Encryption at the flick of a light switch: Nanoscale article in Chemistry World

Scientists have designed a grid of light responsive colloidal particles to function as pixels that could be used to create barcodes for cryptographic data storage.

Photochromic dyes are used in films to respond to light, for example in self-dimming sunglasses. These dyes have two isomers, one forms in visible light and is transparent, the other forms in UV light and absorbs light, darkening the sunglasses. If a photochromic dye is placed in a film with a fluorescent dye, and the wavelength of the fluorescence is matched to that absorbed by the photochromic dye, the photochromic dye can be used to switch the fluorescence off and on when exposed to UV or visible light.

Clemens Weiß and his colleagues at the Max-Planck Institute for Polymer Research in Germany, have devised a way to use this kind of light triggered dye switch to store data. Encapsulating the photochromic/fluorescent dye pair inside polymer colloids traps the molecules together prolonging the lifetime of the ‘on’ or ‘off’ state for several days. Assembling these functional colloids within a monolayer of larger colloids creates a grid of fluorescent ‘colloidal pixels’. Shining UV light on chosen areas of the grid turns the pixels’ fluorescence off creating dark areas on the grid whilst leaving others fluorescent.

Interested to know more? Read the full news article by Emily Skinner in Chemistry World here…

Read the article by K. Bley, N. Sinatra, N. Vogel, K. Landfester and C. K. Weiss in Nanoscale:

Switching light with light – advanced functional colloidal monolayers
K. Bley, N. Sinatra, N. Vogel, K. Landfester and C. K. Weiss
DOI: 10.1039/C3NR04897G, Paper

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This week’s HOT articles

Take a look at this week’s selection! These articles are available free for a limited time:
Graphical abstract: Penetration and lateral diffusion characteristics of polycrystalline graphene barriers

Penetration and lateral diffusion characteristics of polycrystalline graphene barriers
Taeshik Yoon, Jeong Hun Mun, Byung Jin Cho and Taek-Soo Kim
DOI: 10.1039/C3NR03849A, Communication

Synthesis and internal electric field dependent photoreactivity of Bi3O4Cl single-crystalline nanosheets with high {001} facet exposure percentages
Jie Li, Lizhi Zhang, Yujie Li and Ying Yu
DOI: 10.1039/C3NR05246J, Communication

Switching light with light – advanced functional colloidal monolayers
K. Bley, N. Sinatra, N. Vogel, K. Landfester and C. K. Weiss
DOI: 10.1039/C3NR04897G, Paper

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Nanoscale Issue 23 of 2013 out now!

Nanoscale Issue 23 Outside front coverNanoscale is delighted to present its current issue which includes an excellent collection of articles on Functional Nanoparticles for Biomedical Applications, Guest Edited by Nguyen TK Thanh. Read her Editorial to find out more.

The outside front cover features an article on Cell-derived vesicles as a bioplatform for the encapsulation of theranostic nanomaterials by Amanda K. Andriola Silva, Riccardo Di Corato, Teresa Pellegrino, Sophie Chat, Giammarino Pugliese, Nathalie Luciani, Florence Gazeau and Claire Wilhelm.

Silver nanoparticles induce developmental stage-specific embryonic phenotypes in zebrafish is the article highlighted on the inside front cover by Maksym Yarema, Riccarda Caputo and Maksym V. Kovalenko.

Issue 23 contains the following Review and Feature articles:

Functional nanoparticles for biomedical applications
Nguyen Thi Kim Thanh

Upconverting and NIR emitting rare earth based nanostructures for NIR-bioimaging
Eva Hemmer, Nallusamy Venkatachalam, Hiroshi Hyodo, Akito Hattori, Yoshie Ebina, Hidehiro Kishimoto and Kohei Soga

Tracking stem cells in tissue-engineered organs using magnetic nanoparticlesNanoscale Issue 23 Inside front cover
Roxanne Hachani, Mark Lowdell, Martin Birchall and Nguyen Thi Kim Thanh

Recent advances in lanthanide-doped upconversion nanomaterials: synthesis, nanostructures and surface modification
Peiyu Qiu, Na Zhou, Hengyu Chen, Chunlei Zhang, Guo Gao and Daxiang Cui

Review on measurement techniques of transport properties of nanowires
Miguel Muñoz Rojo, Olga Caballero Calero, A. F. Lopeandia, J. Rodriguez-Viejo and Marisol Martín-Gonzalez

Growing metal nanoparticles in superfluid helium
Shengfu Yang, Andrew M. Ellis, Daniel Spence, Cheng Feng, Adrian Boatwright, Elspeth Latimer and Chris Binns

Fancy submitting an article to Nanoscale? Then why not submit to us today!

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Patterning graphene onto complex surfaces: Nanoscale article in Chemistry World

Graphene could find use in next-generation flexible electronic devices thanks to scientists in Taiwan and the US who have developed a low cost and scalable method to pattern graphene onto 3D surfaces.
Graphical abstract: Scalable, flexible and high resolution patterning of CVD graphene

Flexible electronics are destined to transform the way we manufacture and interact with electronic devices. Graphene’s high electrical conductivity and mechanical stability could prove beneficial in flexible electronic circuits. However, despite its potential, graphene is typically only produced and patterned in research environments with economic barriers hampering its use in commercial applications.

Now, a group led by Mario Hofmann at National Cheng Kung University have demonstrated an easy and scalable approach to depositing high resolution graphene patterns onto surfaces.

Interested to know more? Read the full news article by Michael Parkin in Chemistry World here…

Read the article by Mario Hofmann, Ya-Ping Hsieh, Allen L. Hsu and Jing Kong in Nanoscale:

Scalable, flexible and high resolution patterning of CVD graphene
Mario Hofmann, Ya-Ping Hsieh, Allen L. Hsu and Jing Kong
DOI: 10.1039/C3NR04968J

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This week’s HOT articles

Take a look at this week’s selection! These articles are available free for a limited time:
Graphical abstract: Scalable, flexible and high resolution patterning of CVD graphene

Thermal stability of Mn2+ ion luminescence in Mn-doped core–shell quantum dots
Xi Yuan, Jinju Zheng, Ruosheng Zeng, Pengtao Jing, Wenyu Ji, Jialong Zhao, Weiyou Yang and Haibo Li
DOI: 10.1039/C3NR04319C, Paper

Scalable, flexible and high resolution patterning of CVD graphene
Mario Hofmann, Ya-Ping Hsieh, Allen L. Hsu and Jing Kong
DOI: 10.1039/C3NR04968J, Paper

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Nanoscale themed collection: Hybrid Materials – deadline now approaching

Nanoscale themed collection: Hybrid Materials
Dedicated to Professor Avnir on his 65th Birthday
Guest Editors: Mario Pagliaro and Jean-Marie Nedelec

The deadline for submissions to this themed collection is now approaching: 29th November 2013.

This high-profile collection of review articles on hybrid materials will be published in 2014. The themed collection will be guest edited byMario Pagliaro (CNR, Italy) and Jean-Marie Nedelec, (Institute de Chemie de Clermont Ferrand, France), two leading researchers in the the topic of the themed issue.

The articles will be dedicated to Professor David Avnir on his 65th Birthday. Professor Avnir is well known for his research in the areas of organically doped metals and sol-gel organic hybrid materials and biomaterials, and the collection will include exciting articles in these areas.

Please email the editorial office if you are interested in submitting an article for this themed collection at nanoscale-rsc@rsc.org.

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Magnetic nanoparticles as contrast agents for MRI-based stem cell tracking and labeling.

Lee Barrett is a guest web-writer for Nanoscale. He is currently a post-doctoral researcher at the University of Strathclyde, UK

Tracking the distribution of stem cells (SCs) in tissue engineered organ scaffolds is of great importance in order to understand the role, movement and distribution of SCs after they have been implanted.   A recent minireview, by Hachani et al. at University College London, highlights the recent application of nanotechnology in SC labeling and magnetic resonance imaging (MRI).

The authors provide an overview of magnetic nanoparticles (MNPs), such as iron oxide and gadolinium nanoparticles, for use as contrast agents in MRI-based cell tracking and labeling.  The minireview introduces SC research and how conventional MRI is used as a tool for tracking and labeling.  However, the review’s main focus is discussing the recent developments in magnetic nanoparticle research, particularly detailing the efforts made by researchers in controlling the physical properties of the MNPs, such as size, shape, surface chemistry, etc, in order to produce more biocompatible and stable MNP contrast agents.

