Measurement of curvature-elastic modulus of soya lecithin vesicles

Authors

Bhazel Anne H. Rara ⋅ PH National Institute of Physics, University of the Philippines Diliman
Claire M. Macale ⋅ PH National Institute of Physics, University of the Philippines Diliman
Zenaida B. Domingo ⋅ PH National Institute of Physics, University of the Philippines Diliman

Abstract

A pre-extracted, dried lecithin was made in contact with water, then later viewed under a transmission electron microscope. Computation of the curvature-elastic modulus involved curvature energy equations for vesicles, as well as the Boltzmann energy equation. Results had shown that κ = 7.78 x 10^-20 J (or 7.78x10^-13 ergs), which is close to the curvature-elastic modulus of egg lecithin. This shows that the intermolecular interaction between soya lecithin in water has an energy of 7.78x10^-13 ergs, which is of the order 10k_BT, indicating that the vesicle is rigid.

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Issue

2001: Proceedings of the 19th Samahang Pisika ng Pilipinas Philippine Physics Congress

Article ID

SPP-2001-W3B-3

Section

Liquid Crystals

Published

2001-10-24

How to Cite

[1]

BAH Rara, CM Macale, and ZB Domingo, Measurement of curvature-elastic modulus of soya lecithin vesicles, Proceedings of the Samahang Pisika ng Pilipinas 19, SPP-2001-W3B-3 (2001). URL: https://proceedings.spp-online.org/article/view/SPP-2001-W3B-3.