نتایج جستجو برای: four roll bending
تعداد نتایج: 665268 فیلتر نتایج به سال:
Important quality criteria for profile bending are an accurate profile contour and an accurate cross section. During the bending process, torsion of the profile, deformation of the cross section, and deviations at the profile contour can occur. If these undesired effects are too large, the bent profile is not usable. Critical causes of profile cross section deformation are thin wall thicknesses...
We study grain boundaries in the Swift-Hohenberg equation. Grain boundaries arise as stationary interfaces between roll solutions of different orientations. Our analysis shows that such stationary interfaces exist near onset of instability for arbitrary angle between the roll solutions. This extends prior work in [6] where the analysis was restricted to large angles, that is, weak bending near ...
We review recent advances in the generation of photonics materials over large areas and volumes, using the paradigm of shear-induced ordering of composite polymer nanoparticles. The hard-core/soft-shell design of these particles produces quasi-solid "gum-like" media, with a viscoelastic ensemble response to applied shear, in marked contrast to the behavior seen in colloidal and granular systems...
We investigated the optical, electrical, structural, and surface properties of roll-to-roll [R2R] sputter-grown flexible IZO/Ag/IZO/Ag [IAIA] multilayer films on polyethylene terephthalate substrates as a function of the top indium zinc oxide [IZO] thickness. It was found that the optical transmittance of the IAIA multilayer was significantly influenced by the top IZO layer thickness, which was...
Despite the availability of elaborate varieties of nanoparticles, their assembly into regular superstructures and photonic materials remains challenging. Here we show how flexible films of stacked polymer nanoparticles can be directly assembled in a roll-to-roll process using a bending-induced oscillatory shear technique. For sub-micron spherical nanoparticles, this gives elastomeric photonic c...
Sequence-dependent bending of DNA induced by cisplatin: NMR structures of an A.T-rich 14-mer duplex.
The NMR solution structure of the A.T rich DNA 14-mer duplex d(ATACATGGTACATA).d(TATGTACCATGTAT) is reported. This is compared with the NMR structure of the same duplex intrastrand cross-linked at the d(G*pG*) site by cis-(Pt(NH3)2¿2+, derived from the anticancer drug cisplatin. The unmodified duplex has B-DNA geometry, but there is a large positive base-pair roll (roll angle 24 +/- 2 degrees) ...
Continuous cyclic bending (CCB) has been proposed as a useful straining technique to produce the high strain on the surface layers and the lower strain in the central layer of the sheet. A pure aluminum sheet is worked by the CCB using the ‘‘Roll traveling device’’ and ‘‘Roll driven machine’’. It is found that a sharp Cube orientation is formed by the CCB and subsequent annealing in the pure al...
This study uses the Joule heating effect-generated temperature difference to monitor in real-time and localize both compressive and tensile strains for the polymer substrates used in the roll-to-roll process. A serpentine gold (Au) line was patterned on a polyethylenenaphthalate (PEN) substrate to form the strain sensor based on thermoresistive behavior. This strain sensor was then subjected to...
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