Alumina thin films were deposited on fused quartz and SS304 substrate by pulsed rf magnetron sputtering with both direct and reactive methods. The films were characterised by energy dispersive X-ray spectroscopy, X-ra...Alumina thin films were deposited on fused quartz and SS304 substrate by pulsed rf magnetron sputtering with both direct and reactive methods. The films were characterised by energy dispersive X-ray spectroscopy, X-ray diffraction, scanning electron microscopy, field emission scanning electron microscopy and atomic force microscopy to reveal the microstructure, surface morphology and topography of thin films. Transmittance and reflectance of alumina thin film were evaluated after deposition on the quartz substrate. Transmittance of the quartz remains almost un-altered when alumina was deposited by the reactive sputtering. A marginal decrease of ~4% in the transmittance of quartz was, however, observed after deposition of alumina by direct sputtering. Infrared emittance of the substrate also remains almost constant after deposition of thin alumina film. Further, as-deposited alumina on SS304 obtained by both direct and reactive sputtering process was amorphous in nature. However, after annealing crystalline peaks were observed.展开更多
The inexpensive and green method of synthesis for self-assembled micro/nano structures is an important area of emerging research.Such structures can be chemically tuned with predesigned functional properties.Therefore...The inexpensive and green method of synthesis for self-assembled micro/nano structures is an important area of emerging research.Such structures can be chemically tuned with predesigned functional properties.Therefore,they hold very good promise for future applications,e.g.,biomedicine,electronic device,solar energy,gas sensing.Here we report for the first time an inexpensive and green method for chemical deposition of magnesium hydroxide(Mg(OH)_(2))micro/nano flowers in thin films on commercial soda lime silica glass substrates at room temperature.Under identical conditions,chemically synthesized Mg(OH)_(2) powders are also prepared in absence of the soda lime silica glass substrates.The condition that favors the growth of micro/nano flowers in thin films is identified from X-ray diffraction(XRD),scanning electron microscopy(SEM),field emission scanning electron microscopy(FE-SEM),transmission electron microscopy(TEM),and energy dispersive X-ray spectroscopy(EDX)data.Finally,the possible growth mechanism of micro/nano flowers in thin films is discussed.展开更多
文摘Alumina thin films were deposited on fused quartz and SS304 substrate by pulsed rf magnetron sputtering with both direct and reactive methods. The films were characterised by energy dispersive X-ray spectroscopy, X-ray diffraction, scanning electron microscopy, field emission scanning electron microscopy and atomic force microscopy to reveal the microstructure, surface morphology and topography of thin films. Transmittance and reflectance of alumina thin film were evaluated after deposition on the quartz substrate. Transmittance of the quartz remains almost un-altered when alumina was deposited by the reactive sputtering. A marginal decrease of ~4% in the transmittance of quartz was, however, observed after deposition of alumina by direct sputtering. Infrared emittance of the substrate also remains almost constant after deposition of thin alumina film. Further, as-deposited alumina on SS304 obtained by both direct and reactive sputtering process was amorphous in nature. However, after annealing crystalline peaks were observed.
文摘The inexpensive and green method of synthesis for self-assembled micro/nano structures is an important area of emerging research.Such structures can be chemically tuned with predesigned functional properties.Therefore,they hold very good promise for future applications,e.g.,biomedicine,electronic device,solar energy,gas sensing.Here we report for the first time an inexpensive and green method for chemical deposition of magnesium hydroxide(Mg(OH)_(2))micro/nano flowers in thin films on commercial soda lime silica glass substrates at room temperature.Under identical conditions,chemically synthesized Mg(OH)_(2) powders are also prepared in absence of the soda lime silica glass substrates.The condition that favors the growth of micro/nano flowers in thin films is identified from X-ray diffraction(XRD),scanning electron microscopy(SEM),field emission scanning electron microscopy(FE-SEM),transmission electron microscopy(TEM),and energy dispersive X-ray spectroscopy(EDX)data.Finally,the possible growth mechanism of micro/nano flowers in thin films is discussed.
