Title :
Enhanced dynamic electromechanical properties of electrophoresis assembled carbon nanotube-polymer piezoelectric transducers
Author :
Zhang, D. ; Cui, T.
Author_Institution :
Dept. of Mech. Eng., Univ. of Minnesota, Minneapolis, MN, USA
Abstract :
This paper presents a controllable electrophoresis for assembled single-walled carbon nanotube (SWNT)/polymer transducers under an electric field excitation. The directed assembled high-density SWNT networks are verified with SEM micrograph and Raman spectroscopy. The dynamic electromechanical properties are characterized by a combinative approach of piezoelectric excitation and laser vibrometer measurement. A remarkable performance enhancement for such thin-film transducers in both resonant frequency and quality factor is demonstrated, compared with pure polymer. This observed enhancement can not only be exploited to tailor the thin-film transducers for desired electromechanical properties, but also create versatile and promising pathways for next-generation actuators, sensors, and microsystems with a high performance.
Keywords :
Raman spectroscopy; carbon nanotubes; electromechanical actuators; electrophoresis; micromechanical devices; piezoelectric transducers; vibration measurement; Raman spectroscopy; SEM micrograph; SWNT; dynamic electromechanical property; electrophoresis; laser vibrometer measurement; microsystems; next-generation actuators; piezoelectric excitation; quality factor; resonant frequency; sensors; single-walled carbon nanotube-polymer piezoelectric transducer; thin-film transducers; Electric potential; Films; Next generation networking; Optical polymers; Optical variables measurement; Transducers; Carbon nanotube; Dynamic mechanical property; Electrophoresis self-assembly; Piezoelectric transducers;
Conference_Titel :
Solid-State Sensors, Actuators and Microsystems Conference (TRANSDUCERS), 2011 16th International
Conference_Location :
Beijing
Print_ISBN :
978-1-4577-0157-3
DOI :
10.1109/TRANSDUCERS.2011.5969473