For researchers wishing to gain an insight into the application of nanotechnology in MRI and stem cell research, this review provides a valuable starting point for becoming familiar with recent developments in this area.

By Lee Barrett

You can read this Minireview in Nanoscale by clicking the link below:

Tracking stem cells in tissue-engineered organs using magnetic nanoparticles
Roxanne Hachani, Mark Lowdell, Martin Birchall and Nguyễn Thi Kim Thanh
DOI: 10.1039/C3NR03861K, Minireview

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This week’s HOT articles

Take a look at this week’s selection! These articles are available free for a limited time:

Quintuple-modality (SERS-MRI-CT-TPL-PTT) plasmonic nanoprobe for theranostics
Yang Liu, Zheng Chang, Hsiangkuo Yuan, Andrew M. Fales and Tuan Vo-DinhBipolar switching polarity reversal by electrolyte layer sequence in electrochemical metallization cells with dual-layer solid electrolytes
DOI: 10.1039/C3NR03762B, Communication

Bipolar switching polarity reversal by electrolyte layer sequence in electrochemical metallization cells with dual-layer solid electrolytes
Rohit Soni, Paul Meuffels, Adrian Petraru, Mirko Hansen, Martin Ziegler, Ondrej Vavra, Hermann Kohlstedt and Doo Seok Jeong
DOI: 10.1039/C3NR03993E, Paper

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Nanoscale Issue 22 of 2013 out now!

Nanoscale Issue 22 Outside Front CoverNanoscale is delighted to present its current issue.

Electron beam induced local crystallization of HfO 2 nanopores for biosensing applications is the article highlighted on the outside front cover by Jiwook Shim, Jose A. Rivera and Rashid Bashir.

The inside front cover features an article on Single Particle Orientation and Rotational Tracking (SPORT) in biophysical studies by Yan Gu, Ji Won Ha, Ashley E. Augspurger, Kuangcai Chen, Shaobin Zhu and Ning Fang.

Issue 21 contains the following Review, Feature, and Opinion articles:

Nanostructure-based optoelectronic sensing of vapor phase explosives – a promising but challenging method
Baiyi Zu, Yanan Guo and Xincun Dou, Nanoscale

Current and emerging challenges of field effect transistor based bio-sensing Nanoscale Issue 22 Inside Front Cover
Akira Matsumoto and Yuji Miyahara, Nanoscale

Intravenous hemostats: challenges in translation to patients
Margaret Lashof-Sullivan, Andrew Shoffstall and Erin Lavik, Nanoscale

Recent advances in surface chemistry strategies for the fabrication of functional iron oxide based magnetic nanoparticles
Kostiantyn Turcheniuk, Arkadii V. Tarasevych, Valeriy P. Kukhar, Rabah Boukherroub and Sabine Szunerits, Nanoscale

Synthesis of graphene-supported noble metal hybrid nanostructures and their applications as advanced electrocatalysts for fuel cells
Chengzhou Zhu and Shaojun Dong, Nanoscale

Single cycle and transient force measurements in dynamic atomic force microscopy
Karim Gadelrab, Sergio Santos, Josep Font and Matteo Chiesa, Nanoscale

Hot spots in different metal nanostructures for plasmon-enhanced Raman spectroscopy
Hong Wei and Hongxing Xu, Nanoscale

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High impact research on biotechnology

We would like to share with you a selection of recent articles published in the Royal Society of Chemistry journals Energy & Environmental Science (EES), Nanoscale and Physical Chemistry Chemical Physics (PCCP) in the area of biotechnology.

You can read these articles for free for a limited period by clicking on the links below.

EES, Nanoscale and PCCP are high-impact journals published on a not-for-profit ethos for the benefit of the wider scientific community.

Sign up to receive the latest news from your favourite journals.


Nanoscale publishes community-spanning research across the fields of nanoscience and nanotechnology. Its Impact Factor is currently 6.23.

