Measurement of the surface tension of molten silicon by the use of ripplon

Nobuya Kawasaki, Kotaro Watanabe, Yuji Nagasaka

Research output: Contribution to journalArticle

16 Citations (Scopus)


A surface laser-light scattering apparatus to measure the surface tension and kinematic viscosity of high-temperature melts simultaneously has been developed. In this method, the surface properties can be obtained by the laser heterodyne detection of light scattered from thermally excited capillary waves ('ripplon'), which are typically of small amplitude (∼1 nm) and with a characteristic wavelength (∼100 μm). The surface tension of molten silicon in the temperature range from 1685 to 1770 K has been measured. The oxygen concentration in the sample after the experiment was analysed.

Original languageEnglish
Pages (from-to)91-96
Number of pages6
JournalHigh Temperatures - High Pressures
Issue number1
Publication statusPublished - 1998


ASJC Scopus subject areas

  • Materials Science (miscellaneous)
  • Mechanics of Materials
  • Computational Mechanics
  • Physical and Theoretical Chemistry
  • Fluid Flow and Transfer Processes

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