Friday, September 19, 2014

Spontaneous assembly of strong and conductive graphene/polypyrrole hybrid aerogels for energy storage




Nanoscale , 2014, Advance Article

DOI: 10.1039/C4NR03322A, Paper

Rui Sun, Hongyuan Chen, Qingwen Li, Qijun Song, Xuetong Zhang

A spontaneous assembly approach was employed to fabricate graphene/polypyrrole hybrid aerogels with excellent mechanical properties and enhanced supercapacitor performance.

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Bioinspired polyethylene terephthalate nanocone arrays with underwater superoleophobicity and anti-bioadhesion properties

Nanoscale , 2014, Accepted Manuscript

DOI: 10.1039/C4NR04471A, Paper

Wendong Liu, Xueyao Liu, Jiaozi Fangteng, Shuli Wang, Liping Fang, Huaizhong Shen, Siyuan Xiang, Hongchen Sun, Bai Yang

This paper presents a facile method to fabricate bioinspired polyethylene terephthalate (PET) nanocone arrays via colloidal lithography. The aspect ratio (AR) of the nanocones can be finely modulated ranging from...

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Experimental realization of coexisting states of rolled-up and wrinkled nanomembranes by strain and etching control

Nanoscale , 2014, Accepted Manuscript

DOI: 10.1039/C4NR03986F, Paper

Peter Cendula, Angelo Malachias, Christoph Deneke, Suwit Kiravittaya, Oliver G. Schmidt

Self-positioned nanomembranes such as rolled-up tubes and wrinkled thin films have been potential systems for a variety of applications and basic studies on elastic properties of nanometer-thick systems. Although there...

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Flexible, Thorn-like ZnO-Multiwalled Carbon Nanotube Hybrid Paper for Efficient Ultraviolet Sensing and Photocatalyst Applications

Nanoscale , 2014, Accepted Manuscript

DOI: 10.1039/C4NR03921A, Paper

Dali Shao, Hongtao Sun, Jian Gao, Guoqing Xin, Mark Anthony Aguilar, Tiankai Yao, Nikhil Koratkar, Jie Lian, Shayla Sawyer

We report fabrication of a flexible, thorn-like ZnO-multiwalled carbon nanotube (MWCNT) hybrid paper with high aspect ratio for efficient ultraviolet (UV) sensing and photocatalyst applications. The thorn-like ZnO-MWCNT hybrid paper...

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Significant field enhancements in an individual silver nanoparticle near a substrate covered with a thin gain film

Nanoscale , 2014, Accepted Manuscript

DOI: 10.1039/C4NR03678F, Paper

Jinhong Xian, Linchun Chen, Hanben Niu, Junle Qu, Jun Song

In this paper, we propose a method to significantly enhance the local-field of a gap plasmonic system by placing a metallic nanoparticle in close proximity to a substrate covered with...

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AC Conductivity Parameters of Graphene Derived from THz Etalon Transmittance

Nanoscale , 2014, Accepted Manuscript

DOI: 10.1039/C4NR03222E, Paper

Weidong Zhang, Phi Huy Quoc Pham, Elliott R. Brown, Peter John Burke

THz frequency-domain transmittance measurements are carried out on chemical-vapor-deposition (CVD) graphene films transferred to high-resistivity silicon substrates, and packaged as a back-gated graphene field effect transistor (G-FETs). The graphene AC...

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Confinement-modulated junctionless nanowire transistors for logic circuits

Nanoscale , 2014, Accepted Manuscript

DOI: 10.1039/C4NR04047C, Communication

Francois Vaurette, Renaud Leturcq, Sylvie Lepilliet, B. Grandidier, Didier Stievenard

We report the controlled formation of nanoscale constrictions in junctionless nanowire field-effect transistors, that efficiently modulate the flow of the current in the nanowire. The constrictions act as potential barriers...

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Controlled Synthesis, Asymmetrical Transport Behavior and Luminescence Properties of Lanthanide Doped ZnO Mushroom-like 3D Hierarchical Structures

Nanoscale , 2014, Accepted Manuscript

DOI: 10.1039/C4NR04359F, Paper

Dan Yue, wei lu, Lin Jin, Chunyang Li, wen luo, Mengnan Wang, Zhen-Ling Wang, Jianhua Hao

Lanthanide doped ZnO mushroom-like 3D hierarchical structures have been fabricated by polyol-mediated method and characterized by various microstructural and optical techniques. The results indicate that the as-prepared ZnO: Ln3+ (Ln...

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Electrical conduction of nanoparticle monolayer for accurate tracking of mechanical stimulus in finger touch sensing

Nanoscale , 2014, Accepted Manuscript

DOI: 10.1039/C4NR04385E, Paper

Weihong Jiao, Lizhi Yi, Chao Zhang, Ke Wu, Juan Li, Lihua Qian, Shuai Wang, Yingtao Jiang, Biswajit Das, Songliu Yuan

Flexible strain gauge is an essential component in advanced human-machine interfacing, especially when it comes to many important mobile and biomedical appliances that require detection of finger touches. In this...

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Morphology of gold nanoparticles determined by full-curve fitting of the light absorption spectrum. Comparison with X-ray scattering and electron microscopy data

Nanoscale , 2014, Accepted Manuscript

DOI: 10.1039/C4NR04155K, Paper

Kostyantyn Slyusarenko, benjamin abecassis, Patrick Davidson, Doru Constantin

UV-Vis absorption spectroscopy is frequently used to characterize the size and shape of gold nanoparticles. We present a full-spectrum model that yields reliable results for the commonly encountered case of...

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Tailored synthesis of hierarchical spinous hollow titania hexagonal prisms via a self-template route

Nanoscale , 2014, Accepted Manuscript

DOI: 10.1039/C4NR03746D, Paper

Ye Zhang, Buyuan Guan, Duihai Tang, Xue Wang, Tao Wang, Bo Zhi, Dongmei Wang, Xiang Li, Yunling Liu, Qisheng Huo

Novel hierarchical spinous hollow titania hexagonal prisms are prepared through a facile fluorine-free self-template route by using Ti2O3(H2O)2(C2O4)[round bullet, filled]H2O (TC) hexagonal prisms as precursor. The hollowing transformation can be elucidated by...

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From Basic Physics to Mechanisms of Toxicity: "Liquid Drop" Approach Applied to Develop Predictive Classification Models for Toxicity of Metal Oxide Nanoparticles

Nanoscale , 2014, Accepted Manuscript

DOI: 10.1039/C4NR03487B, Paper

Jerzy Leszczynski, Natalia Novoselska, Victor E. Kuzmin, Bakhtiyor Rasulev, Agnieszka Gajewicz, Tomasz Puzyn

Many metal oxide nanoparticles are able to cause persistent stress to live organisms, including humans, when discharged to environment. To understand the mechanism of metal oxides nanoparticles toxicity and reduce...

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NiP2 nanosheet arrays supported on carbon cloth: an efficient 3D hydrogen evolution cathode in both acidic and alkaline solutions

Nanoscale , 2014, Accepted Manuscript

DOI: 10.1039/C4NR04866K, Communication

Ping Jiang, Qian Liu, Xuping Sun

Designing efficient and stable hydrogen-evolving catalysts made from earth-abundant elements is essential to the development of solar-driven water-splitting devices. In this communication, we report a two-step strategy for constructing NiP2...

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Ascorbic acid surface modified TiO2-thin layer as a fully integrated analysis system for visual simultaneous detection of organophosphorus pesticides

Nanoscale , 2014, Accepted Manuscript

DOI: 10.1039/C4NR04430D, Paper

Li Shun-Xing, Wen-Jie Liang, Fengying Zheng, Xiaofeng Lin, Jia-Bai Cai

TiO2 photocatalysis and colorimetric detection are coupled with thin layer chromatography (TLC) for the first time to constituting a fully integrated analysis system. Titania@polystyrene hybrid microspheres were surface modified with...

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Plasmonic Caged Gold Nanorods for Near-infrared Light Controlled Drug Delivery

Nanoscale , 2014, Accepted Manuscript

DOI: 10.1039/C4NR04400B, Paper

Wei Xiong, Romiza Mazid, Lim Wei Yap, xinyong Li, Wenlong Cheng

A new near-inferad light-controlled drug delivery system based on caged gold nanorods (CGNRs) is demonstrated. The loading and release process of drug payloads into/from CGNR nanocarriers were systematically investigated. The...

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Surface Functionalized Nanopore Titania Integrated Microfluidic Biochip

Nanoscale , 2014, Accepted Manuscript

DOI: 10.1039/C4NR03791J, Paper

Md Azahar Ali, saurabh Srivastav, Kunal Mondal, Pandurang M Chavhan, ved Varun Agrawal, Renu John, Ashutosh Sharma, B. D Malhotra

We demonstrate a novel and an efficient nanopore microfluidic biochip consisting of a functionalized chitosan/anatase titanium dioxide nanoparticles (antTiO2-CH) electrode integrated in a polymethylsiloxane (PDMS) microchannel assembly. The electrode surface...

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Visualising discrete structural transformations in germanium nanowires during ion beam irradiation and subsequent annealing




Nanoscale , 2014, Advance Article

DOI: 10.1039/C4NR04513K, Paper

Roisin A. Kelly, Justin D. Holmes, Nikolay Petkov

A correlative approach to observe discrete structural transformations incurring in one and the same Ge nanowire upon ion irradiation and subsequent in situ annealing.

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Significant enhancement of the electrical transport properties of graphene films by controlling the surface roughness of Cu foils before and during chemical vapor deposition




Nanoscale , 2014, Advance Article

DOI: 10.1039/C4NR03633F, Paper

Dongmok Lee, Gi Duk Kwon, Jung Ho Kim, Eric Moyen, Young Hee Lee, Seunghyun Baik, Didier Pribat

Graphene resistivity decreases as the surface roughness of the copper foils decreases. Small grain polycrystalline graphene films grown on pre-annealed and electropolished copper exhibit a sheet resistance of 210 [capital Omega] [square]-1 .

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Identification of intracellular gold nanoparticles using surface-enhanced Raman scattering




Nanoscale , 2014, Advance Article

DOI: 10.1039/C4NR04687K, Communication

Hai-nan Xie, Yiyang Lin, Manuel Mazo, Ciro Chiappini, Ana Sanchez-Iglesias, Luis M. Liz-Marzan, Molly M. Stevens

We present an effective method to distinguish intracellular from extracellular nanoparticles by selectively quenching the SERS signals from dye molecules adsorbed onto star-shaped gold nanoparticles that have not been internalized by cells.

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Structural evolution of NiAu nanoparticles under ambient conditions directly revealed by atom-resolved imaging combined with DFT simulation




Nanoscale , 2014, Advance Article

DOI: 10.1039/C4NR03559C, Paper

Xia Xiang, Jinlan Nie, Kai Sun, Li Zhang, Wei Liu, Johannes Schwank, Shifa Wang, Mian Zhong, Fei Gao, Xiaotao Zu

The dynamics of oxidation (top left) and reduction (top right) processes on Ni(111) surfaces of NiAu nanoparticles are illustrated based on HAADF imaging (bottom) and DFT simulation.

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Enhanced synergism of thermo-chemotherapy by combining highly efficient magnetic hyperthermia with magnetothermally-facilitated drug release




Nanoscale , 2014, Advance Article

DOI: 10.1039/C4NR03384A, Communication

Yang Qu, Jianbo Li, Jie Ren, Junzhao Leng, Chao Lin, Donglu Shi

We developed a magnetothermally-responsive nanocarrier (MTRN) for efficient thermo-chemotherapy by enhancing endocytosis, triggering drug release and up-regulating Heat Shock Protein 70 (HSP70) expression simultaneously.

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One pot synthesis of hollow Cu-doped Ru octahedral nanocages via an in situ generated metastable Cu nanoparticle template




Nanoscale , 2014, Advance Article

DOI: 10.1039/C4NR03308F, Communication

Donghwan Yoon, Suhyun Park, Jongsik Park, Jongchan Kim, Hionsuck Baik, Haesik Yang, Kwangyeol Lee

A facile synthetic strategy was developed for a hollow Cu-doped Ru octahedral nanostructure via an in situ generated metastable facet-controlled Cu nanooctahedron.

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Selenium/interconnected porous hollow carbon bubbles composites as the cathodes of Li-Se batteries with high performance




Nanoscale , 2014, Advance Article

DOI: 10.1039/C4NR03705G, Paper

Jingjing Zhang, Long Fan, Yongchun Zhu, Yanhua Xu, Jianwen Liang, Denghu Wei, Yitai Qian

A suitable content of selenium dispersed in interconnected porous hollow carbon bubbles displays excellent electrochemical performance for Li-Se batteries.

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300 mm Wafer-level, ultra-dense arrays of Au-capped nanopillars with sub-10 nm gaps as reliable SERS substrates




Nanoscale , 2014, Advance Article

DOI: 10.1039/C4NR04315D, Communication

Jiaqi Li, Chang Chen, Hilde Jans, Xiumei Xu, Niels Verellen, Ingrid Vos, Yasuaki Okumura, Victor V. Moshchalkov, Liesbet Lagae, Pol Van Dorpe

The 193 nm deep UV immersion lithography is leveraged to fabricate highly dense and uniform arrays of Au-capped Si nanopillars on a 300 mm wafer level for reliable surface enhanced Raman spectroscopy applications.

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Site-specific growth of AgPd nanodendrites on highly purified Au bipyramids with remarkable catalytic performance




Nanoscale , 2014, Advance Article

DOI: 10.1039/C4NR04190A, Paper

Lin Zhou, Zeke Liu, Han Zhang, Si Cheng, Li-Juan Fan, Wanli Ma

Site-specific growth of AgPd nanodendrites on highly purified gold bipyramids from core-shell to tipped nanostructures is achieved by coupling a galvanic replacement reaction with a co-reduction process.

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Large-volume hot spots in gold spiky nanoparticle dimers for high-performance surface-enhanced spectroscopy




Nanoscale , 2014, Advance Article

DOI: 10.1039/C4NR03509G, Paper

Anran Li, Shuzhou Li

Hot spots with both large electric field enhancement and large volumes can be obtained in spiky nanoparticle dimers.

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Superstable magnetic nanoreactors with high efficiency for Suzuki-coupling reactions




Nanoscale , 2014, Advance Article

DOI: 10.1039/C4NR04245J, Paper

Weihe Zhang, Xuecheng Chen, Tao Tang, Ewa Mijowska

Fe3 O4 -CNT-Pd@m-SiO2 catalyst with high catalytic activity was prepared through facial processes. Suzuki-coupling reaction was chose as the model reaction and the catalyst showed high catalytic activities.

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Bacterially synthesized ferrite nanoparticles for magnetic hyperthermia applications




Nanoscale , 2014, Advance Article

DOI: 10.1039/C4NR03004D, Paper

Eva Cespedes, James M. Byrne, Neil Farrow, Sandhya Moise, Victoria S. Coker, Martin Bencsik, Jonathan R. Lloyd, Neil D. Telling

Ferrite nanoparticles extracellularly synthesized by the bacteria Geobacter sulfurreducens show great potential for nanomedicine. These nanoparticles may allow both diagnostics and controlled hyperthermia in the biological environment.

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Tuning the color and photostability of perylene diimides inside polymer nanoparticles: towards biodegradable substitutes of quantum dots




Nanoscale , 2014, Advance Article

DOI: 10.1039/C4NR03718A, Paper

Kateryna Trofymchuk, Andreas Reisch, Ievgen Shulov, Yves Mely, Andrey S. Klymchenko

The color, brightness and photostability of fluorescent polymer nanoparticles can be tuned by controlling aggregation of encapsulated perylene diimide dyes.

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