Vitaliy A. Guzenko

TL;DR: This work demonstrates the first nanofocusing of hard XFEL pulses, and develops diamond based Fresnel zone plates capable of withstanding the full beam of the world's most powerful x-ray laser.

TL;DR: This work reports on the modeling, fabrication and characterization of zone-doubled Fresnel zone plates for the multi-keV regime (4-12 keV), and demonstrates unprecedented spatial resolution by resolving 15 nm lines and spaces in scanning transmission X-ray microscopy, and focusing diffraction efficiencies of 7.2 keV photon energy.

TL;DR: This study uses silicon nanowires coated with highly pH-sensitive hafnium oxide and aluminum oxide to determine their response to variations in KCl concentration at several constant pH values and observes a nonlinear sensor response as a function of ionic strength, which is independent of the pH value.

TL;DR: In this paper, a double-sided zone plate stacking was proposed to increase the effective line density and thus the resolution of a single-chip optical device with 15 and 7 nm smallest zone widths.

TL;DR: Due to the ability of 100 keV electrons to penetrate deep into resist with little scattering, this work was able to directly write various dense and high aspect ratio nanostructures in 540 nm and 1.1 microm thick layers of poly(methyl methacrylate) (PMMA) resist.