A dispersively compensated scheme for sum-frequency mixing of broadband ultrashort laser pulses is reported. An increase of the bandwidth of the sum-frequency mixing process by 12 times compared with the noncompensated bandwidth of the given crystal has been demonstrated. Mixing radiation at 266 and 707 nm in a 1-mm-thick beta-barium metaborate crystal by using the compensated scheme results in...

Dual-function hydrogels, possessing both stimuli-responsive and self-healing properties, have recently attracted attention of both chemists and materials scientists. Here we report a new paradigm using natural polymer (guar gum, GG) and sodium borohydride (NaBH4), for the preparation of silver nanoparticles (AgNPs)-containing smart hydrogels in a simple, fast and economical way. NaBH4 performs ...

We report results of polarized Raman spectroscopy of piezoelectric copper metaborate CuB2O4 (space group I ̄42d, Z = 12) in the range from 80 to 1300 cm−1. Due to the dense population of the phonon spectra we carried out angular-dependent measurements by rotating the sample in different crystallographic planes thus performing gradual transitions from one polarization configuration to another. T...

The formation of a borate-bridged dimeric aluminum Schiff-base compound [salen(Bu)Al]2O2BOMe [salen=N,N’-ethylenebis(salicylidenimine) (1) has been reported. Complex 1 crystallizes in a triclinic P space group with a=14.57, b=15.15, c=15.84 Å and a=96.92, b=90.82, g=105.538. The crystal structure shows the presence of a metaborate (MeOBO2 2– ) bridge between two five-coordinate aluminum atoms w...

Abstract The praseodymium metaborate molybdate(VI) PrBO 2 MoO 4 was synthesized by solid-state reaction methods at 850 °C under an argon atmosphere and identified its powder X-ray diffraction pattern. polycrystalline sample placed in a Walker-type multianvil press, where pressure-induced crystal growth 1 GPa successful, yielding single crystals suitable for structure determination. crystallizes...