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- W4327711482 abstract "Nanoelectrospray laser deposition (NELD) of semiconductor and metal nanoparticles is a powerful and potential technology for the on-demand printing of precise and complex functional microarchitectures. In this study, a CO<sub>2</sub> laser is used to deposit and sinter titanium dioxide (TiO<sub>2</sub>) nanoparticles on borosilicate and quartz substrates for transparent film applications. The CO<sub>2</sub> laser is chosen for sintering because TiO<sub>2</sub> has a lower spectral absorption at 10.6 <i>μm</i> wavelength. Therefore, the 10.6 <i>μm</i> laser can transmit through the deposited TiO<sub>2</sub> films, and then, the whole film thickness can be thermally modified by the heating effect of laser. The effects of wet-deposition process parameters and laser processing parameters on the morphological, optical, and structural properties of TiO<sub>2</sub> patterns are examined. The TiO<sub>2</sub> microstructure and surface morphology were studied by optical and scanning electron microscopy techniques. X-ray diffraction (XRD) was used to investigate the structural characteristics after laser sintering. The optical transmittance of the wet and sintered TiO<sub>2</sub> films was characterized by UV/Vis/NIR spectrophotometry. We established that the overall improvement of the morphological and optical properties of the sintered films originates from the enhanced bonding and physical interconnectivity of TiO<sub>2</sub> nanoparticles, resulting in the formation of a dense and compact ceramic layer. XRD data points out that the anatase phase of TiO<sub>2</sub> is preserved after laser sintering, eliminating the presence of TiO<sub>2</sub> rutile traces. An average transmittance above ~90% was achieved in the NIR region." @default.
- W4327711482 created "2023-03-18" @default.
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- W4327711482 date "2023-03-17" @default.
- W4327711482 modified "2023-09-29" @default.
- W4327711482 title "Transmittance of TiO2 Nanoparticle-based Films Deposited by CO2 Laser Heating" @default.
- W4327711482 doi "https://doi.org/10.1117/12.2647981" @default.
- W4327711482 hasPublicationYear "2023" @default.
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