Dependence of Convection Flow Rates on Gravity around Growing Hen Egg-White Lysozyme Crystals

• SUZUKI Yoshihisa

  Graduate School of Technology, Industrial and Social Sciences, Tokushima University,

• FUJIWARA Takahisa

  Graduate School of Technology, Industrial and Social Sciences, Tokushima University,

• SHIOMOTO Tomohiro

  Graduate School of Advanced Technology and Science, Tokushima University

• TOYO-OKA Tetsuya

  Graduate School of Advanced Technology and Science, Tokushima University

• NAKAHASHI Daido

  Graduate School of Advanced Technology and Science, Tokushima University

• TSUKAMOTO Katsuo

  Graduate School of Engineering, Osaka University

• INATOMI Yuko

  Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency

Abstract

Convection flows induced by formation of solute depletion zone around growing protein crystals are visualized to confirm whether growth of crystals at a ceiling position (top wall of a growth container) can really suppress this convection flow effectively or not. First, we observed the convection flows around the crystal at the ceiling position at 1.0 G. Second, parabolic flight experiments revealed that flow rates of polystyrene particles (as marker particles, 500 nm in diameter) around a crystal at the ceiling position did not indicate zero at high-gravity conditions, and the particles almost stop at zero gravity. Thus, stable microgravity experiments are still indispensable to attain complete convection-free conditions.

Journal

• International journal of microgravity science and application

  International journal of microgravity science and application 35 (3), 350304-, 2018

  The Japan Society of Microgravity Application

Keywords

• Convection flow
• Flow rates
• Solutal convection
• Ceiling position

Details

• CRID: 1390002184853199744
• NII Article ID: 130007768946
• DOI: 10.15011/jasma.35.3.350304
• ISSN: 21889783
• Text Lang: en
• Data Source:
  • JaLC
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed