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Search Publications by Andrei Kolmakov

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Displaying 26 - 33 of 33

Versatile fluidic cell for in-situ electrochemical measurements in SEM

July 25, 2016
Jeyavel Velmurugan, Ana Stevanovic, Feng Yi, David A. LaVan, Andrei A. Kolmakov
Electrochemical techniques such as like electrodeposition are crucially important for fabrication of nanostructured materials. The details of cluster nucleation and growth at early stages of electrodeposition are extremely important for morphology and

Local coexistence of VO2 phases revealed by deep data analysis

July 7, 2016
Evgheni Strelcov, Anton Ievlev, Alex Belianinov, Alexander Tselev, Andrei A. Kolmakov, Sergei Kalinin
We report a synergistic approach of micro-Raman spectroscopic mapping and deep data analysis to study the distribution of crystallographic phases and ferroelastic domains in a defected Al-doped VO2 microcrystal. Bayesian linear unmixing revealed an uneven

Recent approaches for bridging the pressure gap in photoelectron microspectroscopy

January 29, 2016
Andrei A. Kolmakov, Luca Gregoratti, Maya Kiskinova, Sebastian Gunther
Ambient pressure photoelectron spectroscopy (APPES) and microscopy are at the frontier of modern chemical analysis at liquid-gas, solid-liquid and solid-gas interfaces, bridging science and engineering of functional materials. Complementing the current

In situ SEM Study of Lithium Intercalation in individual V2O5 Nanowires

February 5, 2015
Evgheni Strelcov, Joshua Cothren, Donovan Leonard, Albina Y. Borisevich, Andrei A. Kolmakov
Progress in rational engineering of Li-ion batteries requires better understanding of the electrochemical processes and accompanying transformations in the electrode materials on multiple length scales. In spite of recent progress in transmission electron

Photoelectron spectroscopy of wet and gaseous samples through electron transparent graphene membranes

September 22, 2014
Jurgen Kraus, Robert Reichelt, Sebastian Gunther, Luca Gregoratti, Matteo Amati, Maya Kiskinova, Alexander Yulaev, Ivan Vlassiouk, Andrei A. Kolmakov
Photoelectron spectroscopy (PES) and microscopy are highly demanded for exploring morphologically complex solid-gas and solid-liquid interfaces under realistic conditions but the very small electron mean free path inside the dense media imposes serious