Subthreshold Slope
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. Estudo de transistores de tunelamento controlados por efeito de campo. / Study of tunnel field effect transistors.
This works presents the study of tunneling field effect transistors, namely TFETs. Analyses were performed based on theoretical explanations, numerical simulations and experimental data in order to show this technology suitability as an alternative for the continuous devices scaling. The basic idea of making use of band-to-band tunneling as the main current
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/03/2012
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2. Análise dos parâmetros analógicos do dispositivo SOI DTMOS. / Analog performance of dynamic threshold voltage SOI MOSFET.
This work presents the study of analog performance parameters of PDSOI (Partially-depleted) transistor in comparison with a Dynamic Threshold MOS transistor (DTMOS). The DTMOS is a partially-depleted device with dynamic threshold voltage. This variation of threshold voltage is obtained when the gate is connected to the silicon film (channel) of the PDSOI dev
Publicado em: 2009
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3. Isolantes de porta com altas constantes dieletricas (High K) para tecnologia MOS / High K gate insulators for MOS technology
High k insulators for the next generation (sub-32 nm CMOS (complementary metaloxide-semiconductor) technology), such as titanium oxide (TiOx), titanium oxynitride (TiOxNy), titanium-aluminum oxynitride (AlxTiwOyNz), titanium-aluminum nitride (AlxTiwNz) and titanium-aluminum oxide (AlxTiwOy), have been obtained by Ti or Ti/Al e-beam evaporation, with addition
Publicado em: 2008
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4. Synaptically triggered action potentials begin as a depolarizing ramp in rat hippocampal neurones in vitro.
1. During just-suprathreshold synaptic activation of CA1 pyramidal cells in rat hippocampal slices in vitro the action potential begins as a slow depolarizing ramp, superimposed on the underlying EPSP and forming an integral part of the action potential. We call this ramp a synaptic prepotential (SyPP). 2. In order to examine the SyPP, a procedure for subtra
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5. Repetitive firing properties of developing rat brainstem motoneurones.
1. The repetitive firing properties of neonatal and adult rat hypoglossal motoneurones (HMs) were investigated in a brainstem slice preparation. Neonatal HMs could be classified into two main groups: (1) neurones with a decrementing or adapting firing pattern (type D); exhibiting an early and a late phase; and (2) neurones with an incrementing or acceleratin
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6. Discharge characteristics and rapid resetting of autoactive aortic baroreceptors in rats.
1. An in vitro aortic arch-aortic nerve preparation was used to characterize the pressure-discharge properties of aortic 'autoactive' baroreceptors (aBRs), a functionally unique group of baroreceptors that discharge continuously below pressure threshold (Pth). These units contrast to more familiar 'quiescent' BRs (qBRs) that are silent below Pth. This study
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7. Activation of NMDA receptors is necessary for the induction of associative long-term potentiation in area CA1 of the rat hippocampal slice.
1. It is commonly assumed that the role of the strongly activated heterosynaptic input during the induction of associative long-term potentiation (LTP) is to relieve the magnesium blockade of NMDA receptors located at the weakly stimulated synapses and thereby allow the weak input to undergo potentiation. We tested this assumption by using a caged form of th
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8. Microinjection of catalytic subunit of cyclic AMP-dependent protein kinase enhances calcium action potentials of bag cell neurons in cell culture
We have found that the calcium action potentials of bag cell neurons from the abdominal ganglion of Aplysia may be enhanced by intracellular microinjection of the catalytic subunit of cyclic AMP-dependent protein kinase (ATP:protein phosphotransferase, EC 2.7.1.37). The catalytic subunit was purified from bovine heart and shown to be effective in stimulating
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9. Relation between the specific H reflex facilitation preceding a voluntary movement and movement parameters in man.
In a reaction-time situation, the monosynaptic spinal reflex (H reflex) is facilitated before the onset of an electromyographic (e.m.g.) response. The aim of the present investigation was to study aspects of this facilitation. Human subjects were required to perform isometric plantarflexions of the foot in response to a visual stimulus. The movement was alwa
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10. Non-cholinergic transmission in a sympathetic ganglion of the guinea-pig elicited by colon distension.
Sensory transmission from the colon was studied using a preparation of inferior mesenteric ganglion (i.m.g.) attached to a segment of distal colon in guinea-pigs, in vitro. Electrical responses to colon distension were recorded intracellularly from neurones of the i.m.g. Distension of the distal colon up to an intraluminal pressure of 20 cmH2O caused an incr
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11. Electrical and integrative properties of rabbit sympathetic neurones re-evaluated by patch clamping non-dissociated cells.
1. Voltage recordings were performed on non-dissociated sympathetic neurones from rabbit coeliac ganglia using the whole-cell configuration of the patch clamp technique. 2. Cells were classified depending on their firing pattern as silent cells (63%) producing either phasic (24%) or tonic (76%) spike discharge in response to depolarizing currents, and pacema