Table of contents


Top

Editorial

Organics settle down p607

doi:10.1038/nnano.2009.277

Researchers are slowly but surely improving the processing of organic semiconductors, making organic devices more viable.

Subject terms: Electronic properties and devices | Molecular self-assembly | Nanomaterials


Top

Commentary

The New Deficit Model pp609 - 611

Simon Brown

doi:10.1038/nnano.2009.278

Calls for more data on the impact of nanomaterials on human health and the environment reflect a failure to accept that there will always be unknowns associated with any new technology. Effective governance of emerging nanotechnologies will require an acknowledgement of these unknowns, an open and adaptive approach to regulation, and the courage to make decisions.

Subject term: Environmental, health and safety issues


Top

Feature

Selling graphene by the ton pp612 - 614

Michael Segal

doi:10.1038/nnano.2009.279

Small start-up companies are making large volumes of graphene, the world's thinnest material, for applications such as composites and electrodes.

Subject terms: Nanomaterials | Synthesis and processing | Industry and IPR


Top

Thesis

It's not just about nanotoxicology p615

Richard Jones

doi:10.1038/nnano.2009.280

A report on nanotechnology published in 2004 by two learned societies in the UK has had impacts in other areas of science and technology, as Richard Jones reports.

Subject term: Ethical, legal and other societal issues


Top

Research Highlights

Our choice from the recent literature pp616 - 617

doi:10.1038/nnano.2009.281


Top down bottom up: Search and destroy p617

doi:10.1038/nnano.2009.282

A multifunctional nanoparticle that can help doctors find and treat cancer and atherosclerosis has been synthesized.

Subject terms: Nanomedicine | Nanoparticles


Top

News and Views

Nanoelectromechanical systems: Show of strength pp619 - 620

Marc Bockrath

doi:10.1038/nnano.2009.288

Researchers have seen strong coupling between the mechanical motion of a carbon nanotube and the passage of single electrons through the nanotube.

Subject terms: Carbon nanotubes and fullerenes | NEMS


Probe microscopy: A closer look at the atoms in a molecule p620

Owain Vaughan

doi:10.1038/nnano.2009.283

Subject term: Surface patterning and imaging


Nanomedicine: Sniffing out lung cancer pp621 - 622

Peter Mazzone

doi:10.1038/nnano.2009.285

A sensor consisting of an array of gold nanoparticles can distinguish the breath of lung cancer patients from the breath of healthy individuals without the need to pre-treat or dehumidify the samples.

Subject terms: Nanomedicine | Nanosensors and other devices

See also: Letter by Peng et al.


Nanopatterning: Surfaces feel the heat pp622 - 623

Amar S. Basu & Yogesh B. Gianchandani

doi:10.1038/nnano.2009.287

Thermochemical lithography is able to produce features just 28 nanometres wide on polymer surfaces.

Subject terms: Nanomaterials | Surface patterning and imaging

See also: Letter by Fenwick et al.


Spintronics: Shedding light on nanomagnets pp623 - 625

Igor Žutić & Andre Petukhov

doi:10.1038/nnano.2009.286

The magnetism of semiconductor nanocrystals can be controlled by shining light on them, which could have applications in information storage and processing.

Subject terms: Nanomagnetism and spintronics | Nanoparticles

See also: Article by Ochsenbein et al.


Biomolecular computing: Molecules that reason pp625 - 626

Darko Stefanovic

doi:10.1038/nnano.2009.284

DNA reactions can be used to implement simple logic programs.

Subject terms: Computational nanotechnology | Nanobiotechnology

See also: Letter by Ran et al.


Top

Corrections

Probing superconductivity at the nanoscale p626

doi:10.1038/nnano.2009.306


Crossing boundaries and borders p626

doi:10.1038/nnano.2009.307


Top

Progress Article

Promises, facts and challenges for carbon nanotubes in imaging and therapeutics pp627 - 633

K. Kostarelos, A. Bianco & M. Prato

doi:10.1038/nnano.2009.241

The use of carbon nanotubes in medical applications will depend on the balance between risks and benefits. This article reviews these issues for imaging and therapeutic applications.

Subject term: Nanomedicine


Top

Review

Towards a definition of inorganic nanoparticles from an environmental, health and safety perspective pp634 - 641

Mélanie Auffan, Jérôme Rose, Jean-Yves Bottero, Gregory V. Lowry, Jean-Pierre Jolivet & Mark R. Wiesner

doi:10.1038/nnano.2009.242

Inorganic nanoparticles only begin to show size-dependent effects when they have diameters below 20—30 nm. This has implications for the regulation of nanomaterials.

