Acousto-electro-optic light modulation

The acousto-electro-optic effect is analyzed and demonstrated experimentally. The application of the acousto-electro-optic effect to light modulation and deflection is discussed

Ring-shaped bifocal lens used for fluorescent self-referenced holographic imaging

We propose an alternative and simple solution to self-referenced digital holographic imaging based on a ring-shaped bifocal lens, without the need of any mirrors, polarizers or spatial light modulators. We discuss the imaging properties of the ring-shaped bifocal lens in self-referenced holography. The easy applicability of this bifocal lens is demonstrated on a realized microscope setup for volumetric observation of freely moving fluorescent objects, based on a conventional light microscope

Structural characterization of a new chalcone compound containing a thiophene moiety: (E)-3-(5-Bromothiophen-2-YL)-1- (2,5-Dichlorothiophen-3-YL)-2-Propen-1-One

The crystal structure of the new chalcone derivative (E)-3-(5-bromothiophen-2-yl)-1-(2,5-dichlorothiophen- 3-yl)-2-propen-1-one is synthesized and structurally characterized by spectroscopic IR, NMR, and HRMS techniques. Its crystal and molecular structure is determined from the single crystal X-ray diffraction study. This compound crystallizes in the monoclinic system and space group P21/n (N 19). The crystal packing is governed by C—H..O non-conventional hydrogen bond-type intermolecular interactions, forming extended zigzag chains related by 21 screw axes running along the [010] direction, with graph-set C(8). These hydrogen bonds contribute to the stabilization of the crystal structure that packs with an efficiency of 71.4%