Halide perovskites show high photoluminescence quantum yields and tunable bandgap. While perovskites’ optical properties significantly degrade due to the ionic electronic defects, a correlation among their structure, size, degradation rate remains concealed. The authors report crystal shape- halide vacancy-dependent stability of methylammonium lead bromide single crystals. vacancies are filled ...

In high-energy collisions of small systems, by high-enough final-state multiplicities, a collective behaviour is present that similar to the flow patterns observed in heavy-ion collisions. Recent studies connect this collectivity semi-soft vacuum-QCD processes. Here we explore QCD production mechanisms using angular correlations heavy flavour simulated proton-proton at s=13 TeV with PYTHIA8 Mon...

The controlled rotation of acoustically levitated samples is beneficial for analyzing sample properties, e.g., in a recently reported room temperature x-ray diffraction experiment, wherein thin film holders comprising disks with short blades attached around their circumference were utilized. However, the mechanism producing torque and determinant factor direction these planar ultrasonic rotors ...

semiconductor nanoparticles exhibit size dependent properties due to quantum confinement effect that arenot present in their bulk counterparts. in this work, extremely fine and pure sno2 nanoparticles of ~1.1nm size were synthesized by a solution process, in which amorphous precipitate of sno2 was crystallizedby microwave heating. the particles sizes varied from ~1.1 to ~2.7 nm. by xrd analysis...