Nature Nanotechnology http://www.nature.com/nnano/current_issue/ Nature Publishing Group en © 2009 Nature Publishing Group Nature Nanotechnology 1748-3387 1748-3395 © 2009 Nature Publishing Group permissions@nature.com Nature Nanotechnology http://www.nature.com/includes/rj_globnavimages/nnano_logo.gif http://www.nature.com/nnano/ Of mice and men http://dx.doi.org/10.1038/nnano.2009.162 We need a systematic way to formulate and tackle problems in nanotoxicology, and to compare and combine the results from individual studies. Of mice and men

Nature Nanotechnology 4, 395 (2009). doi:10.1038/nnano.2009.162

We need a systematic way to formulate and tackle problems in nanotoxicology, and to compare and combine the results from individual studies.

]]> Of mice and men doi:10.1038/nnano.2009.162 Nature Nanotechnology 4, 395 (2009) Nature Nanotechnology 10.1038/nnano.2009.162 http://dx.doi.org/10.1038/nnano.2009.162 4 7 Editorial 395 395 Plenty of gloom and doom at the bottom? http://dx.doi.org/10.1038/nnano.2009.163 The relationship between humans and technology is often viewed as a debate between technophobes who oppose technology, irrespective of its benefits, and technophiles who think that all technology is good. Chris Toumey prefers the cyborg point of view. Plenty of gloom and doom at the bottom?

Nature Nanotechnology 4, 396 (2009). doi:10.1038/nnano.2009.163

Author: Chris Toumey

The relationship between humans and technology is often viewed as a debate between technophobes who oppose technology, irrespective of its benefits, and technophiles who think that all technology is good. Chris Toumey prefers the cyborg point of view.

]]> Plenty of gloom and doom at the bottom? Chris Toumey doi:10.1038/nnano.2009.163 Nature Nanotechnology 4, 396 (2009) Nature Nanotechnology 10.1038/nnano.2009.163 http://dx.doi.org/10.1038/nnano.2009.163 4 7 Thesis 396 397 Strictly nanotubes in Beijing http://dx.doi.org/10.1038/nnano.2009.164 A collaboration between China's leading university and one of the world's biggest industrial companies is bringing a range of nanotube-based materials and devices to the market. Strictly nanotubes in Beijing

Nature Nanotechnology 4, 398 (2009). doi:10.1038/nnano.2009.164

Author: Adarsh Sandhu

A collaboration between China's leading university and one of the world's biggest industrial companies is bringing a range of nanotube-based materials and devices to the market.

]]> Strictly nanotubes in Beijing Adarsh Sandhu doi:10.1038/nnano.2009.164 Nature Nanotechnology 4, 398 (2009) Nature Nanotechnology 10.1038/nnano.2009.164 http://dx.doi.org/10.1038/nnano.2009.164 4 7 Feature 398 399 Our choice from the recent literature http://dx.doi.org/10.1038/nnano.2009.165 Our choice from the recent literature

Nature Nanotechnology 4, 400 (2009). doi:10.1038/nnano.2009.165

]]> Our choice from the recent literature doi:10.1038/nnano.2009.165 Nature Nanotechnology 4, 400 (2009) 2009-05-22 Nature Nanotechnology 2009-05-22 10.1038/nnano.2009.165 http://dx.doi.org/10.1038/nnano.2009.165 4 7 Research Highlights 400 401 Top down bottom up: Strength in numbers http://dx.doi.org/10.1038/nnano.2009.166 Computational screening has turned up a fullerene derivative that might help fight the HIV virus. Top down bottom up: Strength in numbers

Nature Nanotechnology 4, 401 (2009). doi:10.1038/nnano.2009.166

Computational screening has turned up a fullerene derivative that might help fight the HIV virus.

]]> Top down bottom up: Strength in numbers doi:10.1038/nnano.2009.166 Nature Nanotechnology 4, 401 (2009) Nature Nanotechnology 10.1038/nnano.2009.166 http://dx.doi.org/10.1038/nnano.2009.166 4 7 Research Highlights 401 401 Nanobiotechnology: A fluid approach to simple circuits http://dx.doi.org/10.1038/nnano.2009.168 Using simple components such as oil, salt water, lipids and proteins, plus routine genetic engineering techniques, it is possible to create simple nanofluidic circuits. Nanobiotechnology: A fluid approach to simple circuits

Nature Nanotechnology 4, 403 (2009). doi:10.1038/nnano.2009.168

Authors: Vicente M. Aguilella & Antonio Alcaraz

Using simple components such as oil, salt water, lipids and proteins, plus routine genetic engineering techniques, it is possible to create simple nanofluidic circuits.

