Concept

Dielectric loss

Related publications (290)

Polarization Screening in Multiferroic (Ga,Mn)As/P(VDF-TrFE) Transistors

Nava Setter, Igor Stolichnov, Sebastian Riester, Evgeny Mikheev

Ferroelectric copolymers of polyvinylidene fluoride and trifluoroethylene are attractive gate materials because of a rather high remanent polarization, low dielectric permittivity, and easy integration on semiconductors due to the low processing temperatur ...

2011

Improved Computation of Propagation Losses in Waveguide Structures Using Perturbation of Boundary Conditions

Michael Mattes

In this letter, a method for the improved consideration of propagation losses in metallic waveguide structures is presented. The method relies on the perturbation of the boundary conditions on the metallic walls of the waveguides. Following this advanced t ...

Institution of Engineering and Technology2011

Development of Passivated Heterogeneous Metal Nanogaps Using E-Beam Overlay Techniques

Nico de Rooij, Terunobu Akiyama, Sebastian Gautsch, Yexian Wu

We present a planar nanogap structure with heterogeneous metal electrodes separated by a distance of tens of nanometers. This asymmetric nanodevice is meant for metal/molecule/metal transport analysis. The heterogeneous aspect of the metal electrodes is me ...

Elsevier Science, Reg Sales Off, Customer Support Dept, 655 Ave Of The Americas, New York, Ny 10010 Usa2011

Advanced Analysis of Propagation Losses in Rectangular Waveguide Structures Using Perturbation of Boundary Conditions

Michael Mattes

In this paper, propagation losses effects present in rectangular waveguide structures are rigorously considered. For this purpose, a new formulation based on the perturbation of the boundary conditions on the metallic walls of the waveguides combined with ...

2011

Energy alignment and surface dipoles of rylene dyes adsorbed to TiO2 nanoparticles

Ulf Anders Hagfeldt

The energy loss in dye-sensitized solar cells calcd. from the energy difference between the lowest electronic transition of the dye and the obtained open-circuit voltage is often 1 eV or even more. To minimize this loss, it is important to accurately det. ...

2011

Domain wall contributions in Pb(Zr,Ti)O3 ceramics at morphotropic phase boundary: A study of dielectric dispersion

Dragan Damjanovic, Li Jin, Viktor Porokhonskyy

The dielectric properties of undoped, Nb-, and Fe-doped Pb(Zr,Ti)O3 ceramics with composition near morphotropic phase boundary were investigated in the frequency range from 1 MHz to 20.2 GHz at room temperature. Temperature dependences of dielectric permit ...

American Institute of Physics2010

Lattice dynamics and dielectric response of undoped, soft and hard PbZr0.42Ti0.58O3

Dragan Damjanovic, Li Jin, Viktor Porokhonskyy

In this study, ceramic samples of lead zirconate titanate Pb(Zr0.42Ti0.58)O3 (PZT 42/58) doped with Fe (hard) and Nb (soft) were studied by Raman, infrared (IR) and THz spectroscopy in the temperature range from 900 to 20 K. From the evaluation of the IR a ...

Taylor & Francis2010

Self-assembled ferroelectric-dielectric nanocomposite films for tunable applications

Nava Setter, Paul Muralt, Alexander Tagantsev, Maxim Gureev, Silviu Cosmin Sandu

Nanocomposite films consisting of BaTiO3 and CeO2 have been grown by a self-assembled approach. The composite structure of those films varied with the volume fractions of BaTiO3 and CeO2. A BaTiO3 in the form of inclined nano-fibers embedded in CeO2 matrix ...

Iop Publishing Ltd, Dirac House, Temple Back, Bristol Bs1 6Be, England2010

A Study of the Surface Plasmon Resonance of Silver Nanoparticles by the Discrete Dipole Approximation Method: Effect of Shape, Size, Structure, and Assembly

Francesco Stellacci

The surface plasmon resonance (SPR) of silver nanoparticles (AgNPs) was studied with the discrete dipole approximation considering different shapes, sizes, dielectric environments, and supraparticles assemblies. In particular, we focused our simulations on ...

2010

Magnetodielectric coupling of infrared phonons in single-crystal Cu2OSeO3

Helmuth Berger

Reflection and transmission as a function of temperature (5-300 K) have been measured on a single crystal of the magnetoelectric ferrimagnetic compound Cu2OSeO3 utilizing light spanning the far infrared to the visible portions of the electromagnetic spectr ...

2010

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