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Wearable-flexible-Technology

How about elastic gadgets that one can wear? Sounds amazing right? It would be feasible in the near future.

Elastic technologies could make flexible garments and robotic components that human might wear to interact with computers and healing purposes in case of any health problems.

Rebecca Kramer, an assistant Professor of Mechanical Engineering at “Purdue University”, said that new techniques manufacturing such devices must be developed before making it  commercial. She further said that we want to create stretchable electronics that might be compatible with soft machines like the robots that we have seen in many science movies, when Hero pass through narrow and irregular spaces with ease with the help of tech wearable gadgets. This wearable stuff doesn’t restrict motion hence the person can move without any problem.

On an interview, she also said, “Conductors made from liquid metal can stretch and deform without breaking.” It’s worth noting that scientist have already made closely related components that we are using already commercially like flexible solar panels and computer accessories.

Recently a technique was developed, that focus making components by using a mixture of alloys in an inkjet printer. That means, it use liquid metal instead of ink and can be printed according to the need on a flexible fabric or elastic material.

The printing ink is made by dispersing the metal in a non-metallic solvent. This is done by the use of ultrasound. The sound breaks up metal into nanoparticle. The good news is that it is fully compatible with the inkjet printer. The nanoparticles thus rejoined by applying light pressure. This is crucial as the metal previously is coated with oxidized gallium and  acting as a skin,  preventing electrical conductivity.

The only drawback is, it’s fragile and breaks on applying pressure resulting into uniform flat film. Kramer said, “we can do this either by stamping or by dragging something across the surface, such as sharp edge of a silicon tip.”

published in “Science Daily”

A research paper about the method will appear on April 18 in the journal Advanced Materials. The paper generally introduces the method, called mechanically sintered gallium-indium nanoparticles, and describes research leading up to the project. It was authored by postdoctoral researcher John William Boley, graduate student Edward L. White and Kramer.

It would be astonishing to see how they are going to make I happen and we as a user be using it.

Camera telling object information
Image: Unispectral/Tel Aviv University

 

 

We have seen in many Science fiction movies when a character with its Hi-fi device scans an object and instantly get all he chemical and physical details of it.

We got curious many times about what an object is made of .The next thing we do is Google it, to satisfy the curiosity. But how would it be if you get such information just by clicking a picture and getting all the feedback for that object or thing you have captured by a mobile camera? It would be amazing, right? Well, you are going to get such things in the near future.

Electrical engineers from Tel Aviv University have invented such device that can be integrated with smart phone cameras. It is capable of detecting the chemical composition of an object or a substance like fluid by simply taking a picture or deciphering a video of it.

It uses Hyperspectral Imaging which is collecting and processing information from across the electromagnetic spectrum. Our satellite utilizes this technology to detect the nutrient and composition of soil in exo-planet. It’s worth noting that this type of imaging can be done with large sophisticated cameras but researchers say that, they have developed a new patented optical component. It can be integrated with the camera of a smartphone of a user.

They said that their optical component primarily based on microelectromechanical or MEMS Technology, relating to small mechanical machines having less than a millimeter in size .These miniature machines consists of primarily a microprocessor to process data, sensors and simple components.

They claim the device can be mass produced and is compatible with all the standard smartphone cameras available in the market. “We predict hyperspectral imaging will play a major role in consumer electronics, the automotive industry, biotechnology, and homeland security,” said lead inventor, David Mendlovic, in a press release.

This sounds easy in theory but they will need to pair up whole information collected from the image with a database containing immense information on the hyperspectral signature of a wide range of different chemicals.

Last month , at the Mobile world Congress in Bacelona, the basic system was demonstrated by the developers. Now they are working on a functional prototype. They say it would be ready by june this year.

One of the largest Indian Engineering group “Tata Group” is backing them with the funds. It would be interesting to see the marvel of Engineering.

Tell us what you think about it by commenting below.

ALSO READ: WIND ENERGY AND WIND FARM ENGINEERING PROJECT IDEA

Source : Science Alert

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Comes winter and we all go looking for mechanic to mend the water heater that has been shut down since last summer. Water gets so cold that you can not even think of touching the cold water let alone having to bathe with it. In this MAG tech news article we are going to tell you about a latest development in the field of engineering. Scientists have reportedly innovated a method to boil water faster. How much faster one may ask. well. less than trillionth of a second. No, its not a joke. Read on to find out about this amazing way to heat water faster.

