Structural, electrical, and acoustical properties of graphene oxide films for acoustoelectronic applications

Abstract

Graphene oxide (GO) possesses some unique properties, which allow its technological applications in many fields (energy storage, microelectronic devices, and chemical sensors). It can also be used as a sensitive layer in the development of the chemical acoustoelectronic sensors. We characterized the produced GO films by measuring their structural properties, permittivity, and longitudinal/shear elastic moduli. For the first time, we determined the longitudinal and shear elastic moduli of a GO film under study to be 12.3 ± 0.1 MPa and 3.0 ± 0.1 MPa, respectively. The density of the GO film is equal to ∼850 kg m−3. The permittivity of the GO film was found to be 21 for a frequency f = 20 Hz. The obtained results may be used in further application of GO films in acoustoelectronic sensor devices.

Activated Carbon Obtained from Bamboo: Synthesis, Morphological, Vibrational, and Electrical Properties and Possible Temperature Sensor

“…From the Raman spectra, the graphite oxide domains were identified for the AC obtained from bamboo as source material; this behavior has been reported by our group and by Kuznetsova et al Figure a shows the AC‐573, AC‐773, AC‐873, and AC‐973 spectra. All samples exhibit two Raman bands centered at 1323 and 1593 cm −1 , respectively, the first wider than the second.…”