Nature Nanotechnology Contents June 2015 Volume 10 Number 6 pp481-564

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Advertisement Advanced Nanolithography and analytical SEM in a single system? Visit Raith's New Website and learn more about the perfect EBL-SEM hybrid PIONEER Two. TABLE OF CONTENTS June 2015 Volume 10, Issue 6 Editorials Thesis Research Highlights News and Views Letters Articles Retraction Addendum In The Classroom Subscribe   Facebook   RSS   Recommend to library   Twitter   Advertisement Nature Communications is now fully open access All new submissions if accepted, will be published open access and an article processing charge will apply. For more information visit the website. Visit our open access funding page or contact openaccess@nature.com to learn more on APC funding.   Editorials Top Single photons for all   p481 doi:10.1038/nnano.2015.127 The observation of single-photon emission from defects in a two-dimensional semiconductor could lead to rapid developments in the pursuit of reliable and low-cost single-photon sources. Notes on a retraction   p481 doi:10.1038/nnano.2015.128 Correcting the scientific literature with the help of the research community. Thesis Top Learning from the past   pp482 - 483 Andrew D. Maynard doi:10.1038/nnano.2015.120 When it comes to safety, the jury's still out on which nanoparticle characteristics we should be measuring. But, as Andrew D. Maynard explains, there's a rich history dating back over a hundred years on how we measure them. Research Highlights Top Our choice from the recent literature   p484 doi:10.1038/nnano.2015.121 News and Views Top Metal dichalcogenides: Two dimensions and one photon   pp485 - 486 V. Perebeinos doi:10.1038/nnano.2015.104 Single-photon sources have been demonstrated in two-dimensional semiconductors. See also: Letter by Srivastava et al. | Letter by Koperski et al. | Letter by He et al. | Letter by Chakraborty et al. Single-molecule diodes: The environment does the trick   pp486 - 487 Juan Carlos Cuevas doi:10.1038/nnano.2015.98 Single-molecule junctions with high rectification ratios can be realized by exposing different electrode surface areas to an ionic liquid. See also: Letter by Capozzi et al. Artificial molecular machines: Two steps uphill   pp488 - 489 Steve Goldup doi:10.1038/nnano.2015.116 An axle-shaped molecule pumps charged rings from solution into an alkyl collection unit, a mechanism that, in two repetitive cycles, takes the system increasingly further from equilibrium. See also: Article by Cheng et al. Nanomechanics: Rocking at the nanoscale   pp489 - 490 Ignacio Wilson-Rae doi:10.1038/nnano.2015.119 Three different mechanical waveforms are generated at the nanoscale by Fourier synthesis of surface acoustic waves. See also: Letter by Schülein et al. Nanotechnology JOBS of the week Postdoctoral Fellow in Translational Diagnostics Houston Methodist Research Institute Postdoc in albumin-based drug delivery Aarhus 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 Letters Top Optically active quantum dots in monolayer WSe2   pp491 - 496 Ajit Srivastava, Meinrad Sidler, Adrien V. Allain, Dominik S. Lembke, Andras Kis and A. Imamoğlu doi:10.1038/nnano.2015.60 Zero-dimensional photonic quantum emitters can be realized using defects in the two-dimensional dichalcogenides. See also: News and Views by Perebeinos Single quantum emitters in monolayer semiconductors   pp497 - 502 Yu-Ming He, Genevieve Clark, John R. Schaibley, Yu He, Ming-Cheng Chen, Yu-Jia Wei, Xing Ding, Qiang Zhang, Wang Yao, Xiaodong Xu, Chao-Yang Lu and Jian-Wei Pan doi:10.1038/nnano.2015.75 Emission of single photons can be achieved by using defects in two-dimensional crystals as a source of luminescence. See also: News and Views by Perebeinos Single photon emitters in exfoliated WSe2 structures   pp503 - 506 M. Koperski, K. Nogajewski, A. Arora, V. Cherkez, P. Mallet, J.