Advance online publication


The latest research papers, published online ahead of print. These online versions are definitive and may be cited using the digital object identifier (DOI).

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Letters

In vivo magnetic enrichment and multiplex photoacoustic detection of circulating tumour cells

Ekaterina I. Galanzha, Evgeny V. Shashkov, Thomas Kelly, Jin-Woo Kim, Lily Yang & Vladimir P. Zharov

Published online: 15 November 2009 | doi:10.1038/nnano.2009.333

Circulating tumour cells can be captured in the bloodstream by magnetic nanoparticles, and the use of gold-plated carbon nanotubes allows in vivo multiplex photoacoustic detection of these cells.


Efficient narrow-band light emission from a single carbon nanotube p–n diode

Thomas Mueller, Megumi Kinoshita, Mathias Steiner, Vasili Perebeinos, Ageeth A. Bol, Damon B. Farmer & Phaedon Avouris

Published online: 15 November 2009 | doi:10.1038/nnano.2009.319

Electrically induced light emission from an individual carbon nanotube p–n diode is both more efficient and has a narrower spectrum than previously demonstrated, allowing emission from free and localized excitons to be identified.


A tunable phonon–exciton Fano system in bilayer graphene

Tsung-Ta Tang, Yuanbo Zhang, Cheol-Hwan Park, Baisong Geng, Caglar Girit, Zhao Hao, Michael C. Martin, Alex Zettl, Michael F. Crommie, Steven G. Louie, Y. Ron Shen & Feng Wang

Published online: 15 November 2009 | doi:10.1038/nnano.2009.334

A new hybrid phonon–exciton excited state in bilayer graphene can be tuned electrically, with possible application to phonon lasers.


Design considerations for tumour-targeted nanoparticles

Hak Soo Choi, Wenhao Liu, Fangbing Liu, Khaled Nasr, Preeti Misra, Moungi G. Bawendi & John V. Frangioni

Published online: 01 November 2009 | doi:10.1038/nnano.2009.314

Nanoparticles functionalized with ligands that target tumours can be cleared from the body through the kidneys if they have a hydrodynamic diameter of less than 5.5 nm.


True solutions of single-walled carbon nanotubes for assembly into macroscopic materials

Virginia A. Davis, A. Nicholas G. Parra-Vasquez, Micah J. Green, Pradeep K. Rai, Natnael Behabtu, Valentin Prieto, Richard D. Booker, Judith Schmidt, Ellina Kesselman, Wei Zhou, Hua Fan, W. Wade Adams, Robert H. Hauge, John E. Fischer, Yachin Cohen, Yeshayahu Talmon, Richard E. Smalley & Matteo Pasquali

Published online: 01 November 2009 | doi:10.1038/nnano.2009.302

The phase diagram of single-walled carbon nanotubes in superacids is reported, including true solutions, which are suitable for processing into aligned nanomaterials.


Nanomechanical motion measured with an imprecision below that at the standard quantum limit

J. D. Teufel, T. Donner, M. A. Castellanos-Beltran, J. W. Harlow & K. W. Lehnert

Published online: 01 November 2009 | doi:10.1038/nnano.2009.343

The motion of a nanomechanical oscillator has been measured with ultrahigh precision using a microwave interferometer that operates close to the shot-noise limit.


Self-assembled arrays of peptide nanotubes by vapour deposition

Lihi Adler-Abramovich, Daniel Aronov, Peter Beker, Maya Yevnin, Shiri Stempler, Ludmila Buzhansky, Gil Rosenman & Ehud Gazit

Published online: 18 October 2009 | doi:10.1038/nnano.2009.298

Large arrays of aligned aromatic peptide nanotubes can be fabricated using vapour deposition methods, and used for energy storage and microfluidic devices.


Single-crystalline kinked semiconductor nanowire superstructures

Bozhi Tian, Ping Xie, Thomas J. Kempa, David C. Bell & Charles M. Lieber

Published online: 18 October 2009 | doi:10.1038/nnano.2009.304

Zigzag nanowires containing field-effect transistors and p–n diodes at the kinks have been made with a new growth technique.


Ultrafast graphene photodetector

Fengnian Xia, Thomas Mueller, Yu-ming Lin, Alberto Valdes-Garcia & Phaedon Avouris

Published online: 11 October 2009 | doi:10.1038/nnano.2009.292

Field-effect transistors made from graphene act as photodetectors at frequencies up to 40 GHz, demonstrating the advantage offered by graphene for photonic applications.


Atomic-scale mapping of quantum dots formed by droplet epitaxy

Divine P. Kumah, Sergey Shusterman, Yossi Paltiel, Yizhak Yacoby & Roy Clarke

Published online: 27 September 2009 | doi:10.1038/nnano.2009.271

Semiconductor quantum dots grown by droplet epitaxy have been characterized with atomic resolution using direct X-ray methods, showing a core–shell structure with a composition that is strongly influenced by the substrate.


Programming the detection limits of biosensors through controlled nanostructuring

Leyla Soleymani, Zhichao Fang, Edward H. Sargent & Shana O. Kelley

Published online: 27 September 2009 | doi:10.1038/nnano.2009.276

Creating fine nanostructures on sensing electrodes can improve and expand the detection sensitivities of biosensors for nucleic acids


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Articles

Self-organized photosynthetic nanoparticle for cell-free hydrogen production

Ifeyinwa J. Iwuchukwu, Michael Vaughn, Natalie Myers, Hugh O'Neill, Paul Frymier & Barry D. Bruce

Published online: 08 November 2009 | doi:10.1038/nnano.2009.315

Photosynthetic nanoparticles obtained from a thermophilic bacterium can produce a stable supply of hydrogen at temperatures up to 55 °C with a yield that is approximately 25 times greater than current hydrogen production strategies.


Self-assembly of carbon nanotubes into two-dimensional geometries using DNA origami templates

Hareem T. Maune, Si-ping Han, Robert D. Barish, Marc Bockrath, William A. Goddard III, Paul W. K. Rothemund & Erik Winfree

Published online: 08 November 2009 | doi:10.1038/nnano.2009.311

Single-walled carbon nanotubes can be self-assembled into cross junctions using DNA origami, establishing these structures as programmable nanobreadboards.


Effective repair of traumatically injured spinal cord by nanoscale block copolymer micelles

Yunzhou Shi, Sungwon Kim, Terry B. Huff, Richard B. Borgens, Kinam Park, Riyi Shi & Ji-Xin Cheng

Published online: 08 November 2009 | doi:10.1038/nnano.2009.303

Tiny copolymer micelles can effectively restore locomotion in rats after spinal cord injury.


Nanoparticles can cause DNA damage across a cellular barrier

Gevdeep Bhabra, Aman Sood, Brenton Fisher, Laura Cartwright, Margaret Saunders, William Howard Evans, Annmarie Surprenant, Gloria Lopez-Castejon, Stephen Mann, Sean A. Davis, Lauren A. Hails, Eileen Ingham, Paul Verkade, Jon Lane, Kate Heesom, Roger Newson & Charles Patrick Case

Published online: 05 November 2009 | doi:10.1038/nnano.2009.313

Nanoparticles can damage cellular DNA from a distance without entering the cells, suggesting the need to consider indirect effects when evaluating nanoparticle safety.


Deterministic control of ferroelastic switching in multiferroic materials

N. Balke, S. Choudhury, S. Jesse, M. Huijben, Y. H. Chu, A. P. Baddorf, L. Q. Chen, R. Ramesh & S. V. Kalinin

Published online: 11 October 2009 | doi:10.1038/nnano.2009.293

Ferroelectric domains in multiferroic materials can be engineered through the lateral motion of a biased scanning probe tip.


Performance of monolayer graphene nanomechanical resonators with electrical readout

Changyao Chen, Sami Rosenblatt, Kirill I. Bolotin, William Kalb, Philip Kim, Ioannis Kymissis, Horst L. Stormer, Tony F. Heinz & James Hone

Published online: 20 September 2009 | doi:10.1038/nnano.2009.267

A detailed understanding of the response of graphene resonators to changes in mass and temperature could lead to the development of ultrasensitive mass detectors and other nanoelectromechanical systems.


Until print versions of AOP papers are published, they should be cited in the style "Author(s) Nature Nanotechnology advance online publication, day month year (doi:10.1038/nnanoXXXXX)". Once the print version (identical to the AOP) is published, it should be cited as follows: "Author(s) Nature Nanotechnology volume, page (year); advance online publication, (doi:10.1038/nnanoXXXXX)".

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