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Reconfigurable electronics based on metal-insulator transition

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Quantification and Modeling of Wet-Antenna Attenuation for Commercial Microwave Links

Alexis Berne, Marc Schleiss

Data from a new experimental setup deployed in Dübendorf (Switzerland) are used to quantify and model the magnitude and dynamics of the wet-antenna attenuation (WAA) affecting a 1.85-km commercial microwave link at 38 GHz. The results show that the WAA exh ...

2013

Vanadium Dioxide: A Peierls-Mott Insulator Stable against Disorder

Cédric Weber

Vanadium dioxide undergoes a first order metal-insulator transition at 340 K. In this Letter, we develop and carry out state-of-the-art linear scaling density-functional theory calculations refined with nonlocal dynamical mean-field theory. We identify a c ...

2012

Field-Effect Transistors Based on ZnO Nanowires

Daniel Dominik Kälblein

Semiconductor nanowires are an emerging class of materials with great potential for applications in future electronic devices. The small footprint and the large charge-carrier mobilities of nanowires make them potentially useful for applications with high- ...

EPFL2011

Ferroelectric Field Effect Transistor for Memory and Switch Applications

Giovanni Antonio Salvatore

Silicon technology has advanced at exponential rates both in performances and productivity through the past four decades. However the limit of CMOS technology seems to be closer and closer and in the future we might see an increasing number of hybrid appro ...

EPFL2011

Polaronic Conductivity in the Photoinduced Phase of 1T-TaS2

Helmuth Berger

The transient optical conductivity of photoexcited 1T-TaS2 is determined over a three-order-of-magnitude frequency range. Prompt collapse and recovery of the Mott gap is observed. However, we find important differences between this transient metallic state ...

2011

Active Microelectromechanical Resonator

Daniel Grogg

The progress in the technology of microelectronic devices has led to a strong miniaturization and high performance for circuits and systems, enabling modern applications such as mobile computing and communications. Today, remaining "off-chip" components th ...

EPFL2010

Nano-Electro-Mechanical Switches Based on Carbon Nanotubes Arrays

Donatello Acquaviva

In the last forty years the semiconductor industry focused on the downscaling process of the CMOS (Complementary Metal-Oxide-Semiconductor) technology, trying to follow as much as possible the empirical Moore's Law. In the last five years this trend has be ...

EPFL2010

RF MEMS Switches for Wide-band (5 - 40 GHz), Tuneable Filters and DMTL Phase Shifters

Montserrat Fernandez-Bolanos Badia

In wireless communications, radio frequency micro-electro-mechanical systems (RF MEMS) technology is attracting tremendous interest across the world as the needs of frequencies gets higher, data bandwidth gets larger and multiple broadband signals have to ...

EPFL2010

Dielectric measurements of tropical wood

Juan Ramon Mosig, Jean-François Zürcher, Olivier Videme Bossou

The aim of this paper is to determine the dielectric characteristics of tropical wood species at microwaves frequency in order to use them as planar antenna substrate. The measurements have been done on dried wood in the frequency range 8.2-12.4 GHz The su ...

2010

Switching field modulation of a nanomagnet by resonant microwave spin torque

Jean-Philippe Ansermet, Elena Murè

We report on the effect of a low amplitude microwave current on the switching field of magnetic layers in a 40 nm diameter pseudo-spin valve grown by template synthesis. We show a frequency dependence at room temperature reflecting the dynamic behavior of ...

2010