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Archive for the ‘News’ Category

Nanoscale Issue 18 of 2013 out now!

28 Aug 2013

Nanoscale is delighted to present its current issue which includes an excellent collection of articles celebrating the 10th anniversary of NCNST, Guest Edited by Chen Wang . Read his Editorial to find out more.

The outside front cover features an article on An ingenious replica templated from the light trapping structure in butterfly wing scales by Zhiwu Han, Shichao Niu, Meng Yang, Junqiu Zhang, Wei Yin and Luquan Ren

Precision synthesis of colloidal inorganic nanocrystals using metal and metalloid amides is the article highlighted on the inside front cover by Maksym Yarema, Riccarda Caputo and Maksym V. Kovalenko.

Issue 18 contains the following Review and Feature articles:

Nanostructure-induced DNA condensation
Ting Zhou, Axel Llizo, Chen Wang, Guiying Xu and Yanlian Yang

Innovative pharmaceutical development based on unique properties of nanoscale delivery formulation
Anil Kumar, Fei Chen, Anbu Mozhi, Xu Zhang, Yuanyuan Zhao, Xiangdong Xue, Yanli Hao, Xiaoning Zhang, Paul C. Wang and Xing-Jie Liang

Visible light driven type II heterostructures and their enhanced photocatalysis properties: a review
Yajun Wang, Qisheng Wang, Xueying Zhan, Fengmei Wang, Muhammad Safdar and Jun He

Multiple strategies to activate gold nanoparticles as antibiotics
Yuyun Zhao and Xingyu Jiang

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

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This week’s HOT articles

28 Aug 2013

Take a look at this week’s selection…

Binder-free graphene foams for O2 electrodes of Li–O2 batteries
Wenyu Zhang, Jixin Zhu, Huixiang Ang, Yi Zeng, Ni Xiao, Yiben Gao, Weiling Liu, Huey Hoon Hng and Qingyu Yan
DOI: 10.1039/C3NR03321J, Paper

Flexible electrostatic nanogenerator using graphene oxide film
He Tian, Shuo Ma, Hai-Ming Zhao, Can Wu, Jie Ge, Dan Xie, Yi Yang and Tian-Ling Ren
DOI: 10.1039/C3NR01658G, Communication

A facile route to Si nanowire gate-all-around field effect transistors with a steep subthreshold slope
Jae-Hyun Lee, Byung-Sung Kim, Soon-Hyung Choi, Yamujin Jang, Sung Woo Hwang and Dongmok Whang
DOI: 10.1039/C3NR02552G, Communication

A facile route to Si nanowire gate-all-around field effect transistors with a steep subthreshold slope

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Next-generation vascular stents: Nanoscale article in Chemistry World

27 Aug 2013

Vascular stents can be surgically inserted into blood vessels to treat atherosclerosis © Shutterstock

Scientists in the US and China have developed a biodegradable alloy for use in medical implants. The new alloy, called JDBM, mixes magnesium, neodymium, zinc and zirconium. JDBM degrades uniformly in physiological conditions so further surgery to remove implants made from it would not be necessary.

Atherosclerosis is a precursor to heart disease and occurs when artery walls thicken from cholesterol build-up. Surgical atherosclerosis treatment uses a mesh tube called a stent to restore blood flow in blocked blood vessels. While most currently used stents are non-degradable and require further surgery to remove them, stents made from JDBM by the teams of Rong Fan at Yale University and Guanyin Yuan at Shanghai Jiaotong University will degrade in the body so won’t need to be removed.

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

Read the article by L Mao et al. in Nanoscale:

Nanophasic biodegradation enhances durability and biocompatibility of magnesium alloys for the next-generation vascular stents
Lin Mao, Li Shen, Jialin Liu, Jian Zhang, Wenjiang Ding, Rong Fan and Guangyin Yuan
DOI: 10.1039/C3NR02912C

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Measuring the environmental toxicity of engineered nanomaterials

13 Aug 2013

Advances in nanomaterial production for device implementation, biotechnology and biomedical areas require methods to measure the possible health and safety risks associated with nanomaterials exposed to a particular biological environment. In this manuscript, researchers from the Health Research Institute, Japan, investigate the environmental toxicity of engineered CdSe quantum dots (QDs) and ZnO nanopowder (NP) in human lung cells.

