Main scientific results by INP BSU staff in 2016 in the area of fundamental scientific research
A new type of meta-atoms – hollow carbon microspheres – was developed, described in theory and implemented in experiment. 2D-structures (meta-surfaces) were manufactured based on these meta-atoms. Precise control of the geometry and dielectric properties of carbon skeleton facilitates emergence of meta-atoms with a given electromagnetic response, and the design of certain spatial distribution of elements in 2D-structure leads to creation of meta-surfaces, which are characterized by near-ideal absorption of electromagnetic radiation, or surfaces with tunable gradient of refractive index in frequency range from GHz to THz.
The temperature dependence of infrared absorption spectra by thin films made of single-walled carbon nanotubes was experimentally shown and explained in theory by temperature dependence of conductivity of doped semiconductor nanotubes. A method of distinguishing of contributions from intrazone and interzone electron transition to infrared absorption spectrum was proposed. This method is based on measurements of absorption spectra at various temperatures or various doping degrees of single-walled nanotubes.
A method of measurement of previously unavailable to measure magnetic moments of short-lived charmed and strange hyperons was proposed. The method uses the effect of spin rotation of such particles in bended crystals at energies of Large hadron collider (LHC) and proposed circular collider (FCC).
An effect of oscillations in angular distributions of positively and negatively charged particles with high energy was predicted for transition through bended crystals. Based on numerical simulation optimal conditions for observation of predicted effect were determined and experiments were proposed.
Calibration of energy of hadron jets was found, the cross-sections for jet formation were measured and maximum possible parameters of deviations from Standard model were determined in events with gwo jets in final state of proton-proton collisions in ATLAS experiment at energy 8 and 13 TeV.
Principal suitability of transient processes to be used as the moment of time when high energy particles start to interact with inorganic crystal detector material was found.