Key features:  Fully integrated automatic turn-key system: no optical alignment is necessary;  Compact (20 " ×21 " ×26.5 ") and light weight (~20lbs);  High measurement throughput (~0.1 second/point) for high speed, large-area solar cell inspection;  Excellent spatial resolution (~ 65 µm in normal mode and 30 µm with F-theta lens) for micro-sized defect detection;  Multiple laser excitatio...

This paper describes the detection and identification of cracking severity in a reinforced concrete beam using modal data. Experimental modal test was performed on the beam before and after application of load of increasing intensity to induce a single crack at a fixed location. Modal parameters extracted were categorised into hvo groups, namely local response parameter (mode shape data) and gl...

This paper presents a new approach for proving that the presence of a bounded defect in a uniform open waveguide cannot produce trapped modes, contrary to the case of a closed waveguide. The originality of the proof lies in the fact that it relies on a modal decomposition. It shows in particular that the absence of trapped modes results from a strong connection between the various modal compone...

This book is divided into two sections, one clinical, the second major section dealing throughout with researches into intelligence. This second part contains a valuable survey of all the more usual intelligence tests. In addition to the problem of the inheritance of mental deficiency, Part 1 deals also with the transmission of normal psychological faculties. Symptoms, treatment, anatomy and tr...

Geometrical disorder is present in many physical situations giving rise to eigenvalue problems. The simplest case of diffusion on a random lattice with fluctuating site connectivities is studied analytically and by exact numerical diagonalizations. Localization of eigenmodes is shown to be induced by geometrical defects, that is sites with abnormally low or large connectivities. We expose a " s...

We consider three dimensional lossless periodic dielectric (photonic crystals) and acoustic media having a gap in the spectrum. If such a periodic medium is perturbed by a strong enough defect, defect eigenmodes arise, localized exponentially around the defect, with the corresponding eigenvalues in the gap. We use a modified Birman-Schwinger method to derive equations for these eigenmodes and c...

The properties of photonic crystal (PC) filters in one-dimensional photonic crystal (1D PC) containing a defect layer are studied theoretically using the transfer matrix method. The effect of thickness of defect layers is studied. It is shown that one defect mode and two defect modes appear inside the forbidden band gaps in its reflection spectra. By changing the thickness of the defect layer, ...