Abstract:

Scientists from Hamburg centre for free electron laser science have devised an innovated way of boiling water in less than a trillionth of a second. This theoretical concept which has not yet demonstrated in practice is believed to heat the water near 600 Celsius in just a trillionth of second that is much less than proverbial blink of an eye. This technique would be the fastest water heating technique on planet earth.

Water being the universal solvent and single most important medium in which most of the chemical and biological process takes place has opened researchers mind to perform new experiment with heated samples of chemical or biological relevance. “Water is not just a passive solvent, but plays an important role in the dynamics of biological and chemical processes by stabilizing certain chemical compounds and enabling specific reactions” as explained by DESY scientists Dr.Oriol Vendrell from the center for free electron laser science CFEL.

READ: Stirling Engine Working and Principle

How the water boils?

A concentrated flash of tetrahertz radiation is the key to heat the water at super fast speed. It consists of the electromagnet waves having a frequency between infrared waves and radio waves. Tetra hertz flashes can be produced with devices called free electron laser that send accelerated electron on a well defined winding path. The electron particle emits an electromagnetic wave while passing through each turn adding up to an intense pulse like laser. The tetra hertz flash alters the strength of interaction (molecular force of interaction) between water molecules in a very short time which  immediately starts to vibrate violently .

The scientists have computed the interaction of tetra hertz flash with bulk water. At supercomputer center julich the simulation were performed and used a total of 200,000 hours of processor time by massively parallel computing. It is surprising as on single computing machine this would correspond to around 20 years of computation “We have calculated that it should be possible to heat up the liquid to about 600 degrees Celsius within just half a picoseconds, obtaining a transiently hot and structure less environment still at the density of the liquid, leaving all water molecules intact,” explains Vendrell

In one go with this method we can heat about one nanolitre (billionth of a litre) ,this sounds really small but is large enough for most of the experiments carried out by the scientists in small scale world. It is interesting to know that an ink jet printers fire droplets that are as small as a picolitre which is thousand times less than a nanolitre.  Here the idea is to heat-up the ‘solvent’ so that many molecules start the desired chemical process at the same time and then watch the reaction in successive steps.

The team of the researchers currently investigates how the concentrated pulse of tetrahertz radiation affects various types of molecules dissolved in water, from organic to biological systems. The reaction progress can be explored with ultra short X-ray flashes that will be produced by the 3.4km long X-ray free electron laser European XFEL (currently is being built between the DESY campus in Hamburg and the neighbouring town of Schenefeld)

Read: 

PYROELECTRICITY VS THERMOELECTRICITY VS FERROELECTRICITY

 Happy Mothers day sms wishes 2015

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In this MAG Tech News article we have discussed latest technology in Moon mission for energy production, a solution for energy need during moon missions. Scientists have been researching for a long time to generate electricity for the spacecrafts which is about to end soon. International collaborators and scientists form polytechnic university of Catalonia (Spain) have proposed a system of mirrors, processed moon soil and a heat engine to provide energy during lunar night. This will eliminate the need for batteries and nuclear power source such as those used by the Chinese rover that recently landed on moon.

It is quite astonishing that the night at moon lasts for around 14 days, during which the temperature falls to -150 degree celcious. This hurdles vehicle movements and attached equipments functioning on the moon’s surface. Transport of the heavy batteries form earth and using nuclear energy is not easy. Chinese rover YUTU or Jade rabbit (On Dec.14,2013 Mission was the first soft –landing on the moon since 1976) is a typical example. Researchers (from polytechnic college of Catalonia) and collaborators from USA have removed this problem. They studied and came up with two options for storing the energy during the day for using at night. The details have been published in the journal Acta Astronautica.

Richard Gonzalez, a physics researcher at polytechnic university of Catalonia and co-author of the study explains:

“the first system consists of modifying fragments of regolith (lunar soil), incorporating elements such as aluminium; for example, such that it becomes a thermal mass means mass storing heat for sometime as a reservoir” .when the sun rays hit the surface, a system of mirrors will reflect the light to heat the thermal mass which later transmit the heat to the rover and other lunar equipments at night.

