Special Issue "Combinatorial Thin Films"
A special issue of Coatings (ISSN 2079-6412).
Deadline for manuscript submissions: closed (15 October 2018)
Combinatorial Thin-Film Research Laboratory (CTRL) at National Cheng Kung University (NCKU)
A combinatorial thin-film research laboratory (CTRL) was established at the NCKU in May, 2011. This is the first lab of its kind among the academic research community in Taiwan. Our manufacturing facilities include a high throughput DC/RF sputtering system and a thickness gradient spin coater. These tools enable both physical and chemical depositions for metal and oxide nanostructured composition spreads.
Piezophotocatalysis results from a close coupling of piezophototronics (semiconductors, piezoelectricity, and photonics) and photocatalysis. The piezophototronic effect is used to substantially enhance the photocatalytic efficiency by modulating the piezopotentials across functional materials to achieve synergistic catalytic performance.
Nanostructured Material Fabrication Using Sputtering
A standard reactive sputtering is directly employed to grow nanostructured oxides and nitrides to apply to photocatalysis, without any exceptional treatment.
A probe capable of measuring piezotronic and piezophototronic effects has beens developed in our group on the basis of the I-V probe. One tungsten (W) probe was grounded and placed in contact with the sample; the other W probe, consisting of a sensitive stress sensor, was used to apply a bias and stress simultaneously. A stage that can move along the z axis was designed to allow the probe position-tuning to achieve required stresses. The I-V characteristics were then evaluated under various stresses in the GPa range with or without illumination.
Prof. Dr. Kao-Shuo Chang
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