Digital holographic microscopy is used to numerically refocus a recorded hologram at an arbitrary axial distance. However, as a straightforward property of coherent light fields, image reconstruction on an arbitrary tilted plane could be directly obtained by a rotation in k-space. We demonstrate that this property allows the real-time microscopic inspection of particle distribution over three mutually orthogonal planes at the same time. As a straightforward application we use the proposed technique for real-time monitoring of fluid flow over the three cross sections of a microfluidic channel.

In the paper Ionic polymer-polymer composite (IP 2 C ) membranes are considered. They are usually addressed and studied as sensors or actuators making use of the relationship between voltage and deflection that they exhibit. Here a different use as sensor is proposed, studying some of the effects that a mechanical pressure produces on the output voltage once a constant or a alternate power supply is applied. The most relevant results obtained performing some tests, making use of an ad-hoc experimental set up developed for this purpose, are presented and discussed, putting in evidence the feasibility and the effectiveness of the proposed usage.

On beam tests were carried out on PbWO 4 crystals. One of the aims of this work was to evaluate the contribution of theČerenkov component to the total light yield. The difference in the timing characteristics of the fastČerenkov