[10p-PA1-1~13] 9.2 Nanoparticles, Nanowires and Nanosheets

▲ [10p-PA1-10] Gas Sensors Based on Laser-Ablated Nanomaterials

Prabakaran Shankar¹, 〇Sergei Kulinich¹, Satoru Iwamori¹ (1.Tokai University)

Keywords:Laser ablation in water, Gas sensing, Chemiresistive sensor

Nanomaterials prepared via laser ablation in liquid (LAL) are known to be applied in several fields, including such as electronics, catalysis and photocatalysis, biomedicine, optics and optoelectronics, energy related technologies and so on. As LAL products are often semiconductor metal oxides (or metal sulfides) with unique morphology and surface defects, such materials may also be attractive as components for chemiresistive gas sensors. Nevertheless, to date, only a few attempts were made to exploit LAL-generated nanomaterials as gas sensors. Besides, no devices working at room temperature were reported. In this work, we fabricated gas sensors based on ZnO and SnO_x nanomaterials prepared by means of ns- and ms- pulsed lasers in water. We show that such nanomaterials can demonstrate selective and sensitive gas sensing at room temperature.