Volume 2 Issue 3, March 2019

Volume 2 Issue 3

Spins go the distance in organic semiconductors

Long spin diffusion lengths of more than 1 μm have been measured in doped conjugated organic polymers, suggesting the materials could be of use in spintronic applications. The blueprint-themed schematic illustration on the cover highlights the lateral architecture of the spin transport device used in the experiments, which is based on spin pumping injection and inverse spin Hall detection.

See Wang et al. and News & Views by Richter et al.

Image: Deepak Venkateshvaran, University of Cambridge and Nanda Venugopal, Multidisciplinary Artist. Cover Design: Allen Beattie.

Editorial

  • Editorial |

    Electronic waste is a global problem that requires global action.

Comment & Opinion

  • Comment |

    Electronic waste is the fastest growing category of hazardous solid waste in the world. Addressing the problem will require international collaboration, economic incentives that protect labour, and management approaches that minimize adverse impacts on the environment and human health.

    • Abhishek Kumar Awasthi
    • , Jinhui Li
    • , Lenny Koh
    •  & Oladele A. Ogunseitan

Books & Arts

Research Highlights

News & Views

  • News & Views |

    A hybrid analogue–digital computing system based on memristive devices is capable of solving classic control problems with potentially a lower energy consumption and higher speed than fully digital systems.

    • Sam Green
    •  & James B. Aimone

Research

  • Article |

    Measurements with a lateral spin pumping device architecture suggest that long spin diffusion lengths of more than 1 μm are possible in conjugated polymer systems that have a sufficiently high spin density.

    • Shu-Jen Wang
    • , Deepak Venkateshvaran
    • , M. R. Mahani
    • , Uday Chopra
    • , Erik R. McNellis
    • , Riccardo Di Pietro
    • , Sam Schott
    • , Angela Wittmann
    • , Guillaume Schweicher
    • , Murat Cubukcu
    • , Keehoon Kang
    • , Remington Carey
    • , Thomas J. Wagner
    • , Janis N. M. Siebrecht
    • , Daniel P. G. H. Wong
    • , Ian E. Jacobs
    • , Razan O. Aboljadayel
    • , Adrian Ionescu
    • , Sergei A. Egorov
    • , Sebastian Mueller
    • , Olga Zadvorna
    • , Piotr Skalski
    • , Cameron Jellett
    • , Mark Little
    • , Adam Marks
    • , Iain McCulloch
    • , Joerg Wunderlich
    • , Jairo Sinova
    •  & Henning Sirringhaus
  • Article |

    By integrating two-dimensional MoS2 transistors with metal-oxide resistive random-access memories, two-transistor–two-resistor ternary content-addressable memory cells can be created, which could be used to search large amounts of data in parallel.

    • Rui Yang
    • , Haitong Li
    • , Kirby K. H. Smithe
    • , Taeho R. Kim
    • , Kye Okabe
    • , Eric Pop
    • , Jonathan A. Fan
    •  & H.-S. Philip Wong
  • Article |

    A reinforcement learning algorithm can be implemented on a hybrid analogue–digital platform based on memristive arrays for parallel and energy-efficient in situ training.

    • Zhongrui Wang
    • , Can Li
    • , Wenhao Song
    • , Mingyi Rao
    • , Daniel Belkin
    • , Yunning Li
    • , Peng Yan
    • , Hao Jiang
    • , Peng Lin
    • , Miao Hu
    • , John Paul Strachan
    • , Ning Ge
    • , Mark Barnell
    • , Qing Wu
    • , Andrew G. Barto
    • , Qinru Qiu
    • , R. Stanley Williams
    • , Qiangfei Xia
    •  & J. Joshua Yang

Reverse Engineering

  • Reverse Engineering |

    Computer-supported cooperative work (CSCW) seeks to understand and refine the impact of technology on how groups work together. Irene Greif recounts how the field began in 1984 at a meeting stimulated by trends in distributed systems, networks and office automation.

    • Irene Greif