Nature Nanotechnology http://www.nature.com/nnano/current_issue/ Nature Publishing Group en © 2008 Nature Publishing Group Nature Nanotechnology 1748-3387 1748-3395 © 2008 Nature Publishing Group permissions@nature.com Nature Nanotechnology http://www.nature.com/includes/rj_globnavimages/nnano_logo.gif http://www.nature.com/nnano/ Conferences in the nanoworld http://dx.doi.org/10.1038/nnano.2008.180 Scientific meetings and conferences come in all shapes and size, and love them or loathe them, they have an important role to play in all areas of science. Conferences in the nanoworld

Nature Nanotechnology 3, 371 (2008). doi:10.1038/nnano.2008.180

Scientific meetings and conferences come in all shapes and size, and love them or loathe them, they have an important role to play in all areas of science.

]]> Conferences in the nanoworld doi:10.1038/nnano.2008.180 Nature Nanotechnology 3, 371 (2008) Nature Nanotechnology 3 7 Editorial 371 371 Indefinite particles http://dx.doi.org/10.1038/nnano.2008.196 It is difficult to be definitive about certain aspects of nanotechnology, especially the use of nanoparticles in medical applications. Chris Toumey looks at two views. Indefinite particles

Nature Nanotechnology 3, 372 (2008). doi:10.1038/nnano.2008.196

Author: Chris Toumey

It is difficult to be definitive about certain aspects of nanotechnology, especially the use of nanoparticles in medical applications. Chris Toumey looks at two views.

]]> Indefinite particles Chris Toumey doi:10.1038/nnano.2008.196 Nature Nanotechnology 3, 372 (2008) Nature Nanotechnology 3 7 Thesis 372 373 Cherenkov radiation in silicon nanoparticles, gold's catalytic secrets, graphene sheets keep their distance, and the safe production of nanomaterials http://dx.doi.org/10.1038/nnano.2008.204 Cherenkov radiation in silicon nanoparticles, gold's catalytic secrets, graphene sheets keep their distance, and the safe production of nanomaterials

Nature Nanotechnology 3, 374 (2008). doi:10.1038/nnano.2008.204

]]> Cherenkov radiation in silicon nanoparticles, gold's catalytic secrets, graphene sheets keep their distance, and the safe production of nanomaterials doi:10.1038/nnano.2008.204 Nature Nanotechnology 3, 374 (2008) 2008-06-13 Nature Nanotechnology 2008-06-13 3 7 Research Highlights 374 375 Top down bottom up: Mass appeal http://dx.doi.org/10.1038/nnano.2008.205 Nanoparticles can improve the spatial resolution of mass spectrometry imaging of mammalian tissues. Top down bottom up: Mass appeal

Nature Nanotechnology 3, 375 (2008). doi:10.1038/nnano.2008.205

Nanoparticles can improve the spatial resolution of mass spectrometry imaging of mammalian tissues.

]]> Top down bottom up: Mass appeal doi:10.1038/nnano.2008.205 Nature Nanotechnology 3, 375 (2008) Nature Nanotechnology 3 7 Research Highlights 375 375 Nanodevices: Charge of the heavy brigade http://dx.doi.org/10.1038/nnano.2008.197 Hybrid devices that rely on the movement of both electrons and ions might one day challenge conventional silicon electronics by exploiting both classical and quantum electron transport. Nanodevices: Charge of the heavy brigade

Nature Nanotechnology 3, 377 (2008). doi:10.1038/nnano.2008.197

Authors: Victor V. Zhirnov & Ralph K. Cavin

Hybrid devices that rely on the movement of both electrons and ions might one day challenge conventional silicon electronics by exploiting both classical and quantum electron transport.

]]> Nanodevices: Charge of the heavy brigade Victor V. Zhirnov Ralph K. Cavin doi:10.1038/nnano.2008.197 Nature Nanotechnology 3, 377 (2008) Nature Nanotechnology 3 7 News and Views 377 378 Nanotoxicology: The asbestos analogy revisited http://dx.doi.org/10.1038/nnano.2008.182 Direct injection of long multiwalled carbon nanotubes into the abdominal cavity of mice produces asbestos-like pathogenic behaviour. What does this finding mean for nanotube safety? Nanotoxicology: The asbestos analogy revisited

Nature Nanotechnology 3, 378 (2008). doi:10.1038/nnano.2008.182

Authors: Agnes B. Kane & Robert H. Hurt

Direct injection of long multiwalled carbon nanotubes into the abdominal cavity of mice produces asbestos-like pathogenic behaviour. What does this finding mean for nanotube safety?

