This paper describes an effective on-line polymer characterization technique by using small-angle light-scattering (SALS) image processing software and wavelet analysis. The phenomenon of small-angle light scattering has been applied to give information about transparent structures on morphology. Real-time visualization of various scattered light image and light intensity matrices is performed ...

Continuous monitoring of in vivo pulsatile blood flow and pulse wave velocity (PWV) is important for clinical applications. These parameters are correlated with physiological parameters, such as pressure elasticity vessels. A multimode fiber diffuse speckle contrast analysis (MMF-DSCA) system was developed fast measurement velocity. With MMF CCD sensor, the could be captured processed higher te...

A dynamic light scattering apparatus was built with a HeNe laser; the beam incident on a sample of particles(microspheres of one or multiple diameters or casein undigested and digested) suspended in water scatters into a random pattern product of the coherent superposition of the outgoing waves scattered from the spheres. Because the spheres are in constant Brownian motion, the pattern randomly...

We consider the propagation of a diffusive wave in a scattering medium submitted to a homogeneous expansion. The light multiply scattered by a glass spheres sample is measured. We analyze the variations of the scattered light when the material and the optical wavelength are dilated. We experimentally show that an isotropic expansion of the material is equivalent to a contraction of the waveleng...

The angular and temporal distributions of light scattered around the backward direction from biological tissues are measured. An enhancement of scattered light intensity around the backward direction, which is associated with the weak photon localization, is observed. The transport mean free path l(t) and the absorption length l(a) of the light in biological tissue can be obtained from the angu...

We characterize the spectroscopic line spread functions of the spectroscopic CCD modes for high contrast objects. Our long range goal is to develop tools that accurately extract spectroscopic information of faint, point or extended sources in the vicinity of bright, point sources at separations approaching the realizable angular limits of HST with STIS. Diffracted and scattered light due to the...

A computational model for light propagation through an etched alpha-particle track was described. Four different cases for light ray propagation through the etched track were studied in detail. The track profile, optical appearance and distribution of scattered light were given for three typical types of etched tracks. These laid the foundation for future automatic determination of properties o...

Digital optical phase conjugation (DOPC) is an emerging technique for focusing light through or within scattering media such as biological tissue. Since DOPC systems are based on time reversal, they benefit from collecting as much information about the scattered light as possible. However, existing DOPC techniques record and subsequently phase-conjugate the scattered light in only a single-pola...

Signaling from keratins B eing supportive is just not enough for a keratin. Seyun Kim, Pauline Wong, and Pierre Coulombe (Johns Hopkins University, Baltimore, MD) fi nd that Keratin 17 (K17) also takes on signaling duties for cell growth during the wound response. Keratins are a family of structural proteins that form intermediate fi laments. Coulombe’s group had found that embryos lacking K17 ...