Special section guest editorial: advances in terahertz biomedical science and applications

The Journal of Biomedical Optics (JBO) has published this special section of papers to capture the most recent advances in THz technology and innovative THz instruments and methods in biology and medicine. A few of the papers in this special section are dedicated to similar biomedical applications of novel optical tools from the neighboring infrared (IR) range. Two papers of the special section consider modern problems of oncodiagnosis. In the research article ‘Development of oral cancer tissue-mimicking phantom based on polyvinyl chloride plastisol and graphite for terahertz frequencies’, authors have introduced a new type of a water-free tissue-mimicking phantom for THz biophotonics. This phantom is based on graphite powders embedded into a polyvinyl chloride plastisol matrix. The effective THz optical properties of such a phantom can be managed in a wide range by changing its composition, thus allowing to mimic the THz optical properties of various biological tissues

Biomedical applications of sapphire shaped crystals

We have proposed novel medical instrument

Sapphire shaped crystals for laser-assisted cryodestruction of biological tissues

We have developed cryo-applicators based on the sapphire shaped crystals fabricated using the edge-defined film-fed growth (EFG) and noncapillary shaping (NCS) techniques. Due to the unique physical properties of sapphire: i.e. high thermal, mechanical, and chemical strength, impressive thermal conductivity and optical transparency, these cryo-applicators yield combination of the tissue cryo-destruction with its exposure to laser radiation for controlling the thermal regimes of cryosurgery, and with the optical diagnosis of tissue freezing. We have applied the proposed sapphire cryo-applicators for the destruction of tissues in vitro. The observed results highlight the prospectives of the sapphire cryo-applicators in cryosurgery

Идентификация человека по голосу для системы дистанционного обучения

This article is about identification of human voice and speech recognition. These developments can be applied in the field of distance education.Представлены различные технологии идентификации человека по голосу и распознания речи. Данные разработки могут быть применены в сфере дистанционного обучения

LAYERED-FIBROUS COMPOSITE BASED ON NIOBIUM REINFORCED BY SAPPHIRE FIBERS

A structure was developed and specimens of composite materials with a niobium.based layered matrix, unidirectionally reinforced with single.crystal sapphire fibers, were obtained by the solid.phase method of diffusion welding. X.ray microanalysis and mechanical tests of the obtained materials were carried out.Разработана структура, и твердофазным методом диффузионной сварки получены образцы композитных материалов со слоистой матрицей на основе ниобия, однонаправленно армированные монокристаллическими волокнами сапфира. Проведены рентгеноструктурный микроанализ и механические испытанияполученных материалов

In vitro terahertz spectroscopy of gelatin-embedded human brain tumors - a pilot study

We have performed the in vitro terahertz (THz) spectroscopy of human brain tumors. In order to x tissue

Hybrid nanoparticles based on sulfides, oxides, and carbides

The methods for synthesis of hybrid nanoparticles based on sulfides, oxides, and carbides of heavy and transition metals were considered. The problem of the influence of the method of synthesis of the hybrid nanoparticles on their atomic structure, morphology of the nanomaterials, and functional properties was analyzed. The areas of practical use of the hybrid nanoparticles were proposed. © 2013 Springer Science+Business Media New York