]]> Nanotoxicology: The asbestos analogy revisited Agnes B. Kane Robert H. Hurt doi:10.1038/nnano.2008.182 Nature Nanotechnology 3, 378 (2008) Nature Nanotechnology 3 7 News and Views 378 379 Surface patterning: Ancients inspire modern memory http://dx.doi.org/10.1038/nnano.2008.192 A stencilling technique for depositing arrays of nanoscale ferroelectric capacitors on a surface could be useful in data storage devices. Surface patterning: Ancients inspire modern memory

Nature Nanotechnology 3, 380 (2008). doi:10.1038/nnano.2008.192

Author: J. Marty Gregg

A stencilling technique for depositing arrays of nanoscale ferroelectric capacitors on a surface could be useful in data storage devices.

]]> Surface patterning: Ancients inspire modern memory J. Marty Gregg doi:10.1038/nnano.2008.192 Nature Nanotechnology 3, 380 (2008) Nature Nanotechnology 3 7 News and Views 380 381 Nanoelectronics: The strain of it all http://dx.doi.org/10.1038/nnano.2008.195 Electron interferometry can be used to measure strain with nanoscale resolution in electronic devices by exploiting a simple idea found in physics textbooks. Nanoelectronics: The strain of it all

Nature Nanotechnology 3, 381 (2008). doi:10.1038/nnano.2008.195

Author: Abbas Ourmazd

Electron interferometry can be used to measure strain with nanoscale resolution in electronic devices by exploiting a simple idea found in physics textbooks.

]]> Nanoelectronics: The strain of it all Abbas Ourmazd doi:10.1038/nnano.2008.195 Nature Nanotechnology 3, 381 (2008) Nature Nanotechnology 3 7 News and Views 381 382 Nanomechanics: Macromolecules flex their muscles http://dx.doi.org/10.1038/nnano.2008.194 It will take a concerted effort for nanomachines to express themselves on a macroscopic scale. Could self-organizing helical polymers help? Nanomechanics: Macromolecules flex their muscles

Nature Nanotechnology 3, 383 (2008). doi:10.1038/nnano.2008.194

Authors: Ben L. Feringa & Wesley R. Browne

It will take a concerted effort for nanomachines to express themselves on a macroscopic scale. Could self-organizing helical polymers help?

]]> Nanomechanics: Macromolecules flex their muscles Ben L. Feringa Wesley R. Browne doi:10.1038/nnano.2008.194 Nature Nanotechnology 3, 383 (2008) Nature Nanotechnology 3 7 News and Views 383 384 Instrumentation: Carbon nanotubes on the brain http://dx.doi.org/10.1038/nnano.2008.193 The performance of metal electrodes used for studying brain function and relieving the symptoms of medical conditions can be significantly improved by coating them with carbon nanotubes. Instrumentation: Carbon nanotubes on the brain

Nature Nanotechnology 3, 384 (2008). doi:10.1038/nnano.2008.193

Author: Vladimir Parpura

The performance of metal electrodes used for studying brain function and relieving the symptoms of medical conditions can be significantly improved by coating them with carbon nanotubes.

]]> Instrumentation: Carbon nanotubes on the brain Vladimir Parpura doi:10.1038/nnano.2008.193 Nature Nanotechnology 3, 384 (2008) Nature Nanotechnology 3 7 News and Views 384 385 Progress towards monodisperse single-walled carbon nanotubes http://dx.doi.org/10.1038/nnano.2008.135 Single-walled carbon nanotubes tend to be produced in polydisperse mixtures with different lengths, diameters and electronic properties. This review article surveys the various techniques that have been developed for producing monodisperse samples from these mixtures. Selective growth techniques are also covered. Progress towards monodisperse single-walled carbon nanotubes

Nature Nanotechnology 3, 387 (2008). doi:10.1038/nnano.2008.135

Author: Mark C. Hersam

]]> Progress towards monodisperse single-walled carbon nanotubes Mark C. Hersam doi:10.1038/nnano.2008.135 Nature Nanotechnology 3, 387 (2008) 2008-05-30 Nature Nanotechnology 2008-05-30 3 7 Review 387 394 Tailoring the atomic structure of graphene nanoribbons by scanning tunnelling microscope lithography http://dx.doi.org/10.1038/nnano.2008.149 A lithographic method using a scanning tunnelling microscope can etch graphene nanoribbons in graphite sheets with nanometre precision. The electronic properties of these ribbons can be engineered by controlling their width and crystallographic orientation. Tailoring the atomic structure of graphene nanoribbons by scanning tunnelling microscope lithography

Nature Nanotechnology 3, 397 (2008). doi:10.1038/nnano.2008.149

Authors: Levente Tapasztó, Gergely Dobrik, Philippe Lambin & László P. Biró

]]> Tailoring the atomic structure of graphene nanoribbons by scanning tunnelling microscope lithography Levente Tapasztó Gergely Dobrik Philippe Lambin László P. Biró doi:10.1038/nnano.2008.149 Nature Nanotechnology 3, 397 (2008) 2008-06-08 Nature Nanotechnology 2008-06-08 3 7 Letter 397 401 Individually addressable epitaxial ferroelectric nanocapacitor arrays with near Tb inch−2 density http://dx.doi.org/10.1038/nnano.2008.161 Ferroelectric oxides have emerged as candidate materials for non-volatile data-storage applications, but they can be difficult to process. Researchers have now used a high-temperature deposition process to fabricate arrays of metal–ferroelectric–metal nanocapacitors with a density of 176 gigabits per square inch. Individually addressable epitaxial ferroelectric nanocapacitor arrays with near Tb inch−2 density

Nature Nanotechnology 3, 402 (2008). doi:10.1038/nnano.2008.161

Authors: Woo Lee, Hee Han, Andriy Lotnyk, Markus Andreas Schubert, Stephan Senz, Marin Alexe, Dietrich Hesse, Sunggi Baik & Ulrich Gösele

]]> Individually addressable epitaxial ferroelectric nanocapacitor arrays with near Tb inch−2 density Woo Lee Hee Han Andriy Lotnyk Markus Andreas Schubert Stephan Senz Marin Alexe Dietrich Hesse Sunggi Baik Ulrich Gösele doi:10.1038/nnano.2008.161 Nature Nanotechnology 3, 402 (2008) 2008-06-15 Nature Nanotechnology 2008-06-15 3 7 Letter 402 407 Prediction of very large values of magnetoresistance in a graphene nanoribbon device http://dx.doi.org/10.1038/nnano.2008.163 On the basis of first-principles computer simulations, theorists have predicted that zigzag graphene nanoribbons should display magnetoresistance values that are thousands of times higher than previously reported experimental values, and also should be able to generate highly spin-polarized currents. Prediction of very large values of magnetoresistance in a graphene nanoribbon device

Nature Nanotechnology 3, 408 (2008). doi:10.1038/nnano.2008.163

Authors: Woo Youn Kim & Kwang S. Kim

]]> Prediction of very large values of magnetoresistance in a graphene nanoribbon device Woo Youn Kim Kwang S. Kim doi:10.1038/nnano.2008.163 Nature Nanotechnology 3, 408 (2008) 2008-06-15 Nature Nanotechnology 2008-06-15 3 7 Letter 408 412 Subwavelength direct-write nanopatterning using optically trapped microspheres http://dx.doi.org/10.1038/nnano.2008.150 A number of optical techniques can produce subwavelength features on surfaces, but they tend to be limited in speed and expensive to implement. Researchers have now shown that a microsphere can be trapped near a surface by a specially shaped laser beam and used as a lens to focus another laser beam that writes subwavelength patterns directly onto the surface. Subwavelength direct-write nanopatterning using optically trapped microspheres

Nature Nanotechnology 3, 413 (2008). doi:10.1038/nnano.2008.150

Authors: Euan Mcleod & Craig B. Arnold

]]> Subwavelength direct-write nanopatterning using optically trapped microspheres Euan Mcleod Craig B. Arnold doi:10.1038/nnano.2008.150 Nature Nanotechnology 3, 413 (2008) 2008-06-08 Nature Nanotechnology 2008-06-08 3 7 Letter 413 417 Self-assembled DNA nanostructures for distance-dependent multivalent ligand–protein binding http://dx.doi.org/10.1038/nnano.2008.164 DNA tiles can be used as a platform to display two different aptamers — short sequences of nucleotides that bind to proteins — with high spatial control, to systematically study the distance dependence of multivalent interactions. Self-assembled DNA nanostructures for distance-dependent multivalent ligand–protein binding

