APPLIED PHYSICS: Dynamic 3D Imaging

Advanced Diffusion Physics Applied to Body Imaging

Diffusion-weighted imaging (DWI) offers insight into cellular status, density, and structural organization by way of sequences sensitive to water mobility which is affected by these properties [1, 2]. Macroscopic tissue motion unrelated to diffusion can confound in vivo diffusion measurements therefore single-shot techniques are nearly exclusively used to mitigate extraneous motion, particularl...

Applied Physics

A portable modular gas sensor for measuring the 13 C/ 12 C isotopic ratio in CO 2 with a precision of 0.8%o(±1σ) was developed for volcanic gas emission studies. This sensor employed a difference frequency generation (DFG)-based spectroscopic source operating at 4.35 µm (∼ 2300 cm −1) in combination with a dual-chamber gas absorption cell. Direct absorption spectroscopy using this specially des...

Applied Physics Letters

A simple technique is explored to determine the temporal photo-response, s, of individual semiconducting SiC and Si nanowires (NWs), with a high time resolution. Laser-assisted field emission (LAFE) from the NWs is first shown to be highly sensitive to continuous laser illumination. Pulsed illumination is then combined with measurements of the total energy distributions to determine s which wer...

Polarization Imaging Applied to 3D Reconstruction of Specular Metallic Surfaces

This paper presents a new application of “Shape from Polarization” method to specular metallic surfaces. It demonstrates how to extend the commonly used method for dielectric to metallic surfaces. Studying the state of polarization of the reflected light is very useful to get information on the normals of the surface. After computing the surface normals, the 3D surface is reconstructed thanks t...

Physics Applied to Anaesthesia