The global AI Chemical Mechanical Planarization Pad Surface Profilometry Processor Market, projected to reach US$ 0.78 billion by 2034, is on a clear upward trajectory as semiconductor manufacturers i...

The beam shaping optics of synchrotrons and X-ray free-electron lasers are routinely measured using deflectometric profilometers, which use autocollimators to evaluate the surface slope from the displacement of a reticle image on a detector. Here, novel strategies to reduce systematic measurement errors by using a set of overlapping images of the reticle obtained at different positions on the detector, which can reduce the systematic errors by up to a factor of four to five without recourse to external measurements, are discussed.

We present an experimental and numerical study of linear and non-linear viscous effects in transient non-linear long wave propagation in Newtonian and shear thinning fluids in the laminar flow regime. Using optical measuring techniques (Fourier Transform Profilometry) and numerical simulations (open-source CFD library OpenFOAM), we show that the wave phase speed decreases in both glycerin and carboxymethylcellulose (CMC) solutions with respect to that in water. A decrease in wave phase speed is observed, and a dispersion relation is obtained for surface waves through dimensional analysis from five dimensionless groups: the dimensionless wave celerity, the shallowness parameter, dimensionless amplitude, Reynolds number and the flow index. To complete the picture on wave propagation, an empirical dependence between the wave attenuation and the last four dimensionless groups mentioned above is found for non-linear long surface waves. We conclude quantitatively about all the viscosity effects in non-linear long wave propagation.

We present an experimental and numerical study of linear and non-linear viscous effects in transient non-linear long wave propagation in Newtonian and shear thinning fluids in the laminar flow regime. Using optical measuring techniques (Fourier Transform Profilometry) and numerical simulations (open-source CFD library OpenFOAM), we show that the wave phase speed decreases in both glycerin and carboxymethylcellulose (CMC) solutions with respect to that in water. A decrease in wave phase speed is observed, and a dispersion relation is obtained for surface waves through dimensional analysis from five dimensionless groups: the dimensionless wave celerity, the shallowness parameter, dimensionless amplitude, Reynolds number and the flow index. To complete the picture on wave propagation, an empirical dependence between the wave attenuation and the last four dimensionless groups mentioned above is found for non-linear long surface waves. We conclude quantitatively about all the viscosity effects in non-linear long wave propagation.

Background Spasticity represents a core clinical feature of Autosomal Recessive Spastic Ataxia of Charlevoix-Saguenay (ARSACS) patients. Nonetheless, its pathophysiological substrate is poorly inves...

Abstract. The external appearance of frog skin varies among species and across body regions. Although this variation has long been recognized, it remains a

With E3499-25, ASTM has published a new standard for Profilometry-based Indentation Plastometry (PIP). The method originates from Plastometrex, which validated the standard over several years together with partners such as NPL, Airbus, Nikon, and Renishaw and steered it through ASTM’s committee process. This is relevant for engineers in additive manufacturing because it allows mechanical properties […] The post ASTM adopts PIP standard E3499-25: faster material testing for 3D printing appeared first on 3Printr.com.