]]> Nanobiotechnology: A fluid approach to simple circuits Vicente M. Aguilella Antonio Alcaraz doi:10.1038/nnano.2009.168 Nature Nanotechnology 4, 403 (2009) Nature Nanotechnology 10.1038/nnano.2009.168 http://dx.doi.org/10.1038/nnano.2009.168 4 7 News and Views 403 404 Nanoelectromechanical systems: Mass spec goes nanomechanical http://dx.doi.org/10.1038/nnano.2009.169 A new approach to mass spectrometry based on nanoelectromechanical systems removes the need to ionize molecules before their mass can be determined. Nanoelectromechanical systems: Mass spec goes nanomechanical

Nature Nanotechnology 4, 404 (2009). doi:10.1038/nnano.2009.169

Author: Anja Boisen

A new approach to mass spectrometry based on nanoelectromechanical systems removes the need to ionize molecules before their mass can be determined.

]]> Nanoelectromechanical systems: Mass spec goes nanomechanical Anja Boisen doi:10.1038/nnano.2009.169 Nature Nanotechnology 4, 404 (2009) Nature Nanotechnology 10.1038/nnano.2009.169 http://dx.doi.org/10.1038/nnano.2009.169 4 7 News and Views 404 405 Ferroelectric memory: Slim fast http://dx.doi.org/10.1038/nnano.2009.161 Ferroelectric memory: Slim fast

Nature Nanotechnology 4, 405 (2009). doi:10.1038/nnano.2009.161

Author: Michael Segal

]]> Ferroelectric memory: Slim fast Michael Segal doi:10.1038/nnano.2009.161 Nature Nanotechnology 4, 405 (2009) Nature Nanotechnology 10.1038/nnano.2009.161 http://dx.doi.org/10.1038/nnano.2009.161 4 7 News and Views 405 405 Correlated electron systems: Better than average http://dx.doi.org/10.1038/nnano.2009.124 Experiments on single-crystal nanobeams have revealed several new aspects of a phenomenon that has puzzled physicists for decades — the metal–insulator transition in vanadium dioxide. Correlated electron systems: Better than average

Nature Nanotechnology 4, 406 (2009). doi:10.1038/nnano.2009.124

Author: Douglas Natelson

Experiments on single-crystal nanobeams have revealed several new aspects of a phenomenon that has puzzled physicists for decades — the metal–insulator transition in vanadium dioxide.

]]> Correlated electron systems: Better than average Douglas Natelson doi:10.1038/nnano.2009.124 Nature Nanotechnology 4, 406 (2009) 2009-05-24 Nature Nanotechnology 2009-05-24 10.1038/nnano.2009.124 http://dx.doi.org/10.1038/nnano.2009.124 4 7 News and Views 406 407 Nanomaterials: Sticky but not messy http://dx.doi.org/10.1038/nnano.2009.135 Inspired by the feet of the gecko lizard, researchers have tweaked a conventional plasma etching chamber so that it can make reusable adhesives that could have applications in the semiconductor industry. Nanomaterials: Sticky but not messy

Nature Nanotechnology 4, 407 (2009). doi:10.1038/nnano.2009.135

Author: Zhong Lin Wang

Inspired by the feet of the gecko lizard, researchers have tweaked a conventional plasma etching chamber so that it can make reusable adhesives that could have applications in the semiconductor industry.

]]> Nanomaterials: Sticky but not messy Zhong Lin Wang doi:10.1038/nnano.2009.135 Nature Nanotechnology 4, 407 (2009) Nature Nanotechnology 10.1038/nnano.2009.135 http://dx.doi.org/10.1038/nnano.2009.135 4 7 News and Views 407 408 Nanotoxicology: How do nanotubes suppress T cells? http://dx.doi.org/10.1038/nnano.2009.167 Mice inhaling low levels of multiwalled carbon nanotubes show suppressed immune function. New studies suggest that this suppression originates from signals in the lungs. Nanotoxicology: How do nanotubes suppress T cells?

