One-dimensional spin-glass

A model of a one-dimensional spin-glass is studied; this is a system of localized spins with indirect exchange interaction via the conduction electrons. It is assumed that the electrons are scattered at defects and their mean free path is less than the average interspin distance. Specific heat and magnetic susceptibility are calculated in various temperature regions. The properties in a strong magnetic field are determined. The case of a long-range interaction is briefly discussed.     

One-dimensional conductors

A brief review of one-dimensional conductors with emphasis on the synthetic criterion, the model systems of radical ion salts, charge transfer complexes, metal chain systems, polymeric conductors and A₃B compounds is given.     

One-dimensional separation model

The current literature on removal of dust from gas employs a separation model [1] that necessitates the use of experimental data on the fractional separation efficiency. The present study considers a physical model that enables determination of the separation efficiency without resorting to experimental data.Institute for the Cryosphere of the Earth, Siberian Branch of the Russian Academy of Sciences, Tyumen. Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 65, No. 1, pp. 57–61, July, 1993.     

One-dimensional ZnO nanostructures

The wide-gap semiconductor ZnO with nanostructures such as nanoparticle, nanorod, nanowire, nanobelt, nanotube has high potential for a variety of applications. This article reviews the fundamentals of one-dimensional ZnO nanostructures, including processing, structure, property, application and their processing-microstructure-property correlation. Various fabrication methods of the ZnO nanostructures including vapor-liquid-solid process, vapor-solid growth, solution growth, solvothermal growth, template-assisted growth and self-assembly are introduced. The characterization and properties of the ZnO nanostructures are described. The possible applications of these nanostructures are also discussed.     

One-dimensional nitrogen-containing carbon nanostructures

One-dimensional nitrogen-containing carbon nanostructures (1-D NCNSs) have emerged in the past two decades as exceptionally promising nanomaterials due to their unique physical and chemical properties which enable a broad range of applications in various fields of modern technology. Recent investigations revealed that the 1-D NCNS-based materials can have a profound impact on energy conversion and storage, catalysis and electrocatalysis, sensors, electronic nanodevices, environmental protection, and biology-related applications. The aim of the present review article was to provide a comprehensive overview of scientific progress in 1-D NCNSs such as N-containing carbon nanotubes (NCNTs, e.g., single-walled (SWNCNTs), double-walled (DWNCNTs), and multi-walled NCNTs (MWNCNTs)), nanofibers (NCNFs), nanowires (NCNWs), nanorods (NCNRs), and nanohorns (NCNHs), and evaluate their future perspective. Various methods of preparation of 1-D NCNSs and their composites are summarized and discussed. The structure–properties relations of 1-D NCNSs, based on the theoretical approach and numerous relevant physico-chemical methods of characterization, were outlined. The emphasis is given to the properties of 1-D NCNSs rendered by nitrogen incorporation into the carbon matrix in order to provide deeper insight into the specific characteristics which determine materials’ performances within the specific fields of applications.     

One-dimensional carbon and ZnO

Carbon nanotube (CNT) and one-dimensional ZnO are two of the most important nano materials for which continuous efforts are being made for the development of novel processes. In this paper we present new approaches for the growth of CNTs and ZnO nanorods. Through the selection of an appropriate catalyst, namely, Fe-Si thin film, aligned CNT can be obtained at a temperature as low as 370 °C using a conventional microwave plasma-enhanced chemical vapor deposition (MPCVD) technique. This is attributed to the fact that the addition of Si greatly enhances the carbon diffusion such that a fast reaction-controlled growth is obtained. Also, with the use of a decisive electroless copper layer deposited on Si or glass substrate, semi-aligned ZnO nanorods can be obtained at the room temperature. It was found that the residual stress in the electroless copper is the key to the formation of ZnO nanorods.     

One-dimensional inverse thermoelasticity problems

The unique solvability of two one-dimensional inverse problems on determining the coefficients of thermoelasticity equations is established; the solution algorithm for these problems is indicated and numerical calculations are given.State Pedagogical Institute, Gynadzha. Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 65, No. 1, pp. 98–104, July, 1993.     

One-dimensional nanostructures of ferroelectric perovskites

Nanorods, nanowires, and nanotubes of ferroelectric perovskites have recently been studied with increasing intensity due to their potential use in non-volatile ferroelectric random access memory, nano-electromechanical systems, energy-harvesting devices, advanced sensors, and in photocatalysis. This Review summarizes the current status of these 1D nanostructures and gives a critical overview of synthesis routes with emphasis on chemical methods. The ferroelectric and piezoelectric properties of the 1D nanostructures are discussed and possible applications are highlighted. Finally, prospects for future research within this field are outlined.     

