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We investigate hot carrier solar cells using III-V semiconductors. Here, the properties of a quantum well double barrier resonant tunneling structure comprised of Al0.6Ga0.4As/GaAs/Al0.6Ga0.4As was used as selective energy contacts (SEC). The sample was fabricated by MBE on GaAs(001). The GaAs epitaxial layers were used as the optical absorbing layer. A quantum well resonant tunneling structure was...
We introduce an anatomical and electrophysiological model of deep brain structures dedicated to magnetoencephalography (MEG) and electroencephalography (EEG) source imaging. So far, most imaging inverse models considered that MEG/EEG surface signals were predominantly produced by cortical, hence superficial, neural currents. Here we question whether crucial deep brain structures such as the basal...
The hard X-ray detector (HXD-II) onboard Astro-E2 consists of a main detector with energy range 10-600 keV and a BGO active shield detector for background reduction. The shield detector wide-band all-sky monitor (WAM) has been designed not only for background reduction but also for all sky monitoring of gamma-ray bursts (GRB) and bright soft gamma-ray sources. WAM has a large geometrical structure...
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