Table of contents image To evaluate the toxicity, the researchers induce the breakdown of the nanomaterials by exposing them to simulated solar UV light. This releases Cd²⁺ and Zn²⁺ ions for the QDs and NPs, respectively, which were then detected by measuring the quenching of the fluorescence signal in the presence of tetrakis (4-carboxyphenyl) porphyrin (TCPP) or by measuring the enhancement of the fluorescence signal in the presence of the commercial Measure iT Pd/Cd sensor.

The researchers conclude that Cd²⁺ and Zn²⁺ ions are not cytotoxic at low concentrations and for short UV exposure times but become toxic at longer exposure times, i.e. 72 hours or longer. In addition, cells exposed in the long term to Cd²⁺ ions result in extensive DNA damage as measured by comet assays and gel electrophoresis. This manuscript details the importance of measuring the health and safety aspects of engineered nanomaterials, in particular the environmental impact of released meal ions, exposed to UV light.

by Dr Lee Barrett

Read the full Nanoscale communication here:

Impairments of cells and genomic DNA by environmentally transformed engineered nanomaterials
Philip Jones, Sakiko Sugino, Shohei Yamamura, Fred Lacyb and Vasudevanpillai Biju*
Nanoscale, 2013, Advance Article
DOI: 10.1039/C3NR03118G

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Nanomagnets clean blood: Nanoscale article in Chemistry World

25 Jul 2013

Nanoparticles that never have to enter the body can capture harmful components in blood, scientists in Switzerland have shown.

Removing unwanted molecules from the blood is the most direct way to cure or prevent many illnesses. An example of this approach is dialysis where small molecules like urea are filtered out to treat patients with renal failure. As this separation method is size-selective, larger noxious molecules or cells cannot be efficiently eliminated from the blood in this way.

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

Read the article by I K Herrmann et al. in Nanoscale:

Nanomagnet-based removal of lead and digoxin from living rats
Nanoscale, 2013, Accepted Manuscript
DOI: 10.1039/c3nr02468g

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Free to access Cancer Nanotechnology collection 2013

16 Jul 2013

We are pleased to present a web collection of articles from publications across the RSC journal portfolio demonstrating the use of (nano)technology in the diagnosis, imaging and treatment of cancer.

This web collection will be free to access from today until the 28^th July, so register for an RSC Publishing personal account and read this cutting edge research for free this week!

Here are just a few of the cancer nanotechnology articles from Nanoscale:

Magnetic particle imaging: advancements and perspectives for real-time in vivo monitoring and image-guided therapy
Michele H. Pablico-Lansigan, Shu F. Situ and Anna Cristina S. Samia
DOI: 10.1039/C3NR00544E

Mesoporous silica nanoparticles as antigen carriers and adjuvants for vaccine delivery
Karishma T. Mody, Amirali Popat, Donna Mahony, Antonino S. Cavallaro, Chengzhong Yu and Neena Mitter
DOI: 10.1039/C3NR00357D

Surface-engineered nanomaterials as X-ray absorbing adjuvant agents for Auger-mediated chemo-radiation
Sang-Min Lee, De-Hao Tsai, Vincent A. Hackley, Martin W. Brechbiel and Robert F. Cook
DOI: 10.1039/C3NR00333G

Quantitative analysis of dendron-conjugated cisplatin-complexed gold nanoparticles using scanning particle mobility mass spectrometry
De-Hao Tsai, Tae Joon Cho, Sherrie R. Elzey, Julien C. Gigault and Vincent A. Hackley
DOI: 10.1039/C3NR00543G

See the full web collection here…

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This week’s HOT articles

08 Jul 2013

Take a look at this week’s exciting selection…

Thermoelectric performance of PbSe quantum dot films
Dajiang Yang, Chenguang Lu, Huiming Yin and Irving P. Herman
DOI: 10.1039/C3NR01875J

Toward tunable doping in graphene FETs by molecular self-assembled monolayers
Bing Li, Alexander V. Klekachev, Mirco Cantoro, Cedric Huyghebaert, André Stesmans, Inge Asselberghs, Stefan De Gendt and Steven De Feyter
DOI: 10.1039/C3NR01255G

Hybrid axial and radial Si–GaAs heterostructures in nanowires
Sonia Conesa-Boj, Sylvain Dunand, Eleonora Russo-Averchi, Martin Heiss, Daniel Ruffer, Nicolas Wyrsch, Christophe Ballif and Anna Fontcuberta i Morral
DOI: 10.1039/C3NR01684F

Direct in situ observation of structural transition driven actuation in VO2 utilizing electron transparent cantilevers
B. Viswanath and Shriram Ramanathan
DOI: 10.1039/C3NR02210B

Quantitative readout of optically encoded gold nanorods using an ordinary dark-field microscope
Raffaella Mercatelli, Fulvio Ratto, Sonia Centi, Silvia Soria, Giovanni Romano, Paolo Matteini, Franco Quercioli, Roberto Pini and Franco Fusi
DOI: 10.1039/C3NR00726J

Selective hydrogenation of nitroaromatics by ceria nanorods
Hai-Zhou Zhu, Yong-Ming Lu, Feng-Jia Fan and Shu-Hong Yu
DOI: 10.1039/C3NR02662K

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Self-powering cloth electronics

02 Jul 2013

Scanning electron micrograph image of the tin dioxide cloth

Chinese scientists have made compact, self-powering, bendable photodetectors from tin dioxide cloth.

Flexible electronics are an exciting area of research with foldable displays and wearable electronics being potential uses. Self-contained power generation complements flexibility by removing the need for bulky external power supplies to make smaller devices more feasible.

Guozhen Shen from the Chinese Academy of Sciences, and co-workers at the Wuhan National Laboratory for Optoelectronics, have made tin dioxide cloth by growing tin dioxide nanoparticles on a carbon cloth template to give hollow microtubes of tin dioxide in a woven pattern. Tin dioxide is a wide band gap semi-conductor that has high quantum efficiency in the UV region, making it a good material for both battery electrodes and light sensing. Shen’s team integrated a tin dioxide cloth-based UV photodetector and a tin dioxide cloth-based lithium-ion battery into one device to form a flexible, self-powering photodetector that can be trimmed to match any shape. The detector’s performance is comparable to conventional devices and, importantly, no change in performance occurs when the cloth is folded.

Read more in the Chemistry World article by Emily Skinner.

And check out the original research in Nanoscale:

SnO₂-microtubes-assembled cloth for fully-flexible self-powered photodetector nanosystems
Xiaojuan Hou, Bin Liu, Xianfu Wang, Zhuoran Wang, Qiufan Wang, Di Chen and Guozhen Shen
DOI: 10.1039/C3NR02300A

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New Nanoscale Associate Editor: Dr Yamuna Krishnan

02 Jul 2013

We are delighted to welcome Dr Yamuna Krishnan as a new Associate Editor for Nanoscale.

Yamuna Krishnan: New Nanoscale Associate Editor

Dr Krishnan is a Reader at the National Center for Biological Sciences (NCBS), Bangalore, India. Her research involves understanding the structure and dynamics of unusual forms of DNA and translating this knowledge to create DNA-based nanodevices for applications in bionanotechnology.

Dr Krishnan obtained her BSc in chemistry from the University of Madras, and graduated with a PhD in organic chemistry from the Indian Institute of Science, Bangalore. Between 2001 and 2004 she was a research fellow at the University of Cambridge, UK, before taking up a position as a Fellow (Assistant Professor equivalent) at NCBS. In 2002 she was awarded the prestigious 1851 Research Fellowship award.

Dr Krishnan will be handling papers soon and so we encourage you to submit to her editorial office.

We have collected together some recent articles in Dr Krishnan’s exciting research fields, with a selection available to read for free for a limited period:

Reviews

FREE: Nanostructure-induced DNA Condensation
Ting Zhou, Axel Llizo, Chen Wang, Guiying Xu and Yanlian Yang
DOI: 10.1039/C3NR01630G

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

FREE: Gold nanoparticles: preparation, properties, and applications in bionanotechnology
Yi-Cheun Yeh, Brian Creran and Vincent M. Rotello
DOI: 10.1039/C1NR11188D

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

FREE: Nano–bio effects: interaction of nanomaterials with cells
Liang-Chien Cheng, Xiumei Jiang, Jing Wang, Chunying Chen and Ru-Shi Liu
DOI: 10.1039/C3NR34276J

FREE: Bio-inspired magnetic swimming microrobots for biomedical applications
Kathrin E. Peyer, Li Zhang and Bradley J. Nelson
DOI: 10.1039/C2NR32554C

Original research

Chain relaxation dynamics of DNA adsorbing at a solid–liquid interface
Willem Vanderlinden and Steven De Feyter
DOI: 10.1039/C3NR34231J

Improving the understanding of oligonucleotide–nanoparticle conjugates using DNA-binding fluorophores
Luca Guerrini, Lee Barrett, Jennifer A. Dougan, Karen Faulds and Duncan Graham
DOI: 10.1039/C3NR01197F

Reversible Switches of DNA Nanostructures between “Close” and “Open” and Its Biosensing Applications
Qinglin Sheng, Ruixiao Liu, Jianbin Zheng and Junjie Zhu
DOI: 10.1039/C3NR01576A

Assessment of DNA complexation onto polyelectrolyte-coated magnetic silica nanoparticles
Ana B. Dávila-Ibáñez, Niklaas J. Buurma and Verónica Salgueiriño
DOI: 10.1039/C3NR34358H

Self-assembled magnetic theranostic nanoparticles for highly sensitive MRI of minicircle DNA delivery
Qian Wan, Lisi Xie, Lin Gao, Zhiyong Wang, Xiang Nan, Hulong Lei, Xiaojing Long, Zhi-Ying Chen, Cheng-Yi He, Gang Liu, Xin Liu and Bensheng Qiu
DOI: 10.1039/C2NR32438E

M1.3 – a small scaffold for DNA origami
Hassan Said, Verena J. Schüller, Fabian J. Eber, Christina Wege, Tim Liedl and Clemens Richert
DOI: 10.1039/C2NR32393A

Regulating DNA translocation through functionalized soft nanopores
Li-Hsien Yeh, Mingkan Zhang, Shizhi Qian and Jyh-Ping Hsu
DOI: 10.1039/C2NR30102D

Functional self-assembled DNA nanostructures for molecular recognition
Xiaojuan Zhang and Vamsi K. Yadavalli
DOI: 10.1039/C2NR11711H

Polyvalent DNA–graphene nanosheets “click” conjugates
Zihao Wang, Zhilei Ge, Xiaoxue Zheng, Nan Chen, Cheng Peng, Chunhai Fan and Qing Huang
DOI: 10.1039/C1NR11174D

Polycations-functionalized water-soluble gold nanoclusters: a potential platform for simultaneous enhanced gene delivery and cell imaging
Yu Tao, Zhenhua Li, Enguo Ju, Jinsong Ren and Xiaogang Qu
DOI: 10.1039/C3NR01326J

Singlet oxygen plays a key role in the toxicity and DNA damage caused by nanometric TiO2 in human keratinocytes
Ivana Fenoglio, Jessica Ponti, Elisa Alloa, Mara Ghiazza, Ingrid Corazzari, Robin Capomaccio, Diana Rembges, Simonetta Oliaro-Bosso and François Rossi
DOI: 10.1039/C3NR01191G

Atomic force microscopy reveals two phases in single stranded DNA self-assembled monolayers
Priscila Monteiro Kosaka, Sheila Gonzalez, Carmen Martinez, Alfonso Cebollada, Alvaro San Paulo, Montserrat Calleja and Javier Tamayo
DOI: 10.1039/C3NR01186K

To read more exciting research articles visit our Nanoscale website and our blog. You can also follow us on Facebook and Twitter.

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1st International Symposium on Nanocarbons (ISNC 2013)

25 Jun 2013

Nanoscale and Energy & Environmental Science (EES) were proud to co-sponsor the recent “1st International Symposium on Nanocarbons (ISNC 2013)“, which was held at the University of Science & Technology of China, Hefei.

Nanoscale Associate Editor and speaker at the conference, Professor Dirk Guldi, presented three student poster awards on behalf of Nanoscale and EES. The winners received prizes and certificates in the closing session.

The Poster Prizewinners

The latest international research on carbon materials, including carob nanotubes, graphene, fullerenes and hybrid carbon materials, as well as their broad applications in energy conversion, optoelectronics and biomedicine were covered at the meeting. The conference was a great success with over 160 participants.

Participants at ISNC2013

The Lecture Hall at ISNC2013

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Nanoscale & Nanoscale Advances Blog

Archive for the ‘News’ Category

Nanoscale Issue 18 of 2013 out now!

This week’s HOT articles

Next-generation vascular stents: Nanoscale article in Chemistry World

Measuring the environmental toxicity of engineered nanomaterials

Nanomagnets clean blood: Nanoscale article in Chemistry World

Free to access Cancer Nanotechnology collection 2013

This week’s HOT articles

Self-powering cloth electronics

New Nanoscale Associate Editor: Dr Yamuna Krishnan

1st International Symposium on Nanocarbons (ISNC 2013)

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