One-dimensional plastic materials with work-hardening

Summary Acceleration waves in one-dimensional plastic materials are investigated by the theory of singular points. The unloading wave propagates with a constant velocity, while the propagation velocity of the loading wave is less than that of the unloading wave and the velocity depends upon the stress and the work-hardening. The growth and decay of the amplitude of the waves are also analyzed. The unloading wave propagates with a constant amplitude. The amplitude of the loading wave may grow or decay and the choice between the two depends upon the stress, the work-hardening and whether the wave is compressive or expansive. In the case of growth the amplitude tends to infinity in finite time, that is, the blow time, and the acceleration wave coalesces into a shock wave. In the case of decay the amplitude tends to zero as the time tends to infinity. The propagation velocity, the blow time and the blow distance are calculated and plotted against the strain.     

Solution-phase Synthesis of One-dimensional Semiconductor Nanostructures

The synthesis of one-dimensional （1D） semiconductor nanostructures has been studied intensively for a wide range of materials due to their unique structural and physical properties and promising potential for future technological applications. Among various strategies for synthesizing 1D semiconductor nanostructures, solution-phase synthetic routes are advantageous in terms of cost, throughput, modulation of composition, and the potential for large-scale and environmentally benign production. This article gives a concise review on the recent developments in the solution-phase synthesis of ID semiconductor nanostructures of different compositions, sizes, shapes, and architectures. We first introduce several typical solution-phase synthetic routes based on controlled precipitation from homogeneous solutions, including hydrothermal/solvothermal process, solution-liquid-solid （SLS） process, high-temperature organic-solution process, and low-temperature aqueous-solution process. Subsequently, we discuss two solution-phase synthetic strategies involving solid tem- plates or substrates, such as the chemical transformation of 1D sacrificial templates and the oriented growth of 1D nanostructure arrays on solid substrates. Finally, prospects of the solution-phase approaches to 1D semiconductor nanostructures will be briefly discussed.     

One-dimensional magnetopolymeric nanostructures with tailored sizes

Ultra-high aspect ratio nanofibers composed of poly(vinyl alcohol) and CoFe(2)O(4) nanoparticles (PVA/CoFe(2)O(4)) and moderate aspect ratio nanofibers composed of poly(vinyl chloride) and Fe(3)O(4) nanoparticles (PVC/Fe(3)O(4)) have been prepared. Magnetopolymeric one-dimensional (1D) nanostructures with any diameter and length can be prepared by template synthesis using anodic aluminum oxide (AAO) followed by the replication methods presented in this work. These replication methods are very effective, and allow the nanomoulding of any polymer-nanoparticle 1D composite. A first magnetic characterization of the nanostructured composites reveals a modest magnetic anisotropy. The development of magnetopolymeric nanofibers with adjusted length and diameter opens new opportunities in a wide range of applications.     

One-dimensional stability of normal gas combustion

By analyzing the behavior of one-dimensional perturbations imposed on a normal flame in gases we have established an intensive stability of combustion entirely attributable to the stabilization effect of compressibility.     

One-dimensional growth induced by thermal stress

Amorphous SiO_x nanowires grown on the surface of big Ag particles were synthesized by evaporation of a mixture of SiO and Ag₂O. The morphologies at different growth stages hint at a special kind of growth mechanism different from the classical vapor–liquid–solid (V–L–S) mechanism and oxygen assistant mechanism. A layer of SiO_x wraps the Ag particles in the cooling process. The SiO_x nanowire growth is induced by the thermal stress accumulated in the interface of the outer SiO_x layer and Ag particles for different shrinking coefficients. When the thermal stress accumulates to a certain degree, the SiO_x layer chaps and peels off from the Ag particles to form SiO_x nanowires.     

One-dimensional calculations of two-phase mixing flows

A new algothm for the solution of two-phase fluid flow problems is presented. The algorithm consisently ensures that the evolved volume fractions are all positive and sum to unity, even in the presence of large spatial and temporal gradients of volume fraction. The momentum equations are then solved using an iterative pressure correction method. Example calculations for buoyancy driven flows, with and without phase changes, are presented.     

一维硅纳米材料形貌的研究

一维硅纳米材料是重要的纳米电子器件材料,由于其形貌不同,导致的电学等特性也不相同,因此一维硅纳米材料的形貌是重要的研究内容之一.一维硅纳米结构包括纳米线、纳米带及纳米管等,同种一维硅纳米材料由于制备方法不同其形貌也不相同.评述了一维硅纳米材料的形貌及其制备方法.     

One-dimensional van der Waals quantum materials

The advent of graphene and other two-dimensional van der Waals materials, with their unique electrical, optical, and thermal properties has resulted in tremendous progress for fundamental science. Recent developments suggest that taking one more step down in dimensionality — from mono-layer atomic sheets to individual atomic chains — can bring exciting prospects in fundamental science and practical applications. The atomic chain is the ultimate limit in material downscaling, a frontier for establishing an entirely new field of one-dimensional quantum materials. Here, we review this emerging area of one-dimensional van der Waals quantum materials and anticipate its future directions. We focus on quantum effects associated with the charge-density-wave condensate, strongly-correlated phenomena, topological phases, and other unique physical characteristics, which are attainable specifically in van der Waals materials of lower dimensionality. Possibilities for engineering the properties of quasi-one-dimensional materials via compositional changes, vacancies, and defects, as well as their potential applications in composites are also discussed.