Intrinsic growth of layered structure GaS microtubes from banana-leaf like structures

Research output: Contribution to journalArticleScientificpeer-review

Researchers

  • Anuja Datta
  • Godhuli Sinha
  • Subhendu K. Panda

Research units

  • University of South Florida
  • CSIR Indian Institute of Chemical Technology

Abstract

We report the growth of highly crystalline GaS tubular structures directly on Ga metal from banana-leaf like structures via a facile catalyst free physical vapor deposition process. GaS microtube arrays with 1.5-2 μm length were synthesized by promoting the intrinsic layered crystal structure of GaS during thermal evaporation where the thermal stress and interlayer interactions are mostly dominant. We monitored the growth process systematically to build a proper understanding of the formed tubular structures in this layered material. Microstructural analyses indicate that the GaS microtubes start with the formation of ultra-long, uniform banana-leaf like morphology that eventually splits into thinner flakes and starts rolling in nanometer size diameters. Final realization of GaS microtubes happened by the expansion of these intermediate rolled-up layers in their outer diameter by minimizing the strain energy in the system in a self-catalytic growth process.

Details

Original languageEnglish
Pages (from-to)87-91
Number of pages5
JournalJournal of Crystal Growth
Volume368
Publication statusPublished - 2013
MoE publication typeA1 Journal article-refereed

    Research areas

  • A1. Crystal morphology, A1. Low dimensional structures, A1. Morphological stability, A2. Physical vapor deposition processes, B1. Sulfides, B2. Semiconducting gallium compounds

ID: 13354575