Concept

Polyfluorure de vinylidène

Publications associées (166)

Graph Chatbot

Chattez avec Graph Search

Posez n’importe quelle question sur les cours, conférences, exercices, recherches, actualités, etc. de l’EPFL ou essayez les exemples de questions ci-dessous.

AVERTISSEMENT : Le chatbot Graph n'est pas programmé pour fournir des réponses explicites ou catégoriques à vos questions. Il transforme plutôt vos questions en demandes API qui sont distribuées aux différents services informatiques officiellement administrés par l'EPFL. Son but est uniquement de collecter et de recommander des références pertinentes à des contenus que vous pouvez explorer pour vous aider à répondre à vos questions.

Connectez-vous pour utiliser Chat avec Graph Search

Pyroelectric thin-film sensor array

Nava Setter, Paul Muralt, Peter Ryser

Pyroelectric thin-film point detectors and 1 x 12 arrays have been fabricated and characterized. They consist of sol-gel-deposited PZT thin-film elements on micromachined Si3N4/SiO2 membranes. The measured current and voltage response as a function of modu ...

1997

PZT phase formation monitored by high-temperature X-ray diffractometry

Nava Setter

The crystallisation kinetics of amorphous sol-gel PZT thin films were investigated using high-temperature X-my diffraction. Crystallisation for different isotherms was monitored as a function of time. Phase transformation data were obtained from integrated ...

1997

Efficient active Bragg grating tunable filters

René Salathé, Hans Georg Limberger

Reflection, transmission and loss filters based on fiber Bragg gratings are key components in future wavelength division multiplexing telecommunication networks. A shift of the Bragg wavelength, λg, can be achieved by applying a strain or heating th ...

Opt. Soc. America1997

Thin film pyroelectric arrays as infra-red detectors

Paul Muralt, Andreas Seifert

Pyroelectric thin film 12-element linear arrays (element size 0.4x0.9 mm(2)) have been fabricated by standard photolithography techniques on silicon substrates. A voltage responsivity of almost 800 V/W in air and 3000 V/W in vacuum is measured at low frequ ...

1997

Fatigued state of the Pt-PZT-Pt system

Alexander Tagantsev, Enrico Colla

The fatigued state of Pt-PZT-Pt ferroelectric capacitors (FECAP) was investigated by means of piezoelectric coefficient, polarisation charge and permittivity measurements. The suppression of switching polarisation P-r(s) appears to be the result of freezin ...

1997

Polymer bound chromogenic crown ethers for optical ion-detection devices

Harm-Anton Klok

The concept of photoinduced electron transfer has been explored for the development of polymeric transducers for optical ion-detection devices. For this purpose, a series of N-(9-anthrylmethyl)monoaza-18-crown-6 substituted poly(methacrylate)s were prepare ...

1996

Sol-gel deposition of PZT thin films on ceramic ZrO2 substrates

Nava Setter, Paul Muralt, Thomas Maeder

Pb(Zr1–xTix)O3 thin films (x = 0.55 and 0.85) were prepared on fine grained, polished ZrO2 ceramic substrates by a sol-gel method. The high thermal expansion of ZrO2 relative to Si allows the preparation of thicker PZT films with reduced thermal stress. Fo ...

IEEE1996

Pb(Zr,Ti)O3 thin films on zirconium membranes for micromechanical applications

Nava Setter, Paul Muralt, Thomas Maeder

An efficient, electrically conductive, chemical barrier for the integration of piezoelectric Pb(Zr,Ti)O3 (PZT) films on reactive metal substrates has been developed, opening new possibilities for PZT integration on micromechanical and semiconductor devices ...

American Institute of Physics1996

PZT films for micro-pumps

Nava Setter, Dragan Damjanovic, Georges-André Racine

A micro-pump for medical applications is being developed using organometallic derived PZT thin films and silicon micromachining technology. Critical issues include the deposition of 'thick' PZT films (1 to 2 mu m thickness), film processing compatibility w ...

1995

Interferometric study of piezoelectric degradation in ferroelectric thin films

Nava Setter, Paul Muralt, Thomas Maeder, Enrico Colla

Degradation of piezoelectric properties has been studied in ferroelectric PZT films by means of optical interferometry. The degradation under de bias and aging of poled films have been observed. The decay of piezoelectric coefficient with time is described ...

Elsevier1995