Nature Nanotechnology 4, 409 (2009). doi:10.1038/nnano.2009.167

Author: Alison Elder

Mice inhaling low levels of multiwalled carbon nanotubes show suppressed immune function. New studies suggest that this suppression originates from signals in the lungs.

]]> Nanotoxicology: How do nanotubes suppress T cells? Alison Elder doi:10.1038/nnano.2009.167 Nature Nanotechnology 4, 409 (2009) 2009-06-14 Nature Nanotechnology 2009-06-14 10.1038/nnano.2009.167 http://dx.doi.org/10.1038/nnano.2009.167 4 7 News and Views 409 410 Evaluation of nanoparticle immunotoxicity http://dx.doi.org/10.1038/nnano.2009.175 Evaluation of nanoparticle immunotoxicity

Nature Nanotechnology 4, 411 (2009). doi:10.1038/nnano.2009.175

Authors: Marina A. Dobrovolskaia, Dori R. Germolec & James L. Weaver

]]> Evaluation of nanoparticle immunotoxicity Marina A. Dobrovolskaia Dori R. Germolec James L. Weaver doi:10.1038/nnano.2009.175 Nature Nanotechnology 4, 411 (2009) 2009-06-28 Nature Nanotechnology 2009-06-28 10.1038/nnano.2009.175 http://dx.doi.org/10.1038/nnano.2009.175 4 7 Progress Article 411 414 Nanoscale shape-memory alloys for ultrahigh mechanical damping http://dx.doi.org/10.1038/nnano.2009.142 Shape-memory alloys undergo reversible transformations between two distinct phases. Now researchers have shown that nanoscale pillars made of shape-memory alloys have a figure of merit for mechanical damping — substantially higher than the figures previously reported for bulk materials — making these nanopillars attractive for use in future microscale and smaller devices. Nanoscale shape-memory alloys for ultrahigh mechanical damping

Nature Nanotechnology 4, 415 (2009). doi:10.1038/nnano.2009.142

Authors: Jose San Juan, Maria L. Nó & Christopher A. Schuh

]]> Nanoscale shape-memory alloys for ultrahigh mechanical damping Jose San Juan Maria L. Nó Christopher A. Schuh doi:10.1038/nnano.2009.142 Nature Nanotechnology 4, 415 (2009) 2009-06-07 Nature Nanotechnology 2009-06-07 10.1038/nnano.2009.142 http://dx.doi.org/10.1038/nnano.2009.142 4 7 Letter 415 419 New aspects of the metal–insulator transition in single-domain vanadium dioxide nanobeams http://dx.doi.org/10.1038/nnano.2009.141 Many strongly correlated electron systems have a domain structure that obscures the fundamental properties of the homogeneous material. Experiments on single-domain nanobeams made of vanadium dioxide have revealed several new aspects of the metal–insulator transition in this material. New aspects of the metal–insulator transition in single-domain vanadium dioxide nanobeams

Nature Nanotechnology 4, 420 (2009). doi:10.1038/nnano.2009.141

Authors: Jiang Wei, Zenghui Wang, Wei Chen & David H. Cobden

]]> New aspects of the metal–insulator transition in single-domain vanadium dioxide nanobeams Jiang Wei Zenghui Wang Wei Chen David H. Cobden doi:10.1038/nnano.2009.141 Nature Nanotechnology 4, 420 (2009) 2009-05-24 Nature Nanotechnology 2009-05-24 10.1038/nnano.2009.141 http://dx.doi.org/10.1038/nnano.2009.141 4 7 Letter 420 424 Observation of the triplet exciton in EuS-coated single-walled nanotubes http://dx.doi.org/10.1038/nnano.2009.122 Excitons are created when a carbon nanotube absorbs photons. However, the triplet exciton is usually optically inactive, preventing its direct observation, lowering photocurrent efficiency and making optical injection of spin-polarized carriers impossible. Optical excitation of the triplet exciton has now been achieved. Observation of the triplet exciton in EuS-coated single-walled nanotubes