Subject terms: Nanoparticles | Environmental, health and safety issues


Top

Letters

Molecular implementation of simple logic programs pp642 - 648

Tom Ran, Shai Kaplan & Ehud Shapiro

doi:10.1038/nnano.2009.203

DNA strands can be used to build an autonomous programmable molecular system that is capable of performing simple logical deductions.

Subject terms: Computational nanotechnology | Nanobiotechnology

See also: News and Views by Stefanovic


Single-crystal germanium layers grown on silicon by nanowire seeding pp649 - 653

Shu Hu, Paul W. Leu, Ann F. Marshall & Paul C. McIntyre

doi:10.1038/nnano.2009.233

Germanium nanowires grown vertically on a silicon substrate are used to seed micrometre-size single-crystal germanium islands, with potential applications in three-dimensional integrated circuits.

Subject term: Synthesis and processing


Catalyst preparation for CMOS-compatible silicon nanowire synthesis pp654 - 657

Vincent T. Renard, Michael Jublot, Patrice Gergaud, Peter Cherns, Denis Rouchon, Amal Chabli & Vincent Jousseaume

doi:10.1038/nnano.2009.234

A chemical synthesis of a copper-based catalyst allows the synthesis of silicon nanowires to be compatible with standard complementary metal oxide semiconductor (CMOS) fabrication processes.

Subject terms: Nanomaterials | Synthesis and processing


Uniform exciton fluorescence from individual molecular nanotubes immobilized on solid substrates pp658 - 663

Dörthe M. Eisele, Jasper Knoester, Stefan Kirstein, Jürgen P. Rabe & David A. Vanden Bout

doi:10.1038/nnano.2009.227

Individual double-walled tubular aggregates are immobilized on a solid substrate out of solution using a drop-flow technique. Using near-field scanning optical microscopy, these aggregates are shown to have a remarkably uniform supramolecular structure.

Subject terms: Molecular self-assembly | Nanomaterials | Synthesis and processing


Thermochemical nanopatterning of organic semiconductors pp664 - 668

Oliver Fenwick, Laurent Bozec, Dan Credgington, Azzedine Hammiche, Giovanni Mattia Lazzerini, Yaron R. Silberberg & Franco Cacialli

doi:10.1038/nnano.2009.254

Structures with dimensions of 28 nm have been produced in semiconducting polymers using a thermochemical approach to patterning.

Subject terms: Nanomaterials | Surface patterning and imaging

See also: News and Views by Basu & Gianchandani


Diagnosing lung cancer in exhaled breath using gold nanoparticles pp669 - 673

Gang Peng, Ulrike Tisch, Orna Adams, Meggie Hakim, Nisrean Shehada, Yoav Y. Broza, Salem Billan, Roxolyana Abdah-Bortnyak, Abraham Kuten & Hossam Haick

doi:10.1038/nnano.2009.235

An array of nine sensors made up of gold nanoparticles functionalized with different organic groups can distinguish the breath of lung cancer patients from healthy individuals in an atmosphere of high humidity.

Subject terms: Nanomedicine | Nanosensors and other devices

See also: News and Views by Mazzone


Top

Articles

Monolayer coverage and channel length set the mobility in self-assembled monolayer field-effect transistors pp674 - 680

Simon G. J. Mathijssen, Edsger C. P. Smits, Paul A. van Hal, Harry J. Wondergem, Sergei A. Ponomarenko, Armin Moser, Roland Resel, Peter A. Bobbert, Martijn Kemerink, René A. J. Janssen & Dago M. de Leeuw

doi:10.1038/nnano.2009.201

The mobility of field-effect transistors made from self-assembled monolayers of liquid-crystal molecules depends on channel length only when the monolayer coverage is incomplete.

Subject terms: Electronic properties and devices | Molecular self-assembly


Charge-controlled magnetism in colloidal doped semiconductor nanocrystals pp681 - 687

Stefan T. Ochsenbein, Yong Feng, Kelly M. Whitaker, Ekaterina Badaeva, William K. Liu, Xiaosong Li & Daniel R. Gamelin

doi:10.1038/nnano.2009.221

The room-temperature magnetism of colloidal doped semiconductor nanocrystals can be manipulated reversibly by controlling their electric charge state, making such materials attractive for potential spintronics applications.

Subject terms: Nanomagnetism and spintronics | Nanoparticles

See also: News and Views by Žutić & Petukhov


Golden carbon nanotubes as multimodal photoacoustic and photothermal high-contrast molecular agents pp688 - 694

Jin-Woo Kim, Ekaterina I. Galanzha, Evgeny V. Shashkov, Hyung-Mo Moon & Vladimir P. Zharov

doi:10.1038/nnano.2009.231

Carbon nanotubes coated with a thin layer of gold can be a good alternative to fluorescent labels and gold nanoparticles for non-invasive in vivo photoacoustic and photothermal imaging.

Subject terms: Nanomedicine | Nanoparticles


Top