Application of ionic liquids in scanning electron microscopy studies of dielectric microstructure
A.I. Ivanova, A.V. Dudilovskaya, O.E. Zhuravlev, A.D. Kaphtanov
Tver State University
DOI: 10.26456/pcascnn/2024.16.154
Original article
Abstract: This article presents the results of studying non-conducting biological, crystalline objects, powders, and glass composite samples using an ionic liquid by scanning electron microscopy. Ionic liquids based on alkylpyridinium dicyanamides studied in the work were obtained by a metathesis reaction. A solution of ionic liquid in acetone was used as a conductive coating for dielectrics. It was found that the use of ionic liquid is an alternative to the methods of metal and carbon sputtering on dielectric samples. Scanning electron microscopy images of samples obtained by such microscopy methods as low vacuum mode, the use of metal sputtering (Pt) on samples, and a study of samples without a conductive coating are presented. A comparative analysis of the results obtained by traditional methods and the method of applying ionic liquid to samples is carried out. It is shown that the use of electrically conductive ionic liquids with the thermal and chemical stability makes it possible to obtain high-resolution electron microscopic images and also allows visualization of the topographic and compositional contrast of the studied dielectric samples.
Keywords: ionic liquid, sample preparation, dielectric samples, surface microstructure, scanning electron microscopy
- Alexandra I. Ivanova – Ph. D., Docent, Applied Physic Department, Tver State University
- Aleksandra V. Dudilovskaya – 4th year student, Physical-Technical Faculty, Tver State University
- Oleg E. Zhuravlev – Ph. D., Docent Organic Chemistry Department, Tver State University
- Arseniy D. Kaphtanov – 4th year postgraduate student, Chemical-Technological Faculty, Tver State University
Reference:
Ivanova, A.I. Application of ionic liquids in scanning electron microscopy studies of dielectric microstructure / A.I. Ivanova, A.V. Dudilovskaya, O.E. Zhuravlev, A.D. Kaphtanov // Physical and chemical aspects of the study of clusters, nanostructures and nanomaterials. — 2024. — I. 16. — P. 154-163. DOI: 10.26456/pcascnn/2024.16.154. (In Russian).
Full article (in Russian): download PDF file
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