Stimuli-responsive and on-chip nanomembrane micro-rolls for enhanced macroscopic visual hydrogen detection

Borui Xu, Ziao Tian, Jiao Wang, Heetak Han, Taeyoon Lee, Yongfeng Mei

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Nanomembrane rolling offers advanced three-dimensional (3D) mesostructures in electronics, optics, and biomedical applications. We demonstrate a high-density and on-chip array of rolled-up nanomembrane actuators with stimuli-responsive function based on the volume expansion of palladium in hydrogen milieu. The uniform stimuli-responsive behavior of high-density nanomembrane rolls leads to huge macroscopic visual detection with more than 50% transmittance change under optimization of micropattern design. The reversible shape changing between rolled and flat (unrolled) statuses can be well explained on the basis of the elastic mechanical model. The strain change in the palladium layer during hydrogen absorption and desorption produces a marked change in the diameter of nanomembrane rolls. We found that a functional palladium layer established an external compressive strain after hydrogen stimuli and thus also reduced the rolls’ diameters. The large area of the nanomembrane roll array performs excellent nonelectrical hydrogen detection, with response and recovery speeds within seconds. Our work suggests a new strategy to integrate high-density 3D mesoscale architectures into functional devices and systems.

Original languageEnglish
Article numbereaap8203
JournalScience Advances
Volume4
Issue number4
DOIs
Publication statusPublished - 2018 Apr 6

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stimuli
chips
palladium
hydrogen
transmittance
actuators
desorption
recovery
optics
optimization
expansion
electronics

All Science Journal Classification (ASJC) codes

  • General

Cite this

Xu, Borui ; Tian, Ziao ; Wang, Jiao ; Han, Heetak ; Lee, Taeyoon ; Mei, Yongfeng. / Stimuli-responsive and on-chip nanomembrane micro-rolls for enhanced macroscopic visual hydrogen detection. In: Science Advances. 2018 ; Vol. 4, No. 4.
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Stimuli-responsive and on-chip nanomembrane micro-rolls for enhanced macroscopic visual hydrogen detection. / Xu, Borui; Tian, Ziao; Wang, Jiao; Han, Heetak; Lee, Taeyoon; Mei, Yongfeng.

In: Science Advances, Vol. 4, No. 4, eaap8203, 06.04.2018.

Research output: Contribution to journalArticle

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