Publications associées à Diapason

Shunt-Feedback Ring Oscillator: a New Topology for Wideband Multiphase Signal Generations

Pierre-André Farine, Cyril Botteron, Uroschanit Yodprasit, Alexander Heubi

A negative-feedback scheme is applied to the gain stage of RC and LC ring oscillators to extend the frequency tuning range and to enhance the maximum oscillation frequency, respectively. This can be achieved without penalties in power consumption, supply v ...

2007

Optical tuning of planar photonic crystals infiltrated with organic molecules

Romuald Houdré, Rolando Ferrini, Nicolas Le Thomas, Pascale El-Kallassi

The optical tuning of InP-based planar photonic crystals (PhCs) infiltrated with a photo-responsive liquid crystal system is presented. Photo-induced phase transitions of a liquid crystal blend doped with azobenzene molecules are used to tune the optical r ...

2007

Optimization methodology for piezoelectric transformers design

Yves Perriard, José Fernandez Lopez

The miniaturization of classical electromagnetic transformers raises certain problems such as manufacture both the coils and the magnetic core, increase in magnetic leak and especially electromagnetic pollution of the environment. One interesting solution ...

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Scanning Probe with Tuning Fork Sensor, Microfabricated Silicon Cantilever and Conductive Tip for Microscopy at Cryogenic Temperature

Nico de Rooij, Terunobu Akiyama, Kaspar Suter

A quartz tuning-fork (TF)-based scanning probe is presented for local electrical transport measurements on quantum devices below the liquid 4He temperature. The TF is utilized to drive and sense the mechanical oscillation of an attached, microfabricated ca ...

2006

Local Oxidation of Titanium Using Dynamic-Mode Tuning-Fork Probe with Microfabricated Silicon Cantilever

Nico de Rooij, Terunobu Akiyama, Kaspar Suter

We present a unique probe that is based on a quartz tuning fork and a microfabricated cantilever. The probe is self-actuating and self-sensing. The cantilever can be tailored to the needs of specific applications, in this case to feature an electrically co ...

2006

Q-factor optimization of a tuning-fork/fiber sensor for shear-force detection

Majed Chergui, Andrea Callegari, Jinquan Liu

We present the results of an exptl. and theor. study on the optimum design of shear-force sensors, used in scanning probe microscopes. We have optimized a configuration consisting of a tuning-fork/fiber-tip assembly, achieving quality factors (Q) exceeding ...

2005

Low-Power Adaptive Bias/Clock Generator Using 0.18um CMOS Technology for Multi-Core Continuous Voltage and Frequency Scaling

Yusuf Leblebici, Zeynep Toprak Deniz

This paper presents a continuous voltage and frequency scaling approach achieving lower transition (both energy and time) overheads implied by changing voltage levels, at a very low power dissipation and silicon area cost for multi-processor systems with i ...

2005

Laser a cavite verticale et a emission par surface

Elyahou Kapon, Alok Rudra, Vladimir Iakovlev, Alexei Sirbu

A tunable Fabry-Perot vertical cavity photonic device and a method of its fabrication are presented. The device comprises top and bottom semiconductor DBR stacks and a tunable air-gap cavity therebetween. The air-gap cavity is formed within a recess in a s ...

2005

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Diapason

Shunt-Feedback Ring Oscillator: a New Topology for Wideband Multiphase Signal Generations

Optical tuning of planar photonic crystals infiltrated with organic molecules

Optimization methodology for piezoelectric transformers design

Scanning Probe with Tuning Fork Sensor, Microfabricated Silicon Cantilever and Conductive Tip for Microscopy at Cryogenic Temperature

Local Oxidation of Titanium Using Dynamic-Mode Tuning-Fork Probe with Microfabricated Silicon Cantilever

Q-factor optimization of a tuning-fork/fiber sensor for shear-force detection

Low-Power Adaptive Bias/Clock Generator Using 0.18um CMOS Technology for Multi-Core Continuous Voltage and Frequency Scaling

Laser a cavite verticale et a emission par surface

Analogue self-calibration method and apparatus for low noise, fast and wide-locking range phase locked loop

Liquid crystal electric tuning of a photonic crystal laser

Graph Chatbot

Chattez avec Graph Search

Optimization methodology for piezoelectric transformers design

Optical tuning of planar photonic crystals infiltrated with organic molecules

Shunt-Feedback Ring Oscillator: a New Topology for Wideband Multiphase Signal Generations

Local Oxidation of Titanium Using Dynamic-Mode Tuning-Fork Probe with Microfabricated Silicon Cantilever

Low-Power Adaptive Bias/Clock Generator Using 0.18um CMOS Technology for Multi-Core Continuous Voltage and Frequency Scaling

Scanning Probe with Tuning Fork Sensor, Microfabricated Silicon Cantilever and Conductive Tip for Microscopy at Cryogenic Temperature

Q-factor optimization of a tuning-fork/fiber sensor for shear-force detection

Laser a cavite verticale et a emission par surface

Analogue self-calibration method and apparatus for low noise, fast and wide-locking range phase locked loop

Liquid crystal electric tuning of a photonic crystal laser