Wednesday 12 April 2017

Fuzz Fibers Can Take Rockets Heat

 Fuzz Fibers
Rocket engines of latest design have much vigor, and produces heat. Recently, NASA has made a joint effort in order to create some fibers for taking the heat of rockets.

The special fibers are manufactured with silicon carbide, which may be comparable to Velcro. They are able to resist the pressure, which is experienced by materials in many applications of aerospace. Such fibers give enough support to composite materials, which are often applied in the latest rocket engines with a capability of enduring high level of temperature. Ceramic materials, present in these rockets, make use of the fibers for toughening the system. However, at any time, brittleness or cracks may turn up, especially because of oxygen exposure.

Use of nanotubes along with fibers-

The researchers of Rice laboratory have implanted nanowires and tubes into fibers’ surface. The uncovered spots of these fibers have coiled design. They work almost as a hook to add value to Velcro. After making the experiment, the scientists have concluded that it leads to the development of powerful interlocking links with lots of knots of fibers. As a result, a composite has reduced level of cracking risk. Moreover, due to sealing, the chemical structure of fibers is not changed.

Amelia Hart, one of the students of Rice University, has stated that fuzzy fibers could be improved with the application of nanotubes (made of silicon carbide), which are interwoven with one another, while is placed inside composite. It also increases the resistance level and strength to endure intense heat.

A test on compression and friction confirmed about the force, which was essential for moving the nanotubes over one another. This force seemed to be quite higher than what is required for sliding the simple fibers or nanotubes. They could also pull through extreme compression, created with the help of nano-indenter. The indenters prevented breakdown for much extensive period.

The complete work has been explained in detail in one of the journals. It had been started, while Hart had met Meador, one of the researchers of NASA. Presently, Meador is a manager of nanotechnology program, while Hart was engaged in the study, related to carbon nanotubes development.

It had brought about a good partnership, which would increase the possibility of combining her thoughts with the engineer of NASA. A partial conversion of silicon carbides was accomplished. In fact, Hart had applied the skill for growing nanotubes to create fresh composite.

Tests on different fibers-

Hart along with other researchers blended the fiber in iron-based catalyst. After that, they applied a deposition of chemical vapor for inserting carbon nanotube system to a surface. It turned out to be the model of ultimate product. Then, these fibers had been heated under severe temperature.

 It is considered by researchers that the fibers would modify heat and light resistant silicon carbide strand. The later one is able to stay consistent to almost 1,600 C. It gives the scientists a confidence on the success that they would get by integrating nanotubes, made of silicon carbide.

Tuesday 11 April 2017

New Electron Microscope Sees More Than an Image

EMPAD
In the field of material science, electron microscope has lots of application as an effective device. It is usually known to all that this tool helps in viewing at an image. However, with the new enhancement done few days ago, this microscope has gained much more power. And it has been confirmed recently by some physicists at Cornell. The overall system is named as Electron Microscope Pixel Array Detector. It produces image along with some important data on the present electrons, which develop that image.

To give a clear idea about the microscope, Professor David Muller has said that it is possible to identify the tilts, polarity, rotations and magnetic or electric fields.

Manufacturer of the new microscope-

CTL department of Cornell University has accredited the innovation of new microscope to a prominent manufacturer, FEI. According to FEI, the design may be commercialized fully on the present year. In a periodical (Microscopy and Microanalysis) in 2016, the researchers have clarified the work in detail.

In another standard microscope, STEM, the researchers have observed that few electrons could be captured with the help of a specimen. The scanning is done from side to side to generate images. There is a detector at the base, and it interprets how the electrons are varying in their intensity.

EMPAD is intended for the replacement of a standard detecting system, and it is designed with specific pixels, which are sensitive to electrons. Every one hundred and fifty microns square are attached to a circuit, which warns signals with enough effectiveness in understanding signals. This technology is comparable to what you may find in contemporary camera. The major intention is the detection of angles or directions, where the electrons come out. Every electron usually does not strike at the same pixel.

