Nanotechnology

Nanotechnology has made marvelous contributions in many diverse fields, ranging from computer science to medical science. This book describes all of them.


M. M. Publications


98 Pages

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English

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  • M. M. Publications   
  • 98 Pages   
  • 05 Mar 2015
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    FROM THE HOUSE OF MAGIC POT, THE WEEK. MANORAMA YEARBOOK. VANITHA & THE MAlAYAlA MANORAMA DAilY Nanomedicine Page 39 Nanobiotechnology . Page 48 A Promise for the Future "Why can't we write all the 24 volumes of the Encyclopedia Britannica on the head of a pin?" This question, raised by the great scientist Richard Feynman, became the cradle for a revolutionary read more..

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    M.M. Publications Ltd., P.B. No. 226, Kottayam, Kerala,lndia. Pin - 686 001. Phone: 0481 - 2563721 - 22, 23 Fax: ++91-481 - 2564393 E mail: subscription@mmp.in childrensdivision@mmp.in NEW DELHI: Malayala Manorama (0. Ltd., Andhra Vanitha Mandali Building, 2, Azad Bhavan Road, Indraprastha Estate, New Delhi - 110 002. Phone: 011- 23379718, 23379719, 23379720 MUMBAI: Malayala Manorama, read more..

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    What is nanotechnology? N anotechnology is a wonderful new technology in which scientists rearrange atoms and molecules of matter to nano specifications. Or, to put it differently, the use and control of tiny matter is called nanotech­ nology. The tiny matter is referred to as nanoparticles. These particles are measured in nanometres. Matter at the nanoscale has different read more..

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    Carbon Nanotube 6 What are the milestones in nanotechnology ? T he first important milestone in nanotechnology occurred in1985 with the invention of 'bucky-ball' or Carbon 60 molecule, by a group of scientists. In 1988, some scientists proved that it is possible to move atoms and molecules in a planned manner. The next important step was the invention of the carbon nanotube read more..

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    Richard F eynman Why is Richard Feynman associated with nanotechnology? R ichard Feynman was a Nobel Prize winner (1965) and a brilliant physicist. In 1959, he introduced the concept of nanotechnology when he gave a talk titleq 'There is Plenty of Room at the Bottom' in which he spoke of a day when things could be miniaturized so that huge amounts of information could read more..

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    8 Buckyball A Buckyba/ is better than football. What is a buckyball? A buckyball is a molecule called Buckminsterfullerene. It is made up of 60 carbon atoms formed in the shape of a hollow ball. The story of buckyballs begins in 1985 in the laboratory of British astronomer cum chemist Harold Kroto. Looking at 'red giant' stars billions of miles away, Kroto was puzzled read more..

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    Nanotube- Another View The Word Nanotechnology Prof. Norio Taniguchi of Japan coined the word 'nanotech­ nolgy' in 1974. A brilliant scientist, he was using m�chines which had toler­ ances in terms of a micrometre at that time. Nanotechnology Why was the invention of the carbon nanotube important ? A carbon nanotube is a giant molecule of carbon atoms which has a cylin­ read more..

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    10 Why have microscopes played an important role in the development of nanotechnology? N anoscientists need high-powered microscopes to see the surface features of nano particles. In fact, microscopes have played an important role in opening the door to modern nanotechnology. Beginning as early as the 1930s, scientists were able to see the nanoparticles using instruments like the read more..

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    Gerd Binnig Sumio lijima 'Carbon nanotube' was discovered in 1991 by Sumio lijima. His carbon nanotube was a one-atom thick sheet of graphite, rolled into a tube with a diameter of one nanometre. He won the inaugural 2008 Kavli Prize in Nanoscience for his discovery. Nanotechnology Heinrich Rohrer Why has the scanning tunnelling microscope helped the devel­ opment of read more..

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    12 Mr. Nano Eric Drexler is often described as "the founding father of nanotechnology". He was the first to publish a technical paper, and book on molecular nanotech­ nology. For this reason, he is also called Mr. Nano. The First AFM What is AFM? AFM stands for atomic force microscope. Gerd Binnig, Calvin Quate and Christoph Gerber invented the first atomic force read more..

