Vortex fluidic mediated shearing of supramolecular gels in thin films leads to complete disruption of fluorous bis-urea derived gels. Hydrocarbon analogues however, are only partially disrupted, which emphasizes the resistance of non-fluorous bis-urea gelators towards shear. The gel structures have been studied by combining the thin film shearing with small angle neutron scattering. This techni...

We present a new method for measuring the spectral phase of ultrashort pulses that utilizes spectral shearing interferometry with zero delay. Unlike conventional spectral phase interferometry for direct electric-field reconstruction, which encodes phase as a sensitively calibrated fringe in the spectral domain, two-dimensional spectral shearing interferometry robustly encodes phase along a seco...

We describe a device for automated fragmentation of genomic DNA by hydrodynamic shearing using a filter screen with uniform pores. Human genomic DNA can be fragmented reproducibly to a range of 2000-12,000 bp by using various fluid flow rates and screens with 0.5-10-microm pores. The utilization of disposable screens eliminates sample cross-contamination and the tendency of device clogging, com...

The damage of seeds in grain augers has been divided into shearing and jamming, occurring at the inlet and the casing wall, respectively. The shearing was strongly reduced by a displacement body attached to the screw blade. Measures for the reduction of jamming, partly based on a theoretical approximation, have been summarized. A number of experiments, performed for verification, agreed with th...

Binary Decision Diagram (BDD) has been shown to be applicable in image coding. A technique presented in this paper extends the functionality of BDD in image coding to cover major geometric transformations of image such as translation, rotations, scaling and shearing. By introducing the concept of transition branch, nonuniform and uniform translation of image by a given displacement could be obt...

Electro-optic spectral shearing interferometry is implemented for the highly sensitive characterization of ultrashort pulses from a free-running source. A simple phase-locked-loop clock recovery circuit is used to extract the high-frequency microwave clock signal to drive the phase modulator for spectral shearing. We demonstrate accurate full temporal characterization of 200-fs pulses from an o...

The role of the liquid-crystal layer in the phase-shifting shearing interferometer that was proposed by Griffin [Opt. Lett. 26, 140 (2001)] is analyzed. An extra voltage-dependent phase difference is produced when the phase retarder is oriented at an angle from the optical axis of the laser beam such that the interferogram will not repeat itself after a 2pi phase change of the liquid-crystal re...

Diaphragm forming of fibre/epoxy materials is a potential cost-effective approach in manufacturing aerospace components. Significant intra-ply shearing is essential in diaphragm forming a double-curvature geometry. In previous studies, the intra-ply shearing was addressed based on an ideal fibre reinforced fluid (IFRF) model. The IFRF model was tried in the present study for a thermoset materia...

Adaptive optics (AO) is a technology used to improve the performance of optical systems by reducing the effect of wavefront distortions. It is used in astronomical telescopes and laser communication systems to remove the effects of atmospheric distortion. An AO system basically consists of three main components, a wavefront sensor, a wavefront corrector and a control system. A new wavefront sen...

The flocculated structure and flow properties of suspensions of brilliant carmine 6B (C6B) in polybutadiene were investigated. In this study, we have used simple suspensions of C6B in polybutadiene having different viscosity. Stress overshoot phenomenon after various rest periods and double-step shearing test were examined for the suspensions. In the double-step shearing test, a transient stres...