Characterization of amorphous aluminium oxide thin films synthesized by mist-CVD

Water-Assisted Transformation of Aluminum Alloys to Ceramic Nanowires and Aerogels

“…One-dimensional (1D) ceramic nanowires (NWs) with high mechanical strength can be used to produce lightweight, high load-bearing, and thermally stable composite materials. , Reduced size, a high surface-to-volume ratio, and a high aspect ratio give 1D ceramic NWs unique magnetic, thermal, optical, electrical, and mechanical properties that are often superior to those of conventional microscopic and macroscopic counterparts, including micrometer-scale fibers. These features make ceramic NWs highly attractive for use in electronics, photovoltaics, advanced sensing, electrochemical, and electromechanical devices. − Alumina (Al 2 O 3 ) NWs possess desirable characteristics for various applications due to their relatively lightweight (density of ∼3.7 g/cm 3 for nonporous NWs), high strength (reported shear modulus of ∼124 GPa, Young’s modulus of 210–300 GPa, and maximum tensile strength of up to ∼12 GPa), a wide band gap (5.1–8.8 eV), a moderate dielectric constant (∼9.8), a high thermal stability (up to ∼1200 °C), and modest thermal conductivity (∼18 W m –1 K) . However, conventional synthesis of Al 2 O 3 and other ceramic NWs through processes such as chemical vapor deposition (CVD) and electrodeposition can be complex, expensive, and challenging to scale, compared to solution-based processes. − …”

“…These features make ceramic NWs highly attractive for use in electronics, photovoltaics, advanced sensing, electrochemical, and electromechanical devices. 7−9 Alumina (Al 2 O 3 ) NWs possess desirable characteristics for various applications due to their relatively lightweight (density of ∼3.7 g/cm 3 for nonporous NWs), high strength (reported shear modulus of ∼124 GPa, Young's modulus of 210−300 GPa, and maximum tensile strength of up to ∼12 GPa), 10 a wide band gap (5.1−8.8 eV), 11 a moderate dielectric constant (∼9.8), 12 a high thermal stability (up to ∼1200 °C), and modest thermal conductivity (∼18 W m −1 K). 13 However, conventional synthesis of Al 2 O 3 and other ceramic NWs through processes such as chemical vapor deposition (CVD) and electrodeposition can be complex, expensive, and challenging to scale, compared to solution-based processes.…”