Nature Nanotechnology 4, 425 (2009). doi:10.1038/nnano.2009.122

Authors: Aditya D. Mohite, Tiffany S. Santos, Jagadeesh S. Moodera & Bruce W. Alphenaar

]]> Observation of the triplet exciton in EuS-coated single-walled nanotubes Aditya D. Mohite Tiffany S. Santos Jagadeesh S. Moodera Bruce W. Alphenaar doi:10.1038/nnano.2009.122 Nature Nanotechnology 4, 425 (2009) 2009-06-07 Nature Nanotechnology 2009-06-07 10.1038/nnano.2009.122 http://dx.doi.org/10.1038/nnano.2009.122 4 7 Letter 425 429 Multifunctional nanoarchitectures from DNA-based ABC monomers http://dx.doi.org/10.1038/nnano.2009.93 Multifunctional nanostructures have been created from DNA-based anisotropic, branched and crosslinkable building blocks — ABC monomers. Using these monomers, a target-driven polymerization process is demonstrated where polymers are generated only in the presence of a specific DNA molecule, leading to highly sensitive pathogen detection. The nanoarchitectures can also be used to deliver drugs to cells. Multifunctional nanoarchitectures from DNA-based ABC monomers

Nature Nanotechnology 4, 430 (2009). doi:10.1038/nnano.2009.93

Authors: Jong B. Lee, Young H. Roh, Soong Ho Um, Hisakage Funabashi, Wenlong Cheng, Judy J. Cha, Pichamon Kiatwuthinon, David A. Muller & Dan Luo

]]> Multifunctional nanoarchitectures from DNA-based ABC monomers Jong B. Lee Young H. Roh Soong Ho Um Hisakage Funabashi Wenlong Cheng Judy J. Cha Pichamon Kiatwuthinon David A. Muller Dan Luo doi:10.1038/nnano.2009.93 Nature Nanotechnology 4, 430 (2009) 2009-05-03 Nature Nanotechnology 2009-05-03 10.1038/nnano.2009.93 http://dx.doi.org/10.1038/nnano.2009.93 4 7 Letter 430 436 Droplet networks with incorporated protein diodes show collective properties http://dx.doi.org/10.1038/nnano.2009.121 Aqueous droplets connected by single lipid bilayers have been used to examine the properties of protein channels and pores, and networks of droplets can form microscale batteries and detect light. Now, by inserting an engineered pore with diode-like properties into the interface bilayers, droplet networks that mimic simple electronic devices have been produced. Droplet networks with incorporated protein diodes show collective properties

Nature Nanotechnology 4, 437 (2009). doi:10.1038/nnano.2009.121

Authors: Giovanni Maglia, Andrew J. Heron, William L. Hwang, Matthew A. Holden, Ellina Mikhailova, Qiuhong Li, Stephen Cheley & Hagan Bayley

]]> Droplet networks with incorporated protein diodes show collective properties Giovanni Maglia Andrew J. Heron William L. Hwang Matthew A. Holden Ellina Mikhailova Qiuhong Li Stephen Cheley Hagan Bayley doi:10.1038/nnano.2009.121 Nature Nanotechnology 4, 437 (2009) 2009-06-07 Nature Nanotechnology 2009-06-07 10.1038/nnano.2009.121 http://dx.doi.org/10.1038/nnano.2009.121 4 7 Letter 437 440 Transfer of gold nanoparticles from the water column to the estuarine food web http://dx.doi.org/10.1038/nnano.2009.157 Gold nanorods added to a laboratory-constructed estuarine mesocosm can accumulate in sediments, biofilms and various organisms such as fish, snails and shrimp. Most of the nanorods ended up in biofilms and clams, indicating that these nanoparticles could readily pass from the water column into the marine food web. Transfer of gold nanoparticles from the water column to the estuarine food web

Nature Nanotechnology 4, 441 (2009). doi:10.1038/nnano.2009.157

Authors: John L. Ferry, Preston Craig, Cole Hexel, Patrick Sisco, Rebecca Frey, Paul L. Pennington, Michael H. Fulton, I. Geoff Scott, Alan W. Decho, Shosaku Kashiwada, Catherine J. Murphy & Timothy J. Shaw