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    Why is a nanomanipulator very useful? T he nanomanipulator system is used for working with objects on an extremely small scale. The nanomanipulator uses advanced computer graphics to display the scanned surface to the user. A robot arm enables the user to feel, and modify the surface. In short, this instrument provides a scientist with the ability to examine, and study read more..

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    How are nanoscale objects made? T wo approaches can be taken when making something at the nanoscale. They are known as the top down approach, and the bottom up approach. The top-down approach is like making a stone statue where you take a big piece of material, and carve or cut it until you have made the shape you want. It has been used to great effect to read more..

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    16 MEMS MEMS stands for microelectrome­ chanical systems. These are machines with moving parts that contain both electrical and mechanical parts. They are made with nanotechnology, and are thinner than a human hair. Self- assembly not worked here. What is self· assembly? S elf-aSSemblY is a process in which pre-existing components that are disorganized, interact with each other to read more..

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    The Magnified Image of Self­ assembled Super Molecular Chains What is positional assembly? P ositional assembly is a technique that has been suggested as a means to build objects, devices, and systems on a molecular scale using automated processes. Here, the components carry out the construction process by following programmed paths. It is a high precision form of self­ assembly. read more..

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    Which are the major nanomaterials? N anomaterials are chemical substances or materials that are manufactured and used at a very small scale - down to 10,000 times smaller than the diameter of a human hair. Nanomaterials have novel characteristics, such as increased strength, chemical reactivity or conductivity, compared to the same material without nanoscale features. Hundreds of read more..

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    DNA Chip Nanotechnology Medieval Wonder Nanotechnology is a modern phenomenon, but even in medieval times, nanoscale materials have been used like the gold and silver particles found in the stained glass windows of churches. When did the term 'nanoparticles' came to be in use? T he use and control of tiny matter is called nanotechnology. The tiny matter is referred to as read more..

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    Someone is producing nanoparticfes. What is the history of nanoparticles? S ince early times, humans have been producing carbon-based nanoparticles. The smoke and soot from the campfires of our ancestors contained nanoparticles that are today known as fullerenes and carbon nanotubes. Nanoparticles were used by artisans as far back as the ninth century in Mesopotamia for generating a read more..

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    Prey! In 2002, Michael Crichton wrote a book, 'Prey,' which features an artificial swarm of nanorobots. These nanorobots develop intelligence and threaten their human inventors. The book created quite a sensation. Nanotechnology Three Diamensional Illustration of Nanotubefromlnside. Why are nanoparticles of great scien­ tific interest? N anoparticles are important because they are a bridge read more..

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    What are nanocrystals? N anocrystals are particles so small that their width measures about 1/80,000 of the diameter of a single strand of hair. They are so light and so strong that NASA once said they theoretically could be used to build an elevator to the Moon. Nanocrystals are roughly spherical, and the size and shapes of these crystalline particles can be controlled. read more..

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    What are nanowires? N anowires are simply, very tiny wires. They are composed of metals such as silver, gold, or iron, or semiconductors such as silicon, zinc oxide, and germanium. Nanoparticles are used to create these little nanowires, which can have a diameter as small as a nanometre. Nanowires have an amazing length-to-width ratio. Engineers and scientists tend to work with read more..

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    24 This no no straw makes us proud. What are the applications of nanotechnology? N anotechnology plays an important role in various fields like medicine, agriculture, electronics, and engineering. In medicine, researchers are developing customized nanoparticles in the size of molecules that can deliver drugs directly to diseased cells in your body. Nanotechnology holds some answers for read more..

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    of food science, from how food is grown, to how it is packaged. Companies are developing nanomaterials that will make a difference, not only to the taste of food, but also in food safety. Nanotechnology is being used to reduce the cost of catalysts used in fuel cells and also in solar cells. Companies are currently developing batteries using nanomaterials. Nanotechnology may read more..

