Friday, June 18, 2010

10 Best Motivational Songs to Make You Roar.

So many times, it happens too fast, you change your passion for glory. Don't lose your grip on the dreams of the past.You must fight just to keep them alive. A collection of 10 best motivational songs which will drive you, motivate you and make you roar in your difficulties.

Remember: "All the Powers are within You. You can do anything  and everything. So stand up be strong, be bold and know that you are the creator of your own destiny." -Swami Vivekananda

1. Eyes Of The Tiger- Survivor
2. I've Got The Power- Snap
3. Chariots of Fire- Vangelis
4. It's My Life- Bon Jovi
5. The Final Countdown- Europe
6. We are the Champions- Queen
7. The Prayer- Celine Dion & Andrea Bocelli
8. We will Rock You- Queen
9. Affirmation- Savage Garden
10. Here I Am- Bryan Adams

Though it is not related to electronics but sometimes it requires more than knowledge to keep our moral high. I could not resist sharing these songs with you, as this songs are really close to my heart. Whenever I feel low I listen to the songs; to raise my inner self, conquer my challenges. I hope you will like this songs.

Wednesday, June 16, 2010

Changing Trends In Nanocircuits

Nanocircuits can be explained as a simple electrical circuit, at a dimension such that the quantum mechanical effects become important to be considered.  It's size ranges within 10-9 meters. The concept of nanocircuits arose when Intel's co-founder Gordon Moore suggested that the number of transistor that can be fabricated on a silicon integrated circuit will double every 18 to 24 months. More the number of transistors, more will be the speed of the computer.

But why should we worry about fabricating a transistor, can't we obtain a similar performance using resistors, capacitors or diodes?

The reason behind this is, transistors can act as a switch and can quickly turn on and turn off, regulating the flow of electricity. They can even amplify a signal ie; transforming a weak signal into strong signal. Most of the transistors we use in a circuit are silicon transistors. But opposite to this, when we are dealing with a nanocircuit silicon transistors cannot be used. It's because the silicon transistor of today are as small as allowed by the laws of physics and the resistivity of the circuit increases when the size shrinks to 30 nanometers.

So, it became a necessity for the Scientist and Engineers to device an alternate way if they wanted to add more functionality and reduce the size at nanoscale. So what they came up with, was a atomic scale wire made of carbon atoms and bonds. They named it Graphene (graphite+ene). Graphene is one atom thick  densely packed carbon atom bonds structured as a honeycomb crystal lattice. (See the above image) They are actually insulating materials but when the temperature is increased they act as conducting material.

Scientist are enthusiastic about graphene as the electrons meet with less resistance when they travel along graphene and also because they are faster and consume less power. Till now nobody knew how to produce graphene nanostructures on such a reproducible method. 

But recently some scientist claim that they have devised a simple one step process based on thermochemical nanolithography (TCNL) for creating nanowires from reduced graphene oxide.

Use of graphene interconnect could facilitate in integrated circuit performance once sizes drops to approximately 20nm. Also the high mobility of carriers in graphene could allow the fabrication of FETs with low channel resistance resulting in a high operational speed. The figure below shows a first ever logic gate and complementary inverter developed on graphene.


Tuesday, June 8, 2010

Apple's Solar Powered Touch Screen

To survive in this competitive world you need to explore new realms of technology, and "Apple" knows it very well. Today one of the major requirement is to cut down power required by a device or to use renewable energy sources.

Engineers from Apple have come up with a concept of Solar powered touch screen and they have filled a patent for the same. Though they have not released a solar powered gadget but their engineers see a wide potential in multitouch devices and believe to embed it in iPhone and iPad. Above is a diagrammatic representation of this concept where a solar cell is placed under a touch screen of hand held devices. 

The patent describes to use the parabolic reflectors as light channels to direct light to the solar cells underneath the touch screen. The solar panel will be designed such that it will absorb light from the top and also from the glass covering the back. But embedding a solar cell into a device and keeping it significant to gadget's cost is more challenging than stating a theory. In theory the solar cell will be able to use indoor lights rather than only direct sunlight. 


Friday, June 4, 2010

Smart Cars Communicating With Traffic Signal.