Microscope with prompt working ability-

EMPAD has remarkable sensitivity and speed along with extensive intensities, tracked by it. It also detects each of the electrons and beams that contain almost millions of electrons. To explicate the phenomenon, Muller has commented that it is just like the act of capturing image of sunset, which displays surface details and everything about the shadows.

The advancement that has been done to the device is really unique and increases the excitements of scientists. Collection of all electrons that are in scattered condition develops the sensitive feature of the device. Moreover, it is also reduces the risk of damage and any negative effect on the living sample. EMPAD has power to track the frame of image within shortest time, and it identifies several electrons for every pixel and frame. In fact, it is multiple speedier than that of any traditional electron microscope.

Thus, the new microscope has brought a revolution in the domain of science. The scientists are now competent at examining the internal part of the cells. The research process has been backed up by Department of Energy in the United States and Cornell. STEM adaptation has also received support from Kavli center.

Innovative Software Convert Wi Fi Data into Energy Savings

UBC
The advancement of technology had begun since the arrival of human kind of Earth’s sphere. From the invention of knifes and spears to the creation of computers and tablets, man has managed to come a long way. It is a known fact that this technological advancement has been exceptionally brilliant in the past two centuries. Every day scientists around the world are striving to create something newer that is not only mind boggling but will also be useful to mankind.

High quality air with reduced energy consumption 

Recently in the University of British Columbia in Canada, a group of dedicated engineers have derived a way by which they could use Wi-Fi to establish number of building residents. By determining the number, they can easily adjust the ventilation through which they would be able to save energy without compromising on the air quality. Stefan Storey who holds a PhD in environmental studies and resource management and masters in mechanical engineering from UBC is leading the project. He remarked that thousands of tablets, laptops, and Smartphone are connected everyday to Wi-Fi through UBC. The Bridge Software incognito calculates the total number of Wi-Fi connected devices in every room. This anonymously calculated number is then passed on to the head building control system of UBC, which then regulates airflow through the buildings, in real time.

Based on this resident count, the control system can manage the airflow, ramping it for a crowded lecture, or bringing it down in other times. Storey collaborated with UBC for testing the effectiveness of this new technology at one of the busiest places, Irving K Barber Learning Centre, which is attended by thousands of staffs and students. It not only resulted in increased occupant comfort and goof air quality but also reduced energy expenditure by five perfect in 12 months.

Increased thermal comfort at a reduced rate 


UBC’s managing director, David Woodson remarked that this system can save over $100,000 in energy costs every year and would also assist the university in reducing greenhouse gas emission. UBC is considering this system to be the future of managing and better handling of energy consumption. The test conducted at the learning centre was highly successful and seeing the results of this ordeal, UBC is all set to install the technology in 8 to 10 more buildings within 5 months. Woodson also stated that this software uses Wi-Fi network, to reduce the disruption and lower the costs while offering thermal comfort and providing good air quality. He also stated that UBC Wi-Fi user’s private information is completely secured and protected as per the rules of Canadian privacy legislation.

Storey believes that this project emphasizes the prospective advantages of using Wi-Fi network to create smart buildings. With the support from UBC he also co founded Sensible Building Science, a company that helps staff entrepreneurs, faculty, alumni and students to lead their way through, from a basic idea to the market. Storey’s patent innovation is being set up at campuses around B.C. UBC is extremely happy about the success of this project and is thus is planning to expand their system to 10 more campuses.

Monday 10 April 2017

‘Machine Folk’ Music Shows the Creative Side of Artificial Intelligence

Magenta
Folk music is seen a direct link which connects us to our past and helping in cementing the cultural bond. When it comes to Artificial Intelligence it doesn’t possess any cultural heritage, bond or traditions but can we help Artificial Intelligence in building those attributes which defines the human intelligence at some levels. Over the years AI has grown by leap and bounds as it has been able to defeat the brightest human minds at Chess and even demonstrated breath-taking wordplay skills but can it create music or show us the creative side.