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    26 What is meant by nanoelectronics? N anoelectronics is an exciting field that is forecast to influence nearly every facet of our life. The term refers to the use of nanotechnology in electric components. The first half of the word 'nano,' refers to the size of something, especially something very small. �-� 'Electronics' may be defined I'm watching as the technological read more..

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    "Nanotechnology will be the future with nanoscience developing nanomaterials and devices." - Dr AP.J. Abdul Kalam Nanotechnology Why is molecular electronics an important branch of nanotech­ nology? M Olecular electronics is a branch of nanotech­ nology that uses single molecules, or nanoscale collections of single molecules, as electronic components. Conventional electronics have read more..

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    28 Beauty and Quality Nanotechnology also plays a role in the cosmetics industry. L'Oreal is a company that uses nanotech­ nology to transport active ingredients such as pure Vitamin E through the skin. Beagle Board Single board Computer (75mm) Which are some nanoelectronic devices? N anoelectronics is based on the application of nanotechnology in the field of electronic read more..

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    LED Nano LED is better .... Nanotechnology How have nanowires changed the future of LED displays? N anowires are structures with diameters in the range of tens of nanometres and lengths to the order of hundreds of nanometres to micrometres. By comparison, the diameter of a human hair is about 500 times larger than a 100 nanometre nanowire. Each : nanowi re acts basically read more..

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    Why was the invention of the millipede chip so Millipede Chip important? I n nanotechnology, the term millipede refers to a new approach to storing data at high speed and ultrahigh density. The interesting part is that millipede stores digital information in a completely different way from magnetic hard disks, optical disks, and transistor-based memory chips. It promises a data read more..

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    How Small! Your fingernails grow at the rate of one nanometre per second. This is about 1/25,000 diameter of a human hair. Highly Magnified Strand of Human Hair Nanote£hnology How can nanotechnology help to meet the growing demand for fuel? N anotechnology will bring significant benefits to the energy sector, especially to energy storage and solar energy. Improved materials read more..

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    could be produced cheaper, and the lifetime of solar cells or batteries for electric cars could be increased, all thanks to continued development of nanotechnology. We must remember that there's only one source of renewable energy that can provide all of the world's needs, and that is the Sun. In fact, enough sunlight falls on the Earth's surface in just a couple of read more..

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    As a result, the light stays as a narrow beam, and when pointed at something, this narrow beam makes a single point of light. All of the energy of the light stays in that one narrow beam, instead of spreading out like a flashlight. Quantum dots are tiny nanoc­ rystals that glow when stimulated by an external source, such as ultraviolet light. How many atoms are read more..

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    Look, this is my quantum computer! What is a quantum computer? Q uantu m computers are computers that harness the power of atoms and molecules to perform memory and processing tasks. Quantum computers are different from digital computers that are based on transistors. Whereas digital computers require data to be encoded 34 into binary digits or bits, quantum computation uses read more..

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    A High Tem perature Superconductor Levitating above a Magnet How is nanotechnology helpful in achieving super­ conductivity? C ertain materials- mainly, metals or ceramics­ show a complete absence of electrical resistance at low temperatures, and this phenomenon is known as superconductivity. If you send a current through a superconducting wire, it loses no energy to resistance. read more..

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    36 Blackout A science fiction show on TV shows how nanotechnology can be misused to cause a worldwide blackout. It is named 'Revolution' and is aired on the NBC TV channel in the USA. Be smart with this smart dust. What is 'smart dust' in nanotech­ nology? S mart dust is a concept that origi­ nated in the 1990s as a result of a research project of the US read more..

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    Nanorobot Nanotechnology What is the importance of nanoro­ botics? A nanorobot is a microscopic robot built with nanotechnology. These robots will be able to sense and adapt to external factors such as heat and light. They can be used for everything from repairing space satellites, to killing blood-borne pathogens and cancers. Nanorobotics is the technology of creating machines or read more..