-Y. Veuillen, J. Marcus, P. Kossacki and M. Potemski doi:10.1038/nnano.2015.67 Single photon emitters can form at the interfaces between layers of WSe2. See also: News and Views by Perebeinos Voltage-controlled quantum light from an atomically thin semiconductor   pp507 - 511 Chitraleema Chakraborty, Laura Kinnischtzke, Kenneth M. Goodfellow, Ryan Beams and A. Nick Vamivakas doi:10.1038/nnano.2015.79 Single photons can be emitted by defects in WSe2 with emission properties that can be controlled through an applied voltage. See also: News and Views by Perebeinos Fourier synthesis of radiofrequency nanomechanical pulses with different shapes   pp512 - 516 Florian J. R. Schülein, Eugenio Zallo, Paola Atkinson, Oliver G. Schmidt, Rinaldo Trotta, Armando Rastelli, Achim Wixforth and Hubert J. Krenner doi:10.1038/nnano.2015.72 Four mechanical waveforms at the nanoscale have been electrically generated by Fourier synthesis of a monochromatic surface acoustic wave and three of its harmonics. See also: News and Views by Wilson-Rae Highly anisotropic and robust excitons in monolayer black phosphorus   pp517 - 521 Xiaomu Wang, Aaron M. Jones, Kyle L. Seyler, Vy Tran, Yichen Jia, Huan Zhao, Han Wang, Li Yang, Xiaodong Xu and Fengnian Xia doi:10.1038/nnano.2015.71 Polarization-resolved photoluminescence measurements reveal the anisotropic character of excitons in monolayer black phosphorus, which are found to have a large binding energy. Single-molecule diodes with high rectification ratios through environmental control   pp522 - 527 Brian Capozzi, Jianlong Xia, Olgun Adak, Emma J. Dell, Zhen-Fei Liu, Jeffrey C. Taylor, Jeffrey B. Neaton, Luis M. Campos and Latha Venkataraman doi:10.1038/nnano.2015.97 Single-molecule diodes with rectification ratios over 200 at low voltages can be obtained with symmetric molecules by creating an environmental asymmetry using electric double-layers. See also: News and Views by Cuevas Self-replication of DNA rings   pp528 - 533 Junghoon Kim, Junwye Lee, Shogo Hamada, Satoshi Murata and Sung Ha Park doi:10.1038/nnano.2015.87 DNA-based T-motifs that can self-assemble into ring structures can be designed to self-replicate through toehold-mediated strand displacement reactions. Articles Top Multi-terminal transport measurements of MoS2 using a van der Waals heterostructure device platform   pp534 - 540 Xu Cui, Gwan-Hyoung Lee, Young Duck Kim, Ghidewon Arefe, Pinshane Y. Huang, Chul-Ho Lee, Daniel A. Chenet, Xian Zhang, Lei Wang, Fan Ye, Filippo Pizzocchero, Bjarke S. Jessen, Kenji Watanabe, Takashi Taniguchi, David A. Muller, Tony Low, Philip Kim and James Hone doi:10.1038/nnano.2015.70 High charge-carrier mobility that enables the observation of quantum oscillation is reported in mono- and few-layer MoS2 encapsulated and contacted by other two-dimensional materials. High-efficiency resonant amplification of weak magnetic fields for single spin magnetometry at room temperature   pp541 - 546 Luka Trifunovic, Fabio L. Pedrocchi, Silas Hoffman, Patrick Maletinsky, Amir Yacoby and Daniel Loss doi:10.1038/nnano.2015.74 The sensitivity of a magnetometer based on a nitrogen–vacancy centre can be enhanced by three orders of magnitude by using a ferromagnetic nanoparticle. An artificial molecular pump   pp547 - 553 Chuyang Cheng, Paul R. McGonigal, Severin T. Schneebeli, Hao Li, Nicolaas A. Vermeulen, Chenfeng Ke and J. Fraser Stoddart doi:10.1038/nnano.2015.96 When supplied with redox energy, a dumbbell-shaped molecule can take small charged molecules from solution and thread them around an oligomethylene chain. See also: News and Views by Goldup Vertical nanopillars for in situ probing of nuclear mechanics in adherent cells   pp554 - 562 Lindsey Hanson, Wenting Zhao, Hsin-Ya Lou, Ziliang Carter Lin, Seok Woo Lee, Praveen Chowdary, Yi Cui and Bianxiao Cui doi:10.1038/nnano.2015.88 Arrays of vertical nanopillars are used to study the deformability of the cell nucleus and its mechanical coupling with the cell membrane. Retraction Top Retraction: DNA sequencing using electrical conductance measurements of a DNA polymerase   p563 Yu-Shiun Chen, Chia-Hui Lee, Meng-Yen Hung, Hsu-An Pan, Jin-Chern Chiou and G. Steven Huang doi:10.1038/nnano.2015.64 Addendum Top Addendum: A nanophotonic solar thermophotovoltaic device   p563 Andrej Lenert, David M. Bierman, Youngsuk Nam, Walker R. Chan, Ivan Celanovic, Marin Soljacic and Evelyn N. Wang doi:10.1038/nnano.2015.117 In The Classroom Top Inspired by competition   p564 Eric Plum and Walter Stein doi:10.1038/nnano.2015.93 Science competitions in secondary school can inspire students and teachers alike, as Eric Plum, now a lecturer, and his former teacher Walter Stein explain. Top Advertisement Nature Outlook Biomaterials The Nature Outlook: Biomaterials examines the many ways in which solutions created by the natural world — by spiders, mussels, geckos, lotus leaves and more — are inspiring technological imitations that surpass some of the best existing human-engineered substances.  Access the Outlook free online for six months. Produced with support from:  KISCO Ltd. in association with Spiber Inc.   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. 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