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Related Experiment Video

Updated: Jun 13, 2026

Atomic Force Microscopy Imaging and Force Spectroscopy of Supported Lipid Bilayers
10:15

Atomic Force Microscopy Imaging and Force Spectroscopy of Supported Lipid Bilayers

Published on: July 22, 2015

Solid supported multicomponent lipid membranes studied by x-ray spectromicroscopy.

Eva Nováková1, Genoveva Mitrea, Christian Peth

  • 1Institut fur Rontgenphysik, Universitat Gottingen, Friedrich-Hund-Platz 1, 37077 Gottingen, Germany.

Biointerphases
|April 23, 2010
PubMed
Summary
This summary is machine-generated.

Scanning transmission soft X-ray spectromicroscopy can image lipid membranes with colloidal particles under physiological conditions. This technique shows promise for studying membrane-colloid interactions and lipid segregation.

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Preparation of Mica Supported Lipid Bilayers for High Resolution Optical Microscopy Imaging
07:48

Preparation of Mica Supported Lipid Bilayers for High Resolution Optical Microscopy Imaging

Published on: June 7, 2014

Area of Science:

  • Soft X-ray Spectromicroscopy
  • Lipid Membrane Biophysics
  • Colloid Science

Background:

  • Understanding the lateral organization of lipid membranes on solid supports is crucial for various applications.
  • Investigating membrane-colloid interactions requires techniques capable of high resolution under biologically relevant conditions.
  • Current limitations exist in analyzing samples with excess water using advanced imaging methods.

Purpose of the Study:

  • To evaluate the capability and limitations of scanning transmission soft X-ray spectromicroscopy (STXM) for analyzing lipid membranes with colloidal particles.
  • To test the feasibility of using STXM under physiologically relevant conditions with excess water.
  • To demonstrate the identification of model lipids using X-ray absorption spectroscopy.

Main Methods:

  • Synchrotron-based scanning transmission soft X-ray spectromicroscopy (STXM) was employed.
  • Model lipid systems with charged monolayer-coated microspheres on a solid support were investigated.
  • Near-edge X-ray absorption fine structure (NEXAFS) spectra at the carbon K edge were analyzed.
  • High lateral resolution imaging (approx. 60 nm) was achieved.

Main Results:

  • Model lipids were reproducibly identified using their carbon K-edge NEXAFS spectra.
  • STXM demonstrated sensitivity to thin lipid layers under physiological conditions (excess water).
  • The study confirmed the potential for future investigations of membrane-colloid interactions.

Conclusions:

  • STXM is a viable technique for probing lipid membranes on solid supports, even in aqueous environments.
  • The method allows for the identification of different lipid components.
  • Future applications include studying membrane-colloid interactions and lipid lateral segregation with high resolution.