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    How are nanorobots useful in medicine? N anorobots are so small that they actually interact on the same level as bacteria and viruses do. It is anticipated that they could be equipped with all sorts of tools and cameras in order to furnish more extensive information about the human body. Not only that, they can perform millions of useful tasks. Among these is the read more..

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    Nanotechnology What are the areas of applications of nanotechnology in nanomedicine? N anomedicine is the medical appli­ cation of nanotechnology and related research. Applied to medicine, nanorobots would be programmed for specific biological tasks, and injected into the blood in a solution to work on cancer celis, on viruses, and even for reversing the aging process. Established read more..

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    Hands up ... Are you a cancer cell? Why is nanotechnology a boon in cancer treatment? T he use of nanotechnology in cancer treatment offers some exciting possibil­ ities. Usually, we depend on surgery, chemotherapy, or radiation treatment to destroy cancer. Unfortunately, these treatments can carry serious side effects. With nanotechnology, targeted drug therapies are possible. If read more..

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    How can nanotechnology be useful to surgeons? T he role of nanotechnology in surgery is evident in the miniaturi­ zation of surgical tools. Experimental microrobots are already available, and being tested in live tissues. In the US, Rice University has made a significant invention named 'flesh welding'. Flesh welding is a new technology which can replace the old clumsy and read more..

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    42 Earlier, I was at a tissue engineer's lab as an assistant. Why is nanotechnology important in tissue engineering? T he idea of tissue engineering is to induce tissue regeneration of damaged tissues or organs by making use of the self-healing potential of the living body, or by providing biological substitutes. Nanomaterials can mimic surface properties of natural tissues. In read more..

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    Nanosponges Scientists are trying to develop 'nanosponges' that can absorb toxins, and remove them from the blood­ stream. Nanotechnology How is nanotechnology used in arthro­ scopes? A rthroscopes are pencil-sized devices that are used in surgeries. They have lights and cameras that enable surgeons to do surgeries with smaller incisions. Nanotechnology is helping to advance the use read more..

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    Why are neuroelectronic nano devices a boon to humanity? N euroelectronics is a new field that broadly relates to interfacing the neurons of the nervous system with electronic devices. Nanodevices can play an important role in this field by permitting computers to be linked to the nervous system. This can be done by building a molecular structure that will permit control and read more..

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    What are the limitations of neuroe­ lectronic nanodevices? N euroelectronic nanodevices have many advantages, but there are many limitations, too. To begin with, electrical fields and electromagnetic pulses can interfere with their working. Very thick insulation is needed to prevent electrons from leaking, and very thick wires are needed to prevent overheating. The wiring for these read more..

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    What is nanonephrology? N anonePhrOIOgy is a branch of nanomed­ icine and nanotechnology. It uses nanomate­ rials and nanodevices for the diagnosis, therapy, and management of diseases of the kidney. This branch of nanomedicine deals with the study of kidney protein structures at the atomic level, as well as nano-imaging approaches to study cellular processes in kidney cells. It read more..

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    This machine will repair your damaged cells ... ___ ----<"------ What are machines? cell repair O ur body's cells and organisms already perform extremely complex feats of repairing damaged cells and tissues naturally. They do this by using a variety of molecular machines machines constructed to molecular specifications- that nature has already placed in the body. Nanotechnology read more..

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    What is nanobiotechnology? N anobiotechnOIOgy is the mergerof biological research with various fields of nanotechnology such as nanodevices, nanoparticles, or unique nanoscale phenomena. The biological world that most of us experience, is typically on the 'macro' scale. Although molecular biologists have been working with nano-sized biomolecules for the last few decades, nanobiotechnology was read more..

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    Nanotechnology What are the major objectives of nanobio­ technology? T he most important objective of nanobiotechnology is the application of nanotools to medical and biological problems. Another primary objective is to develop new tools for this field. New nanotools are often made by refining the nanotools that are already being used. The imaging of native biomolecules, biological read more..

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    50 Which are the branches of science that come together in nanobiotechnology? N anobiotechnOIOgy sees several branches of science coming together. Most of the fundamentals of nanobio­ technology, as well as its devices, come from nanotechnology. However, photonics, chemistry, biology, biophysics, nano-medicine, and engineering also play an important role in this exciting new branch of read more..

