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This paper describes a hybrid silicon/plastic chip which is used to analyze DNA samples without the need of fluorescence or surface functionalization. The viscosity and density of the solutions to be tested are measured using a vibrating silicon beam immersed in the fluid. The sensitivity of the chip with respect to DNA concentration and length is analyzed, yielding a limit of detection of 0.5 μg/μl. We show that the sensitivity of the chip is statistically significant for PCR end-point detection. State-of-the-art on-chip detection methods of DNA solutions need optical devices or specially designed reactions. With the viscometric method proposed in this paper, these drawbacks are avoided., Procedia Engineering, 47, 26th European Conference on Solid-State Transducers, EUROSENSOR 2012

In this work a numerical study on the impact behavior of an all composite wing-box is presented. The numerical analyses have been performed by means of advanced numerical models implemented in Abaqus/Explicit. The aim was to estimate the intra-laminar and inter-laminar damage behaviour in a localized area, and, by a Global-local approach, to investigate the impact influence on the overall structural behaviour. The numerical investigation of complex composite structures under several impact conditions in terms of impact position and energy can complement the experimental results potentially leading to a reduction of the experimental tests to be performed with considerable time and cost saving.