FREE: The interplay between carbon nanomaterials and amyloid fibrils in bio-nanotechnology
Chaoxu Li and Raffaele Mezzenga
DOI: 10.1039/C3NR01644G, Review Article

FREE: Lanthanide-doped luminescent nano-bioprobes: from fundamentals to biodetection
Yongsheng Liu, Datao Tu, Haomiao Zhu, En Ma and Xueyuan Chen
DOI: 10.1039/C2NR33239F, Feature Article

FREE: Cholesterol – a biological compound as a building block in bionanotechnology
Leticia Hosta-Rigau, Yan Zhang, Boon M. Teo, Almar Postma and Brigitte Städler
DOI: 10.1039/C2NR32923A, Feature Article

FREE: Plant mediated green synthesis: modified approaches
Ratul Kumar Das and Satinder Kaur Brar
DOI: 10.1039/C3NR02548A, Minireview

FREE: Graphene: a versatile nanoplatform for biomedical applications
Yin Zhang, Tapas R. Nayak, Hao Hong and Weibo Cai
DOI: 10.1039/C2NR31040F, Review Article

FREE: Nanocellulose electroconductive composites
Zhijun Shi, Glyn O. Phillips and Guang Yang
DOI: 10.1039/C3NR00408B, Minireview

FREE: Recombinant antibody mediated delivery of organelle-specific DNA pH sensors along endocytic pathways.
Yamuna Krishnan, Souvik Modi, Saheli Halder and Clément Nizak
DOI: 10.1039/C3NR03769J, Paper

FREE: Multi-enzyme Co-Embedded Organic-Inorganic Hybrid Nanoflowers: Synthesis and Application in Colorimetric Sensor
Jiayu Sun, Jiechao Ge, Weimin Liu, Minhuan Lan, Hongyan Zhang, Pengfei Wang, Yanming Wang and Zhongwei Niu
DOI: 10.1039/C3NR04425D, Paper

FREE: An unusual pathway for the membrane wrapping of rodlike nanoparticles and the orientation- and membrane wrapping-dependent nanoparticle interaction
Tongtao Yue, Xiaojuan Wang, Fang Huang and Xianren Zhang
DOI: 10.1039/C3NR02683C, Paper

FREE: Flash photo stimulation of human neural stem cells on graphene/TiO2 heterojunction for differentiation into neurons
Omid Akhavan and Elham Ghaderi
DOI: 10.1039/C3NR02161K, Paper

FREE: Bio-nanohybrids of quantum dots and photoproteins facilitating strong nonradiative energy transfer
Urartu Ozgur Safak Seker, Evren Mutlugun, Pedro Ludwig Hernandez-Martinez, Vijay K. Sharma, Vladimir Lesnyak, Nikolai Gaponik, Alexander Eychmüller and Hilmi Volkan Demir
DOI: 10.1039/C3NR01417G, Paper

FREE: A methodology for preparing nanostructured biomolecular interfaces with high enzymatic activity
Lu Shin Wong, Chinnan V. Karthikeyan, Daniel J. Eichelsdoerfer, Jason Micklefield and Chad A. Mirkin
DOI: 10.1039/C1NR11443C, Paper


With an Impact Factor of 11.65, which is rising fast, EES is the ideal place to publish your research.

FREE: The role of biofuels in the future energy supply
Luis Caspeta, Nicolaas A. A. Buijs and Jens Nielsen
DOI: 10.1039/C3EE24403B, Opinion

FREE: Implanted biofuel cells operating in vivo – methods, applications and perspectives – feature article
Evgeny Katz and Kevin MacVittie
DOI: 10.1039/C3EE42126K, Opinion

FREE: Enzymes and bio-inspired electrocatalysts in solar fuel devices
Thomas W. Woolerton, Sally Sheard, Yatendra S. Chaudhary and Fraser A. Armstrong
DOI: 10.1039/C2EE21471G, Perspective

FREE: From biodiesel and bioethanol to liquid hydrocarbon fuels: new hydrotreating and advanced microbial technologies
Juan Carlos Serrano-Ruiz, Enrique V. Ramos-Fernández and Antonio Sepúlveda-Escribano
DOI: 10.1039/C1EE02418C, Perspective

FREE: Immobilization technology: a sustainable solution for biofuel cell design
Xiao-Yu Yang, Ge Tian, Nan Jiang and Bao-Lian Su
DOI: 10.1039/C1EE02391H, Review Article

FREE: Oxygen-tolerant coenzyme A-acylating aldehyde dehydrogenase facilitates efficient photosynthetic n-butanol biosynthesis in cyanobacteria
Ethan I. Lan, Soo Y. Ro and James C. Liao
DOI: 10.1039/C3EE41405A, Paper

