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We present here measurements on hexagonal cavities that have areas between 2.0 and 8.6 mu m/sup 2/. The 2D triangular lattice PBG mirrors are etched into a GaAs/AlGaAs waveguide heterostructure with 3 layers of InAs quantum dots at the centre of a 240 nm t ...
The photoluminescence energy of strained (Ga, In)As quantum wells grown on (001) GaAs slightly misoriented (2 degrees-6 degrees) towards (111)A exhibits a blue shift when compared to quantum wells grown on perfectly oriented substrates. It is shown that th ...
A Hall mobility as high as 153,800 cm2 V-1 s-1 at 77 K with N(d) - N(a) = 1.5 x 10(14) cm-3 has been obtained by adjusting the growth temperature and the phosphine cracking temperature. The 4 K photoluminescence spectra show finely resolved excitonic trans ...
The past ten years of developmental genetics have revealed that most of our genes are shared by other species throughout the animal kingdom. Consequently, animal diversity might largely rely on the differential use of the same components, either at the ind ...
This paper describes a novel robotic assembly station, named Sixtiff, which has been conceived and realized at the Swiss Institute of Technology (EPFL) in Lausanne, Switzerland. This station was developed in order td actively assemble micro-optical devices ...
The calcn. of material balances during transitions implies the evaluation of cumulated quantities consumed and produced. This article presents the techniques to achieve this goal by evaluating the quantities involved in the reactions at each observation an ...
A central debate regarding neocortical function concerns the degree to which the underlying microcircuitry is stereotypically organized. Stereotypy reflects invariance in structure and function, as a result of common genetic templates and environmental con ...
