Please use this identifier to cite or link to this item: http://cris.utm.md/handle/5014/126
Title: 3D-Printed Chemiresistive Sensor Array on Nanowire CuO/Cu2O/Cu Heterojunction Nets
Authors: SIEBERT, Leonard 
LUPAN, Oleg 
MIRABELLI, Mattia 
ABABII, Nicolai 
TERASA, Maik-Ivo 
KAPS, Soren 
CRETU, Vasilii 
VAHL, Alexander 
FAUPEL, Franz 
ADELUNG, Rainer 
Keywords: 3D-printing;Cu deposition;heterojunction;CuO/Cu2O/Cu;gas sensing
Issue Date: 19-Jun-2019
Source: TY - JOUR AU - Oleg, Lupan AU - Siebert, Leonard AU - Nicolai, Ababii AU - Cretu, Vasilii AU - Kaps, Sören AU - Vahl, Alexander AU - Faupel, Franz AU - Adelung, Rainer PY - 2019/06/19 SP - 25508 EP - 25515 T1 - 3D-Printed Chemiresistive Sensor Array on Nanowire CuO/Cu2O/Cu Heterojunction Nets VL - 11 DO - 10.1021/acsami.9b04385 JO - ACS Applied Materials & Interfaces ER -
Journal: ACS APPLIED MATERIALS & INTERFACES 
Abstract: 
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.
URI: http://cris.utm.md/handle/5014/126
ISSN: 1944-8244
DOI: 10.1021/acsami.9b04385
Appears in Collections:Journal Articles

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