Greenwood and Williamson in 1966 (GW) proposed a theory of elastic contact mechanics of rough surfaces which is today the foundation of many theories in tribology (friction, adhesion, thermal and electrical conductance, wear, etc.). However, the…
Papers in Computational Physics
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The phase diagram of holedoped copper oxides shows four different electronic phases existing at zero temperature. Familiar among these are the Mott insulator, hightransitiontemperature superconductor and metallic phases. A fourth phase, of…

The ability to predict the passive intestinal absorption of organic compounds can be a valuable tool in drug design. Although Lipinski's 'rule of 5' is commonly used for this purpose, it does not routinely give reliable results. An alternative 'rule…

BACKGROUND: With an influenza pandemic seemingly imminent, we constructed a model simulating the spread of influenza within the community, in order to test the impact of various interventions. METHODS: The model includes an individual level, in…

This paper presents an extremely lowvoltage operation and power efficient successiveapproximationregister (SAR) analogtodigital converter (ADC). Trilevel comparator is proposed to relax the speed requirement of the comparator and decrease the…

A 2 GHz fractionalN digital PLL with a single delay cell, noise shaping ΔΣ TDC is implemented in a 0.13µm CMOS. With a simple structure of Δ modulator followed by a charge pump integrator, a wide range TDC input is converted to ΔΣ modulated bit…

In the present work, a novel hybrid Eulercompressible vortex particle\nmethod\n\nis developed for 2D transonic rotorcraft applications. It is identi�ed\nthat the ad\n\nvantages and disadvantages of traditional gridbased…

A 3×3 prototype image sensor array consisting of 2µm diameter CMOS avalanche photodiodes with 3transistor NMOS pixel circuitry is integrated in a 90nm CMOS image sensor technology. The 5µm pixel pitch is the smallest achieved to date and is…

We use 3D discrete element method (DEM) to simulate dry granular flows of nonspherical particles. In our simulation code, nonspherical particles are represented by clusters of spheres for contact detection and for contactforce calculation. For…

A method is developed to take the eddy currents in lamination stacks into account with the finiteelement method using the threedimensional (3D) magnetic vector potential magnetodynamic formulation. It consists in converting the stacked…

Cosmogenic 10Be in riverborne quartz sand records a timeintegrated erosion rate representative of an entire drainage basin. When sequestered in a terrace of known age, paleoerosion rates may be recovered from the nuclide content of the terrace…

A threedimensional (3D) model based on the first principles of mass, momentum and energy was developed that numerically simulates the processes of static and forward smoldering in a porous packed bed of plant materials. The packed bed contains…

A new volume tracking method is introduced for tracking interfaces in threedimensional (3D) geometries partitioned with orthogonal hexahedra. The method approximates interface geometries as piecewise planar, and advects volumes in a single unsplit…

1Mb embedded STTMRAM macro using 45nm CMOS process includes two key design features; a dualvoltage row decoder with a charge sharing scheme for read operations and a sensing circuit with two equalizers and readdisturbancefree reference cells.…

The PCM memory chip demonstrates the key features for MLC on a relevant scale (256Mcells). Given its versatility in terms of programming pulse shape and timing, closed?loop algorithms, and the wide cell resistance range that the ADC can accommodate,…

A highly linear calibration free VCObased ADC uses a twolevel modulator to eliminate distortion caused by tuning nonlinearity of the VCO. The proposed architecture does not require a multilevel feedback DAC and eases antialiasing requirements.…

We describe a neural spikesorting processor that provides unsupervised clustering simultaneously for 16 channels. The use of a twostage clustering algorithm, noisetolerant distance metric, and selectively clocked highV<inf>T</inf> register…

The paper presents a compact Matlab implementation of a topology optimization code for compliance minimization of statically loaded structures. The total number of Matlab input lines is 99 including optimizer and Finite Element subroutine. The 99…

Factors that control differentiation of presynaptic and postsynaptic elements into excitatory or inhibitory synapses are poorly defined. Here we show that the postsynaptic density (PSD) proteins PSD95 and neuroligin1 (NLG) are critical for…

A new balancedforce algorithm is presented for modeling interfacial flow with surface tension. The algorithm is characterized by a pressurecorrection method with the interfaces represented by volume fractions. Within this flow algorithm, we devise…
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