Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Articles Article Faculty Publications -Articles Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Direct ink writing of nickel oxide-based thin films for room temperature gas detection Subject The topic of the resource CO2; gas sensor; graphene; nickel oxide; NO2; silver nanowires Description An account of the resource The rapid industrial growth and increasing population have led to significant pollution and deterioration of the natural atmospheric environment. Major atmospheric pollutants include NO2 and CO2. Hence, it is imperative to develop NO2 and CO2 sensors for ambient conditions, that can be used in indoor air quality monitoring, breath analysis, food spoilage detection, etc. In the present study, two thin film nanocomposite (nickel oxide-graphene and nickel oxide-silver nanowires) gas sensors are fabricated using direct ink writing. The nano-composites are investigated for their structural, optical, and electrical properties. Later the nano-composite is deposited on the interdigitated electrode (IDE) pattern to form NO2 and CO2 sensors. The deposited films are then exposed to NO2 and CO2 gases separately and their response and recovery times are determined using a custom-built gas sensing setup. Nickel oxide-graphene provides a good response time and recovery time of 10 and 9 s, respectively for NO2, due to the higher electron affinity of graphene towards NO2. Nickel oxide-silver nanowire nano-composite is suited for CO2 gas because silver is an excellent electrocatalyst for CO2 by giving response and recovery times of 11 s each. This is the first report showcasing NiO nano-composites for NO2 and CO2 sensing at room temperature. 2025 Chinese Institute of Electronics. Creator An entity primarily responsible for making the resource Thakur N.; Murthy H.; Arumugam S.; Thomas N.; Koshy A.M.; Swaminathan P. Source A related resource from which the described resource is derived Journal of Semiconductors, Vol-46, No. 1 Publisher An entity responsible for making the resource available Institute of Physics Date A point or period of time associated with an event in the lifecycle of the resource 2025-01-01 Identifier An unambiguous reference to the resource within a given context <a href="https://doi.org/10.1088/1674-4926/24080025" target="_blank" rel="noreferrer noopener">https://doi.org/10.1088/1674-4926/24080025</a> <a href="https://www.scopus.com/inward/record.uri?eid=2-s2.0-85216069819&doi=10.1088%2F1674-4926%2F24080025&partnerID=40&md5=b2fd12f1b4ebdb004eb92487086b4573" target="_blank" rel="noreferrer noopener">https://www.scopus.com/inward/record.uri?eid=2-s2.0-85216069819&doi=10.1088%2f1674-4926%2f24080025&partnerID=40&md5=b2fd12f1b4ebdb004eb92487086b4573</a> Rights Information about rights held in and over the resource Restricted Access Relation A related resource ISSN: 16744926 Format The file format, physical medium, or dimensions of the resource Online Language A language of the resource English Type The nature or genre of the resource Article Coverage The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant Thakur N., Department of Electronics and Communication Engineering, School of Engineering and Technology, CHRIST University, Kumbalagodu Karnataka, Bengaluru, 560074, India; Murthy H., Department of Electronics and Communication Engineering, School of Engineering and Technology, CHRIST University, Kumbalagodu Karnataka, Bengaluru, 560074, India; Arumugam S., Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Tamil Nadu, Chennai, 600036, India; Thomas N., Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Tamil Nadu, Chennai, 600036, India; Koshy A.M., Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Tamil Nadu, Chennai, 600036, India; Swaminathan P., Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Tamil Nadu, Chennai, 600036, India