The paper shows how the diffusive movement of ions through a channel protein can be described as a chemical reaction over an arbitrary shaped potential barrier. The result is simple and intuitive but without approximation beyond the electrodiffusion description of ion movement.

We introduce a model detector which registers the passage of a particle through the detector location, without substantially perturbing the particle wave function. (The exact time of passage is not determined in such measurements.) We then show that our detector can operate in a classically forbidden region and register particles passing through a certain point under a potential barrier. We sho...

The derivation by variational asymptotic homogenization of a 2D-continuum model describing large elastic planar deformations discrete bi-pantographic structure is presented. A rectangular specimen was additively manufactured and subjected to bias extension test for macroscopic strains up ca. 40%. the sample were measured via FE-based digital image correlation. Measured boundary conditions then ...

Integration of high-resolution nuclear magnetic resonance (NMR) spectroscopy with microfluidic lab-on-a-chip devices is challenging due to limited sensitivity and line broadening caused by magnetic susceptibility inhomogeneities. We present a novel double-stripline NMR probe head that accommodates planar microfluidic devices, and obtains the NMR spectrum from a rectangular sample chamber on the...

This article intends to revisit the electro-diffusional theory for wall shear stress measurement from mass transfer probes of rectangular shape by considering existence two components rate (i.e., axial and transversal). General analytical formulas effective length dimensionless transport coefficient were derived as a function parameters: angle flow direction, relative leading edge probe, aspect...

This paper proposes a rectangular array configuration of microstrip antennas combined with parabolic reflector for C-band satellite communications. The antenna operates in the frequency range 3.8–4.2 GHz. In particular, proposed is 2 × feed on system. It uses multilayer proximity coupling and coaxial probe techniques as feeding technique. fabricated at 3.8–4.4 GHz 12.1 dBi gain 4.148 Through si...

Dielectric Resonator Antennas (DRAs) have received increased interest in recent years for their potential applications in microwave and millimeter wave communication systems. DRAs are normally used with the support of a ground plane. The radiation and impedance properties therefore depend not only on their physical dimensions and dielectric properties, but also on the size of the ground plane. ...