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Abstract: In this work double-gate pentacene TFT architecture is proposed and experimentally investigated. The devices are fabricated on a polyimide substrate based on a process that combines three levels of stencil lithography with standard photolithography. Similarly to the operation of a conventional double-gate silicon FET, the top-gate bias modulates the threshold voltage of the bottom-gate transistor and significantly improves the transistor sub-threshold swing and leakage current. Moreover, the double gate TFT shows good promise for the enhancement of I ON/I OFF, especially by the control of I OFF in devices with poor top interfaces. [Copyright &y& Elsevier]

Abstract: This paper proposes, the investigation of the Suspended Gate Field-Effect Transistor (SG-FET) small-slope switch based on a hybrid numerical simulation approach combining ANSYSTM Multiphysics and ISE-DESSISTM in a self-consistent system. The proposed numerical simulations uniquely enable the investigation of the behavior and the physics of complex micro-electro-mechanical/solid-state devices, such as the SG-FET. Abrupt switching as well as the effect of trapped charges in the gate dielectric are demonstrated. The numerical data serve to calibrate an analytical EKV-based SG-FET model, which is then used to design and originally simulate a sub-micron (90nm) scaled SG-FET complementary inverter. It is shown that, due to abrupt switching in the subthreshold region and electro-mechanical hysteresis, the SG-FET inverter could deliver a significant power saving (1–2 decades reduction of inverter peak current and practically no leakage power) compared to traditional CMOS inverter. [Copyright &y& Elsevier]

In this paper we present the impact of hot wire geometry and fluid characteristics on the efficiency of a hot wire to be used as a wall shear stress sensor. Finite differences and finite elements modelling based simulators were used in order to evaluate the thermal performances of hot wire wall shear stress sensor. Several structures were explored including simple conductor or suspended above a cavity (free and sealed with an oxide membrane). It is found out that wire length, wire section and the dimensions of the micro-cavity lying below the hot wire are of fundamental importance on the thermal exchanges occurring between the hot wire and the fluid. [Copyright &y& Elsevier]