A compact, electrically driven light source integrated on silicon is a key component for large-scale integration of electronic and photonic integrated circuits. Here we demonstrate electrically injected continuous-wave lasing in InP-based microdisk lasers coupled to a sub-micron silicon wire waveguide, fabricated through heterogeneous integration of InP on silicon-on-insulator (SOI). The InP-ba...

Multi-threshold CMOS (MTCMOS) technology is an effective sub-threshold leakage power reduction method in CMOS circuits, which satisfies high-performance and low-power design requirements. The optimization of virtual supply network plays an important role in MTCMOS low-power design. Existing low-power works are mainly on gate level, without any optimization on physical design level, which can le...

With CMOS scaling into the Sub-100nm regime, the supply and the threshold voltages need to be scaled proportionately. This necessitates addressing of low power CMOS device design issues. The idea of a Dynamic Threshold MOSFET (DTMOS), without the associated substrate loading effects, is a key to addressing the problems associated with device scaling for low power CMOS. This work focuses on the ...

Constant-current, four-thin-film-transistor (TFT) pixel electrode circuits, based on hydrogenated amorphous silicon (a-Si:H) TFT technology for active-matrix organic light-emitting displays (AM-OLEDs), have been designed, fabricated, and characterized. Experimental results indicate that continuous pixel electrode excitation can be achieved with these circuits. The pixel electrode circuits use a...

Let n binary numbers of length n be given. The Boolean function ``Multiple Product'' MPn asks for (some binary representation of ) the value of their product. It has been shown (K.-Y. Siu and V. Roychowdhury, On optimal depth threshold circuits for multiplication and related problems, SIAM J. Discrete Math. 7, 285 292 (1994)) that this function can be computed in polynomial-size threshold circu...

In his seminal paper on probabilistic Turing machines, Gill 13] asked whether the class PP is closed under intersection and union. We give a positive answer to this question. We also show that PP is closed under a variety of polynomial-time truth-table reductions. Consequences in complexity theory include the deenite collapse and (assuming P 6 = PP) separation of certain query hierarchies over ...

Understanding of the olfactory neural circuits has progressed beyond analysis of how odor information from the external environment is processed in the brain. While spatially-organized sub-circuits were found to exist up to the olfactory bulb (OB), the arrangement in the olfactory cortex (OC), especially in its representative piriform cortex (PC), appears diffuse and dispersed. An emerging view...

The goal of induced hierarchical verification techniques is to automatically create hierarchy in an originally flat circuit in order to decompose the verification problem (i.e., checking hazard-freedom and conformance to a specification) into that of verifying a set of smaller sub-circuits. Existing induced hierarchical verification techniques for speed-independent circuits are limited because ...

Background and Objectives: Digital signal processors are widely used in energy constrained applications in which battery lifetime is a critical concern. Accordingly, designing ultra-low-energy processors is a major concern. In this work and in the first step, we propose a sub-threshold DSP processor. Methods: As our baseline architecture, we use a modified version of an existing ultra-low-power...