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Correlated evolution of barrier capacitance charging, generation, and drift currents and of carrier lifetime in Si structures during 25 MeV neutrons irradiation Appl. The relaxation behaviour of supersaturated iron in single-crystal silicon at 500 to 750°C Comment on " Lifetime recovery in ultra-highly titanium-doped silicon for the implementation of an(More)
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. Abstract: Electrically pumped lasing from Germanium-on-Silicon pnn(More)
Single-walled carbon nanotubes (SWNT) are grown by a plasma enhanced chemical vapor deposition (PECVD) method at 600 °C. The nanotubes are of high quality as characterized by microscopy, Raman spectroscopy, and electrical transport measurements. High performance field effect transistors are obtained with the PECVD nanotubes. Interestingly, electrical(More)
An oxygen-assisted hydrocarbon chemical vapor deposition method is developed to afford large-scale, highly reproducible, ultra-high-yield growth of vertical single-walled carbon nanotubes (V-SWNTs). It is revealed that reactive hydrogen species, inevitable in hydrocarbon-based growth, are damaging to the formation of sp(2)-like SWNTs in a diameter-dependent(More)
We fabricate and optically characterize germanium microdisks formed out of epitaxial germanium grown on silicon. Resonators coupled to fiber tapers display clear whispering gallery modes in transmission and photoluminescence with quality factors limited by germanium's material absorption. Continuous wave pumping of the cavities resulted in a dominant(More)
We electrically and optically characterize a germanium resonator diode on silicon fabricated by integrating a germanium light emitting diode with a microdisk cavity. Diode current-voltage characteristics show a low ideality factor and a high on/off ratio. The optical transmission of the resonator features whispering gallery modes with quality factors of a(More)
Ghrelin induces orexigenic behavior by activation of growth hormone secretagogue 1 receptors (GHSRs) in the ventral tegmental area (VTA) as well as hypothalamus, suggesting the involvement of mesolimbic dopamine system in the action of ghrelin. The present study aimed to identify neuronal mechanisms by which peripherally administered ghrelin regulates the(More)
Outline • Emerging nonvolatile memories • Switching behaviors metal sulfides and metal oxides • Device applications nonvolatile memory and nonvolatile logic • Phenomenological behaviors • Physical mechanisms • Scalability • Summary Motivations for new nonvolatile memory research • Scalability limit beyond 32nm nodes of existing memory both volatile memory(More)
Height, which is partially determined by GH secretion, is genetically influenced. The purpose of this study was to identify polymorphisms in the GH-1 gene, which are associated with altered GH production. The subjects included prepubertal short children with GH insufficiency without gross pituitary abnormalities (n = 43), short children with normal GH(More)