При изучении агрегации углеродных нанотрубок в условиях гидродинамической неустойчивости высыхающей капли на гидрофобных и гидрофильных подложках выявлена определяющая роль гидродинамических течений. Установлено, что протекание энтропийной агрегации нанотрубок в капле под действием аэросила зависит от типа подложки.   Работа выполнена при финансовой поддержке РФФИ (проект № 16-43-360281 р_а).

Изучены электрохимические свойства гибких печатных электродов, модифицированных гибридным материалом трипсин – углеродные нанотрубки. Обнаружена зависимость вольтамперных характеристик электродов от присутствия казеина. Полученные структуры могут быть использованы в качестве биосенсора для применения в пищевой промышленности.   Авторы выражают благодарность Холявке Марине Геннадьевне и Королевой Виктории Александровне за помощь в проведении экспериментов. Выражаем благодарность Центру коллективного пользования научным оборудованием Воронежского государственного университета за активную поддержку

В стандартных условиях проведен модельный эксперимент по влиянию сил обеднения на процесс высыхания капли взвесей невзаимодействующих частиц аэросил – полистирольный латекс. Впервые обнаружен быстропротекающий процесс фазового превращения аэросила в кристаллический SiO2 в течение десятков секунд, сопровождающийся резким изменением цвета раствора от светло-голубого до синего. Обнаружена дифракционная картина, свидетельствующая о нанокристаллической природе зародышеобразования новой фазы. Фазообразование интерпретировано как результат действия неравновесной силы обеднения в условиях гидродинамической неустойчивости высыхающей капли.     REFERENCES Tret’yakov Yu. D. Self-organisation processes in the chemistry of materials. Uspekhi khimii [Russian Chemical Reviews], 2003, v. 72(8), pp. 651–679. https://doi.org/10.1070/RC2003v072n08ABEH000836 Kushnir S. E., Kazin P. E., Trusov L. A., Tret’yakov Yu. D. Self-organization of micro- and nanoparticles in ferrofl uids. 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Аннотация. Изучены особенности взаимодействия слоистых прекурсоров с микроплазмой искрового разряда. Рассмотрены механизмы формирования самоорганизованных микрочастиц и влияние природы исходных материалов на форму частиц.Ключевые слова: микроплазма, микрочастицы, слоистые прекурсоры, искровой разряд, самоорганизация.Abstract. We studied the action of the pulsed micro plasma on the layered materials with the different interlayer bond energy. The pulsed micro plasma was generated by the spark discharges between the two pieces of studied material in dry air at normal conditions in an open reactor. The 20kV spark discharges were generated with induction coil and had the duration from 10 to 20 us, controlled with an oscilloscope with a capacitive sensor. The generated particles were accumulated on the duct tape underneath the electrodes. Three types of particles were observed -droplets, fractals and planar structures. Droplets were produced by surface melting of the electrode material with the subsequent separation of a drop. The drops had different forms depending on the material. Sb produced spheres, Bi formed spheres covered symmetrically with round tips, InSb produced twisted structures. The planar structures were produced by the fi eld exfoliation of the electrode material. Fractals were produced on the electrodes because of the circular evaporation and condensation of the material in pulsed plasma. The ratio of these three effects was determined by the degree of anisotropy of the processed material and by its melting point. Antimony produced many droplets, fractals and layers, because of its low melting point and high anisotropy. Bi produced droplets, fractals and a little amount of exfoliated layers because of its low anisotropy. SiC did not melt or evaporate at the temperature of the discharge but exfoliated, so it produced planar structures. The results may be used in the production of micro and nano particles needed to create hybrid materials.