Ajaya Kumar Kavala
Research Scholar
Department of Physics
IIT Patna


Introduction of Dielectrics

Dielectric is an entity ,in which equal positive and negative charges separated by equal small distance.
In which each molecule has permanent dipole moment P
This type of materials are known as polar materials
Different molecules has different different directions of the dipole moment.
In Non polar materials ,The centre of the positive charge distribu ....etc

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ABSTRACT
To achieve desirable biomimetic motion, actuators must be able to reproduce the important features of natural
muscle such as power, stress, strain, speed of response, efficiency, and controllability. It is a mistake, however, to
consider muscle as only an energy output device. Muscle is multifunctional. In locomotion, muscle often acts as an
energy absorber, variable-stiffness suspension element, or position sensor, for example. Electroactive polymer
technologies based on the electric-field-induced deformation of polymer d ....etc

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presented by;
Ajaya Kumar Kavala


Technique for measuring the Dielectric constant using open ended coaxial cable in the microwave frequency region
Introduction of Dielectrics
• Dielectric is an entity ,in which equal positive and negative charges separated by equal small distance.
• In which each molecule has permanent dipole moment P
• This type of materials are known as polar materials
• Different molecules has different different directions of the dipole moment.
• In Non polar materials ,The ....etc

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I AM MISS NIBEDITA DOING ENGINEERING WANT TO KNOW ABOUT THE TOPIC DIELECTRIC RESONANT ANTENNA. I WANT THE ABSTRACT AND FULL REPORT FOR SEMINAR.

THANKING YOU
NIBEDITA ....etc

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MICROMECHANICAL RESONATORS AS TUNERS IN WIRELESS DEVICES
RAJKRISHNAN.R
S7B

OVERVIEW
INTRODUCTION TO MEMS
MEMS RESONATORS
ARCHITECTURE
ADVANTAGES AND DISADVANTAGES
FABRICATION
FUTURE SCOPE AND CONCLUSIONS
REFERENCES




1) INTRODUCTION TO MEMS
The technology of very small mechanical devices driven by electricity.
1 to 100 micrometers in size.
Large surface area to volume ratio of MEMS, surface effects dominate volume effects
MEMS could ....etc

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Presented By:
S.G. Lokhre, K. Virwanif , B. Gajananf , S.P. Pai, P.R. Apte

Solid State Electronics Department
Tata Institute of Fundamental Research
Homi Bhabha Road
Colaba, BOMBAY - 400 005, India

ABSTRACT

We have designed, fabricated and tested a balanced doubly suspended versatile, torsion and flexural, MEMS resonator structure. The doubly suspended structure has been used earlier for very precise high Q resonators but we wished to study the various vibration modes of such a structure. FEM analysis has been ....etc

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An antenna is defined by Oxford Dictionary as ? a usually metallic device for radiating or receiving radio waves ?. The IEEE Standard Definitions of terms for Antennas ( IEEE Std 145-1973) defines the antenna or aerial as ? a means for radiating or receiving radio waves ?. In other words the antenna is the transitional structure between free-space and a guiding device. The guiding device or transmission line may take the form of a coaxial line or a hollow pipe (wave guide) and it is used to transport electromagnetic energy from the transmitting ....etc

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The High frequency attenuation in shielded distribution cable has been extensively studied. But in the case of solid dielectric cable, this has not been done. A solid dielectric cable has a bit more complex structure including the semiconducting “bedding” layers and a moisture barrier.high frequency loss is created by these sources.The purpose of these bedding layers is to seal the cable against moisture ingress and also accomodate for the thermal expansion of the cable. The cables studied here are the ones with a corrugated copper sheat ....etc

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ABSTRACT

Low-k dielectrics are the very latest path breaking development in the field of Integrated Electronics. It is well on its way replacing the Al / SiO2 interconnects with the help of copper in CMOS fabrication of IC Chips. The CMOS technology has an in-built coupling capacitance which increases the time delay, thereby reducing associated processing speeds. This was compensated by reducing the thickness of the Al / SiO2 interconnects. There is a limit to the reduction in t ....etc

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An antenna is defined by Oxford Dictionary as “ a usually metallic device for radiating or receiving radio waves “. The IEEE Standard Definitions of terms for Antennas ( IEEE Std 145-1973) defines the antenna or aerial as “ a means for radiating or receiving radio waves ”. In other words the antenna is the transitional structure between free-space and a guiding device. The guiding device or transmission line may take the form of a coaxial line or a hollow pipe (wave guide) and it is used to transport electromagnetic energy from the tr ....etc

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