The paper reports a new method for three-dimensional observation of the location of focused particle streams along both the depth and width of the channel cross-section in spiral inertial microfluidic systems. The results confirm that particles are focused near the top and bottom walls of the microchannel cross-section, revealing clear insights on the focusing and separation mechanism. Based on...

The paper proposes an adaptive fiber section discretization scheme for inelastic frame elements. uses cubature rules the efficient and accurate evaluation of response over elastic portion section. As strains arise penetrate into from edges, converts area under to a regular discretization. This approach offers considerable advantages computational efficiency large structural models with elements...

This project is a combined analytical and experimental activity to study warping deformation in shafts of non-circular cross section subjected to torsion. This is a supplemental activity for the junior level Mechanics of Materials course. The students see the warping in square sections and their pronounced effects in ductile materials such as aluminum when the stresses exceed the material yield...

When eccentric live loads are applied on the deck overhang of steel-box girder bridges, torsional moments, comprising pure and distortional moments generated box sections. The moment bridge girders distorts cross-sections, inducing additional normal stress components causing instability sections in severe cases. Hence, it is essential to install intermediate diaphragms minimize behaviors. Altho...

In anisotropic superconductors having an arbitrary orientation of the sample surface relative to the crystal principal axes, the surface critical field Hc3 is less than 1.695Hc2 unless the field is situated along one of the principal crystal planes. Below Hc3 in the vicinity of nucleation, the order parameter scales as AHc32H . Computational studies for infinite cylinders having rectangular cro...

This research quantitatively investigates fluid damping of MEMS and NEMS flexural resonators such as scanning probe and carbon nano-tube resonators, aiming to improve the quality factor prediction and therefore the resonator design. Fluid damping in beam-type resonators is most affected by resonant frequency, device dimensions and cross-sectional shape which are systematically examined within. ...

The probability that a randomly accelerated particle in two dimensions has not yet left a simply connected domain A after a time t decays as e−E0t for long times. The same quantity E0 also determines the confinement free energy per unit length ∆f = kBT E0 of a semiflexible polymer in a narrow cylindrical pore with cross section A. From simulations of a randomly accelerated particle we estimate ...

This study explores heat diffusion effects inmicro-channel heat sinks intended for electronic cooling applications. Detailed analytical models are constructed for heat sinks havingmicro-channels with rectangular, inverse trapezoidal, triangular, trapezoidal, anddiamond-shaped cross sections. Solutions are presented for both monolithic heat sinks and heat sinks with perfectly insulating cover pl...

The spring constant of an atomic force microscope cantilever is often needed for quantitative measurements. The calibration method of Sader et al. [Rev. Sci. Instrum. 70, 3967 (1999)] for a rectangular cantilever requires measurement of the resonant frequency and quality factor in fluid (typically air), and knowledge of its plan view dimensions. This intrinsically uses the hydrodynamic function...