Publications de Donatello Acquaviva

Striking Influence of the Catalyst Support and Its Acid–Base Properties: New Insight into the Growth Mechanism of Carbon Nanotubes

Arnaud Magrez, Gabor Laurenczy, Endre Horvath, Jin Won Seo, Rita Smajda, Donatello Acquaviva, Juan Carlos Andresen

In the accepted mechanisms of carbon nanotube (CNT) growth by catalytic chemical vapor deposition (CCVD), the catalyst support is falsely considered as a passive material whose only role is to prevent catalytic particles from coarsening. The chemical chang ...

2011

Capacitive nanoelectromechanical switch based on suspended carbon nanotube array

Mihai Adrian Ionescu, László Forró, Arnaud Magrez, Didier Bouvet, Rita Smajda, Donatello Acquaviva, Anupama Arun

We present the fabrication and high frequency characterization of a capacitive nanoelectromechanical system (NEMS) switch using a dense array of horizontally aligned single-wall carbon nanotubes (CNTs). The nanotubes are directly grown onto metal layers wi ...

American Institute of Physics2010

Tunable MEMS capacitors using vertical carbon nanotube arrays grown on metal lines

Mihai Adrian Ionescu, Montserrat Fernandez-Bolanos Badia, Donatello Acquaviva, Anupama Arun

In this work, tunable MEMS capacitors are realized using a vertically grown carbon nanotube array. The vertical CNT array forms an effective CNT membrane, which can be electrostatically actuated like the conventional metal plates used in MEMS capacitors. T ...

2010

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

Micro-Electro-Mechanical Metal-Air-Insulator-Semiconductor Diode Switch

Mihai Adrian Ionescu, Didier Bouvet, Dimitrios Tsamados, Donatello Acquaviva

The design, fabrication and characterization of Micro-electro-mechanical metal-air-insulator-semiconductor (MEM-MAIS) diode switch are originally reported. An abrupt switching from off-state to Fowler-Nordheim tunneling current in on-state is induced by th ...

2008