Next Generation 3D Holographic Displays

Figure : 3D Holographic Displays

The Hollywood film industry went to a whole new level after 3-D movies like James Cameron’s “Avatar” to the latest “Underworld Awakening”. The perspective of watching movies through a whole new dimension is believed to have brought movie fans closer to reality. But, people often complain about headaches and other eye problems after watching a movie continuously for 2 to 3 hours. But, due to the awesome movie effects, most companies are ignoring this problem and are introducing more and more 3D enabled gadgets like 3D televisions and smart phones. Smart phones like LG Optimus 3D and HTC evo 3D give us a glass free 3D effect using auto-stereoscopic technology. Even gadgets like these produce headaches and eye pain after constant viewing for hours. The case is same with the 3D smart TV or watching a 3D movie with glasses in a theater.

These problems can be overcome by the newly developed holographic displays. They produce a 3D display that can be viewed with ease, without pain in our eyes. The technology is in its early stage developments and hence only low quality holographic displays have been shown till now.

A group of researchers from a Belgian firm “Imec” have created a MEMS chip that can be used to make holographic displays. First a wafer of silicon is taken and a layer of silicon dioxide is grown on it. Then the silicon dioxide is etched away such that grid pixels of size 150 nm, which are shallower than the surrounding silicon dioxide layer, are formed. The entire grid is then topped with fine layer of reflective aluminum. Then a beam of laser light is made to fall in this wafer in an angle such that the light is interfaced with itself. Usually, the pixels are moved to make the illusion of image movement. Instead of this method, a chip covered with tiny MEMS is designed to easily create a moving holographic image. The MEMS is made to move up and down on the chip’s surface to produce the image.

If this technique is successful in making high quality holography then the problems associated with 3D viewing will be eliminated and we can get a comfortable 3D vision. This will surely pave way to watching 3D movies with ease.

Get Ready to Fire Laser From Your Body

: laser cell construction

Cyclops, a superhero from the famous comics “X men” has been the favorite of many people across the world. In the story, the character produces powerful laser beams by optical blast from his eyes. This fiction has become a reality by the joint efforts of Seok-Hyun Yun and Malte Gather, two physicists at Massachusetts General Hospital.

They were able to develop a technique by which laser can be produced from human cells. The device used to produce this laser consists of the same components that are used to produce a real time laser. That is, a pump source, an optical cavity and a gain medium. The pump source is used to produce the initial energy, the optical cavity to concentrate the energy, and the gain medium is a substance in which the electrons are exited until they go from a lower energy level to a higher energy level.

: microscopic view of laser cell

The researchers began experimenting on human kidney cells to produce green florescent proteins (GFP). This substance is known to produce luminance in jellyfish. Many steps were carried out to produce the laser. They began by placing the modified cell between two mirrors there by creating an optical cavity (a cell sandwich as called by researchers). Then a blue light pulse was passed through the cell and the light bounced between the mirrors, causing the cell to glow. When the cell was observed through a microscope, they saw that the cell was glowing with a spot of laser.

Researchers suggest that this laser is suitable for many medical applications. For the diagnosis of diseases, nowadays a laser beam is passed into the body to get images or to attack the disease causing cells. There might also be a time when the human cells can be illuminated as laser. The illuminated cells can gather more information about the interior of the human body by penetrating the damaged tissues more deeply. More research has to be done to realize this as laser needs an external light source to illuminate. Some say that this technology will be more useful in gaining information about individual cell characteristics than medical applications as the laser needs an external light source and it is difficult to produce it inside human body. Yen suggests that by integrating a nano scale cavity to laser cell we can produce a cell that will illuminate itself without any external source. Let’s hope that this technology will come into reality in the near future itself – who doesn’t want to shoot a laser from our own body!!

Attributes : Circuits today

Points to remember while preparing for GATE

Points to remember while preparing for GATE 2012

Systematic preparation is only the way to qualify the GATE 2012 and all public sector exams. Following these suggestion for success in GATE and public sector exams.

