Nature Nanotechnology Contents December 2014 Volume 9 Number 12 pp 949-1064

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Advertisement Select Si, Ge, Au and more for Advanced FIB Nanofabrication!  Visit Raith's New Website and learn more about FIB Nanofabrication and IONselect - ionLiNE's New Multi-Species Ion Beam Technology. TABLE OF CONTENTS December 2014 Volume 9, Issue 12 Editorial Commentary Thesis Research Highlights News and Views Corrections Review Letters Articles Erratum In The Classroom Subscribe   Facebook   RSS   Recommend to library   Twitter   Editorial Top Joining the reproducibility initiative   p949 doi:10.1038/nnano.2014.287 We are introducing a checklist for life sciences articles starting in January 2015 in order to improve transparency in reporting. Commentary Top The promise and challenge of nanostructured solar cells   pp951 - 954 Matthew C. Beard, Joseph M. Luther and Arthur J. Nozik doi:10.1038/nnano.2014.292 Nanoscale objects provide opportunities to revolutionize the conversion of solar energy by enabling highly efficient and low-cost devices. Challenges associated with demonstrating high efficiency and stability are now being addressed in the research community. Thesis Top Could we 3D print an artificial mind?   pp955 - 956 Andrew D. Maynard doi:10.1038/nnano.2014.294 3D printing is allowing more complex three-dimensional structures to be manufactured than ever before. Could the convergence between this technology and nanotechnology eventually usher in a new era of artificial intelligence, asks Andrew D. Maynard. Research Highlights Top Our choice from the recent literature   p957 doi:10.1038/nnano.2014.300 News and Views Top Cancer biomarkers: Detected twice for good measure   pp959 - 960 Giovanni Longo doi:10.1038/nnano.2014.289 A two-step sandwich assay, which can be both mechanically and optically detected, identifies cancer biomarkers in serum with high sensitivity and selectivity. See also: Article by Kosaka et al. Molecular electronics: A DNA that conducts   pp960 - 961 Elke Scheer doi:10.1038/nnano.2014.293 Experiments with conducting atomic force microscopy provide a clear demonstration of long-range charge transport in G-quadruplex DNA molecules, and allow a hopping transport model to be developed that could also be applied to other conductive polymers. See also: Article by Livshits et al. Batteries: Knowing when small is better   pp962 - 963 Paul V. Braun and Ralph G. Nuzzo doi:10.1038/nnano.2014.263 A battery fabricated within a ceramic nanopore can be used for studying nanoscale electrochemical effects. See also: Article by Liu et al. Nanomechanics: Nanotubes resound better   pp963 - 964 Ilya Khivrich and Shahal Ilani doi:10.1038/nnano.2014.297 Advanced measurement techniques combined with a tightly controlled noise environment have enabled the creation of carbon nanotube-based mechanical resonators with quality factors of up to five million. See also: Letter by Moser et al. Molecular spintronics: Topology communicates   pp965 - 966 Mirko Cinchetti doi:10.1038/nnano.2014.284 A magnetic skyrmion lattice can mediate transport of spin information between hybrid nano-objects that are formed from organic molecules and atoms in an iron monolayer. See also: Article by Brede et al. Quantum computation: Silicon comes back   pp966 - 968 Lars R. Schreiber and Hendrik Bluhm doi:10.1038/nnano.2014.249 The extraordinary long coherence times and high-fidelity manipulation of electron spins trapped in isotopically purified silicon could be an essential step towards the realization of a solid-state quantum computer. See also: Letter by Muhonen et al. | Letter by Veldhorst et al. | Letter by Kawakami et al. Nanotechnology JOBS of the week Postdoctoral Fellow - Molecular Biology / Nanotechnology University of Michigan Postdoc position in nanotechnology, optics, photonics Emory University Technical Assistant MIT PhD studentship in Chemistry University of Birmingham Faculty Position Lehigh University More Science jobs from Nanotechnology EVENT ICNFA'15 - 6th International Conference on Nanotechnology: Fundamentals and Applications 15.07.15 Barcelona, Spain More science events from Corrections Top Correction   p968 doi:10.1038/nnano.2014.286 Correction   p968 doi:10.1038/nnano.2014.295 Review Top Advancing the speed, sensitivity and accuracy of biomolecular detection using multi-length-scale engineering   pp969 - 980 Shana O. Kelley, Chad A. Mirkin, David R. Walt, Rustem F. Ismagilov, Mehmet Toner and Edward H. Sargent doi:10.1038/nnano.2014.261 This article reviews the different strategies and devices that combine nanoscale and microscale materials to bring about faster, more sensitive and reliable diagnostic results in clinical medicine. Letters Top An addressable quantum dot qubit with fault-tolerant control-fidelity   pp981 - 985 M. Veldhorst, J. C. C. Hwang, C. H. Yang, A. W. Leenstra, B. de Ronde, J. P. Dehollain, J. T. Muhonen, F. E. Hudson, K. M. Itoh, A. Morello and A. S. Dzurak doi:10.1038/nnano.2014.216 A quantum bit that can be addressed with a gate voltage and has a very high control-fidelity can be realized in an electrically defined silicon quantum dot. See also: News and Views by Schreiber & Bluhm | Letter by Muhonen et al. Storing quantum information for 30 seconds in a nanoelectronic device   pp986 - 991 Juha T. Muhonen, Juan P. Dehollain, Arne Laucht, Fay E. Hudson, Rachpon Kalra, Takeharu Sekiguchi, Kohei M. Itoh, David N. Jamieson, Jeffrey C. McCallum, Andrew S. Dzurak and Andrea Morello doi:10.1038/nnano.2014.211 The coherent operation of individual 31P electron and nuclear spin qubits in a 28Si substrate shows new benchmark decoherence times and provides essential information on the dechorence mechanism. See also: News and Views by Schreiber & Bluhm | Letter by Veldhorst et al. Stable magnetic droplet solitons in spin-transfer nanocontacts   pp992 - 996 Ferran Macià, Dirk Backes and Andrew D. Kent doi:10.1038/nnano.2014.255 Magnetic droplet solitons are shown to be stable excitations that can be controlled by applied magnetic fields and electrical currents in thin films with perpendicular magnetic anisotropy. Nanoscale spin rectifiers controlled by the Stark effect   pp997 - 1001 Francesco Rossella, Andrea Bertoni, Daniele Ercolani, Massimo Rontani, Lucia Sorba, Fabio Beltram and Stefano Roddaro doi:10.1038/nnano.2014.251 The Stark effect can be used to address two qubits independently that are represented by semiconductor quantum dots, placed only a few nanometres apart. Feedback-driven self-assembly of symmetry-breaking optical metamaterials in solution   pp1002 - 1006 Sui Yang, Xingjie Ni, Xiaobo Yin, Boubacar Kante, Peng Zhang, Jia Zhu, Yuan Wang and Xiang Zhang doi:10.1038/nnano.2014.243 Self-assembling plasmonic dimers with a feedback mechanism enable selection of specific symmetry-breaking optical metamaterial structures in solution. Nanotube mechanical resonators with quality factors of up to 5 million   pp1007 - 1011 J. Moser, A. Eichler, J. Güttinger, M. I. Dykman and A. Bachtold doi:10.1038/nnano.2014.234 Careful, low-noise measurement techniques allow record quality factors to be determined in ultraclean, suspended carbon nanotube resonators, which are comparable to those of much larger resonators. See also: News and Views by Khivrich & Ilani Visualization of charge propagation along individual pili proteins using ambient electrostatic force microscopy   pp1012 - 1017 Nikhil S. Malvankar, Sibel Ebru Yalcin, Mark T. Tuominen and Derek R. Lovley doi:10.1038/nnano.2014.236 Electrostatic force microscopy can directly observe charge flow along native protein nanofilaments that are used in bacterial respiration and cell-to-cell electron exchange. Articles Top Long-range magnetic coupling between nanoscale organic–metal hybrids mediated by a nanoskyrmion lattice   pp1018 - 1023 Jens Brede, Nicolae Atodiresei, Vasile Caciuc, Maciej Bazarnik, Ali Al-Zubi, Stefan Blügel and Roland Wiesendanger