Table of contents


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Editorial

Hitching a ride with motor proteins p1

doi:10.1038/nnano.2013.308

The biological machines that operate in cells are frequently a starting point for the development of synthetic molecular motors.


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Commentary

The emergence of the nanobiotechnology industry pp2 - 5

Elicia Maine, V. J. Thomas, Martin Bliemel, Armstrong Murira & James Utterback

doi:10.1038/nnano.2013.288

The confluence of nanotechnology and biotechnology provides significant commercial opportunities. By identifying, classifying and tracking firms with capabilities in both biotechnology and nanotechnology over time, we analyse the emergence and evolution of the global nanobiotechnology industry.


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Thesis

Does scale matter at the nanoscale? pp6 - 7

Chris Toumey

doi:10.1038/nnano.2013.289

Eric Drexler has restated his vision of nanotechnology in a new book. Chris Toumey explores its apparent contradictions.


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Research Highlights

Our choice from the recent literature p8

doi:10.1038/nnano.2013.310


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News and Views

Molecular motors: Myosins move ahead of the pack pp9 - 10

David S. Tsao & Michael R. Diehl

doi:10.1038/nnano.2013.298

An artificial motor protein with loosely coordinated subunits can travel at high speed and over long distances.

See also: Letter by Schindler et al.


Molecular motors: On track with nanotubes pp10 - 11

Anand Jagota

doi:10.1038/nnano.2013.299

DNA motors can transport CdS nanoparticles along tracks made of carbon nanotubes.

See also: Letter by Cha et al.


Molecular motors: DNA takes control pp11 - 12

Arne Gennerich

doi:10.1038/nnano.2013.300

Polarized arrays of microtubules can be assembled and disassembled using motor proteins that are programmed by DNA strands.

See also: Letter by Wollman et al.


Magnetic properties: The exchange changes everything pp13 - 14

Wulf Wulfhekel

doi:10.1038/nnano.2013.295

The exchange interaction between the electron spin in individual magnetic atoms and the spin of electrons in a non-magnetic substrate has a strong effect on the magnetic anisotropy of the atoms.

See also: Letter by Oberg et al.


Magnetic devices: Clocking with no field pp14 - 15

Michael Niemier

doi:10.1038/nnano.2013.296

Nanomagnet logic devices that do not require a magnetic field for clocking can now be fabricated.

See also: Letter by Bhowmik et al.


Fluorescent nanoparticles: Diamonds from outer space pp16 - 17

Christoph Becher

doi:10.1038/nnano.2013.287

Stable fluorescence is observed in nanodiamonds of molecular dimensions extracted from a meteorite.

See also: Letter by Vlasov et al.


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Review

Silicon nanostructures for photonics and photovoltaics pp19 - 32

Francesco Priolo, Tom Gregorkiewicz, Matteo Galli & Thomas F. Krauss

doi:10.1038/nnano.2013.271

This Review reports the state of the art for silicon nanostructures used in photonics and photovoltaic applications, and highlights the challenges for making silicon a high-performing photonic material.


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Letters

Engineering myosins for long-range transport on actin filaments pp33 - 38

Tony D. Schindler, Lu Chen, Paul Lebel, Muneaki Nakamura & Zev Bryant

doi:10.1038/nnano.2013.229

Diverse myosins can be modified by non-natural means to obtain high processivity on actin filaments.

See also: News and Views by Tsao & Diehl


A synthetic DNA motor that transports nanoparticles along carbon nanotubes pp39 - 43

Tae-Gon Cha, Jing Pan, Haorong Chen, Janette Salgado, Xiang Li, Chengde Mao & Jong Hyun Choi

doi:10.1038/nnano.2013.257

Motors based on RNA-cleaving DNA enzymes can transport cadmium sulphide nanocrystals along single-walled carbon nanotubes.

