Electrostriction of lipid bilayers on a solid support and peculiarity of membranes from Archaeal lipids
| Autor: | L. Sokolikova, B. Sivak, M. Rehák, Maja Šnejdárková, Tibor Hianik, V.I. Passechnik, Sergey A. Ivanov |
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| Rok vydání: | 1996 |
| Předmět: |
Membrane potential
congenital hereditary and neonatal diseases and abnormalities Electrostriction urogenital system Chemistry Metals and Alloys Analytical chemistry nutritional and metabolic diseases Surfaces and Interfaces Lipid bilayer mechanics Surfaces Coatings and Films Electronic Optical and Magnetic Materials Crystallography chemistry.chemical_compound Membrane Phosphatidylcholine Materials Chemistry Breakdown voltage Lipid bilayer phase behavior Lipid bilayer |
| Zdroj: | Thin Solid Films. :817-821 |
| ISSN: | 0040-6090 |
| DOI: | 10.1016/s0040-6090(95)08454-1 |
| Popis: | Using the electrostriction method we studied the elasticity modulus perpendicular to the membrane plane, E ⊥ , electrical capacitance, C , breakdown voltage, U b and membrane potential, U m , of conventional BLM and bilayer lipid membranes formed on the freshly cut tip of teflon-coated stainless steel wire (s-BLM) from Archaeal lipids and/or from egg phosphatidylcholine (egg PC) as a function of d.c. voltage applied to the membrane. The values of E ⊥ for BLM and s-BLM of Archaeal lipids were approx. 1.4 times higher in comparison with bilayers from egg PC. The values of U b of BLM from Archaeal lipids were 2.3 times higher than for egg PC membranes and reached ≈290 mV. S-BLM from both lipid composition were considerably more stable than BLM and their breakdown voltage surpassed 1 V. The values of E ⊥ and U m of s-BLM changed nonmonotonously with increasing d.c. voltage. |
| Databáze: | OpenAIRE |
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