The vertical-cavity surface-emitting laser (VCSEL) is a type of semiconductor laser diode with laser beam emission perpendicular from the top surface, contrary to conventional edge-emitting semiconductor lasers (also in-plane lasers) which emit from surfaces formed by cleaving the individual chip out of a wafer.There are several advantages to producing VCSELs when compared with the production process of edge-emitting lasers. Edge-emitters cannot be tested until the end of the production process. If the edge-emitter does not work, whether due to ....etc

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I want some more details on the above topic including the powerpoint presentation(PPT).There is no ppt available on the internet about this vertical take-off and landing of aircraft.So i request you to send me the details.Thank you. ....etc

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In an information society, where the primary preoccupation in life is the generation, dissemination and management of information, there is an ever-increasing appetite for computing power and interconnection bandwidth. In the coming era of teraflop computing and multi terabyte storage, multiple processors and large data stores will be interconnected with up to terabit per second aggregate bandwidth over distance extending from just centimeters to hundreds of meters. VCSEL based optical interconnections can meet the speed, distance and density d ....etc

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Vertical Cavity surface Emission Lasers (VCSEL) are lasers that emit light from their surface in contrast with regular ???edge emittersâ„¢. Also they have got a vertical cavity , as the name suggests, which enables surface emission.???Vixels??? , as they are commonly called ,have several superior characteristics compared to their edge emitting counter parts.

VCSEL Semiconductor micro laser diodes which emit light perpendicular to their PN junction in a cylindrical beam vertically from the surface of a fabricated wafer and feature circul ....etc

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Presented By:
SuKyoung Lee*, Kotikalapudi Sriram  Kyungsoo Kim¡, JongHyup Lee*, YoonHyuk Kim¡, and Nada Golmie 

Abstract”
There are currently heterogeneous wireless access networks. A large variety of applications utilizing these networks will demand features such as real-time, high-availability and even instantaneous high-bandwidth in some cases. Therefore, it is imperative for network service providers to make the best possible use of the combined resources of available heterogeneous networks for connection su ....etc

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Vertical Take “ off and Landing
INTRODUCTION
Twenty years after ever jet flight took place, vertical takeoff and landing (VTOL) emerged as a concept, which was soon to be successfully implemented. Dr A.A Griffith, in 1941 who was then the chief engineer of Rolls Royce ltd. put forward this idea in his paper to the aeronautical research council. He proposed the idea of using small lift engines for lift only and not for normal flight. He claimed that there was great advantage in using a wing configuration and prop ....etc

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FABRICATION OF VERTICAL AXIS WIND TURBINE


INTRODUCTION
If the efficiency of a wind turbine is increased, then more power can be generated thus decreasing the need for expensive power generators that cause pollution. This would also reduce the cost of power for the common people. The wind is literally there for the taking and doesn't cost any money. Power can be generated and stored by a wind turbine with little or no pollution. If the efficiency of the common wind turbine is improved and widespread, the common people c ....etc

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Please sent the details of timbers found in Kerala and its use ....etc

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TIMBER MILL CONTROLLER
INTRODUCTION

Today world is looking for efficient and accurate mechanism to control industrial operations. Timber mill is such an industry. There heavy woods are placed on a platform on a rail to move it through the running saw. A worker will drive a steering to move the platform along the rail. The forward and reverse direction of the platform is depending on the direction of the steering. It is totally a mechanical and manpower ....etc

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plz send me d seminar on vertical take off. i will b very thankful 2 u ....etc

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