Reviews of topical problems

S.I. Sadovnikov “Semiconductor nanocrystalline sulfides” Phys. Usp. 68 211–231 (2025)

R.A. Shishkin “State-of-the-art and prospective materials for thermal barrier coatings” Phys. Usp. 68 232–245 (2025)

N.V. Sidorov, N.A. Teplyakova, M.N. Palatnikov “Manifestation of defects and imperfections of lithium niobate crystals in Raman spectra” Phys. Usp. 68 246–260 (2025)

Physics of our days

V.V. Aristov, S.A. Zabelok, A.A. Frolova “Nonclassical transport in nonequilibrium rarefied gas flows” Phys. Usp. 68 261–277 (2025)

Reviews of topical problems

M.S. Kirsanova, P.V. Baklanov, E.O. Vasiliev, A.I. Vasyunin, D.Z. Wiebe, S.A. Drozdov, T.I. Larchenkova, S.F. Likhachev, A.V. Moiseev, Ya.N. Pavlyuchenkov, P.S. Sozinova, A.P. Topchieva, I.V. Tret’yakov, G.S. Fedoseev, A.V. Khudchenko, N.N. Shakhvorostova “Origin and transport of water in the Universe” Phys. Usp. 68 278–293 (2025)

Instruments and methods of investigation

A.K. Kaveev, G.I. Kropotov “Terahertz polarization converters: physical principles, design, and applications” Phys. Usp. 68 294–314 (2025)

Physics news on the internet

Yu.N. Eroshenko “Physics news on the Internet: March 2025” Phys. Usp. 68 315–316 (2025)