Conţinutul numărului revistei |
Articolul precedent |
Articolul urmator |
723 0 |
SM ISO690:2012 SIEBERT, Leonard, LUPAN, Oleg, MIRABELLI, Mattia, ABABII, Nicolai, TERASA, Maik-Ivo, KAPS, Soren, CREŢU, Vasilii, VAHL, Alexander, FAUPEL, Franz, ADELUNG, Rainer. 3D-Printed Chemiresistive Sensor Array on Nanowire CuO/Cu2O/Cu Heterojunction Nets. In: ACS Applied Materials and Interfaces, 2019, vol. 11, pp. 25508-25515. ISSN -. DOI: https://doi.org/10.1021/acsami.9b04385 |
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ACS Applied Materials and Interfaces | ||||||
Volumul 11 / 2019 / ISSN - /ISSNe 1944-8244 | ||||||
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DOI:https://doi.org/10.1021/acsami.9b04385 | ||||||
Pag. 25508-25515 | ||||||
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Rezumat | ||||||
In this work, the one-step three-dimensional (3D) printing of 20 nm nanowire (NW)-covered CuO/Cu2O/Cu microparticles (MPs) with diameters of 15-25 μm on the surface of the glass substrate forming an ordered net is successfully reported for the first time. 3D-printed Cu MP-based stripes formed nonplanar CuO/Cu2O/Cu heterojunctions after thermal annealing at 425 °C for 2 h in air and were fully covered with a 20 nm NW net bridging MPs with external Au contacts. The morphological, vibrational, chemical, and structural investigations were performed in detail, showing the high crystallinity of the NWs and 3D-printed CuO/Cu2O/Cu heterojunction lines, as well as the growth of CuO NWs on the surface of MPs. The gas-sensing measurements showed excellent selectivity to acetone vapor at an operating temperature of 350 °C with a high gas response about 150% to 100 ppm. The combination of the possibility of fast acetone vapor detection, low power consumption, and controllable size and geometry makes these 3D-printed devices ideal candidates for fast detection, as well as for acetone vapor monitoring (down to 100 ppm). This 3D-printing approach will pave a new way for many different devices through the simplicity and versatility of the fabrication method for the exact detection of acetone vapors in various atmospheres. |
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Cuvinte-cheie 3D-printing, Cu deposition, CuO/Cu2O/Cu, gas sensing, heterojunction |
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