Ferroelectric phase transitions in materials embedded in porous media

The preliminary dielectric and neutron scattering results obtained on two granular ferroelectrics (with particles diameters ∼ 7 nm) - sodium nitrite and Rochelle salt embedded into microporous glass matrix are presented.     

X-Ray Mn K line shifts in manganese oxide nanoparticles

Results of determination of the X-Ray Mn K line shifts in nanoparticles of manganese oxides (MnO, Mn₃O₄, and MnO₂) relative to the corresponding lines in bulk compounds are presented. Nanoparticles of manganese oxides were formed by direct synthesis in pores of borosilicate glasses with average pore diameter of 7(1) nm.     

Nanocapsule for Safe and Effective Methane Storage

A nanocapsule for safe and effective methane storage is investigated by the method of molecular dynamics. The mass content of methane in the nanocapsule reaches the value of 14.5 mass%. The nanocapsule consists of two parts: a locking chamber and a storage area. The locking chamber is the nanotube (10.10), open at one end, with a K@C₆₀ ¹⁺ endohedral complex inside it. The storage area is a nanotube (20.20). The locking chamber and the storage area are joined with each other and form T-junction. The locking chamber is opened at the methane filling and the discharge stages, and it is closed at the storage stage. Thanks to the locking chamber, methane molecules are stored in the nanocapsules under normal external conditions. Opening and closing of the locking chamber are carried out by the K@C₆₀ ¹⁺ endohedral complex displacement, which is done by the electric field action. The specific structure of the nanocapsule allows two aims to be reached: a high methane mass content and significant level of safety.