citations


Authors

Showing all 17185 results

NameH-indexPapersCitations
Bharat Bhushan116127662506
Albert Polman9744542985
G. Pessina8482830807
Andrea Santangelo8388629019
Paolo Mattavelli7448219926
Daniele Ielmini6836716443
Jean-François Carpentier6245914271
Robert Henderson5844013189
Bruce B. Doris5660412366
Renato Longhi551778644
Aldo Romani5442511513
Paul Muralt5434412694
Enrico Zanoni5370513926
Gaudenzio Meneghesso5170312567
Franco Zappa502749211
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
202225
2021560
2020798
2019952
2018948
2017781