In Memoriam: Arthur Stanley Nowick
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Nano Focus Key Ultracompact advance made self-wound toward understanding nanomembranes “pseudogap” exhibit phase exceptional in HTSsupercapacitance
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esigning ultracompact supercapacitors is a critical challenge for the development of next-generation compact electronic gadgets such as implantable biomedical devices. Currently available supercapacitors are too bulky for use in such small gadgets. Using nanoscale selfassembly techniques, C.C. Bof Bufon and O.G. Schmidt from Chemnitz University of Technology and IFW Dresden in Germany, and their colleagues have developed a method to fabricate self-wound ultracompact hybrid nanomembranes that are two orders of magnitude smaller than their flat counterparts with exceptionally high capacitance per footprint area. As reported in the July 14th issue of Nano Letters (DOI: 10.1021/nl1010367;
In Memoriam: Arthur Stanley Nowick
Arthur Stanley Nowick died on July 20 at age 86 of heart arrhythmia while swimming near his home in Newport Beach, Calif. He was a pioneer in the field of internal friction, anelasticity, and crystal defects.
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MRS BULLETIN
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VOLUME 35 • OCTOBER 2010
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boring nucleobases. Several challenges still remain to be overcome before a nanopore can do such reading, including controlling the speed
with which DNA threads through the nanopore. Other co-authors are W. Hubbard of Harvard, and A. Reina and J. Kong of MIT.
p. 2506), the research team deposited strained multilayered nanomembranes by sequential depositions of metal and dielectric thin films on a sacrificial layer. Selective etching of the sacrificial layer initiated self-rolling of the nanomembranes into cylinders. The compactness of the cylinders was reproducibly tuned by careful control of the processing parameters. Hundreds of self-rolled cylinders can be prepared in parallel on a single chip which can be reused repeatedly. Furthermore, the research team demonstrated that organic monolayers may be introduced in the inorganic films of the nanomembranes to reduce leakage currents. In addition, these organic monolayers could be potentially leveraged for biological and chemical functionalization of these electronic elements with organic molecules. This selfrolling process can occur in aqueous media at physiological pH and is thus compatible for incorporation of biomolecules.
The researchers believe that these ultracompact capacitors could be used to reduce size of energy storage elements, filters and signal converters in a variety of applications such as implantable biomedical devices and novel devices for energy harvesting. Kaushik Chatterjee
He is the author of more than 200 publications in a wide range of fields in materials science and solid-state physics. His 1972 book Anelastic Relaxation in Crystalline Solids (Academic Press), coauthored with Brian S. Berry, is widely recognized as the definitive treatise on internal friction and anelasticity. He is author of the 1995 book Crystal Properties via Group Theory (Cambridge University Press). He is co-editor of two additional books on diff
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