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[en] A significant laser-induced piezooptical response in novel CdCl0.5J 0.5 nanolayers is obtained under the influence of laser illumination. The maximal piezo-optic response is observed for off-diagonal piezooptical tensor components. The layered structure allowed to obtain the thin specimens of thickness up to 1 nm with mirror-like surfaces. The observed studies show huge dependence of the piezooptics on the nanolayer thickness and the photoinduced beam power density. The effect is completely reversible. This fact allows proposing a new type of nanomaterials, which have significant benefits with respect to the other types of piezooptical materials (i.e. a possibility to use them in the laser operated devices). (paper)
[en] In the book of abstracts there are the theses of the IX Annual conference of Nanotechnological Society of Russia which took place on the 05.04.2018 in Moscow. The consideration is given to the nanostructured metals and alloys and coatings on their base, nanocomposite polymers. The questions of nanotechnologies use in microelectronics, instrument engineering, fuel-and-energy complex as well as in biotechnology are also discussed
[ru]В сборнике представлены тезисы IX ежегодной конференции Нанотехнологического общества России, проходившей 05.04.2018 в Москве. Рассмотрены наноструктурированные металлы и сплавы и покрытия на их основе, нанокомпозитные полимеры. Обсуждаются вопросы использования нанотехнологий в микроэлектронике, приборостроении, топливно-энергетическом комплексе, а также в биотехнологии
[en] This paper reports on conceptual and experimental work towards the realization of plasmonic surface traps for cold atoms. The trapping mechanism is based on the combination of a repulsive and an attractive potential generated by evanescent light waves that are plasmonically enhanced. The strength of enhancement can be locally manipulated via the thickness of a metal nanolayer deposited on top of a dielectric substrate. Thus, in principle the trapping geometry can be predefined by the metal layer design. We present simulations of a plasmonic lattice potential using a gold grating with sinusoidally modulated thickness. Experimentally, a first plasmonic test structure is presented and characterized. Furthermore, the surface potential landscape is detected by reflecting ultracold atom clouds from the test structure revealing the influence of both evanescent waves. A parameter range is identified where stable traps can be expected. (paper)
[en] The functionalization of fine primary particles by atomic layer deposition (particle ALD) provides for nearly perfect nanothick films to be deposited conformally on both external and internal particle surfaces, including nanoparticle surfaces. Film thickness is easily controlled from several angstroms to nanometers by the number of self-limiting surface reactions that are carried out sequentially. Films can be continuous or semi-continuous. This review starts with a short early history of particle ALD. The discussion includes agitated reactor processing, both atomic and molecular layer deposition (MLD), coating of both inorganic and polymer particles, nanoparticles, and nanotubes. A number of applications are presented, and a path forward, including likely near-term commercial products, is given.
[en] A superconducting planar concentrator of magnetic field is considered, which shaped as a circular ring with a narrowed active strip overlapping with a magnetically sensitive thin-film element possessing giant magnetoresistance. It is shown that fragmentation of the active strip by separating it into parallel superconducting nanodimensional branches and slits increase the magnetic field multiplication factor, i.e., leads to a several-fold increase in the coefficient of magnetic field concentration at the magnetically sensitive element and, accordingly, reduces the threshold sensitivity of the combined sensor magnetic field
[ru]Рассмотрен сверхпроводниковый планарный концентратор магнитного поля в форме круглого кольца с суженной активной зоной, перекрывающей пленочный магниточувствительный элемент с гигантским магнитосопротивлением. Показано, что разбиение активной полосы на параллельные сверхпроводящие ветви и прорези, имеющие наноразмеры, увеличивает коэффициент концентрации магнитного поля на магниточувствительном элементе и уменьшает пороговую чувствительность комбинированного датчика магнитного поля
[en] Forming processes of thin-film fluoropolymer coating in the HF discharge reactor on the surface at various technological modes of deposition are considered. The molecular and structural characteristics of the films are studied. Areas of optimum technological modes of producing of nano-sized and thin fluoropolymer films with better electro physical properties are determined. (paper)
[en] Growing demand for efficient, high-resolution surface processing has led to the emergence of a rich variety of plasma-based technologies underpinned by an equally wide range of technological setups, each optimized for a specific task, e.g. highly-selective removal of surface layers, precision surface functionalization and nanoscale structuring, or deposition of thin films and nanostructures. However, with increasing device integration and miniaturization, flexible processing technologies capable of delivering complex treatments, such as the growth of complex hierarchical single- and multi-component nanostructures within a single processing environment are highly desired. Yet, such systems are difficult to achieve due to the necessity of the in-process float, and limiting technological capabilities of individual plasma sources and treatment setups. Using a novel flexible platform as an example, this review presents a careful analysis of the physical principles, capabilities and limitations of existing plasma technologies with an ultimate aim to define key principles for the development of prospective flexible platforms for complex plasma-enabled material synthesis and processing. Such a platform would have a significant potential to increase the effectiveness of plasma technology with respect to productivity, material and energy consumption, cost and turnaround time.
[en] We consider random sequential adsorption on a lattice. We use analytical results on the Bethe lattice and cactus as references to develop systematic perturbationlike expansions which are very rapidly convergent. The latter produces the jamming density of a square lattice with an accuracy within 10-5. This expansion is based on both physical and mathematical considerations and is not restricted to random sequential adsorption