Achievement of controlled resistive response of nanogapped palladium film to hydrogen

M. Zhao, M. H. Wong, Chung Wo Ong

Research output: Journal article publicationJournal articleAcademic researchpeer-review

16 Citations (Scopus)


Palladium (Pd) film containing nanogaps of well controlled dimension was fabricated on a Si wafer having a high-aspect-ratio micropillar. The Pd film was arranged to experience hydrogen (H2)-induced volume expansion. (i) If the nanogap is kept open, its width is narrowed down. A discharge current was generated to give a strong, fast, and repeatable on-off type resistive switching response. (ii) If the nanogap is closed, the cross section of the conduction path varies to give continuous H2-concentration dependent resistive response. The influence of stresses and related physical mechanisms are discussed.
Original languageEnglish
Article number033108
JournalApplied Physics Letters
Issue number3
Publication statusPublished - 20 Jul 2015

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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