]]> Transfer of gold nanoparticles from the water column to the estuarine food web John L. Ferry Preston Craig Cole Hexel Patrick Sisco Rebecca Frey Paul L. Pennington Michael H. Fulton I. Geoff Scott Alan W. Decho Shosaku Kashiwada Catherine J. Murphy Timothy J. Shaw doi:10.1038/nnano.2009.157 Nature Nanotechnology 4, 441 (2009) 2009-06-21 Nature Nanotechnology 2009-06-21 10.1038/nnano.2009.157 http://dx.doi.org/10.1038/nnano.2009.157 4 7 Letter 441 444 Towards single-molecule nanomechanical mass spectrometry http://dx.doi.org/10.1038/nnano.2009.152 Mass detection of single biological molecules in real time by a nanoelectromechanical system (NEMS) is demonstrated for the first time, and this is used to perform first generation NEMS-based mass spectrometry. Precipitous frequency shifts, proportional to the mass of the molecules, are recorded in real time by the NEMS mass spectrometry system as protein molecules and nanoparticles adsorb, one-by-one, onto an ultrahigh frequency NEMS resonator. Towards single-molecule nanomechanical mass spectrometry

Nature Nanotechnology 4, 445 (2009). doi:10.1038/nnano.2009.152

Authors: A. K. Naik, M. S. Hanay, W. K. Hiebert, X. L. Feng & M. L. Roukes

]]> Towards single-molecule nanomechanical mass spectrometry A. K. Naik M. S. Hanay W. K. Hiebert X. L. Feng M. L. Roukes doi:10.1038/nnano.2009.152 Nature Nanotechnology 4, 445 (2009) 2009-06-21 Nature Nanotechnology 2009-06-21 10.1038/nnano.2009.152 http://dx.doi.org/10.1038/nnano.2009.152 4 7 Article 445 450 Mechanisms for how inhaled multiwalled carbon nanotubes suppress systemic immune function in mice http://dx.doi.org/10.1038/nnano.2009.151 It has been shown that inhaling multiwalled carbon nanotubes does not lead to significant lung inflammation, but can suppress the immune function of mice. Now it is demonstrated that signals in the lung can activate signals in the spleen to inhibit the immune function of mice inhaling low levels of nanotubes. Mechanisms for how inhaled multiwalled carbon nanotubes suppress systemic immune function in mice

Nature Nanotechnology 4, 451 (2009). doi:10.1038/nnano.2009.151

Authors: L. A. Mitchell, F. T. Lauer, S. W. Burchiel & J. D. McDonald

]]> Mechanisms for how inhaled multiwalled carbon nanotubes suppress systemic immune function in mice L. A. Mitchell F. T. Lauer S. W. Burchiel J. D. McDonald doi:10.1038/nnano.2009.151 Nature Nanotechnology 4, 451 (2009) 2009-06-14 Nature Nanotechnology 2009-06-14 10.1038/nnano.2009.151 http://dx.doi.org/10.1038/nnano.2009.151 4 7 Article 451 456 Self-assembled cationic peptide nanoparticles as an efficient antimicrobial agent http://dx.doi.org/10.1038/nnano.2009.153 A class of core–shell nanoparticles self-assembled from amphiphilic peptides can kill a range of bacteria, yeast and fungus. They are more potent than their unassembled peptide counterparts and can suppress bacterial growth in the brains of rabbits infected with meningitis. These particles, which carry a high number of positive charges, are promising antimicrobial agents. Self-assembled cationic peptide nanoparticles as an efficient antimicrobial agent

Nature Nanotechnology 4, 457 (2009). doi:10.1038/nnano.2009.153

Authors: Lihong Liu, Kaijin Xu, Huaying Wang, P. K. Jeremy Tan, Weimin Fan, Subbu S. Venkatraman, Lanjuan Li & Yi-Yan Yang

]]> Self-assembled cationic peptide nanoparticles as an efficient antimicrobial agent Lihong Liu Kaijin Xu Huaying Wang P. K. Jeremy Tan Weimin Fan Subbu S. Venkatraman Lanjuan Li Yi-Yan Yang doi:10.1038/nnano.2009.153 Nature Nanotechnology 4, 457 (2009) 2009-06-28 Nature Nanotechnology 2009-06-28 10.1038/nnano.2009.153 http://dx.doi.org/10.1038/nnano.2009.153 4 7 Article 457 463