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Publications associées (37)

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

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

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

Carbon nanotube vertical membranes for electrostatically actuated micro-electro-mechanical devices

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

In this work, we investigate vertically aligned carbon nanotube (CNT) membranes as building blocks to realize electrostatically actuated micro-electro-mechanical-systems (M EMS). The fabricated CNT dense arrays are grown on adjacent metal electrodes and ca ...

Elsevier2010

The critical role of the underlayer material and thickness in growing vertically aligned carbon nanotubes and nanofibers on metallic substrates by chemical vapor deposition

Donatello Acquaviva

Vertically aligned carbon nanotubes and nanofibers are grown on metallic Ta and Pd underlayers at temperatures below 500°C. Controlling the size of the grains of the underlayer film is critical because this leads to a more uniform distribution of catalyst ...

Wiley-Blackwell2010

Multi-walled carbon nanotubes functionalized by carboxylic groups: Activation of TiO2 (anatase) and phosphate olivines (LiMnPO4; LiFePO4) for electrochemical Li-storage

Michael Graetzel, Shaik Mohammed Zakeeruddin, Ladislav Kavan, Florian Le Formal

Multi-walled carbon nanotubes functionalized by carboxylic groups, exhibit better affinity towards TiO2 (P90, Degussa) as compared to that of pristine nanotubes. Also the electrochemical performance of TiO2 is improved by nanotube networking, but the Li-st ...

Elsevier2010

RF NEM capacitive switch based on dense horizontal arrays of CNTs

Mihai Adrian Ionescu, László Forró, Arnaud Magrez, Rita Smajda, Ji Cao, Anupama Arun, Donatello Acquaviva

Carbon nanotubes (CNTs) have been considered one of the most promising material to make nanodevices, in particular nanoelectromechanical systems (NEMS), due to their remarkable mechanical (Young's modulus ∼ 1 TPa) and electrical (high conductivity for meta ...

2010

Capacitive nanoelectromechanical switch based on suspended carbon nanotube array

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

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

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

Tunable Electromechanical Resonator Based On Carbon Nanotube Array Suspended Gate Field Effect Transistor (Cnt-Sgfet)

Mihai Adrian Ionescu, Daniel Grogg, Anupama Arun

In this paper we report the first experimental demonstration of Micro-Electro-Mechanical resonator based on a Carbon Nanotube-Array-Suspended-Gate-Field-Effect-Transistor (CNT-SGFET). A dense array of single-walled CNT aligned by ac-dielectrophoresis techn ...

IEEE Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, NJ 08855-1331 USA2010

Micro-Electro-Mechanical Switch Based on Suspended Horizontal Dense Mat of CNTs by FIB Nanomanipulation

Mihai Adrian Ionescu, Arnaud Magrez, Daniel Grogg, Rita Smajda, Anupama Arun, Donatello Acquaviva

The paper presents the carbon nanotubes (CNTs) alignment and length dependence with respect to the catalyst pattern design, the fabrication of a CNT MEM switch, nanomanipulating a CNT array by FIB and the electrical characterization of the device to evalua ...

Elsevier Science, Reg Sales Off, Customer Support Dept, 655 Ave Of The Americas, New York, Ny 10010 Usa2009

Time dependent growth of vertically aligned carbon nanotube forest using a laser activated catalytical CVD method

Yves Bellouard

We report the growth of vertically aligned single-wall and multi-wall carbon nanotube forest using a Laser Activated – Catalytic Chemical Vapor Deposition process. The experiments were performed in a cold-wall reactor filled with an ethylene-hydrogen-argon ...

Wiley-Blackwell2008

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