doi:10.1038/nnano.2014.235 Carbon nanosystems on an iron monolayer create organic–metal hybrids with tunable magnetic properties that can be magnetically coupled to each other over nanometre distances. See also: News and Views by Cinchetti Lateral epitaxial growth of two-dimensional layered semiconductor heterojunctions   pp1024 - 1030 Xidong Duan, Chen Wang, Jonathan C. Shaw, Rui Cheng, Yu Chen, Honglai Li, Xueping Wu, Ying Tang, Qinling Zhang, Anlian Pan, Jianhui Jiang, Ruqing Yu, Yu Huang and Xiangfeng Duan doi:10.1038/nnano.2014.222 Different two-dimensional materials can be grown epitaxially side by side to create one-layer-thick p–n junctions. An all-in-one nanopore battery array   pp1031 - 1039 Chanyuan Liu, Eleanor I. Gillette, Xinyi Chen, Alexander J. Pearse, Alexander C. Kozen, Marshall A. Schroeder, Keith E. Gregorczyk, Sang Bok Lee and Gary W. Rubloff doi:10.1038/nnano.2014.247 An array of interconnected nanobatteries templated in anodic aluminium oxide pores shows high capacity retention during fast cycling and excellent cyclability while operating at the maximum theoretical capacity of the storage material. See also: News and Views by Braun & Nuzzo Long-range charge transport in single G-quadruplex DNA molecules   pp1040 - 1046 Gideon I. Livshits, Avigail Stern, Dvir Rotem, Natalia Borovok, Gennady Eidelshtein, Agostino Migliore, Erika Penzo, Shalom J. Wind, Rosa Di Felice, Spiros S. Skourtis, Juan Carlos Cuevas, Leonid Gurevich, Alexander B. Kotlyar and Danny Porath doi:10.1038/nnano.2014.246 G-quadruplex DNA molecules adsorbed on a mica substrate can transport currents of more than 100 pA over distances of more than 100 nm by means of a hopping mechanism. See also: News and Views by Scheer Detection of cancer biomarkers in serum using a hybrid mechanical and optoplasmonic nanosensor   pp1047 - 1053 P. M. Kosaka, V. Pini, J. J. Ruz, R. A. da Silva, M. U. González, D. Ramos, M. Calleja and J. Tamayo doi:10.1038/nnano.2014.250 A sandwich assay labelled with gold nanoparticles can be mechanically and optically detected with the help of a silicon cantilever, allowing cancer biomarkers to be identified in serum at very low concentrations. See also: News and Views by Longo Squalenoyl adenosine nanoparticles provide neuroprotection after stroke and spinal cord injury   pp1054 - 1062 Alice Gaudin, Müge Yemisci, Hakan Eroglu, Sinda Lepetre-Mouelhi, Omer Faruk Turkoglu, Buket Dönmez-Demir, Seçil Caban, Mustafa Fevzi Sargon, Sébastien Garcia-Argote, Grégory Pieters, Olivier Loreau, Bernard Rousseau, Oya Tagit, Niko Hildebrandt, Yannick Le Dantec, Julie Mougin, Sabrina Valetti, Hélène Chacun, Valérie Nicolas, Didier Desmaële, Karine Andrieux, Yilmaz Capan, Turgay Dalkara and Patrick Couvreur doi:10.1038/nnano.2014.274 The systemic circulation time of adenosine is prolonged by forming nanoassemblies with squalene, and this can improve neurologic recovery in mice affected by a stroke or spinal cord injury. Erratum Top Erratum: Electronics based on two-dimensional materials   p1063 Gianluca Fiori, Francesco Bonaccorso, Giuseppe Iannaccone, Tomás Palacios, Daniel Neumaier, Alan Seabaugh, Sanjay K. Banerjee and Luigi Colombo doi:10.1038/nnano.2014.283 In The Classroom Top Mission: Nano   p1064 Ennio Tasciotti doi:10.1038/nnano.2014.290 Ennio Tasciotti describes an interactive video game app that helps children learn the concepts of nanomedicine, and hopes to expand it by attracting like-minded scientists, educators and investors. Top Natureevents is a fully searchable, multi-disciplinary database designed to maximise exposure for events organisers. The contents of the Natureevents Directory are now live. The digital version is available here. Find the latest scientific conferences, courses, meetings and symposia on natureevents.com. For event advertising opportunities across the Nature Publishing Group portfolio please contact natureevents@nature.com More Nature Events

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