title: High-performance flexible hydrogen sensor made of WS₂ nanosheet-Pd nanoparticle composite film.
abstract: We report a flexible hydrogen sensor, composed of WS2 nanosheet-Pd nanoparticle composite film, fabricated on a flexible polyimide substrate. The sensor offers the advantages of light-weight, mechanical durability, room temperature operation, and high sensitivity. The WS2-Pd composite film exhibits sensitivity (R 1/R 2, the ratio of the initial resistance to final resistance of the sensor) of 7.8 to 50,000 ppm hydrogen. Moreover, the WS2-Pd composite film distinctly outperforms the graphene-Pd composite, whose sensitivity is only 1.14. Furthermore, the ease of fabrication holds great potential for scalable and low-cost manufacturing of hydrogen sensors.
authors.affiliation: Materials Science and Engineering Program, University of California-San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA.
authors.forename: Cihan
authors.initials: C
authors.lastname: Kuru
authors.forename: Duyoung
authors.initials: D
authors.lastname: Choi
authors.forename: Alireza
authors.initials: A
authors.lastname: Kargar
authors.forename: Chin Hung
authors.initials: CH
authors.lastname: Liu
authors.forename: Serdar
authors.initials: S
authors.lastname: Yavuz
authors.forename: Chulmin
authors.initials: C
authors.lastname: Choi
authors.forename: Sungho
authors.initials: S
authors.lastname: Jin
authors.forename: Prabhakar R
authors.initials: PR
authors.lastname: Bandaru