Fondazione Istituto Italiano Di Tecnologia

Infm Istituto Nazionale Per La Fisica Della Materia

Consiglio Nazionale Delle Ricerche

Fabio Beltram

Roberto Cingolani

Alessandro Tredicucci

Alexander Giles Davies

Edmund Harold Linfield

Marco Cecchini

Salvatore Girardo

Dario Pisignano

Ruedeger Koehler

Harvey Edward Beere

Laura Marchetti

Fernanda Ricci

A device for controlling fluid motion in a micro/nanofluidic structure of channels by means of surface acoustic waves is described. The device comprises a structured volume of material bearing a predetermined configuration of micro/nanofluidic channels for holding and transferring amounts of fluids adapted to define at least one fluid inlet and at least one fluid outlet and presenting a hydrophobic behaviour for the fluids to be handled and a substrate made of material with piezoelectric properties coupled to the micro/nanofluidic channels.

Device for controlling fluid motion into micro/nanochannels by means of surface acoustic waves

A semiconductor laser comprises an active region () which, in response to a pumping energy applied thereto, can produce a stimulated emission of radiation with a central wavelength (&#x3bb;) in the far infrared region, and a confinement region () suitable for confining the radiation in the active region (), and comprising at least one interface () between adjacent layers that is capable of supporting surface plasmon modes generated by an interaction of the interface with the radiation. The confinement region () comprises a wave-guide layer () which is delimited on opposite sides by a first interface and by a second interface (). The guide layer () is doped in a manner such that the first and second interfaces () are capable of supporting the plasmon modes, respectively, and is of a thickness (d) such as to bring about the accumulation of the plasmon modes in proximity to the first and second interfaces (), outside the layer (), and substantially a suppression of the plasmon modes, inside the layer.

THz semiconductor laser incorporating a controlled plasmon confinement waveguide

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Gorizia, Italy

Fabio Beltram