Nature Nanotechnology 3, 418 (2008). doi:10.1038/nnano.2008.164

Authors: Sherri Rinker, Yonggang Ke, Yan Liu, Rahul Chhabra & Hao Yan

]]> Self-assembled DNA nanostructures for distance-dependent multivalent ligand–protein binding Sherri Rinker Yonggang Ke Yan Liu Rahul Chhabra Hao Yan doi:10.1038/nnano.2008.164 Nature Nanotechnology 3, 418 (2008) 2008-06-22 Nature Nanotechnology 2008-06-22 3 7 Letter 418 422 Carbon nanotubes introduced into the abdominal cavity of mice show asbestos-like pathogenicity in a pilot study http://dx.doi.org/10.1038/nnano.2008.111 A pilot study in a small number of mice shows that long multiwalled carbon nanotubes introduced into the abdominal cavity can cause asbestos-like pathogenic behaviour. The results suggest the need for further research and caution before introducing nanotube products into the market. Carbon nanotubes introduced into the abdominal cavity of mice show asbestos-like pathogenicity in a pilot study

Nature Nanotechnology 3, 423 (2008). doi:10.1038/nnano.2008.111

Authors: Craig A. Poland, Rodger Duffin, Ian Kinloch, Andrew Maynard, William A. H. Wallace, Anthony Seaton, Vicki Stone, Simon Brown, William MacNee & Ken Donaldson

]]> Carbon nanotubes introduced into the abdominal cavity of mice show asbestos-like pathogenicity in a pilot study Craig A. Poland Rodger Duffin Ian Kinloch Andrew Maynard William A. H. Wallace Anthony Seaton Vicki Stone Simon Brown William MacNee Ken Donaldson doi:10.1038/nnano.2008.111 Nature Nanotechnology 3, 423 (2008) 2008-05-20 Nature Nanotechnology 2008-05-20 3 7 Letter 423 428 Memristive switching mechanism for metal/oxide/metal nanodevices http://dx.doi.org/10.1038/nnano.2008.160 Nanoscale metal/oxide/metal devices that are capable of fast non-volatile switching have been built from platinum and titanium dioxide. The devices could have applications in ultrahigh density memory cells and novel forms of computing. Memristive switching mechanism for metal/oxide/metal nanodevices

Nature Nanotechnology 3, 429 (2008). doi:10.1038/nnano.2008.160

Authors: J. Joshua Yang, Matthew D. Pickett, Xuema Li, Douglas A. A. Ohlberg, Duncan R. Stewart & R. Stanley Williams

]]> Memristive switching mechanism for metal/oxide/metal nanodevices J. Joshua Yang Matthew D. Pickett Xuema Li Douglas A. A. Ohlberg Duncan R. Stewart R. Stanley Williams doi:10.1038/nnano.2008.160 Nature Nanotechnology 3, 429 (2008) 2008-06-15 Nature Nanotechnology 2008-06-15 3 7 Article 429 433 Carbon nanotube coating improves neuronal recordings http://dx.doi.org/10.1038/nnano.2008.174 Coating conventional tungsten and stainless steel electrodes with carbon nanotubes improves their performance in research involving the implantation of electrical devices into the nervous system. The results could have an impact on electrophysiology and the development of brain–machine interfaces. Carbon nanotube coating improves neuronal recordings

Nature Nanotechnology 3, 434 (2008). doi:10.1038/nnano.2008.174

Authors: Edward W. Keefer, Barry R. Botterman, Mario I. Romero, Andrew F. Rossi & Guenter W. Gross

]]> Carbon nanotube coating improves neuronal recordings Edward W. Keefer Barry R. Botterman Mario I. Romero Andrew F. Rossi Guenter W. Gross doi:10.1038/nnano.2008.174 Nature Nanotechnology 3, 434 (2008) 2008-06-29 Nature Nanotechnology 2008-06-29 3 7 Article 434 439