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    How has nanobiotechnology proved useful in medicine? N anobiotechnOIOgy ' has great potential for advancing medical science, thereby improving health care practices around the world. It has proved of immense value in many cases, from treating symptoms to generating cures, and regenerating tissue. Nanobiotechnology techniques have helped three American patients who have received whole read more..

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    52 ram searching for my nanotools. , , All the written words of history could fit on a cube of material measuring just one-hundredth of an inch wide, if the words were written with atoms. " - Richard Feynman What are the major tools in nanobiotechnology? N anobiotechnolOgy relies on a variety of research methods, including experi­ mental tools. It combines the tools, read more..

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    Why is green nanotechnology important? G reen nanotechnology is the study of how nanotechnology can benefit the environment, such as by using less energy during the manufacturing process, the ability to recycle products after use, and using eco-friendly materials. It builds on the principles of green chemistry and green engineering, and focuses them through a new lens on the read more..

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    DNA Nanotechnology DNA nanotechnology deals with the design and manufacture of artificial nucleic acid structures for technological uses. The concept was first put forward by Nadrlan Seeman in the early 1980s, and the field began to attract widespread Interest In the early 2000s. large-scale commercial break­ throughs. Green nanotechnology can also influence the design of nanomaterials read more..

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    mising the ability of future genera­ tions to meet their own needs. The first goal of green nanotech­ nology is to produce nanomaterials and products without harming the environment or human health. The second goal is to produce nano-products that provide solutions to environmental problems. Green nanotechnology achieves these goals by using the existing principles of green read more..

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    56 Why will nanotechnology usher in a new industrial revolution? N anotechnology will make it possible to manufacture more and better consumer goods, like clothes that are not just wrinkle free and stain repellant, but also smart because they will have tiny electronic devices embedded in them. Similarly, car bumpers will become lighter, sunscreen will be more radiation resistant, read more..

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    I'm nanosalt ... Why do nano products have a great future in the food industry? N anoproducts can give a boost to the food industry at several levels. Nano-engineered materials can minimize carbon dioxide leakage out of carbonated beverages, or reduce oxygen inflow, moisture outflow, or the growth of bacteria in order to keep food fresher and safer, longer. Nanosensors built read more..

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    58 Cyborg The term 'cyborg' stands for 'cybernetic organism' which is anything that has both organic and mechanical parts. Right now, it refers to people who have electrical implants in their bodies. How can nanotechnology be helpful to housewives? N anotechnology can be a boon to housewives too. The most common use of nanote­ chnology in the household is cleaning products. read more..

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    Nanotechnology Why is nanotechnology important to the textile industry? T Oday, we already have clothes that are wrinkle free and stain repellant. Nanotechnology offers the textile industry many other advantages as well. Don't worry! I'm safe in this nano suit. Textiles with a nanotechno­ logical finish can be washed less frequently, and at lower tempera­ tures. More glamorous read more..

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    What are the uses of nanotechnology in the cosmetic industry? T he cosmetic industry has discovered that nanotechnology can help it in making better and safer products. In the cosmetic arena, it is believed that the smaller particles are more readily absorbed into the skin. One such example is the use of nanote­ chnology in sunscreens. Sunscreens regularly contain titanium read more..

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    What is the role of nanotechnology in sports? T he world of competitive sports is highly influenced by even minute changes in sports equipment, which could be a matter of winning or losing ... and this is where nanotechnology can be of help. Within the niche of sports equipment, nanotechnology offers a number of advantages and immense potential to improve sporting equipments read more..

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    Why is nanotechnology a boon to aerospace and vehicle manufacturing industries? T he aerospace industry is one of the most important heavy industries in the world, and nanotechnology will play an important role in its future. The main goal in current aerospace industry is the invention of lighter construction materials, and more efficient engines. Various nanomaterials have been read more..