With the growing numbers of cars on the road, traffic is increasing at an enormous rate. Thus longer will be the time you will have to wait in the traffic signal. But consider a situation where your car need not have to wait, as every time you approach a signal it appears green. WOW! (that's what you will feel)

It's not a hypothetical thought, but with the blending between automotive and electronics industry many such smart cars are being produced. German car company AUDI has made a prototype named Travolution which can talk to traffic signals using LAN and UMTS links interrogating them about the color changing time.

The data sent by the signal is converted into graphics by the system. This then tells the driver what speed to adopt so that the next traffic changes to green before the car reaches it. In the same way if the car is waiting in the red signal the system will tell the driver how much time is left for light to turn green.

These Smart Cars Communicating With Traffic Signals will definitely help to save our time and most important, fuel consumption by 0.02 liter for every traffic signal stop. Though 0.02 may not look bigger but this small figure will help to reduce two million tons of CO2. A great life savior technology for our endangered Earth. What do you think about this technology? Do write to us.

Wednesday, June 2, 2010

Get Inspired.

Dear friends; if you dream of exploring the unknown path of technology but you are scared whether it is feasible or not then here is something inspiring.

Vivek Anand a 3rd year Information Technology student from Govt. Engg Collage Bikaner, and his three other group members had deviced a multi-touch screen technology "Sparsh" which can take 10 commands in a single go. See this video below before you continue reading.....

Back in the year 2008 Anand, and his collage mates Anirudh Sharma, Rahul Motiar and Sudanshu Gautam thought of developing a system which can make computer interaction simpler. They weren't sure of the outcome. But with firm determination, and devotion towards their work, they started the project. And now after two years of persistence their project paper is being published at ACM International Conference on Interactive Tabletops and Surfaces 2010 which will held at Germany.

The team also won the first prize in open hardware and best hardware project in IIT Kanpur. There it was also observed by NASA's scientist David Hanson. But their was more glory awating. The project won 20 awards which includes first prize from IIT Delhi, IIT Mumbai, BITS. It was even recommended at  Google Summer of Code.

The technology has a vast area of application including locating landmark, up-link information on cellphone, providing an enhanced multimedia experience, gaming, mapping etc. Riding high with confidence; these boys were also offered by an entrepreneur to put the technology in railway stations.

So, isn't it inspiring! Don't be pushed by your problems, be led by your dream. Because dreams are like the paints of a great artist. Your dreams are your paints, the world is your canvas. Believing, is the brush that converts your dreams into a masterpiece of reality....

Tuesday, June 1, 2010

Peering Into Reverse Engineering

Have you ever thought of buying an Ipad or Iphone and tear it down into pieces to peer inside its integrated circuits and processor. No! I know you are not that Einstein. But researchers form chipwork make it their business to find it out. They buy mobile phones, laptops and reverse engineer the hardware, ICs and derive the complete schematic diagram.

Actually the reverse engg. process has long been recognized in semiconductor industry. For example to get a piece of silicon from plastic package, is dipped into a beaker of acid. For ceramic and metal can packages different complicated process are followed. 

So what new reverse engineers found after tearing down Ipad was 16Gbyte memory powered by two Samsung K9LCG08U1M 8Gbyte flash Nand memories; and instead of  Texas Instrument's touch controller do all the touch screen controls as in Iphone 3G they used three- chips as their earlier version of Iphone 2G.

Image: Inside Apple Ipad a)Metal Layers b)Transistor details c)Circuit Layout.

But the most difficult portion is to peer into smaller and delicate designs. With the use of powerful electron microscopes like SEMs (scanning electron microscope) and TEMs (transmission electron microscope) magnification till atomic level is feasible. With the analysis of cross-section and planar section of the layers, images are merged in a software like ICwork and a schematic is obtained.

Image: Schematic obtained of Bootstrap Oscillator circuit from SmartMOS DC/DC converter

But a question still arises whether reverse engg. is legal. In US according to Semiconductor Chip protection act the technique is allowed for the purpose of teaching, analyzing and evaluating the concept. Similar law exists in European Union, Japan and other jurisdiction. But with the growing competitive intelligence people involved in patenting are evolving with new techniques and designs which are hard to debug and reverse engineer.