Cooler Gadgets using graphene film

To increase the efficient use of energy, decreasing the heating of electronic gadgets has been an area of research for last many years. Almost half of the energy of any gadgets like mobiles, tablets, computers, laptops etc. goes towards cooling of the device. Heating of the gadgets is a major problem faced by the industry while attempting to add more processing power to circuits and electronic equipments. 

Graphene has the ability to offer cooling effect to electronic systems that are based on silicon. Graphene, a single layer of carbon atom became the life changer in electronics industry. Researchers at Chalmers University of Technology, Sweden developed a solution towards significant heat reduction of circuits. According to the article published in journal of Advanced Materials the solution is based on a grapheme film.

The team of researchers led by Johan Liu reported exceptional outcomes while using grapheme film on electronic circuits based on silicon. They had earlier shown that graphene can have a cooling effect on silicon-based electronics, but the challenge was to stick a thick layer of graphene to silicon chips. They got the solution by creating a strong covalent (silane) bond between the surface and the grapheme film in a silicon based electronic component. Further the researchers could achieve 1600W/mK thermal conductivity levels with grapheme coating.

Liu added that with increase in thermal capacity, grapheme could find application in a number of new areas and an example of this could be the integration of a graphene based film into microelectronic systems and devices like LEDs or Light Emitting Diodes of higher levels of efficiency, and cooling of components for radio frequency and lasers.

Graphene-based film could also pave the way for faster, smaller, more energy efficient, sustainable high power electronics. With amazing applications of graphene, the wearables industry is also looking forward to many new technological applications of the wonder material in the near future.

WHAT IS A ROBOT ???

Now,We will be defining and understanding the exact meaning of robots and robotics. In general, it’s a good idea to define our terms at the beginning and be explicit as to what we are talking about. Unfortunately, there is no commonly, agreed definition of a robot.

"A reprogrammable, multifunctional manipulator designed to move material, parts, tools, or specialized devices through various programmed motions for the performance of a variety of tasks"

                                                                                                Robot Institute of America, 1979

This definition is rather dry and uninspiring for today’s definition of robots, which are capable of doing a lot more than a simple machine. Like all technology, robots can perform tasks which are idealization or extension of human capabilities. So the difficulty of defining robots stems from the fact that ideally we would like robots to be general purpose machines, capable of doing almost anything. This definition doesn’t put any limits to our imaginations and on what robots can achieve.

ADDITION AND SUBTRACTION OF Hexadecimal Numbers

ADDITION

START adding digits from right to left i.e. from LSB(Least significant digit) to MSB(Most significant digit)

•      If the result is less then 16 write the digit as it is
•      If the result is >=16 subtract 16 from it to get the digit and carry 1 to next digit    for e.g. Let's add C59A  and 68F1
  

SUBTRACTION

START subtracting digits from right to left i.e. from LSB(Least significant digit) to MSB(Most significant digit)

•      If the second digit is greater than first digit burrow 16 from preceding digit
•        for e.g. Let's add C59A  and 68F1  
  
  Try your self ADD DE67 and A63C then subtract........... Thank you.......