See also: News and Views by Jagota


Transport and self-organization across different length scales powered by motor proteins and programmed by DNA pp44 - 47

Adam J. M. Wollman, Carlos Sanchez-Cano, Helen M. J. Carstairs, Robert A. Cross & Andrew J. Turberfield

doi:10.1038/nnano.2013.230

Kinesin motor proteins conjugated to DNA nanostructures can be used to assemble a network of microtubule tracks, and to control the loading, active concentration and unloading of cargo on this network, or trigger its disassembly.

See also: News and Views by Gennerich


Enhancing spontaneous emission rates of molecules using nanopatterned multilayer hyperbolic metamaterials pp48 - 53

Dylan Lu, Jimmy J. Kan, Eric E. Fullerton & Zhaowei Liu

doi:10.1038/nnano.2013.276

The spontaneous emission rate and emission intensity of dye molecules are significantly enhanced by using a nanopatterned multilayer hyperbolic metamaterial.


Molecular-sized fluorescent nanodiamonds pp54 - 58

Igor I. Vlasov, Andrey A. Shiryaev, Torsten Rendler, Steffen Steinert, Sang-Yun Lee, Denis Antonov, Márton Vörös, Fedor Jelezko, Anatolii V. Fisenko, Lubov F. Semjonova, Johannes Biskupek, Ute Kaiser, Oleg I. Lebedev, Ilmo Sildos, Philip. R. Hemmer, Vitaly I. Konov, Adam Gali & Jörg Wrachtrup

doi:10.1038/nnano.2013.255

Diamond nanoparticles containing only about 400 atoms emit bright fluorescence due to silicon vacancy defects.

See also: News and Views by Becher


Spin Hall effect clocking of nanomagnetic logic without a magnetic field pp59 - 63

Debanjan Bhowmik, Long You & Sayeef Salahuddin

doi:10.1038/nnano.2013.241

Nanomagnetic logic elements that do not require a magnetic field for clocking are now fabricated.

See also: News and Views by Niemier


Control of single-spin magnetic anisotropy by exchange coupling pp64 - 68

Jenny C. Oberg, M. Reyes Calvo, Fernando Delgado, María Moro-Lagares, David Serrate, David Jacob, Joaquín Fernández-Rossier & Cyrus F. Hirjibehedin

doi:10.1038/nnano.2013.264

The spin excitation energy and the magnetic anisotropy of individual atoms can be modified by varying the exchange coupling of the atomic spin to metallic leads.

See also: News and Views by Wulfhekel


Efficient solar water-splitting using a nanocrystalline CoO photocatalyst pp69 - 73

Longb Liao, Qiuhui Zhang, Zhihua Su, Zhongzheng Zhao, Yanan Wang, Yang Li, Xiaoxiang Lu, Dongguang Wei, Guoying Feng, Qingkai Yu, Xiaojun Cai, Jimin Zhao, Zhifeng Ren, Hui Fang, Francisco Robles-Hernandez, Steven Baldelli & Jiming Bao

doi:10.1038/nnano.2013.272

Cobalt oxide nanoparticles can carry out overall water splitting with a solar-to-hydrogen efficiency of around 5%.


Hierarchical assembly of metal nanoparticles, quantum dots and organic dyes using DNA origami scaffolds pp74 - 78

Robert Schreiber, Jaekwon Do, Eva-Maria Roller, Tao Zhang, Verena J. Schüller, Philipp C. Nickels, Jochen Feldmann & Tim Liedl

doi:10.1038/nnano.2013.253

Rigid DNA origami scaffolds can be used to hierarchically organize metal nanoparticles, quantum dots and organic dyes into functional nanoclusters that have a planet–satellite-type structure.


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Article

Spin-resolved Andreev levels and parity crossings in hybrid superconductor–semiconductor nanostructures pp79 - 84

Eduardo J. H. Lee, Xiaocheng Jiang, Manuel Houzet, Ramón Aguado, Charles M. Lieber & Silvano De Franceschi

doi:10.1038/nnano.2013.267

A study of the magnetic fine structure of the electronic states in a semiconductor quantum dot coupled to a superconducting contact highlights important elements that should be taken into account in the search for Majorana modes in the solid state.


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