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Make Functional Electronic Circuits on Paper Using Silver Ink Pen Posted: 04 Jul 2011 04:48 AM PDT We are used to making a closed conducting circuit diagram on PCB’s and Vera Boards. The same process can now be done by drawing on a paper with a silver coloured liquid metal ink.  This whole basic process has been named 3-D Handwriting by its inventors – researchers at the University of Illinois at Urbana-Champaign. The device consists of a normal looking pen in which an ink with conducting property is filled. This pen is then used to draw the closed electronic circuit on the paper. This circuit is then powered with the help of a battery. In the image shown below, an LED display with the university initials, UIUC was made through this method. A flexible array of colourful LED’s are mounted on a sheet of paper, where some interconnected lines are drawn between the LED’s with the help of silver ink.  The whole circuit is made conducting by connecting it to an external power.   LED Display Using Silver Ink Pen Researchers had to make a detailed study on making the property of the ink suitable for its purpose. The ink must have some characteristics like; it should stay as a liquid as long as it is kept...

Infrared Video of a Hovering NASA Lander Posted: 03 Jul 2011 10:23 PM PDT Infrared View of NASA Lander We have seen hovering space crafts and missile enabled drones in movies like Star Trek, Avatar, G.I Joe and so on. From these pictures it is clear that such machines can easily stay in the air at a fixed position, just above a few feet from Earth, for any amount of time. In real life, such machine applications are used as an extra utility in space vehicles. NASA deployed such machines to carry astronauts and heavy machineries from the spacecraft to the landing station. Though we have seen how the machine is in movies, in real life, it is very difficult to understand the actual movement of the hot air pressure created by the propellers, and the vortices it creates on the surface of water. To know more about its characteristics, NASA carried out some tests with a prototype lander that was made to fly as a hover up to 7 feet for exactly 27 seconds. The machine was designed to control its position for a fixed time along with its orientation and land with accuracy. The success of the experiment carried out is shown in the video below. From the video it is clear...

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