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    What is the role of nanotech­ nology in the construction industry? N anotechnOlgy can make construction faster, cheaper and more efficient. Two nanoparticles that stand out in their application to construction materials are titanium dioxide, and carbon nanotubes. The former is being used for its ability to break down dirt, and then allow it to be washed off by rain water on read more..

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    64 Why is nanotechnology of great importance to the military? A ll major world powers are now investing and researching into the use of nanotechnology in the field of military. Nanofabrics are currently being researched for use in military camouflage. A development called 'active camouflage,' allows the wearer or object to blend into its surroundings. Tell MeWhy read more..

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    Nanoparticles can be injected into the material on soldiers' uniforms to not only make the material more durable, but also to protect soldiers from many different dangers such as high tempera­ tures, and impact of chemicals. Another important use for nanotechnology is for manufacturing sensors. Portable, efficient sensors will be highly valuable to military field operatives. How is read more..

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    How did you get this nanotech skin? self- changing camouflage. This is done by injecting mobile pigment nanoparticles into the uniform material. These mobile pigment particles would be able to change the colour of the uniforms, depending upon the area that the soldiers are in, to provide effective camouflage. In addition, nanotechnology can help to lower the infrared signature read more..

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    How can nanotechnology help in military communication? T he discovery of several new nanotech­ nology advancements has made military communication very sophisticated. Nanoparticles can be used to create coated polymer threads that can be woven into soldiers' uniforms. These polymer threads can be used as a means of communication between soldiers on the move. The threads in the read more..

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    How can medical surveil· lance using nanotech· nology help the armed forces? N anotechnology can help to put in place a medical surveillance system for soldiers. Soldiers can wear this system which would watch over their health and stress levels, and release drugs, or treat wounds, as the need arises. This system will admin­ ister painkillers in the case of trauma or read more..

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    How is nanotechnology important in agriculture? T he science of nanotechnology has a great future in the field of agriculture. This sector will benefit greatly from nanotech-based tools to detect diseases in a rapid manner, improve the ability of plants to absorb nutrients, and promote the molecular treatment of diseases. The implementation of nanotechnology in the form of small read more..

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    How can nanotechnology recycle agricultural waste? N anotechnOlOgy can help reduce agricultural waste and bring down pollution levels. For example, when cotton is processed, some of the fibres are discarded as waste, or used for low-value products such as cotton balls, yarns, and cotton batting. This waste can be trans­ formed by nanotechnology into nanofibres that can be used as read more..

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    How can nanotechnology agricultural growth? increase T he use of nanomaterials in agriculture can reduce cost and effort, increase efficiency, and lead to a better environment. Nanomaterials are becoming an increasingly important issue in agriculture, particularly as additives or agents in fertilizers, or plant protection products. In the case of pests or drought, nanotechnology makes it read more..

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    72 Why are nanobarcodes important? B ar codes have revolutionized how everyone from warehouse managers to pharmacists keep track of items. Nanobarcodes work much like conventional bar codes, except that they are microscopic rods, striped with bands of gold, silver, and other metals. Varying the width, number, and order of the stripes could generate thousands, if not hundreds of read more..

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    With nanobarcodes, though, thousands of different tags could be added to a sample at once. Scientists at Cornell University have produced microscopic probes or nanobar­ codes that could tag multiple pathogens in a farm which can easily be detected, using any fluorescent-based equipment. In the future, nanobarcodes will help researchers identify patterns of perhaps hundreds of read more..

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    What is nanofabrication? N anofabrication technology, also known as molecular manufacturing, cuts across many technological systems and industries, including microelectronic chip manufacturing, power semiconductors, micro-electrome­ chanical devices, information storage, computer displays, optoelectronics, pharma­ ceuticals, sensors, and biomedicine. It is the process of designing and creating devices on read more..

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    Why is nanotechnology more energy efficient for use in LEOs? L ight Emitting Diodes or LEOs, use much less energy than conventional lighting. An LED is a special kind of diode that glows when electricity passes through it. Most LEOs are made from a semi-conducting material called gallium arsenide phosphide. The best part about LED lights is that they don't release any heat, read more..

