Nature Nanotechnology Contents July 2012 Volume 7 Number 7 pp409-479

TABLE OF CONTENTS July 2012 Volume 7, Issue 7 Commentary Thesis Research Highlights News and Views Letters Articles Addendum Subscribe   Facebook   RSS   Recommend to library   Twitter   Advertisement Online-only personal subscriptions now available to Nature Nanotechnology For only 49 USD/29 GBP/29 EUR Subscribe now!   Commentary Top When enough is enough   pp409 - 411 Steffen Foss Hansen and Anders Baun doi:10.1038/nnano.2012.115 The European Commission should be regulating nanosilver, not asking for yet another report on its impact on health and the environment. Thesis Top Does nanotech have a gender?   p412 Chris Toumey doi:10.1038/nnano.2012.114 Gender is less of an issue in nanotechnology than in other areas of science and technology but, as Chris Toumey explains, public attitudes to nanotech do depend on gender. Research Highlights Top Our choice from the recent literature   p413 doi:10.1038/nnano.2012.120 News and Views Top Hybrid nanomaterials: Not just a pretty flower   pp415 - 416 Jie Zeng and Younan Xia doi:10.1038/nnano.2012.105 Combining copper(II) phosphate and proteins leads to the formation of hybrid nanostructures that are shaped like flowers and have enhanced catalytic activity and stability. See also: Letter by Ge et al. Nanotoxicology: No signs of illness   pp416 - 417 Leo Y. T. Chou and Warren C. W. Chan doi:10.1038/nnano.2012.110 Quantum dots that contain cadmium, selenium and zinc are not toxic to monkeys for periods of up to 90 days, but longer-term studies are needed to determine the ultimate fate of the heavy metals that accumulate in the organs. See also: Letter by Ye et al. Composite materials: Taking a leaf from nature's book   pp417 - 419 Max I. Solar and Markus J. Buehler doi:10.1038/nnano.2012.86 Amyloid protein fibrils and graphene sheets can be combined to make a material that is biodegradable and has useful shape-memory and enzyme-sensing properties. See also: Letter by Li et al. Self-assembly: Judging a nanocube by its cover   pp419 - 420 Oded Rabin doi:10.1038/nnano.2012.113 One-dimensional strings of metal nanocubes can be precisely self-assembled with the help of polymer chemistry. See also: Letter by Gao et al. Nanotechnology JOBS of the week doctor-assistant Bioelectronics and Nanotechnology Hasselt University PhD Scholarship in Nanotechnology McGill University Combined Laser Nanotechnology - post doc IMIP UOS POTENZA - CNR Combined Laser Nanotechnology - post graduate IMIP UOS POTENZA - CNR Development Chemist -Nanotechnology Hudson Shribman Scientific More Science jobs from Nanotechnology EVENT Colloids and Nanomedicine 2012 15.-17.07.12 Amsterdam, Netherlands More science events from Letters Top Biodegradable nanocomposites of amyloid fibrils and graphene with shape-memory and enzyme-sensing properties   pp421 - 427 Chaoxu Li, Jozef Adamcik and Raffaele Mezzenga doi:10.1038/nnano.2012.62 Amyloid fibrils and graphene can be combined to make a material that is well suited to various biosensing applications. See also: News and Views by Solar & Buehler Protein–inorganic hybrid nanoflowers   pp428 - 432 Jun Ge, Jiandu Lei and Richard N. Zare doi:10.1038/nnano.2012.80 Mixing copper sulphate with phosphate-buffered saline that contains enzymes results in hybrid nanoflowers that display increased enzymatic activity compared with free enzymes. See also: News and Views by Zeng & Xia Self-orienting nanocubes for the assembly of plasmonic nanojunctions   pp433 - 437 Bo Gao, Gaurav Arya and Andrea R. Tao doi:10.1038/nnano.2012.83 Metal nanocubes grafted with polymers can self-assemble into arrays of one-dimensional strings that have well-defined interparticle orientations and tunable electromagnetic properties. See also: News and Views by Rabin Flexible molecular-scale electronic devices   pp438 - 442 Sungjun Park, Gunuk Wang, Byungjin Cho, Yonghun Kim, Sunghoon Song, Yongsung Ji, Myung-Han Yoon and Takhee Lee doi:10.1038/nnano.2012.81 The charge-transport properties of a molecular monolayer sandwiched between two flexible electrodes remain stable when the device is bent or twisted. Anderson–Mott transition in arrays of a few dopant