1. Bring previous year GATE exam question papers (gate exam questions are available very easily in the market).
2. Start back study (i.e. pick up GATE questions and find the solution) I personally believe if you practice to solve all the gate questions from the previous asked (at least 6-8 year) you can definitely qualify the gate exam.
3. Another important fact is: do not answer wrong during the gate examination even your total score is only 35 to 45 % (mostly people could not qualify gate exam because they attempt to answer wrong question).
4. Keep in mind, most of the time negative marking is only responsible to the failure.
5. Join some Gate exam discussion and online sharing forum and discuss your doubts and get touch with Gate Aspirants.
I hope if you follow all these suggestion you will definitely qualify GATE exam.

Improve UR marks :-

To Improve Ur marks a few suggestions and my experience to share with u

Hello students,

It is very easy to get good marks in jntu exams, only when you know how..

Firstly, Don't think that you can pass the exams by repeating the question papers or filling the additional with some idiotic stuff.. It is wrong.. please leave this misconception, It wont take you anywhere..

Impress the examiner with your handwriting and beginning (It is not mandatory to have a beautiful handwriting, but at least have a hand writing that everyone understands),

Next, show him that you have got some interest in giving the exam and that you have stuff in your brain by writing stuff from textbooks.. Don't write your exams for the sake of anyone, write them to prove your capability..

Never follow All in one answers, examiners have enough brains to find out where your answers come from.. so, at least try to draw diagrams and tabular columns from textbooks.because they have the sample scripts in which stuff is gathered from prescribed text books but in all in one some matter is in there passion due to copy rights.

Use all in one when you wont find the topics in textbook, try to find out answers to all the questions in all in one from text books.., there is no guarantee for all in one answers , follow it at your own risk..

Concentrate on the chapters that are easy for you, but if you have not studied anything till today, then try learning the units with less content.. I mean units with less topics..

Important point :-

Almost all examiners come to evaluate scripts for the sake of money, they get 12/- per script, each bundle contains 40 scripts, so examiner's concentration is to complete the bundles in the minimum possible time, your answer script is glanced hardly for a minute, so draw his attention towards the related equations, related diagrams and related side headings or putting result in a box.

*If you are asked to solve a problem and you have got no idea about it, then at least write the given data, what to find, diagram you might be lucky enough to get 50% marks..

*Revision is very important.. don't forget to revise everything you read, if not everything then at least the diagrams and equations..

* never leave any question, you are asked to write five questions try to write five, If you know only three answers then try to write stuff related to the asked question for the remaining two answers.. In this case, If you write the first three answers from text book, there are more chances of getting good marks as the examiner will be in an impression that you are smart, thats the reason I asked you earlier to read from textbooks..

**Do you find it difficult to revise for exams when you have so many subjects and things to remember? If the answer is yes, then you are not alone!

These tips should help.

1. Find out the exact dates of your exams. You will know how much time you have left before each exam. It might help to draw up a table which includes all your subjects and all the weeks you have until the last exam, and then fill in the exam dates.

2. Prioritise your subjects. If you think you have most to do in networks or that is your weakest subject then this will be top priority. Put all your subjects in an order from most to least important.

3. Decide on a revision plan which will work for you. How many hours do you need to do of a night? Do you have other commitments you can't get out of? Leave some time for breaks,meals and free time but ensure you have a good time slot each night for revision.

4. Fill in your revision timetable in with your subjects, and use your priority list to give the most important ones more revision time.

5. Stick to this timetable! speaking from my experience, if you decide to focus solely on one or two subjects because you think you know the others, you will get a nasty shock. Don't ignore any of the subjects, but ensure you have a balance where your priority subjects have the lead.

6. Begin by revising all the material which you don't know as well. There is no point in beginning to revise the transistors in electonics if you are pretty confident in it. You may find that also prioritising each individual subjects modules or topics helps you. Therefore if you run out of time you will know that you have definitely revised the hardest stuff!

7. Actually attempt to remember the material. It sounds stupid but most of the time people are tempted to spend all their revision time just reading or writing and assume that they know it all. Never assume; If you assume you know it without actually testing yourself on it then you might get a shock in the exam...

Never give up - easier said than done.. right, but giving up only makes you more of a failure when you don't get the marks you wanted for your exam. You will always have the guilt of knowing you didn't try your hardest.

Everyone learns differently; you just have to discover how is the best way for you. But in the end it all comes down to testing yourself, so you can be sure you know it!

You may not achieve the marks you expected. Know in yourself what you are capable of achieving so you don't set your targets too high. Don't settle for lower marks than your ability either though, just know your ability and do your best.

• Never compare yourself to your friends. They are not you. we are all different. Just do your best and be happy with that.

Have faith in yourself and do your best, you will definitely you succeed with flying colours..

Video Lectures

NPTEL provides E-learning through online Web and Video courses in Engineering, Science and humanities streams. The mission of NPTEL is to enhance the quality of Engineering education in the country by providing free online courseware.

ONLINE VIDEO LECTURES ARE AVAILABLE AT

National Programme on Technology Enhanced Learning (NPTEL)

Madras IIT associated Site : http://nptel.iitm.ac.in/index.php

Kanpur IIT associated site : http://nptel.iitk.ac.in/index.php

Note :- ** all the data is gathered from http://nptel.iitm.ac.in/ If any discrepancies regarding data are not entertained and
we are not pirating the content and not using the content for the personal benefits

Activity club : Students from the Department of Electronics and Communication Engineering under their association of HUNT, had conducted electronic circuit exhibition named E –SPARX on 09/01/2012.

The function was inaugurated by the beloved principal Dr. P. Bala Krishna Prasad in the ECE department labs. The students of IV, III, II year ECE have participated in developing the innovative electronic circuit applications u

seful in our daily life. The exhibition was

highly successful and appreciated by all the dignitaries. Principal Dr. P. Bala Krishna Prasad appreciated the HOD and all the staff mem

bers for their intellectual support to the students. He said that the ideas and the work done by the students were very innovative and inspiring. These types of exhibitions have to be conducted every year to improve the knowledge in students. The participating students are very happy for the way the exhibits have developed and helped by the HOD and staff. They said that they learned new things in electronics and gained valuable experience such as marketing, study of various electronic components and their respective applications. They appreciated the help of ECE HOD for his great h

elp in research part of the topics.

Click here to view Details :- CLICK HERE ....

Inauguration of Second Innovative event in e-sparx by

the Beloved Principal Dr. P. Bala Krishna Prasad

A Warm Welcome to the Principal by

HoD of ECE Dept. Prof. S. Jagan Mohan Rao

The application Circuit namely ”Automatic Level Crossing Using Micro Controller”

by Mr. P. Raghunandan (08ME1A0440)

Mr. Srinivasa Rao (08ME1A0441)

The application Circuit namely ”Cell Charger”

by Mr. B. Srikanth Deepak (10ME1A0408)

Mr. A. Uday (10ME1A0404)

The application Circuit namely ”Intelligent Electronic Switch”

by Ms. B.N.S.S. Sree Vidya (10ME1A0415)

Ms. A.S.N. Sirisha (10ME1A0406)

The application Circuit namely “Secret Mic Sound System”

by Ms. N. Spandana (09ME1A0487)

Ms. N. Mani Madhuri (09ME1A0488)

The application Circuit namely ”Automatic Street Light”

by Mr. B.V.S. Jagan Mohan (10ME1A0413)

Mr. A. Sree Shanmukh (10ME1A0405)

The application Circuit namely” LASER Based Intruder Alarm”

by Mr. K. veerendra (10ME1A0452)

Mr. D. Muddu Krishna (10ME1A0457)

The application Circuit namely” IR music transmitter & receiver”

by Mr. P. Deva harsha (09ME1A0499)

Mr. T. Raghuvaran (09ME1A04A7)

The application Circuit namely” Object Recognizing Electronic Switch”

by Mr. K.M. Ashok Kumar(10ME1A0440)

Mr. K. Ajay Kumar (10ME1A0449)

The application Circuit namely” Mobile Bug”

by Mr. G. Chandra sekhar (11ME5A0407)

Mr. S.Naveen (10ME1A0498)

The application Circuit namely “Power Flow Light Generator”

by Mr. B. Prasad (09ME1A0413)

Mr. B. Durga prasad (09ME1A0414)

The application Circuit namely”Open Door Recognizer”

by Mr. G. Raja chandra (09ME1A0436)

Mr. K. Naga sai (09ME1A0448)

The application Circuit namely”Obstacle Detector for Blind”

by Mr. Md. Imran Ahmad (08ME1A0431)

Mr. Y. Prudvi Bhaskar (08ME1A0460)

The application Circuit namely” IR remote switch”

by Mr. Sairam (10ME1A04B7)

Mr. Mahesh Babu (11ME5A0423)

The application Circuit namely”Object Presence Recognizer”

by Mr. Murali Krishna (10ME1A0442)

Mr. G. sai kumar (10ME1A0432)

The application Circuit namely” Water pump controller”

by Ms. G. Sasi Madhuri (09ME1A0437)

Ms. K. R.Mounica (09ME1A0458)

The application Circuit namely” Stress Skin Resistance Monitor”

by Ms. P. Priya darshini (09ME1A0493)

Ms. P. Naga bindhu (09ME1A0492)

The application Circuit namely” Air flow detector”

by Ms. T. Rukhmini Devi (09ME1A04B0)

Ms. S. Pushpa (09ME1A04A3)

The application Circuit namely” Highway traffic alerter”

by Ms. S. Sailaja (09ME1A04A2)

Ms. V. Swathi (10ME1A0414)

The application Circuit namely” Electronic Code Opener”

by Ms. H. Hima bindu (09ME1A0460)

Ms. K. Jyothi Kiranmai (09ME1A0441)

The application Circuit namely” IR Burglar detector”

by Ms. L. Vinuthna (10ME1A0454)

Ms. B. Kalyani (10ME1A0417)

The application Circuit namely” Shadow Sensor”

by Ms. Madhuri (10ME1A0477)

Ms. Valli padma (10ME1A0439)

The application Circuit namely” Led sand-glass timer clock”

by Ms. B. Sravya (10ME1A0419)

Ms. K. Bharathi (10ME1A0447)

The application Circuit namely” Automated Plant Irrigated System”

by Ms. V. Chandrika (10ME1A04B3)

Ms. V. Sai Rupa (10ME1A04A9)

The application Circuit namely” Rain Alarm”

by Mr. V. Chandrika (10ME1A04B3)

Mr. V. Sai Rupa (10ME1A04A9)

The application Circuit namely” DTMF Receiver”

by Mr. K.Yaswanth Guptha (09ME1A0458)

Mr. G.leela unni krishnan (09ME1A0430)

The application Circuit namely” Automatic morning alarm”

by Ms. Md.Suhana Begum (10ME1A0464)

Ms. K.Dey deepya (10ME1A0441)

The application Circuit namely” Variable timer for Music System”

by Ms. E. Anusha (09ME1A0427)

Ms. B.S. Tejaswani (09ME1A0415)

The application Circuit namely” Lie detector”

by Mr. S. Leeladhar (09ME1A04A1)

Mr. M. Ashok Kumar (09ME1A0469)

The application Circuit namely” Hit Switch”

by Mr. Md. Hafeez (10ME1A0461)

Mr. Althaf Jany (10ME1A0460)

2-2, 3-2 , 4-2 Online Bits

4-2 TEXT BOOKS

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