Publications de Pavel Mokry | EPFL Graph Search

Identification of microscopic domain wall motion from temperature dependence of nonlinear dielectric response

It is known that the permittivity of ferroelectric polydomain films and single crystals in weak electric fields is strongly enhanced by the reversible movement of pinned domain walls. Two mechanisms of the movement exist: first, the bending of free segment ...

Amer Inst Physics2017

Static negative capacitance of a ferroelectric nano-domain nucleus

Nava Setter, Tomas Sluka, Pavel Mokry

Miniaturization of conventional field effect transistors (FETs) approaches the fundamental limits beyond which opening and closing the transistor channel require higher gate voltage swing and cause higher power dissipation and heating. This problem could b ...

Amer Inst Physics2017

Identification of defect distribution at ferroelectric domain walls from evolution of nonlinear dielectric response during the aging process

Tomas Sluka, Pavel Mokry

The motion of ferroelectric domain walls greatly contributes to the macroscopic dielectric and piezoelectric response of ferroelectric materials. The domain-wall motion through the ferroelectric material is, however, hindered by pinning on crystal defects, ...

Amer Physical Soc2016

Adaptive Vibration Suppression System: An Iterative Control Law for a Piezoelectric Actuator Shunted by a Negative Capacitor (vol 59, pg 2785, 2012)

Tomas Sluka, Pavel Mokry

Ieee-Inst Electrical Electronics Engineers Inc2014

Adaptive Vibration Suppression System: An Iterative Control Law for a Piezoelectric Actuator Shunted by a Negative Capacitor

Tomas Sluka, Pavel Mokry

An adaptive system for the suppression of vibration transmission using a single piezoelectric actuator shunted by a negative capacitance circuit is presented. It is known that by using a negative-capacitance shunt, the spring constant of a piezoelectric ac ...

Ieee-Inst Electrical Electronics Engineers Inc2012

Ferroelectric charged domain walls in an applied electric field

Nava Setter, Alexander Tagantsev, Maxim Gureev, Pavel Mokry

The interaction of electric field with charged domain walls in ferroelectrics is theoretically addressed. Ageneral expression for the force acting per unit area of a charged domain wall carrying free charge is derived. It is shown that, in proper ferroelec ...

American Physical Society2012

A theory of sound transmission through a clamped curved piezoelectric membrane connected to a negative capacitor

Hervé Lissek, Tomas Sluka, Pavel Mokry

An analytical calculation of the acoustic transmission loss of sound propagating through a thin cylindrically curved piezoelectric membrane, which is rigidly clamped at its straight ends, is presented. The membrane is placed inside an acoustic tube and con ...

Elsevier2010

Design of switching amplifier used in negative impedance dispoal for the active control of transducer's acoustic impedance

Hervé Lissek, Romain Boulandet, Pavel Mokry

We present a concept of "active material" with variable acoustic properties, being constituted of an electroacoustic transducer which acoustic impedance can be changed by an active mean. Among the different ways to obtain variable acoustic properties on an ...

2009

Evidence for dielectric aging due to progressive 180 degrees domain wall pinning in polydomain Pb(Zr0.45Ti0.55)O-3 thin films

Nava Setter, Dragan Damjanovic, Alexander Tagantsev, Igor Stolichnov, Pavel Mokry

An evidence that the dielectric aging in the polydomain Pb(Zr0.45Ti0.55)O-3 thin films is controlled by progressive pinning of 180 degrees domain walls is presented. To provide such a conclusion, we use a general method, which is based on the study of the ...

2009

Erratum: Evidence for dielectric aging due to progressive 180° domain wall pinning in polydomain Pb(Zr0.45Ti0.55)O3 thin films [Phys. Rev. B 79, 054104 (2009)]

Nava Setter, Dragan Damjanovic, Alexander Tagantsev, Igor Stolichnov, Pavel Mokry

2009