Nanomanufacturing: introduction
This course, taught by Prof. John Hart (www.umich.edu/~ajohnh), will be offered at the University of Michigan during Winter 2010. Nanomanufacturing presents how to make and assemble nanostructures—particularly nanotubes, nanowires, and nanoparticles—into devices and materials ranging from transistors to films, fibers, and structural composites. Emphasis is placed on understanding the unique properties of these building blocks, and how properties scale from the individual elements to bulk material architectures. Scalability is governed by the physical interactions among the structures, and the ability to manipulate and order nanostructures using chemical, mechanical, and electrical means. Our goal is to design new materials and devices using nanostructures, along with elegant and efficient manufacturing processes that that can realize the promise of nanotechnology at commercially-feasible scales. The course culminates in a team project that proposes a novel device or manufacturing process that uses nanostructures, such as a new architecture for a photovoltaic cell or battery electrode, or a self-assembly or printing process. Lecture notes will be posted in the “Teaching” section at www.mechanosynthesis.com.
Video Rating: 5 / 5
This course, taught by Prof. John Hart (www.umich.edu/~ajohnh), will be offered at the University of Michigan during Winter 2010. Nanomanufacturing presents how to make and assemble nanostructures—particularly nanotubes, nanowires, and nanoparticles—into devices and materials ranging from transistors to films, fibers, and structural composites. Emphasis is placed on understanding the unique properties of these building blocks, and how properties scale from the individual elements to bulk material architectures. Scalability is governed by the physical interactions among the structures, and the ability to manipulate and order nanostructures using chemical, mechanical, and electrical means. Our goal is to design new materials and devices using nanostructures, along with elegant and efficient manufacturing processes that that can realize the promise of nanotechnology at commercially-feasible scales. The course culminates in a team project that proposes a novel device or manufacturing process that uses nanostructures, such as a new architecture for a photovoltaic cell or battery electrode, or a self-assembly or printing process. Lecture notes will be posted in the “Teaching” section at www.mechanosynthesis.com.
Video Rating: 5 / 5
Nanotechnology ? Just What the Doctor Orders!
Nanotechnology ? Just What the Doctor Orders!
What if you were terminally ill and your doctor informed you that the venom from a snail could save your life?
What if the technology was available to produce a non-addictive painkiller that was thousands of times more potent than any morphine based product available today?
What if nanotechnology could provide the method of administering these potentially life-saving, pain elimination medicines within the near future? Would you be willing to support its advancement?
Well, nanotechnology is rapidly taking the “what if” out of just such medical conundrums. Biochemists, working in close liaison with nano-scientists, have discovered that the highly lethal venom contained in cone snails, which are found in coastal waters near coral reefs, can be extracted and, when administered via nanotechnologic methods, can potentially be used as a safe and effective alternative to highly addictive morphine-based medications.
Nanotechnology initiative programs are leading the highly competitive worldwide race in mining and providing a conduit for administering spiral snail toxins (known as conotoxins) and are developing methods of administering this peptide in a safe and positive manner.
Changes to the ion channels in human cells are directly responsible for a myriad of health disorders. Ion channels, which traditionally allow only calcium and potassium through their highly specific filtering system, can now be treated with toxins that have the ability to deactivate these channels. However, in the past, administration of these life altering conotoxins has offered a bit of a challenge to biology experts. That is, until now. This is where nanotechnology, with its innate ability to connect quantum dots, has provided a viable method of probing and infiltrating the cells in order to safely administer life altering drugs.
Due to its ability to
Nanotechnology as Career
Nanotechnology as Career
Nanotechnology – the science of the miniature, and the technology of the future – is one of the most exciting and wide area of research which may lead to the greatest technological advances of the 21st century. It is a global phenomenon and an emerging field, that finds its way into a myriad of industrial applications spanning across all areas of science and technology. A form of molecular engineering, it is the technology associated with the creation and scrutiny of minute objects, measuring between 1 to 100 nanometers. Nanotechnology can be defined as the application of science, engineering and technology to develop novel materials and devices in different fields in the nano-range.
‘Nano’ in Greek means dwarf. Nanometer (nm) is a unit of measurement used to measure very small particles like atoms and molecules. One nanometer is equal to one-billionth (10-9) of a meter. Entirely different from bulk material, nano-materials are 5,000 to 50,000 times smaller than the diameter of a human hair. These light but strong, transparent materials are very active and aggressive in any chemical reaction. Nano-materials can be mixed with strong or weak materials to make them thousand times stronger and more efficient. Carbon and diamond are super examples of nano-materials. The concept of Nanotechnology originated in 1959 and was founded by the American physicist Richard P Feynmam. But the term ‘Nanotechnology’ was first used in 1974 by Japanese scientist Prof. Norio Taniguchi at the Tokyo Science University. However it was introduced to the world in 1986 by K. Eric Drexler, an American Engineer and the founder of Foresight Nanotech Institute.
Nanotechnology is a unique and special branch of science that essentially combines physics, chemistry, biology, engineering etc. Sometimes known as molecular manufacturing, it deals with the design and manufacture of extremely small electronic circuits and mechanical devices built at the
Is Nanotechnology Totally Useless According to You?
Is Nanotechnology Totally Useless According to You?
Nanotechnology is the science and art of constructing functional and sometimes powerful devices by manipulating single atoms until they are molecularly sized. In order to achieve some relativity on this, one must be aware that a molecule is measured in nanometers, which is, essentially, one billionth of a meter – an atom is ten times smaller than that.
As a revolutionary concept, nanotechnology covers a wide spectrum that can often be a double edged sword. In the right hands, the extreme capability of nanotechnology can be a positive contributor to medical advancements, environmental cleansing, energy conservation and many other areas that can largely improve human existence on our planet. The down side to nanotechnology is that in the wrong hands it can be a destructive force that may ultimately lead to the annihilation of human existence and even of our planet.
There are varying schools of thought on the benefits versus the threats of nanotechnology pursuits. One outlook is that replicating nanostructures could gobble up the entire planet in about three hours flat while another is that nanotechnology as a science could revolutionize medical treatments for conditions that are presently incurable using standard technology.
Nanotechnology has been credited with many beneficial improvements to existing products like fabrics that totally resist staining, scratch resistant eyewear and sunscreen that can endure greater exposure to the elements for longer periods of time. In addition, creating smaller, more powerful devices via this technology has been a positive contributor to revolutionary advancements in computers, more improved diagnostic medical testing and more efficient means of removing toxicity from areas afflicted with environment contamination. Anyone would have to agree that these advantages are certainly not totally useless attributes of nanotechnology.
Nanomanufacturing Handbook
Nanomanufacturing Handbook
Breakthroughs in nanotechnology have been coming at a rapid pace over the past few years. This was fueled by significant worldwide investments by governments and industry. But if these promising young technologies cannot begin to show commercial viability soon, that funding is in danger of disappearing as investors lose their appetites and the economic and scientific promise of nanotechnology may not be realized. Scrutinizing the barriers to commercial scale-up of nanotechnologies, the Nanomanuf
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