Dust acoustic waves are very low frequency modes associated with the dynamics of charged dust in a plasma. These waves have phase speed much smaller than the ion thermal speed and frequencies typically below the dust plasma frequency which can be on the order of hertz to hundreds of hertz for typical lab dusty plasma parameters. When the phase speed of the wave is much larger than the thermal s...

We present a method for the realization of radially and azimuthally polarized nonparaxial Bessel beams in a rigorous but simple manner. This result is achieved by using the concept of Hertz vector potential to generate exact vector solutions of Maxwell's equations from scalar Bessel beams. The scalar part of the Hertz potential is built by analogy with the paraxial case as a linear combination ...

The paper reports an experimental study of the adhesive contact between liquid-bridged hydrogel microparticles. A novel nanomechanical tester has been developed to measure both force-approach curves at sub-micro resolutions as well side-view images two agarose spheres during pull-off. Meanwhile, JKR theory extended quantify work adhesion solid-liquid-vapor interface and Young’s modulus particle...

Three-row roller slewing bearings are the core components of large-scale rotating equipment. It has a large structural size and is subjected to heavy loads, which requires extremely high carrying capacity. The effect finite element mesh on capacity accuracy three-row bearing investigated. A local model established analyze contact area between raceway, compared with Hertz theory verify reasonabl...

As the key connecting part of rigid flexible coupling manipulator, structural dynamic characteristics bolted joint are analyzed by using simulation technology pro/e and ANSYS. Based on spring equivalent principle, finite element model bolt is established, relationship equation between contact surface pressure preload derived, its stress state analyzed; micro convex deformation Hertz theory, tan...

Micro strip transmission lines are widely used, and for good reason. They are broadband in Trea hertz frequency. They provide circuits that are compact and light in weight. They are generally economical to produce since they are readily adaptable to hybrid and monolithic integrated circuit (IC) fabrication technologies at Tera Hertz frequencies. To better appreciate printed transmission lines a...

We observed robust coupling between the highand low-frequency bands of ongoing electrical activity in the human brain. In particular, the phase of the low-frequency theta (4 to 8 hertz) rhythm modulates power in the high gamma (80 to 150 hertz) band of the electrocorticogram, with stronger modulation occurring at higher theta amplitudes. Furthermore, different behavioral tasks evoke distinct pa...