The second system is similar to the previous one but incorporates a more complex and sophisticated series of mirrors and a heat engine. The mirrors are the Fresnel reflectors, those used in solar energy technologies on earth, which will heat the tubes filled with liquid. After heating the liquid will convert to gas which further heat up the thermal mass, afterwards the heat is transferred to the Stirling engine so as to produce electricity at night.

This system is better equipped with greater energy needs such as manned mission spending many nights on the moon.

Dolphin Like Sea Glider

We all have been heard many times in debates and discussions that global warming is responsible for the melting of polar ice. However this is not the only reason for the melting, the swirly eddy currents add to that. The findings are based on the information gathered by the Robotic ocean gliders.

The Findings

Ice sheets of west Antarctica are melting at a faster rate and it is predicted that if it continues with the present rate might raise the sea level by 3 meters. Scientists have been a close eye for many years on the warm water near the coast of west Antarctica and got into conclusion as one of the main reason for the melting of the ice. It remained a mystery for some time on how it is happening. Finally scientists have gathered some crucial information regarding ice melt.

How they got the information?under water dolphin glider

The obvious question that comes to mind is how the hell all the times scientists find the reasons and solids information for the concerned problems? Well, they do research simple.  This time they took help of three robotic gliders which look like the dolphins under the sea.

The gliders are 2 meters in length –around the size of a bottle –nosed dolphin. They were deployed deep down the ocean near Antarctica to measure the salinity and temperature. After two months of research they found that eddy currents, swirls of warm water are the reason, reaching the surface. This leads to the melting of the coastal ice.

Eddies current are actually the instabilities in a medium caused by certain factors. You can imagine eddies as circular motion of the liquid medium forming the whirlpool, a perfect example would swirl formed while mixing the sugar in a cup of tea by the use of spoon, Eddies facilitates mixing. Hence when we talk here about eddies current in ocean that means mixing of heat into ocean water efficiently.

Researchers used ships to gather ocean data in the past, the method being expensive having lots of constraints. However the gliders like this enhances the capabilities of taking ocean samples for much longer time. These battery powered bots are extremely energy efficient.

How Dolphin Gliders do it?

These gliders dive into the ocean like a dolphin. The batteries power a pump that pushes water into a specially designed compartment within the glider. It makes it heavier than the sea saline water making it to sink. When they it needs to come upon the surface, water is pumped into a bladder which is incorporated into the dolphin surface, making it more buoyant and causing to rise.

Each time when glider comes to the surface, it calls the researchers via mobile phone inbuilt device. This allows the researcher to find the dolphin and collect the information it has gathered from deep down the sea.

Further the team wants to adopt a more advanced sophisticated glider to study the Drake Passage. This is a patch of ocean between the southern tip of South America and Antarctica. This narrow stretch of ocean is known for its deep waters coming at the surface. And making it ideal to study the CO2 exchange between the ocean and the atmosphere.

The Project Idea which you can take out of it:-

Well there are lots of researches has to be done inside the ocean and day after day new things come up. You being the engineers can help these researchers by making some new kind of Drones with new sensors. You can make bots that can directly transmit the information in the real time even if the glider fails. As far as college Engineering project is considered, you can make a prototype of it by incorporating batteries and propeller into it.

In case you have money constraints, you can make static model showing areas in it for more advancements. We never know when we become a crucial inventor.

Finally it’s always important to share information with the mates. I would be pleased if you share it in various networking sites. Do comment if you feels like having a potential project idea and loved it.

 Light Weight Batteries using Super capacitors

Abstract:-

Cars running on electricity are mostly considered as the future for ecofriendly transport. Albeit they held back too by the fact that requires heavy bulgy batteries. The main limitation is in delivering the current at a slow rate. The top high end lithium ion batteries available in the market charge extremely slow and carrying huge weight.

 Solution to the constraint:-

electric car
electric car

A better alternative to it in terms of fast release of energy is using Capacitors- devices that releases energy in large bursts, though it counter a drawback of incapable of storing power for considerable time and for such a big vehicle.

