Arif Obaid

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Abstract. We present a fully implicit, monolithic finite element solution scheme to efficiently solve the governing set of differential algebraic equations of incompressible poroelastodynamics. Thereby, we proceed from a two-dimensional, biphasic, saturated porous medium model with intrinsically coupled and incompressible solid and fluid constituents. Our(More)
This paper presents a new efficient monolithic finite element solution scheme to treat the set of PDEs governing a two-dimensional, biphasic, saturated TPM model with intrinsically coupled and incompressible solid and fluid constituents for infinitesimal and large elastic deformation. Our approach, which inherits some of its techniques from CFD, is(More)
A low current front-end transimpedance amplifier (TIA) circuit for a high-speed light emitting diode (LED) and photodetector (PD) pair is presented. It mitigates PD capacitance effects by using a low input impedance buffer between the PD and the amplifier's input stage. Our simulation results show that a bandwidth in excess of 100 MHz can be reached for PD(More)
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