Freely suspended layer-by-layer nanomembranes: Testing micromechanical properties

Sergiy Markutsya, Chaoyang Jiang, Yuri Pikus, Vladimir V. Tsukruk

Research output: Contribution to journalArticlepeer-review

172 Scopus citations

Abstract

Freely suspended nanocomposite layer-by-layer (LbL) nanomembranes composed of a central layer of gold nanoparticles sand-wiched between polyelectrolyte multilayers are fabricated via spin-assisted LbL assembly. The diamefer of the circular membranes is varied from 150 to 600 μm and the thickness is kept within the range of 25-70 nm. The micro- and nanomechanical properties of these membranes are studied using a combination of resonance-frequency and bulging tests, and point-load nanodeflection experiments. Our results suggest that these freely suspended nanomembranes, with a Young's modulus of 5-10 GPa are very robust and can sustain multiple significant deformations. They are very sensitive to minor variations in pressure, surpassing ordinary semiconductor and metal membranes by three to four orders of magnitude and therefore have potential applications as pressure and acoustic microsensors.

Original languageEnglish
Pages (from-to)771-780
Number of pages10
JournalAdvanced Functional Materials
Volume15
Issue number5
DOIs
StatePublished - May 2005

ASJC Scopus subject areas

  • Chemistry (all)
  • Materials Science (all)
  • Condensed Matter Physics

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