Characterization of Al/CuO nanoenergetic multilayer films integrated with semiconductor bridge for initiator applications

Zhu, Peng; Shen, Ruiqi; Ye, Yinghua; Fu, Shuai; Li, Dongle

doi:10.1063/1.4804315

Cited by 51 publications

(29 citation statements)

References 20 publications

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“…In particular, DC magnetron-sputtering has developed rapidly over the last decade to become a standard manufacturing process for Al/CuO nanothermites; its relatively low cost and easy application to the fabrication of large-area films make it possible to envision the transfer into industrial products. This specific Al/CuO system is widely used for in micro initiation or exploding foil initiators [8][9][10][11] because of its high volumetric energy density (> 13 kJ/cm 3 ) and its propensity to produce hot gas.…”

Section: Introductionmentioning

confidence: 99%

Self-propagating combustion of sputter-deposited Al/CuO nanolaminates

Zapata

Nicollet

Julien

et al. 2019

Combustion and Flame

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The complex Al/CuO self-propagating reaction involving multi-phase and multi-species dynamics was studied in order to investigate the very high flame temperature around the vaporization temperature of alumina, even under a neutral environment. Experiments were performed on different sputter-deposited Al/CuO multilayers coupling optical spectroscopy with high speed camera measurements. The clear presence of both AlO and Al signatures in gas phase suggests that the redox reaction starts in the bulk nanolaminate, which then rapidly tear off the substrate to continue burning in a heterogeneous (condensed and gas) phase in the environment. The flame temperature increases with the stoichiometry but is independent of the bilayer thickness. In addition to the confirmation of the effects of stoichiometry and the bilayer thickness on the characteristics of the self-propagating reaction, the predominant role of

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Section: Introductionmentioning

confidence: 99%

Self-propagating combustion of sputter-deposited Al/CuO nanolaminates

Zapata

Nicollet

Julien

et al. 2019

Combustion and Flame

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“…Rapidly, thermite multilayers [9][10][11][12][13], composed of alterning metal and metal-oxide reactants, have emerged as interesting fully dense energetic thin film. They are capable to promptly release high amount of heat with emission of light, thus opening opportunities for tunable on-chip ignition [14,15] and actuation [16]. Themite multilayers feature self-sustained propagating reaction after being ignited locally by an external source of heat.…”

Section: Introductionmentioning

confidence: 99%

Engineering of Al/CuO Reactive Multilayer Thin Films for Tunable Initiation and Actuation

Rossi

2018

Propellants Explo Pyrotec

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Sputter‐deposited Al/CuO multilayers represent the state‐of‐the‐art of energetic nanomaterials for tunable ignition and actuation because their theoretical energy densities are significantly higher than most conventional secondary explosives while being less sensitive to undesired initiation. Both the sensitivity and combustion properties (temperature, combustion velocity and products of reaction) can be manipulated via the layering, reactant spacing and stoichiometry of the multilayer and, to a lesser extent, via interface engineering. In this article, we first describe the technology of deposition of Al/CuO multilayers focusing on direct current sputter deposition followed by a comprehensive review of the materials structural characteristics. Next, experimental and theoretical works performed on these reactive multilayered materials to date is presented in terms of methods used, the results acquired on ignition and combustion properties, and conclusions drawn. Emphasis is placed on several studies elucidating the fundamental processes that underlie propagating combustion reactions. This paper provides a good support for engineers to safely propose Al/CuO multilayers structure to regulate the energy release rates and ignition threshold in order to manufacture high performance and tunable initiator devices.

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“…The SCB bridge has two V-type angles (90°) and the size is 380 μm (width) × 80 μm (length) × 2.5 μm (thickness). The SCB-Al/MoO3 chip was fabricated on a silicon wafer using a combination of photolithography, sputtering deposition, and lift-off techniques [19,20].…”

Section: Design and Preparation Of Scb-al/moo3mentioning

confidence: 99%

Firing and Initiation Characteristics of Energetic Semiconductor Bridge Integrated with Varied Thickness of Al/MoO3 Nanofilms

Zhu

Guan

et al. 2018

Self Cite

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Two types of energetic semiconductor bridges (ESCBs), with 3μm and 6μm Al/MoO3 energetic multilayer nanofilms integrated respectively, were prepared with microfabrication technique. The influence of Al/MoO3 nanofilms thickness on the firing and initiation characteristics of ESCBs was investigated. Results show that critical firing time and critical firing energy of ESCBs do not change significantly. The flame size of SCB-Al/MoO3(6μm) is twice than that of SCB-Al/MoO3(3μm) at 100μs. Furthermore, the firing duration of SCB-Al/MoO3(6μm) is 540μs, much higher than SCB-Al/MoO3(3μm) 300μs, which is very useful for the initiation of energetic materials. However, the contact and noncontact initiation of ESCBs on HMX-Al/MoO3 composite explosives show that the film thickness of Al/MoO3 has the remarkable influence on the initiation ability of ESCBs. The results from experiments deepen the understanding of the influence of thickness of Al/MoO3 nanofilms on the firing performance of SCB, which is very meaningful for the initiation of energetic materials.

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Characterization of Al/CuO nanoenergetic multilayer films integrated with semiconductor bridge for initiator applications

Cited by 51 publications

References 20 publications

Self-propagating combustion of sputter-deposited Al/CuO nanolaminates

Self-propagating combustion of sputter-deposited Al/CuO nanolaminates

Engineering of Al/CuO Reactive Multilayer Thin Films for Tunable Initiation and Actuation

Firing and Initiation Characteristics of Energetic Semiconductor Bridge Integrated with Varied Thickness of Al/MoO3 Nanofilms

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