No.5 - Jan 2006


	Summary Application of the month: Carbon nanotubes as electron sources in field emission Anatomy of a patenting area: Separation of Carbon Nanotubes Research papers monitoring Patents monitoring Featured research using Nanocyl nanotubes Researcher profiles

Please subscribe to get the newsletter timely


	RESEARCH EMPLOYING NANOCYL NANOTUBES The current research digest of Nanocyl's nanotubes focuses on the work of Robert Jérôme, François Stoffelbach, Abdelhafid Aqil, Christine Jérôme and Christophe Detrembleur, from the Center for Education and Research on Macromolecules (CERM), University of Liege, Belgium. In a paper presented last year in Chemical Communications (Chem. Commun., 2005, 4532–4533), the team led by Prof. Dr. Robert Jérôme disclosed a simple, cheap and tunable approach for the decoration of carbon nanotubes by magnetite nanoparticles (Fe3O4) and their orientation in a magnetic field. Decorating carbon nanotubes with metallic particles is a relatively hot topic. For this purpose, multi-walled carbon nanotubes are usually functionalized by grafting with preformed poly (2-vinylpyridine) chains through a covalent bonding... READ MORE...

RESEARCHER PROFILES

Petra Pötschke
Scientist, Subinstitute of Macromolecular Chemistry,
Department of Polymer Reactions and Blends, Leibniz Institute of Polymer Research Dresden, Germany
MORE...

János B. Nagy
Professor,
Director of the Laboratory of Nuclear Magnetic Resonance,
Facultés Universitaires
Notre-Dame de la Paix, Namur, Belgique
MORE...

Werner Blau
Professor, Werner Blau Group, Materials Ireland Polymer Research Centre, Dublinr
MORE...

Andrew D. Briggs
Professor of Nanomaterials, Director of the Quantum Information Processing IRC, Department of Materials, University of Oxford
MORE...


	No.5 - Jan 2006 Based on the NanoSPRINT Encyclopedia of Carbon Nanotubes APPLICATION OF THE MONTH: Carbon nanotubes as electron sources in field emission Field emission represents a type of quantum tunnelling in which electrons pass through a barrier in the presence of a high electric field. As opposed to thermionic emission, field emission does not require any heat for extracting the electrons. However, it strongly depends on both the properties of the material and the shape of the cold cathode. For instance, cathodes of higher aspect ratios produce higher field emission currents. As an alternative to thermionic emission, field emission promises dramatically higher efficiency, less scatter of emitted electrons, faster turn-on times, and the possibility to build more robust and compact devices. Known disadvantages often include the lower overall current density. READ MORE... ANATOMY OF A PATENTING AREA: Separation of carbon nanotubes The evolution of the patents regarding nanotubes separation presents several distinct features. The most obvious one is an unmistakable gap between the first patent dealing (although marginally) with nanotubes sorting and the rest of the patents on this topic. It took almost seven years for the research community to come up with new separation techniques. Most probably, the gap also arise from a tardily need for distinct metallic or semiconducting nanotubes in various applications, including nanoelectronics, sensors, and field emission, to name just a few. The onset of novel solution-processing techniques of carbon nanotubes also boosted the subsequent development of the patents issued on nanotubes separation. READ MORE... RESEARCH PAPERS IN DECEMBER 2005 (76) Sensors and actuators Single-Walled Carbon Nanotube Spectroscopy in Live Cells: Towards Long-Term Labels and Optical Sensors D. A. Heller, S. Baik, T. E. Eurell, M. S. Strano Molecular templates and scaffolds A Highly Efficient Chemical Sensor Material for H2S: -Fe2O3 Nanotubes Fabricated Using Carbon Nanotube Templates Z. Sun, H. Yuan, Z. Liu, B. Han, X. Zhang Processing Carbon nanotube effects on electroluminescence and photovoltaic response in conjugated polymers Zhihua Xu, Yue Wu, Bin Hu, Ilia N. Ivanov, and David B. Geohegan READ MORE... PATENTS MONITORING IN DECEMBER 2005 (25) Sensors Nanostructure sensor device with polymer recognition layer Inventor: STAR ALEXANDER (US); GABRIEL JEAN-CHRISTOPHE P (US) US2005279987 Composite materials Wear resistant EMI shield Inventor: CHEN GA-LANE (US) Applicant: HON HAI PREC IND CO LTD (TW) US2005276978 Processing Nano-extraction method and nano-condensation methods for guest molecules incorporation into single-wall carbon nanotube Inventor: IIJIMA SUMIO (JP); AJIMA KUMIKO (JP); YUDASAKA MASAKO (JP) Applicant: NIPPON ELECTRIC CO US2005271807