However scientists are making efforts to combine batteries and super capacitors to make batteries more powerful and compact. Now scientists specialized in nano technology have created ultra-lightweight super capacitor. It can easily be integrated with normal batteries to dramatically boost their power with the decreased weight.

Super capacitor delivers a high power output in a short span of time. This means quick acceleration of the car and fast charging within few minutes in contrast to several hours for a standard battery of electric cars.

Additional Efforts:-

The team super-conductors are actually a sandwich of electrolyte between two strong sheets of extremely tough but light material “Graphene”. They are endeavoring to store more energy and finding ways to embedding them into car’s body, floor, bonnet, panels, roofs etc. because of ultrathin and lightweight capability. And use them to power a car vehicle for around 500km distance. More intriguing, a battery –free car made up of these parts would need to be charged mere a couple of minutes.

This can also be integrated to the back panel of the mobile phones to charge it extremely fast. The factors that ads up are they are cheap, and does not affects the environment One of the main reasons for high price of lithium batteries are that lithium element is high in prices.  This technique does not rely on materials that are toxic and faces disposal problems.

Final Note

So this was all about more efficient electric cars in terms of power carrying and less irritating drivers. Hope you liked the article and will be helpful to you. If you have any question or feels like sharing your opinion, remember there is a comment box below. Do comment and share your valuable ideas with us and other science buddies. I would be happy to answer you in case you have any query regarding this article.

Happy Mothers day 2015 messages

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Using an inkjet printer and creating sophisticated devices with small modification to the printer have amazed all the science buddies. We recently have come across the invention when some researchers have made electronic circuits by printer using metal as ink. Now it is the time to get enthralled again with this research when some Engineers uses inexpensive printer to produce microscopic structures that uses light in metal to carry information.optical fibres

Within such microstructure, this technology led to control electrical conductivity. This could be used to rapidly fabricate superfast components in electronic devices and making wireless technology faster or print magnetic materials.

What we know presently:-

Currently, all the science buddies know that high speed internet and other data transfer techniques are based on light which is transmitted via optical fibres. Optical fibres carry data with high band width of light. However when these fibres are shrunk into small spaces there is more space left for more optical fires accommodation and therefore more data transfer. But there occurs a limit, capability of a particular fibre decreases because light carrying data is squeezed into smaller spaces.  In contrast, electronic circuits can be designed at smaller sizes on silicon wafers though electronic data operates at lower bandwidth frequencies. This reduces the data amount carried by them.

The Research and findings:-

The recently technology fills the gap between optical and electronic data transfer and is called plasmonics. It involves crowding light into surfaces with far smaller dimensions than its wavelength. Data can be transferred with higher frequencies like terahertz frequencies. These terahertz frequencies lie between microwave and infra-red region of light spectrum including X-rays, visible light and gamma ray.

Metals like gold and silver are proving good plasmonic materials because they ameliorate this crowd effect. This plasmonic technology can create plasmonic devices which have the potential to make wireless devices work lightning fast speed. The Bluetooth presently operates at 2.4 gigahertz frequency can work 1000 times faster by using this plasmonic technology.

How & Why commercial Inkjet printer got involved?

Using the commercial inkjet printers with two cartridges filled with silver and carbon ink researches printed 10 different plasmonic structures having a periodic array of 2500 holes with varying sizes and spacing on a 2.5inches by 2.2 inches plastic sheet. The researchers could control the plasmonic arrays electrical conductivity by varying the amount of silver and carbon ink.

Using a mere 60 dollar inkjet printer they have developed a cheap and widely applicable method to produce plasmonic materials. With it we can draw and print the exact structures we want, without the million dollar instrumentation used to fabricate such type of structures. Let me tell you friends that, presently plasmonic arrays are created adopting micro-fabrication technique which is expensive and create one at a time.

They used terahertz imaging to measure the effect of printed plasmonic arrays of holes in a metal layer. It resulted in resonance which is machine the external frequency with the natural frequency of the material giving rise to peak amplitude. They observed that by varying the amount of carbon- silver ink could be vary transmission through this structure.

Advantages:-

These faster plasmonic arrays could prove applicable for:

— Wireless devices, because the arrays permits data to be transmitted much faster.

— Printing magnetic materials for greater functionality in myriad devices. This technology is more than five years away.

They used 2 type of ink and upto 4 can be used at a time depending upon the application. Technology has reached that far.

Now it’s your turn to get  some out of it and make all others mesmerized . I hope you all liked this article and would be beneficial in your science projects. Don’t remember to share it with your mates.

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bionic bird project for engineers

Bionic Bird Project for Engineering Students

Hello friends, your Engineer buddy, have brought you a new project idea for your engineering projects. Today’s idea is world’s first furtive civilian drone. It’s a bionic bird.

The unique characteristic of this bionic bird is that it flies not with the rotating wings like in helicopter drones but uses its wings like a bird in up and down motion to fly. The most interesting is it can fly in a group of the real bird without even making them realize that it’s unreal. This bionic bird like drone is shown attracting other bird and predators.

Following is the demonstration:-

 Construction and working

The bird’s body is constructed with high quality wear resistance foam. The wings are made of the carbon fibres for weight reduction and increased durability. It is incorporated with a Bluetooth 4.0 for communication via smartphone. Soon it would be controlled with an android application too.

There is an on board battery which allows it fly for around 8 to 10 minutes and took 12 min to charge with the egg shaped charger. Presently it does not have too much practical applications but later version would have improvements such as inbuilt HD camera with live streaming, control with a wrist band, and hovering ability like a humming bird. This drone can be operated within a range of 100 meters.

Following is the video showing its internal gear system. The video represented  rotatory motion conversion to reciprocatory motion in  bionic bird.

It is sort of a good toy to play around for some time.

Hope you liked this article and you really loved the concept than don’t forget to share with your friends and amaze them with the bot.

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With advent of nano-technology, almost every product manufactured these days is becoming faster, lighter, smaller and yet smarter. Gone are the days when first computer was developed which could only carry out a set of arithmetic and logical calculations and still was the size of a large room. Now days we can easily carry on our palm top. Following the same path, scientists of Rice University have pioneered a magnetic pulse generator that can be operated on a table top. The device is named as RAMBO.

What is RAMBO?

RAMBO is short for the Rice Advanced Magnet with Broadband Optics. It is a pioneer of Rice university scientists who have invented this powerful magnetic pulse generator that allows scientists to test materials in high magnetic fields over a table top. The device is created in the Rice lab of physicist Junichiro Kono in collaboration with Hiroyuki Nojiri at the Institute for Materials Research at Tohoku University in Sendai, Japan. The Details about RAMBO appeared online recently in the American Institute of Physics journal Review of Scientific Instruments.

What RAMBO does | Advantages of RAMBO?

As the name suggests, it is an advanced magnet with Broadband optics. It has the ability to combine ultra-strong magnetic fields and very short and intense optical pulses (combination of two extreme conditions). This allows the researchers to literally see the samples inside the magnet unlike those monster magnets which use long optical fibers to access the samples. So researchers need not use those big room-sized machines to carry out their experiments. RAMBO allows researchers to run experiments based on spectroscopy in pulsed magnetic field of up to 30 Tesla.

RAMBO has windows through which laser beams can be sent to the sample to collect the data at close range.” Researchers can collect real-time, high-resolution data in a system that couples high magnetic fields and low temperatures with direct optical access to the magnet’s core”, Kono said.

A new experiment can be run in a 30-tesla field every 10 minutes as opposed to field generators which require long waiting hours to cool down after each experiment at large laboratories.

“High magnetic fields have been around for many years. Ultrafast spectroscopy has been around for many years. But this is the first combination of the two,” Kono said.

Working of RAMBO?

A sample plate is placed on a long sapphire cylinder which passes through the coil’s container and juts through one end of the magnet to place it directly at the centre of magnetic field.
The cylinder thus provides the direct window to the experiment; a port on other side of the coil container looks directly down upon the sample. For cooling, the coil is bathed in liquid nitrogen at around 80 kelvins. By adjusting the flow of liquid helium to the sapphire cylinder, the sample temperature can be controlled from about 10 K to room temperature.

According to Kono the campus is now able to do about 80 percent of the experiments that was done elsewhere and also there are many things that only we they do here, making it a unique system that doesn’t exist anywhere else in the world. Scientists working in different areas will now have to come up with new ideas just by knowing such a thing is possible.

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