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    Dear, I 'm nano powered. No one can discharge me. What is the role of nanotechnology in the development of batteries? B atteries are devices which store electrical energy by converting it into chemical energy, to be released slowly at a later time. In rechargeable batteries, this chemical process is reversible, allowing the battery to be reused many times. Nanotechnology can read more..

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    Solar Panel Films in which Nanoparticles are incorporated Nanotechnology How can nanotechnology enhance the efficiency of solar energy production? T he power output of the sun that reaches the Earth could provide as much as 10,000 times more energy than the combined output of all the commercial power plants on the planet. However, today's commercial solar cells, usually made of read more..

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    78 Nanollthography Lithography Is a method of printing from a metal or stone surface. In this method, the areas to be printed are not raised as In usual printing, but II'i8de receptive to Ink, while the other areas repel Ink. Nanollthography is concerned with the study and appUcatIon of fabricating nanometrHcale structures. ) Hooray ..... this nanoshield will defend your read more..

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    Fullerenes Fullerenes are molecules composed entirely of carbon, in the form of a hollow sphere, ellipsoid, or tube. Fullerenes are highly stable chemically, and have a variety of unusual properties. The first fullerene was discovered in 1985 by Richard E. Smalley, Robert F. Curl Jr., and Harold W. Kroto. Nano Fuel Cell developed by Swedish Research Council What are the read more..

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    80 Breaking News! The latest, from the ever growing world of nanotechnology - copper wire that can collect electricity! Jayan Thomas, an Indian-born Assistant Professor in Florida University, US, along with his student Zenan Yu, has developed a copper wire which can act both as a conductor, and a battery! The copper wire has brush type nanowires on its surface. This helps read more..

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    Prof. CN.R. Rao Nanotechnology What is the status of nanotechnology in India? N anotechnology is being hailed as the next sunrise industry for India. The Department of Science and T echnologyoftheCentral Government has announced a national initiative in nanomaterials, while the Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore, has pioneered the study of nanotechnology read more..

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    Nanotechie's Favo.urite Car ... ............ , .......... ,\ I..C····.·.!.· ... : \ L.\ "'/'\ Which are the main agencies in India that are engaged in nanotechnology? I ndia has several key agencies in the field of nanotechnology, the chief of which is the Department of Science and Technology, also referred to as DST. India's principal programmme in this area is the read more..

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    Dr. Meyyappan Nanotechnology Why is Dr. Meyyappan one of the leaders in the field of nanotechnology? D r. Meyyappan has been at the cutting edge of research in nanotechnology for many years. An Indian by birth, he earned a bachelor's degree in technology and chemical engineering at the Regional Engineering College of Madras University in Trichy, India. Later, he moved to the read more..

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    Why is Dr. Minoo Dastoor considered one of the luminaries in this field? D r. Minoo N. Dastoor was born in Mumbai, India. He immigrated to the US in 1962, and received an M.S. in Polymer Chemistry and a Ph.D. in Medical Microbiology and Immunology later. Dr. Dastoor joined the Jet Propulsion Laboratory in 1977. In 1989, he assumed responsibility as a Manager for read more..

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    • • Dr. Deepak Srivastava What is the role of Dr. Oeepak Srivastava at NASA? D r. Deepak Srivastava is a Senior Scientist and Technical Leader of Computa­ tional Nanotechnology Investigation at NASA Ames Research Center. Dr. Srivastava has more than ten years of experience in large scale modeling and simulations of nanomaterials, processes, and applications. Over the past ten read more..

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    Dr. Pulickal Ajayan 86 Why is Dr. Pulickal Ajayan famous? A pioneer in nanotechnology, Dr. Ajayan has been one of the key figures in the development of carbon nanotube technologies. His early education was in Kerala, India. He earned his B. Tech in metal­ lurgical engineering from Banaras Hindu University, and Ph.D. in materials science and engineering from Northwestern read more..

