Production of hollow germanium alloy quasi-spheres through a coaxial nozzle

Kunal D. Bhagat, Truong V. Vu, John C. Wells, Hideyuki Takakura, Yu Kawano, Fumio Ogawa

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


Hollow germanium alloy quasi-spheres of diameters 1-2 mm have been produced based on hollow jet instability. The germanium was first melted at around 1273 K and then extruded from a coaxial nozzle into an inert atmosphere by argon supplied to the inner nozzle. The falling spheres were cooled by water spray and collected in a bucket. The spheres had relatively smooth inner and outer surfaces, but were somewhat aspherical. The ex-post characterization of germanium sphere revealed Ge, Fe, Cr and Ni at atomic percentages of 64.04%, 16.21%, 8.55% and 10.30% respectively.

Original languageEnglish
Article number068001
JournalJapanese journal of applied physics
Issue number6
Publication statusPublished - 2019
Externally publishedYes

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)


Dive into the research topics of 'Production of hollow germanium alloy quasi-spheres through a coaxial nozzle'. Together they form a unique fingerprint.

Cite this