We characterize the acceptance angles of small circular apertures for light collection by simulations and experimental measurements. By examining the full width half maximum acceptance angle as a function of the aperture size, we show that the acceptance angle of a circular aperture reaches a minimum of 67 deg before rebounding around the transition between single mode and multimode transmissio...

Kinematics and simulation study on a two-joint linear hypocycloid tail driving system composed of a special planetary gear system and a linkage mechanism are conducted in this paper. First, the composition and working principle of the linear hypocycloid tail transmission system are introduced and analyzed. Second, the kinematics study on the transmission mechanism is conducted with graphical me...

The paper describes the development of a computer program designed to simulate the performance of the mass filter in an ideal quadrupole mass spectrometer (QMS). The simulation program provides flexible input parameters to allow the user to investigate the ion trajectories and transmission efficiency for different operating conditions. The program is used to analyse the change in QMS resolution...

In this paper, we introduce a new panoramic movie system that can capture and play 360◦ viewing angle. The system captures surround movie by using four wide-angle video cameras, and then the video streams are encoded as a single stream of common video format. At the viewing side, geometric correction and image mosaicking are performed in real-time by using 3D graphics accelerators hardware. By ...

The advanced static VAR compensator (now widely known as the static condenser or STATCON) uses a high power self-commutating inverter to draw reactive current from a transmission line. Two fundamentally different types of invertor can be used for this purpose, one providing control of output voltage magnitude and phase angle, and the other having only phase angle control. For each of these type...

We report the experimental demonstration of a broadband negative refractive index obtained in a labyrinthine acoustic metamaterial structure. Two different approaches were employed to prove the metamaterial negative index nature: one-dimensional extractions of effective parameters from reflection and transmission measurements and two-dimensional prism-based measurements that convincingly show t...

We have evaluated the performance of strain-chirped fiber Bragg grating (FBG) based tunable dispersion compensator in a 40 Gb/s transmission link. In our proposed compensator, the value of dispersion could be changed from -353 ps/nm to -962 ps/nm by adjusting the rotation angle of the metal beam on which the FBG was mounted. In order to evaluate the effect of ripples in reflectivity and variati...

A designed surfactant-like peptide is shown, using a combination of cryogenic-transmission electron microscopy and small-angle X-ray scattering, to have remarkable pH-dependent self-assembly properties.

In this paper, we applied the circuit synthesis theory of filters to design transmission-type metasurface cells and arbitrarily designed amplitude phase transmission reflection by adjusting resonant frequency coupling coefficient. addition, successfully unit cell using conversion filter theory. Moreover, a refractive plate with novel structure that reacts both polarizations. The prototype opera...

We investigate the transmission characteristics of perfectly conducting two-dimensional wire grid polarizers fabricated in finite and infinite apertures using a rigorous spectral-domain mode-matching method. Specifically, the transmission coefficient for both transverse-electric and transverse-magnetic polarizations, extinction ratio, and diffraction pattern are characterized for a wide variety...