A micro initiator realized by reactive Ni/Al nanolaminates

Xiaotun Qiu, Rui Tang, Ranran Liu, Hai Huang, Shengmin Guo, Hongyu Yu

Research output: Contribution to journalArticlepeer-review

31 Scopus citations


This study described a micro initiator realized by reactive Ni/Al nanolaminates.Aself-propagating reaction can be triggered in the Ni/Al film by applying a DC voltage of 1.5 V. This exothermic reaction can raise the temperature of the film (10 μmin thickness) surface to as high as 622 K. The measured ignition power to start the self-propagating reaction in the film was 3 mWwith an ignition delay of around 0.63 s. The small ignition energy required and the large energy output make the Ni/Al film superior to the current resistive heater based initiators. Numerical simulation results demonstrated that different temperatures can be achieved by simply alternating the film thickness and the localization of high temperature exposure was realized to avoid unintentional fire of adjacent initiators. These findings were confirmed by the experiment using thermal indicators.

Original languageEnglish (US)
Pages (from-to)2140-2144
Number of pages5
JournalJournal of Materials Science: Materials in Electronics
Issue number12
StatePublished - Dec 2012

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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