atoms in a silicon transistor   pp443 - 447 Enrico Prati, Masahiro Hori, Filippo Guagliardo, Giorgio Ferrari and Takahiro Shinada doi:10.1038/nnano.2012.94 Small numbers of arsenic atoms are implanted into a silicon transistor, and the Anderson–Mott transition is observed by controlling the spacing between these dopants. Measuring the size and charge of single nanoscale objects in solution using an electrostatic fluidic trap   pp448 - 452 Nassiredin Mojarad and Madhavi Krishnan doi:10.1038/nnano.2012.99 Using an approach that is analogous to Millikan's oil drop experiment, the size and charge of single nanoscale objects in solution can be directly measured by analysing their thermal motion in an array of electrostatic fluidic traps on a chip. A pilot study in non-human primates shows no adverse response to intravenous injection of quantum dots   pp453 - 458 Ling Ye, Ken-Tye Yong, Liwei Liu, Indrajit Roy, Rui Hu, Jing Zhu, Hongxing Cai, Wing-Cheung Law, Jianwei Liu, Kai Wang, Jing Liu, Yaqian Liu, Yazhuo Hu, Xihe Zhang, Mark T. Swihart and Paras N. Prasad doi:10.1038/nnano.2012.74 Six rhesus macaques injected with a cadmium-based quantum-dot formulation survived without any evidence of toxicity, but cadmium remained in certain organs after 90 days. See also: News and Views by Chou & Chan Magnetoferritin nanoparticles for targeting and visualizing tumour tissues   pp459 - 464 Kelong Fan, Changqian Cao, Yongxin Pan, Di Lu, Dongling Yang, Jing Feng, Lina Song, Minmin Liang and Xiyun Yan doi:10.1038/nnano.2012.90 Iron oxide nanoparticles encapsulated inside a ferritin protein shell can be used to target and visualize tumours without the use of any targeting ligands or contrast agents. Articles Top Emissive ZnO–graphene quantum dots for white-light-emitting diodes   pp465 - 471 Dong Ick Son, Byoung Wook Kwon, Dong Hee Park, Won-Seon Seo, Yeonjin Yi, Basavaraj Angadi, Chang-Lyoul Lee and Won Kook Choi doi:10.1038/nnano.2012.71 Quantum dots with a zinc oxide core and a strained graphene shell are used as an emissive layer in a white-light-emitting diode. Dual-gated bilayer graphene hot-electron bolometer   pp472 - 478 Jun Yan, M-H. Kim, J. A. Elle, A. B. Sushkov, G. S. Jenkins, H. M. Milchberg, M. S. Fuhrer and H. D. Drew doi:10.1038/nnano.2012.88 An infrared bolometer made using bilayer graphene compares favourably to existing devices in terms of sensitivity, noise equivalent power and speed. Addendum Top Self-assembly of self-limiting monodisperse supraparticles from polydisperse nanoparticles   p479 Yunsheng Xia, Trung Dac Nguyen, Ming Yang, Byeongdu Lee, Aaron Santos, Paul Podsiadlo, Zhiyong Tang, Sharon C. Glotzer and Nicholas A. Kotov doi:10.1038/nnano.2012.106 Top Advertisement Nurture your career with the new-look Naturejobs As the world's largest dedicated jobs boards for the scientific community, Naturejobs is the ideal resource to build your career. Our new and improved functionality enables you to search, save and apply for jobs quickly and easily. Search over 10,000 vacancies to find exactly the right job for you at: http://www.nature.com/naturejobs   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

You have been sent this Table of Contents Alert because you have opted in to receive it. You can change or discontinue your e-mail alerts at any time, by modifying your preferences on your nature.com account at: www.nature.com/myaccount (You will need to log in to be recognised as a nature.com registrant) For further technical assistance, please contact our registration department For print subscription enquiries, please contact our subscription department For other enquiries, please contact our customer feedback department Nature Publishing Group | 75 Varick Street, 9th Floor | New York | NY 10013-1917 | USA Nature Publishing Group's worldwide offices: London - Paris - Munich - New Delhi - Tokyo - Melbourne San Diego - San Francisco - Washington - New York - Boston Macmillan Publishers Limited is a company incorporated in England and Wales under company number 785998 and whose registered office is located at Brunel Road, Houndmills, Basingstoke, Hampshire RG21 6XS. © 2012 Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved.