826 research outputs found
Comparison of BSIM3v2 and MOS MODEL 9
No full textThis report presents the results of parameter extraction for a 0.8#m CMOS process using a commercially available MOS model, BSIM3v2. A comparison of the performance of BSIM3v2 and the Philips model, MOS Model 9, is subsequently presented
Investigating Laser-Induced Phase Engineering in MoS₂ Transistors
No full textPhase engineering of MoS₂ transistors has recently been demonstrated and has led to record low contact resistances. The phase patterning of MoS₂ flakes with laser radiation has also been realized via spectroscopic methods, which invites the potential of controlling the metallic and semiconducting phases of MoS₂ transistors by simple light exposure. Nevertheless, the fabrication and demonstration of laser-patterned MoS₂ devices starting from the metallic polymorph have not been demonstrated yet. Here, we study the effects of laser radiation on 1T/1T′-MoS₂ transistors with the prospect of driving an in situ phase transition to the 2H-polymorph through light exposure. We find that although the Raman peaks of 2H-MoS₂ become more prominent and the ones from the 1T/1T′ phase fade after the laser exposure, the semiconducting properties of the laser-patterned devices are not fully restored, and the laser treatment ultimately leads to the degradation of the transport channel.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.QN/Steele LabQN/van der Zant La
Fabrication of Stacked MoS 2 Bilayer with Weak Interlayer Coupling by Reduced Graphene Oxide Spacer
No full text© 2019, The Author(s). We fabricated the stacked bilayer molybdenum disulfide (MoS 2 ) by using reduced graphene oxide (rGO) as a spacer for increasing the optoelectronic properties of MoS 2 . The rGO can decrease the interlayer coupling between the stacked bilayer MoS 2 and retain the direct band gap property of MoS 2 . We observed a twofold enhancement of the photoluminescence intensity of the stacked MoS 2 bilayer. In the Raman scattering, we observed that the E 1 2g and A 1g modes of the stacked bilayer MoS 2 with rGO were further shifted compared to monolayer MoS 2 , which is due to the van der Waals (vdW) interaction and the strain effect between the MoS 2 and rGO layers. The findings of this study will expand the applicability of monolayer MoS 2 for high-performance optoelectronic devices by enhancing the optical properties using a vdW space
An evaluation of contralateral hand involvement in the operation of the Delft Self-Grasping Hand, an adjustable passive prosthesis.
No full textThe Delft Self-Grasping Hand is an adjustable passive prosthesis operated using the concept of tenodesis (where opening and closing of the hand is mechanically linked to the flexion and extension of the wrist). As a purely mechanical device that does not require harnessing, the Self-Grasping Hand offers a promising alternative to current prostheses. However, the contralateral hand is almost always required to operate the mechanism to release a grasp and is sometimes also used to help form the grasp; hence limiting the time it is available for other purposes. In this study we quantified the amount of time the contralateral hand was occupied with operating the Self-Grasping Hand, classified as either direct or indirect interaction, and investigated how these periods changed with practice. We studied 10 anatomically intact participants learning to use the Self-Grasping Hand fitted to a prosthesis simulator. The learning process involved 10 repeats of a feasible subset of the tasks in the Southampton Hand Assessment Procedure (SHAP). Video footage was analysed, and the time that the contralateral hand was engaged in grasping or releasing was calculated. Functionality scores increased for all participants, plateauing at an Index of Functionality of 33.5 after 5 SHAP attempts. Contralateral hand involvement reduced significantly from 6.47 (first 3 attempts) to 4.68 seconds (last three attempts), but as a proportion of total task time remained relatively steady (increasing from 29% to 32%). For 9/10 participants most of this time was supporting the initiation of grasps rather than releases. The reliance on direct or indirect interactions between the contralateral hand and the prosthesis varied between participants but appeared to remain relatively unchanged with practice. Future studies should consider evaluating the impact of reliance on the contralateral limb in day-to-day life and development of suitable training methods
Esprit '91. Proceedings of the annual Esprit conference. Brussels, 25-29 November 1991. EUR 13853 EN
No full textIl significato politico del mos maiorum in Cicerone
No full textThe author proves that the mos maiorum has a political value and highlights the evolution and crisis of this concept during the late Roman Republic. The mos maiorum is the ruling class’s foundation of power. The dominant political faction invokes the mos maiorum in order to legitimize its political authority. This faction is originally comprised of the patricii, who are later replaced by the patrician-plebeian nobilitas, in the half of the 4th century B. C. Finally, the power of an elite category of citizens, known as optimates, evoke the mos maiorum in order to legitimize their political power. The optimates embody the values of the ancestors. In the Late Roman Republic the mos maiorum is in great crisis. The moral degeneration linked to the crisis of the mos maiorum causes the political downfall of the res publica. The ruling class is principally responsible for the crisis of res publica; its absence of political unity is the essential reason for the downfall of the res publica. The evocation of the mos maiorum made by Cicero fails, because the res publica is not that of the time of the maiores, but it’s only a dim of the Rome of the ancestors
Of MOS and men: Bridging the gap between objective and subjective quality measurements in mobile TV
No full textIn this paper we explore the relation between subjective and objective measures of video quality. We computed objective MOS values from video clips using the video quality measuring tool VQM and compared it to the clips’ subjective Acceptability scores. Using the ITU defined mapping (M2G) from MOS to binary Good or Better (GoB) values, we compared the M2G translated values to the clips’ subjective Acceptability scores at various encoding bitrates (32-224kbps) and sizes (120x90, 168x126, 208x156 and 240x180). The results show that in the domain of mobile TV the ITU mapping M2G represents a serious overestimation of Acceptability. The mapping M2A, between MOS and Acceptability, that we suggest provides a significant improvement of 76% in the root mean square error (RMSE) over M2G. We show that Acceptability depended on more than just the visual quality and that both content type and size are essential to provide accurate estimates of Acceptability in the field of mobile TV. We illustrate this gain in Acceptability predictions for the popular content type football (soccer). In terms of RMSE our content dependent mapping (M2Af) yielded an improvement of 39% over M2A. Future research will validate the predictive power of our suggested mapping on other video material.Electrical Engineering, Mathematics and Computer Scienc
AC Conductance Curves on a Silicon MOS Device
No full textThe author presents elegant AC conductance curves on a p-Si (100) Metal-Oxide-Semiconductor (MOS) device through this brief communication. The curves were obtained on an automated AC conductance and I-V measurement system built by the author during the first Research Associate term from April 1997 to December 1999, with Professor of Physics, Dr. Mary Ellen Zvanut. She is with the Department of Physics at the University of Alabama at Birmingham (UAB), Birmingham, Alabama, USA
The Legal Value of Mos Maiorum in Cicero
No full textThe tradition is constituted by the norms of conduct of the gentes and the patrician familiae. The right is the foundation of the ruling class power of the patricians first, of the patrician-plebeian nobilitas then. The hegemony of the pontiffs in the juridical field is subsequently questioned by the iurisprudentia, starting from the 3rd century BC. We examine the legal value of mos and consuetudo as sources of law in Cicero. Afterwards, we evoke the crisis of tradition and the evolution of right caused by changing social and political conditions. The mos maiorum knows the maximum crisis in the late-Republican age. Cicero considers it necessary to implement a critical revision of the mos maiorum. However, the individualism present at the time of the author makes the moral and political rebirth of Rome impossible
- …
