Volume 11 Issue 12, December 2016

Volume 11 Issue 12

DNA is packed in a condensed state in nature to serve numerous functions. The condensation of DNA on a surface typically gives polydisperse structures with no spatial organization. Simmel, Bar-Ziv and colleagues have now shown that by patterning a photo-modifiable biochip with an electron beam, DNA dendrites collapse into one-dimensional fibres 20 nm wide stretching over 70 μm in length. As well as allowing micron-scale DNA patterning, the system is suited to probabilistic problems such as solving a maze and could be integrated with biological circuits to regulate downstream processed linked to DNA condensation. The cover image is a scanning electron microscopy image of DNA condensation propagating through a maze to find the shortest path to the exit.

Letter p1076

IMAGE: GüNTHER PARDATSCHER, TECHNICAL UNIVERSITY OF MUNICH AND DAN BRACHA, WEIZMANN INSTITUTE OF SCIENCE, ISRAEL

COVER DESIGN: BETHANY VUKOMANOVIC

Editorial

  • Editorial |

    We reflect on some aspects of the newly updated plan of the US National Nanotechnology Initiative.

  • Editorial |

    With the publication of the first Nature Nanotechnology Insight, we also introduce the concept of Analysis as an article type to our journal.

Thesis

  • Thesis |

    In 2006, a group of scientists proposed five grand challenges to support the safe handling of nanotechnology. Ten years on, Andrew Maynard and Robert Aitken — two of the original authors — look at where we have come, and where we still need to go.

    • Andrew D. Maynard
    •  & Robert J. Aitken

Research Highlights

News & Views

  • News & Views |

    A general method for particle assembly allows access to a diverse range of modular microscale supraparticles from nanoparticles, nanowires and even cells.

    • Nicholas A. Kotov
  • News & Views |

    Nanostructured photocatalytic microrods can swim either towards or away from a light source depending on their surface functionalization.

    • Ayusman Sen

Editorial

Feature

  • Feature |

    Formula E — an all-electric car race series — provides a platform for displaying new technologies, and potentially accelerating their development.

    • Andreas Trabesinger

Perspective

Review Article

Analysis

In the Classroom

Letter

  • Letter |

    Topologically protected metallic channels formed at the edges of graphene bilayers can be observed through a split-gate structure.

    • Jing Li
    • , Ke Wang
    • , Kenton J. McFaul
    • , Zachary Zern
    • , Yafei Ren
    • , Kenji Watanabe
    • , Takashi Taniguchi
    • , Zhenhua Qiao
    •  & Jun Zhu
  • Letter |

    Individual ion qubits held in a planar ion trap are optically addressed with scalable nanophotonic waveguides and focusing grating couplers integrated with the trap chip.

    • Karan K. Mehta
    • , Colin D. Bruzewicz
    • , Robert McConnell
    • , Rajeev J. Ram
    • , Jeremy M. Sage
    •  & John Chiaverini
  • Letter |

    Spatially resolved measurements of the absorption, internal quantum efficiency and photoluminescence quantum yield of InP single nanowire solar cells allow the determination of intrinsic losses and thermodynamic limits of these nanophotonic devices.

    • Sander A. Mann
    • , Sebastian Z. Oener
    • , Alessandro Cavalli
    • , Jos E. M. Haverkort
    • , Erik P. A. M. Bakkers
    •  & Erik C. Garnett
  • Letter |

    DNA polymers patterned on a biochip can be condensed into designed one-dimensional bundles spanning around 100 μm in length.

    • Günther Pardatscher
    • , Dan Bracha
    • , Shirley S. Daube
    • , Ohad Vonshak
    • , Friedrich C. Simmel
    •  & Roy H. Bar-Ziv

Article

  • Article |

    The phenomenon of circumferential faceting in multiwalled nanotubes of general chirality and identity is rationalized in terms of interwall registry patterns between adjacent layers of curved hexagonal lattices.

    • Itai Leven
    • , Roberto Guerra
    • , Andrea Vanossi
    • , Erio Tosatti
    •  & Oded Hod
  • Article |

    A Janus photocatalytic structure can orient and move either towards or away from an external light source, mimicking the behaviour of phototactic microorganisms.

    • Baohu Dai
    • , Jizhuang Wang
    • , Ze Xiong
    • , Xiaojun Zhan
    • , Wei Dai
    • , Chien-Cheng Li
    • , Shien-Ping Feng
    •  & Jinyao Tang
  • Article |

    Solid-state nanopores can be used to directly observe individual knots in linear and circular DNA molecules of arbitrary length, and to determine the knot's size, position, and probability of occurrence as a function of DNA length.

    • Calin Plesa
    • , Daniel Verschueren
    • , Sergii Pud
    • , Jaco van der Torre
    • , Justus W. Ruitenberg
    • , Menno J. Witteveen
    • , Magnus P. Jonsson
    • , Alexander Y. Grosberg
    • , Yitzhak Rabin
    •  & Cees Dekker
  • Article |

    Few-layered, vertically aligned MoS2 films can efficiently harvest visible light for photocatalytic water disinfection, allowing >99.999% bacteria to be rapidly inactivated.

    • Chong Liu
    • , Desheng Kong
    • , Po-Chun Hsu
    • , Hongtao Yuan
    • , Hyun-Wook Lee
    • , Yayuan Liu
    • , Haotian Wang
    • , Shuang Wang
    • , Kai Yan
    • , Dingchang Lin
    • , Peter A. Maraccini
    • , Kimberly M. Parker
    • , Alexandria B. Boehm
    •  & Yi Cui
  • Article |

    A general strategy that allows a range of nanocrystals, microparticles and cells to be assembled into superstructures is reported.

    • Junling Guo
    • , Blaise L. Tardy
    • , Andrew J. Christofferson
    • , Yunlu Dai
    • , Joseph J. Richardson
    • , Wei Zhu
    • , Ming Hu
    • , Yi Ju
    • , Jiwei Cui
    • , Raymond R. Dagastine
    • , Irene Yarovsky
    •  & Frank Caruso
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