Wires, tubes and brushes make it possible to build and maintain the machines and devices we use on a daily basis. Now, with help from a surprising source, these same building blocks can easily be created on a scale 10,000 times smaller than the period at the end of this sentence.
LEAD NANOPARTICLES — Scanning electron microscopy images of lead nanoparticles created with the electrodeposition technique. Shaped nanoparticles such as icosahedrons (a) and decahedrons (b) can be produced with voltages lower than 1.2 volts while elongated structures such as tripods (c) and nanobrushes (d) appear at higher voltages. The bar at the top of each image represents 500 nanometers (billionths of an inch).
Researchers at Argonne have figured out the basics of using electrochemistry to control the architecture of nanocrystals – small structures with dimensions in billionths of meters. Their findings, published in the March 3 edition of the Journal of the American Chemical Society, provide a practical method of generating large quantities of architecture-controlled nanocrystals, such as superconductors, ferromagnets and noble metals.
"The architectures of the nanocrystals are mainly controlled by applied voltages," said lead scientist Zhili Xiao of Argonnes Materials Science Division and Northern Illinois Universitys Physics Department. "This gives us much greater control over the growth conditions of the nanocrystals. We were able to create a great variety of structures with greater convenience and predictability compared with more traditional methods."
Margret Chang | Argonne
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Researchers from the Institute for Quantum Computing (IQC) at the University of Waterloo led the development of a new extensible wiring technique capable of controlling superconducting quantum bits, representing a significant step towards to the realization of a scalable quantum computer.
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By forcefully embedding two silicon atoms in a diamond matrix, Sandia researchers have demonstrated for the first time on a single chip all the components needed to create a quantum bridge to link quantum computers together.
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COMPAMED has become the leading international marketplace for suppliers of medical manufacturing. The trade fair, which takes place every November and is co-located to MEDICA in Dusseldorf, has been steadily growing over the past years and shows that medical technology remains a rapidly growing market.
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'Ferroelectric' materials can switch between different states of electrical polarization in response to an external electric field. This flexibility means they show promise for many applications, for example in electronic devices and computer memory. Current ferroelectric materials are highly valued for their thermal and chemical stability and rapid electro-mechanical responses, but creating a material that is scalable down to the tiny sizes needed for technologies like silicon-based semiconductors (Si-based CMOS) has proven challenging.
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