FREE: Engineered yeast for enhanced CO2 mineralization
Roberto Barbero, Lino Carnelli, Anna Simon, Albert Kao, Alessandra d’Arminio Monforte, Moreno Riccò, Daniele Bianchi and Angela Belcher
DOI: 10.1039/C2EE24060B, Paper

FREE: Layered corrugated electrode macrostructures boost microbial bioelectrocatalysis
Shuiliang Chen, Guanghua He, Qin Liu, Falk Harnisch, Yan Zhou, Yu Chen, Muddasir Hanif, Suqin Wang, Xinwen Peng, Haoqing Hou and Uwe Schröder
DOI: 10.1039/C2EE23344D, Communication

FREE: An extremely radioresistant green eukaryote for radionuclide bio-decontamination in the nuclear industry
Corinne Rivasseau, Emmanuel Farhi, Ariane Atteia, Alain Couté, Marina Gromova, Diane de Gouvion Saint Cyr, Anne-Marie Boisson, Anne-Sophie Féret, Estelle Compagnon and Richard Bligny
DOI: 10.1039/C2EE23129H, Paper

FREE: Living battery – biofuel cells operating in vivo in clams
Alon Szczupak, Jan Halámek, Lenka Halámková, Vera Bocharova, Lital Alfonta and Evgeny Katz
DOI: 10.1039/C2EE21626D, Communication


PCCP is committed to publishing the best research across physical chemistry, chemical physics and biophysical chemistry.

FREE: Miniaturized biological and electrochemical fuel cells: challenges and applications
Jie Yang, Sasan Ghobadian, Payton J. Goodrich, Reza Montazami and Nastaran Hashemi
DOI: 10.1039/C3CP50804H, Perspective

FREE: Plasmonic fluorescence enhancement by metal nanostructures: shaping the future of bionanotechnology
Daniel Darvill, Anthony Centeno and Fang Xie
DOI: 10.1039/C3CP50415H, Perspective

FREE: Construction of biomimetic smart nanochannels with polymer membranes and application in energy conversion systems
Liping Wen, Ye Tian, Jie Ma, Jin Zhai and Lei Jiang
DOI: 10.1039/C2CP23911F, Perspective

FREE: Encapsulation of actives for sustained release
Markus Andersson Trojer, Lars Nordstierna, Matias Nordin, Magnus Nydén and Krister Holmberg
DOI: 10.1039/C3CP52686K, Perspective

FREE: Mussel inspired surface functionalization of electrospun nanofibers for bio-applications
Søren Roesgaard Nielsen, Flemming Besenbacher and Menglin Chen
DOI: 10.1039/C3CP52651H, Perspective

FREE: Physics and engineering of peptide supramolecular nanostructures
Amir Handelman, Peter Beker, Nadav Amdursky and Gil Rosenman
DOI: 10.1039/C2CP40157F, Perspective

FREE: A pacemaker powered by an implantable biofuel cell operating under conditions mimicking the human blood circulatory system – battery not included
Mark Southcott, Kevin MacVittie, Jan Halámek, Lenka Halámková, William D. Jemison, Robert Lobel and Evgeny Katz
DOI: 10.1039/C3CP50929J, Paper

FREE: A novel three-dimensional macrocellular carbonaceous biofuel cell
Victoria Flexer, Nicolas Brun, Mathieu Destribats, Rénal Backov and Nicolas Mano
DOI: 10.1039/C3CP50807B, Pape

FREE: In situ fluorescence and electrochemical monitoring of a photosynthetic microbial fuel cell
Alister E. Inglesby, Kamran Yunus and Adrian C. Fisher
DOI: 10.1039/C3CP51076J, Paper

FREE: Surface morphology and surface energy of anode materials influence power outputs in a multi-channel mediatorless bio-photovoltaic (BPV) system
Paolo Bombelli, Marie Zarrouati, Rebecca J. Thorne, Kenneth Schneider, Stephen J. L. Rowden, Akin Ali, Kamran Yunus, Petra J. Cameron, Adrian C. Fisher, D. Ian Wilson, Christopher J. Howe and Alistair J. McCormick
DOI: 10.1039/C2CP42526B, Paper

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