A paper from LNBE accepted by the Technical Physics Letters

The Pisma v ZhTF (Technical Physics Letters) has accepted a paper describing the results of study performed by Konstantin Mochalov, Vladimir Oleinikov, and Igor Nabiev of LNBE in collaboration with their colleagues from Lomonosov Moscow State University and Shumakov Federal Research Center of Transplantology and Artificial Organs. The Technical Physics Letters is a Russian journal specializing in rapid publication of short communications on the latest advances in the areas of physics with promising implications for technology.

The paper reports on an experimental approach to nanoscale multiparameter 3D characterization of a wide range of composite nanomaterials developed by the authors. The approach allows the optical properties, 3D morphology, and distribution of mechanical and electrical characteristics to be simultaneously analyzed in a single region of a sample as large as 100×100 μm on the surface and 3 mm in depth. The integrated method combines confocal and near-field optical microspectroscopies at a lateral resolution down to 50 nm (fluorescence and Raman scattering) with scanning probe microscopy. Sequential analysis of the layers of a nanomaterial at a step of 20 nm and z Z-scanning depth up to 3 mm enables the reconstruction of the spatial distribution of the optical, morphological, electrical, and mechanical characteristics of the sample with a nanometer resolution. The method is suitable for estimating the correlations between the optical and morphological parameters of a "smart" liquid crystal polymer doped with fluorescent semiconductor quantum dots. The authors have demonstrated effective modulation of the spatial distribution of quantum dots in the polymer matrix determined by the period of the Bragg grating that the matrix forms.

Contact:

Konstantin E. Mochalov, Ph.D., senior research assistant (mochalov@mail.ru)

Laboratory of Nano-Bioengineering, Moscow Engineering Physics Institute
31 Kashirskoe shosse, 115409 Moscow, Russian Federation

http://www.lnbe.mephi.ru/en

 
 
 
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