Artificial Intelligence on the rise

Researchers are trying to unlock the creative side of the Artificial Intelligence for quite some time. In 2016 a AI has been able to produce a piece of musical theatre which was premiered in the London. The effort is given towards broadening the boundaries of the creative research through new evolved AI techniques and utilizing the larger collection of the data. The Artificial Intelligence written musical piece has been a result of a thorough analysis of hundreds of other successful musicals.

Some of the prominent Artificial Intelligence project which aims towards bringing art and music out of the AI includes Sony’s Flow Machines, Google’s Magenta project and some projects under the British startup called Judedeck.

During the current study researchers has made use of the state of the art Artificial Intelligence techniques in order to educate Ai about the musical practice in the Celtic folk tradition. Traditional folk music was reduced into the form of music notation using ABC. In this method the music is denoted using the text characters as a rough guide for the musicians. Researchers have been successful in training the Artificial Intelligence for using as many as 23,000 ABC transcription of the folk music. This particular feat of transcription this amount of folk music was made possible with the active contribution of the people on the ‘the session.org’. During recent workshop researchers has asked the folk musician musicians to perform some of the songs composed by the machines.

The culmination of the artificial compositions and the human melodies

This particular Artificial Intelligence is trained to look at a single ABC symbol and predict what will come next and this helps in generating new tunes which appears to be like original compositions due to the use of existing patterns and structures. So far researchers have generated as many as 100,000 new folk tunes using Ai which is a remarkable feat in itself.

The structure of the folk music composed by the AI has two repeated part of similar eight-bar length and they complement each other quite musically. Secondly AI had also shown a great ability of repeating and varying the musical patterns which has always been the key characteristic of the Celtic music. AI has been able to understand as well learn all the rules set for the Celtic folk song compositions on its own though carefully analysing the patterns in the fed data within a very short time.

Nanoscopic Golden Springs Could Unravel Twisted Molecules

chirality
Molecular vibration is one of the known phenomena in the world of physics. Twisting of molecules is usually observed, while the present atoms of any molecule have periodic motion. In fact, many of the molecules are found to get twisted in a variety of ways. On the basis of their pattern of twisting, they are present in the right or left handed position. Such type of twisting is known as chirality. Recently, some scientists have determined that twisted molecules may be discovered with the help of nanoscopic golden colored springs.

Scientists from the University of Bath have collected gold spring-like coils in their experiment. They are more than five thousand times thinner, in compared to our hair strands. Another component, used by these researchers is the laser, which has allowed them to identify some twisted molecules. All these trials will perhaps bring about an improvement in the design of pharmaceutical matter, nanorobotics and telecommunications. Thus, the coils assist in knowing much data on chiral molecules. However, it is important to have a good idea on chirality and how it alters the behavior of molecules in any place, including our own body.

Chirality- What it is about?

The term, chirality has been extracted from a specific Greek word, which is related to a chiral object. Any system or object is considered as chiral, while it is distinguished from some mirror or reflective image. Chiral molecules consist of a carbon-based atom along with 4 non-identical components.

With the use of laser system, the researchers are able to work on all chiral molecules. This light becomes twisted at the time of travelling. However, their research turns out to be much tricky, while the molecular amount is much small. At this point, the tiny golden springs are much useful. Their design allows the lights to become twisted. It may also adjust to molecules in a better way. Thus, it becomes quite simple to make out the microscopic amounts.

Enhancement of pharmaceuticals through the use of nanoscopic springs-

There are some springs, which are much smaller in size, and the researchers have analyzed their effectiveness. They want to know whether these springs are able to increase the interactions of chiral particles and light. The research is based on the method for converting color. This process is called as the Second Harmonic Generation.

If a spring performs better, more amounts of red colored lights are transformed into the blue ones. From the experiment, the researchers have understood that there’re high potentials in their springs. However, the expected performance depends on the angle towards which they are directed. The system works as kaleidoscope, which involves deformation. The scientists want to reduce this distortion. And this is achievable only with the optimization of springs or in other words, chiral nanostructures.

A very close observation may lead to a development of purity and design of many pharmaceuticals. According to a member of the scientists’ team, it also helps in controlling motion of miniaturize elements in the future.