Research highlights

Disordered nanoplasmonics
December 4th, 2014Research highlightsAndrea Fratalocchi 0 Comments

We investigated the field enhancement properties of plasmonic nanoparticles characterized by a random surface corrugation. We model realistic deformations from SEM images of fabricated samples. By employing Finite-Difference-Time-Domain (FDTD) simulations, we studied the interplay between Surface Plasmon Polaritons (SPP) and randomness. We show that surface roughness plays a crucial role in enhancing the electromagnetic energy […]

Colloidal solar cells with complex hierarchical structures
December 3rd, 2014Research highlightsAndrea Fratalocchi 0 Comments

Extremely thin-absorber solar cells offer low materials utilization and simplified manufacture but require improved means to enhance photon absorption in the active layer. Here, we report enhanced-absorption colloidal quantum dot (CQD) solar cells that feature transfer-stamped solution-processed pyramid-shaped electrodes employed in a hierarchically structured device. The pyramids increase, by up to a factor of 2, […]

Biological cybernetics: period doubling via nonlinear stocastic resonance
December 2nd, 2014Research highlights, UncategorizedChangxu Liu 0 Comments

Rhythms of life are dictated by oscillations, which take place in a wide rage of biological scales. In bacteria, for example, oscillations have been proven to control many fundamental processes, ranging from gene expression to cell divisions. In genetic circuits, oscillations originate from elemental block such as autorepressors and toggle switches, which produce robust and […]

Single-molecule imaging: Dream or Reality?
November 9th, 2014Research highlightsChangxu Liu 0 Comments

X-ray free-electron lasers (XFEL) are revolutionary photon sources, whose ultrashort, brilliant pulses are expected to allow single-molecule diffraction experiments providing structural information on the atomic length scale of nonperiodic objects. This ultimate goal, however, is currently hampered by several challenging questions basically concerning sample damage, Coulomb explosion, and the role of nonlinearity. By employing an […]

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