A new concentrator receiver containing a 7 mm X 7 mm 3J concentrator solar cell with a 37.4 % peak efficiency was developed. The receiver design includes a homogenizer, heat handling (epoxy lamination) technologies and a low resistance soldered connection and can be applied to various concentrator optics, including dish systems. The outdoor efficiency with a combination of a plastic Fresnel len...

In this paper we describe the design and verification of the concentrator of a Knockout ATM (Asynchronous Transfer Mode) switch fabric using the VIS tool. The Knockout is a popular ATM switch fabric which has application in both datagram and virtual circuit packet networks. The concentrator is the most difficult component in the Knockout ATM switch fabric. We developed an RTL structural design ...

OBJECTIVES To determine the level of oxygen cylinder use at which it becomes more cost effective to provide oxygen by concentrator at home in Northern Ireland, and to examine potential cost savings if cylinder use above this level had been replaced by concentrator in 1996. DESIGN Cost minimisation analysis. SETTING Area health boards in Northern Ireland. MAIN OUTCOME MEASURES Cost effecti...

High efficiency GaAs concentrator cells are useful for numerous applications requiring isolated power and voltage, or transmission of power without electromagnetic interference. This paper concerns the characteristics of GaAs concentrator cells illuminated by high-intensity laser beams. The objectives of this study are to identify and understand the mechanisms which limit the performance of GaA...

This project focuses on the development of a micro-organism concentrator. Pathogen detection, particularly MEMS based detection, is often limited by sample concentration. The proposed concentrator will interface with a pathogen detector. This type of pathogen concentrator can be useful for many kinds of applications including water purification systems, medical applications and biological warfa...

This report describes recent aspects of advanced inorganic materials for photovoltaics or solar cell applications. Specific materials examined will be high-efficiency silicon, gallium arsenide and related materials, and thin-film materials, particularly amorphous silicon and (polycrystalline) copper indium selenide. Some of the advanced concepts discussed include multijunction III-V (and thin-f...

Concentration and superconcentration operations play a central role in the constructions of nonblocking switching networks. This was established in a seminal effort by Bassalygo and Pinsker who showed that an n-input nonblocking switching network can be constructed with O(n log n) crosspoints if concentrators can be constructed with O(n) crosspoints. Starting with the pioneering work of Marguli...

Thermal metamaterials, designed by transformation thermodynamics are artificial structures that can actively control heat flux at a continuum scale. However, fabrication of them is very challenging because it requires a continuous change of thermal properties in materials, for one specific function. Herein, we introduce tunable thermal metamaterials that use the assembly of unit-cell thermal sh...

Packet concentrators are used in many highspeed computer communication systems such as fast packet switches. In these systems, the time available for concentration is very short. It is therefore desirable to realize the packet concentrators as hardware chips for fast concentration. The knockout concentrator was proposed for hardware realization. In this paper, we improve this concentrator to re...