Here we continue our previous exploratory work [Huhtala et al., Comput. Phys. Commun. 146 (2002) 30] in investigating carbon nanotube structures under different bending strain conditions by using large-scale molecular dynamics simulations. On the one hand bending strain is obtained by forcing nanotubes of different chirality to a closed toroidal configuration and on the other hand by bending a ...

Low-loss, hollow, flexible, metal-coated waveguides were designed and fabricated for the maximal transmission of terahertz radiation. Since recent terahertz skin, colon, and breast cancer studies showed a contrast between normal and diseased tissues between 500 to 600GHz frequencies, flexible metal-coated waveguides with various bore diameters were studied at both 584GHz and 1.4THz frequencies ...

Accidental internal detonation waves are a common threat to the pipeline systems of petrochemical or nuclear fuel processing plants. In order to quantify the failure potential of piping structures, especially at bends, accurate detonation pressure histories are required [5]. Since detonations inhibit multi-dimensional wave structures with triple points of enhanced chemical reaction, one-dimensi...

While there has been increasing studies of MoS2 and other two-dimensional (2D) semiconducting dichalcogenides on hard conventional substrates, experimental or analytical studies on flexible substrates has been very limited so far, even though these 2D crystals are understood to have greater prospects for flexible smart systems. In this article, we report detailed studies of MoS2 transistors on ...

Intensive investigations have been drawn on nanoscale ferroelectrics for their prospective applications such as developing memory devices. In contrast with the commonly used electrical means to process (i.e., read, write or erase) the information carried by ferroelectric domains, at present, mechanisms of non-electrical processing ferroelectric domains are relatively lacking. Here we make a sys...

We present results of global 3D MHD simulations of warp and density waves in accretion disks excited by a rotating star with a misaligned dipole magnetic field. A wide range of cases are considered. We find for example that if the star’s magnetosphere corotates approximately with the inner disk, then a strong one-arm bending wave or warp forms. The warp corotates with the star and has a maximum...

A photon emitted near a compact object at an angle α with respect to the radial direction escapes to infinity at a different angle ψ > α. This bending of light is caused by a strong gravitational field. We show that, in a Schwarzschild metric, the effect is described by 1− cosα = (1 − cosψ)(1− rg/R) where R/rg is the emission radius in Schwarzschild units. The formula is approximate and it appl...

The aim of the study is to obtain an optimal arm section for the structures like pulleys, gears, flywheels etc. considering variation of rim thickness with pulley radius. Presently, the design of arm pulley with thin rim is being carried out with an assumption that the bending moment (BM) is shared by half the number of arms, whereas in case of arm gear or V-Belt pulley the assumption is made t...

Modifications in scattering strength of and local field enhancement by retardation-based plasmonic nanoantennas when being transformed from straight nanorods to split-ring resonators are investigated experimentally. Scattering properties are characterized with linear reflection and extinction spectroscopy of nanoantenna arrays, whereas local field enhancements are evaluated for individual nanoa...

This paper proposes the strategy of fabricating an all fiber wide-range displacement sensor based on the macro-bend coupling effect which causes power transmission between two twisted bending plastic optical fibers (POF), where the coupling power changes with the bending radius of the fibers. For the sensor, a structure of two twisted plastic fibers is designed with the experimental platform th...