The Investigation of Metamaterials by Measuring the Power of Transmission in the Terahertz Regime

2012 ◽  
Vol 571 ◽  
pp. 133-136
Author(s):  
Jun Luo ◽  
Ying Chen ◽  
Sheng Wu Kang ◽  
Xin Yu Zhang ◽  
Chang Sheng Xie ◽  
...  

We present the design and fabrication of metamaterials, and investigated the power transmission properties of the metamaterials in the frequency ranging from 1.04THz to 4.25THz. The measured results reveal a global maximum transmission peak at 2.52THz. We compared measured power transmission performances of four types of metamaterials microstructures, and analyzed their transmission differences.

2011 ◽  
Vol 108 ◽  
pp. 67-73
Author(s):  
Ke Huang ◽  
Zhi Yong Liang ◽  
Li Ping Zhang ◽  
Le Lu

Contactless electrical energy transmission (CEET) system realizes power transmission with no electrical or physical connection by the perfect combination of inductive coupling technique and electronics. This paper studies the characteristics of the CEET system based on the loosely coupled transformer mathematical model, then analyses the power transmission performance and its changing rules in different compensation topologies. We can get the parameter requirements when the load obtains the maximum transmission power from these studies. This work can provide reference to optimize the circuit design and promote the power transmission ability for the CEET system.


2012 ◽  
Vol 249-250 ◽  
pp. 935-938
Author(s):  
Jun Luo ◽  
Ying Chen ◽  
Sheng Wu Kang ◽  
Xin Yu Zhang ◽  
Chang Sheng Xie ◽  
...  

We present the design and fabrication of metamaterials, and investigated the normalized power transmission properties of four metamaterials at different frequency in terahertz regime. We compared the power transmission performances of four types of metamaterials microstructures, and analyzed their transmission differences.


Author(s):  
M. S. Hoar

Throughout the world's automotive industry, a great deal of thought is currently being directed towards achieving power transmission layouts which are both compact and weight-saving and which achieve the desired distribution of vehicle weight. This trend is particularly noticeable in Europe, where success in the market place depends to a large extent on giving greatest passenger space for the customer's money. However, it was on a very non-European passenger car that a product was introduced which is now helping designers obtain maximum transmission compactness at minimum cost. The car was the Oldsmobile Toronado, and the product the Morse Hy-Vo® inverted tooth chain.


2008 ◽  
Vol 4 (1) ◽  
pp. 27-44 ◽  
Author(s):  
Attila Csatár ◽  
László Fenyvesi

The objective of the work reported here was to determine the influence of UV radiation and environmental temperature on the strength and rheological characteristics of multilayer agricultural packaging foils. The transmission properties of the experimental foils were tested in 286–363.5 nm range. The analysis of transmission properties of the foils showed that the maximum transmission was 10 % and 45 % with the experimental violet foils having 20 % and 5 % UV inhibitor in them, respectively. However, the transmission was higher than 80 % with the white foils of 5 % and 20 % inhibitor.The effect of the temperature on the tensile stress of commercial foils was investigated gated in the −20 ≤ T ≤ 50 °C temperature range. The measured relaxation curve was found to have a close correlation both for −10°C and 45°C with the calculated results. The highest reduced strength decreased as the function of the temperature according to the σ= −0,1861 T +19,107 [MPa] equation. Therefore, the probability of the break of the foils in cold weather is definitely higher than under warm weather conditions.


2012 ◽  
Vol 48 (18) ◽  
pp. 1142-1144 ◽  
Author(s):  
M. Rekas ◽  
H. Zimer ◽  
A. Tünnermann ◽  
T. Schreiber ◽  
S. Neuschaefer-Rube ◽  
...  

2015 ◽  
Vol 2015 ◽  
pp. 1-8
Author(s):  
Qiang Zhang ◽  
Xuan-Zhang Wang ◽  
Shu-Fang Fu ◽  
Jing Bai ◽  
Sheng Zhou

Magnetically recyclable materials should be ideal support in photocatalytic system because they permit the photocatalysts to be recovered rapidly and efficiently by applying an external magnetic field such as, MnF2. In this paper, MnF2and SiO2layers constitute a one-dimensional quasiperiodic photonic crystal according to Fibonacci. When the electromagnetic wave irradiates obliquely, the transmission peak moves to higher frequency direction with the angle increasing. Both the number of transmission peaks and the transmission peaks of double-forked structure increase with the increase of structural progression. We also found that the polarization of electromagnetic waves has influence on the transmission properties; TM wave transmission peak half wide is significantly greater than TE wave transmission peak half wide. The band gap near antiferromagnetic (AF) resonance frequency becomes narrow as the intensity of the applied static magnetic field increases. The as-prepared photonic crystal has tremendous potential practical use to eliminate organic pollutants from wastewater.


Author(s):  
M. Guebeli ◽  
J. D. Micklem ◽  
C. R. Burrows

Abstract A mathematical model of the power transmission through a Van Doorne steel belt continuously variable transmission is developed. The approach is based on a simplified viscous oil shear stress model. This enables the determination of the power transmission loss resulting from shearing the oil film along the traction line. The power to maintain the necessary hydraulic clamping forces is taken into account to optimise the power transmission efficiency. The analytical solution is evaluated numerically and compared with experimental results. Variations in the hydraulic pump displacement that is determined by the required ratio adjustment dynamics show that with a sufficiently small pump, peak efficiencies exceeding 97% are possible.


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