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    What are the advantages and disadvantages of nanotech­ nology for commerce? N anotechnology has been heralded as a 'revolution' in science, for two reasons: first, because of its revolutionary view of the way in which chemicals and elements, such as gold and silver, behave, compared to traditional scien­ tific understanding of their properties. Second, the impact of these new read more..

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    It is true that nanotechnology is an exciting new field opening up vast possibilities in different areas, but it also poses several problems as far as commerce is concerned. Diamonds will become cheaper, causing a market crash in this commodity Advances in nanotechnology can develop alternate sources of energy, and this will lower the cost of oil, causing a worldwide market read more..

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    Why does nanotechnology pose several threats? T iny nanomaterials are hidden in many of the products we use every day. Nanoscale materials dissolve in different ways, take on different magnetic properties, react differently to chemicals, or reflect light differently from the way they would at normal size. The very qualities that make nanoma­ terials commercially desirable can also read more..

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    N!!Jmmv !\�!!J�J� t\Rlf � ��jSf�J ��!)\jIJ�!!:J§ ���mJ §J!flJ©J llElJ!j !)\jI.Jl!j� !FIJJN� subscribe to Magic Pot online _.manoramaonline.com/subscribe read more..

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    Chaithanya S. Vinu, a student from Meenambalpuram, Tamil Nadu, has pointed out a mistake in the May issue of Tell Me Why, Explorations. She writes that, on page 31 , it is given that, Christopher Columbus set sail to China but reached America, which is not correct. In fact, Columbus set sail to India, greedy for wealth, just like many of his contemporaries. N. Shriram, read more..

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    NAND DICTIONARY Atomic Force Microscope (AFM): A microscope used in nanotechnology. It does not use light, but functions by the force between the atoms in the sample. Bottom-up: Building larger objects from smaller building blocks. Eg; Construction of machines using atoms and molecules. Buckminsterfullerene: A variety of buckyballs and carbon nanotubes. lt is named after the read more..

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    MEMS: Micro Electromechanical Systems used in integrated circuits. Nanobots: Small self-replicating nanorobots. Nanites: Machines with atom-sized components. Nanocrystals: Nanoscale semiconductor crystals, typically about 10 nm in diametre. Nanoscale: 1-100 nm range Quantum computer: A computer based on quantum bits that can represent any combination of one and zero. Quantum dots: Nanometre-sized read more..

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    I Wonder Whv'- Question of the Month What makes popcorn pop? A popcorn kernel is actually a seed. It has a tiny plant embryo in its centre, which is surrounded by a soft and starchy material that contains water. The embryo is again surrounded by a hard shell named hull. As the popcorn is heated, the water turns into steam, which builds pressure inside the hull. When read more..

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    1. Ashrith N. Raj Jawahar Navodaya Vidyalaya, Galibeedu, Kodagu, Karnataka. 2. Nitesh Kakkar H-60, Reserve Bank Officers Quarters, Poorvi Marg, VasantVihar, New Delhi 3.Abhay P.J. Niranjana, Chembukavu, Thrissur, Kerala. Winners ofthe GKContest - 12, Heritage Sites- held in the May issue of Tell Me Why. 4. A. Sahitya No.3, Type III, Kendriya Vidyalaya, Staff Qtrs, University Campus, read more..

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    Here.s a contest for our readers. Identify the footballers, from the photos given here. All you need to do is send us an email naming each one with the proper number. (PLEASE GIVE YOUR POSTAL ADDRESS ALSO IN THE E-MAIL) You are also welcome to send your answers by post. Five winners will be awarded prizes. In case there are more than five correct entries, the read more..

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    MANORAMA TELL ME WHY - NANOTECHNOLOGY Editor: Ammu Mathew Editor-in-(harge: A.V. Harisanker * Printed and Published by V. Sajeev George, on behalf of M.M. Publications Ltd, P.B. No. 226, Koltayam - 686001 at M.M. Publications Ltd, P.B. No. 226, Koltayam - 686 001 and Malayala Manorama Press, Koltayam - 686 039 and published from M.M. Publications ltd, P.B. No. 226, Koltayam - read more..

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