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True-color real-time imaging and spectroscopy of carbon nanotubes on substrates using enhanced Rayleigh scattering

Wenyun Wu1,∫,  Jingying Yue1,∫, Xiaoyang Lin1,∫,  Dongqi Li1,∫, Fangqiang Zhu2, Xue Yin3, Jun Zhu3, Jiangtao Wang1, Jin Zhang1, Yuan Chen1, Xinhe Wang1, Tianyi Li1, Yujun He1, Xingcan Dai1 (*), Peng Liu1, Yang Wei1, Jiaping Wang1,4, Wei Zhang5, Yidong Huang5, Li Fan1, Lina Zhang1, Qunqing Li1,4, Shoushan Fan1, and Kaili Jiang1,4 (*)

 

1 State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics & Tsinghua每Foxconn Nanotechnology Research Center, Tsinghua University, Beijing 100084, China
2 Department of Physics, Indiana University-Purdue University Indianapolis, Indianapolis, Indiana, USA
3 State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instruments, Tsinghua University, Beijing 100084, China
4 Collaborative Innovation Center of Quantum Matter, Beijing 100084, China
5 Tsinghua National Laboratory for Information Science and Technology, Department of Electronic Engineering, Tsinghua University, Beijing 100084, China

 

DOI 10.1007/s12274-015-0779-x

Nano Research 2015, 8(8): 2721每2732

Address correspondence to Xingcan Dai, XingcanDai@tsinghua.edu.cn; Kaili Jiang, JiangKL@tsinghua.edu.cn.

Rayleigh scattering of nanomaterials can be greatly enhanced by the interface dipole enhancement effect. Consequently real-time true-color imaging of colorful single-walled carbon nanotubes (SWCNTs) on substrates has been successfully achieved under an optical microscope by wide field supercontinuum laser illumination, which facilitates high throughput chirality assignment of individual SWCNTs.

Remarkable anisotropic phonon response in uniaxially strained few-layer black phosphorus

Yanlong Wang1,∫, Chunxiao Cong1,∫, Ruixiang Fei2, Weihuang Yang1, Yu Chen1, Bingchen Cao1, Li Yang2 (*), and Ting Yu1,3 (*)

1 Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore
2 Department of Physics, Washington University in St. Louis, St. Louis, Missouri 63130, USA
3 Department of Physics, Faculty of Science, National University of Singapore, 117542, Singapore
These authors contributed equally to this work.

DOI 10.1007/s12274-015-0895-7

Nano Research 2015, 8(12): 3944每3953

Address correspondence to Ting Yu, yuting@ntu.edu.sg; Li Yang, lyang@physics.wustl.edu

We plot the measured phonon frequencies of the A g1, B2g, and A g2 modes of few-layer black phosphorus (BP) under uniaxial tensile strain along both the near-armchair and near-zigzag directions. The pronounced dependence of the strained phonon frequencies on crystal orientations can be ascribed to an anisotropic mechanical response to uniaxial strain in BP, as a result of its unique puckered crystal structure.

Magnetic control: Switchable ultrahigh magnetic gradients at Fe3O4 nanoparticles to enhance solution-phase mass transport

Kamonwad Ngamchuea, Kristina Tschulik (*), and Richard G. Compton (*)

Department of Chemistry, Physical & Theoretical Chemistry Laboratory, University of Oxford, South Parks Road, Oxford, OX1 3QZ, UK

DOI 10.1007/s12274-015-0830-y

Nano Research 2015, 8(10): 3293每3306

Address correspondence to Kristina Tschulik, tschulik.kristina@gmail.com; Richard G. Compton, richard.compton@chem.ox.ac.uk

Ultrahigh magnetic gradients at Fe3O4-nanoparticle-modified electrodes (>108 T﹞m-1) induce enhanced mass transport to the electrodes. This is attributed to the magnetic field gradient force and the superparamagnetic properties of nano-Fe3O4, which enable switching of the force using an external magnetic field.

Large-area growth of ultra-high-density single-walled carbon nanotube arrays on sapphire surface

Lixing Kang1,2,3, Yue Hu2, Hua Zhong4, Jia Si4, Shuchen Zhang2, Qiuchen Zhao2, Jingjing Lin2, Qingwen Li1 (*),
Zhiyong Zhang4, Lianmao Peng4, and Jin Zhang2 (*)

1 Division of Advanced Nanomaterials, Suzhou Institute of Nanotech and Nanobionics, Chinese Academy of Sciences, Suzhou 215123, China
2 Center for Nanochemistry, Beijing Science and Engineering Technology Research Center for Low Dimensional Carbon Materials,
College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
3 University of Chinese Academy of Sciences, Beijing 100049, China
4 Key Laboratory for the Physics and Chemistry of Nanodevices, Department of Electronics, Peking University, Beijing 100871, China

DOI 10.1007/s12274-015-0869-9

Nano Research 2015, 8(11): 3694每3703

Address correspondence to Jin Zhang, jinzhang@pku.edu.cn; Qingwen Li, qwli2007@sinano.ac.cn

Design of a novel and effective catalyst (Trojan-Mo catalyst) enabled successful synthesis of large-area, ultra-high-density (160 tubes/米m) single-walled carbon nanotubes (SWNTs) on sapphire surface.

Chemically modified STM tips for atomic-resolution imaging of ultrathin NaCl films

Zhe Li1, Koen Schouteden1, Violeta Iancu1, Ewald Janssens1, Peter Lievens1, Chris Van Haesendonck1(*), and Jorge I. Cerd芍2 (*)

1 Solid-State Physics and Magnetism Section, KU Leuven, BE-3001 Leuven, Belgium
2 Instituto de Ciencia de Materiales, ICMM-CSIC, Cantoblanco, 28049 Madrid, Spain

DOI 10.1007/s12274-015-0733-y

Nano Research 2015, 8(7): 2223每2230

Address correspondence to Chris Van Haesendonck, chris.vanhaesendonck@fys.kuleuven.be; Jorge I. Cerd芍, jcerda@icmm.csic.es

A chemically modified scanning tunneling microscope (STM) tip is fabricated by picking up a Cl ion from the NaCl surface. In comparison with a bare metal tip, the Cl-functionalized tip yields enhanced resolution accompanied by contrast reversal in the STM topograph.

A new C=C embedded porphyrin sheet with superior oxygen reduction performance

Yawei Li1, Shunhong Zhang2, Jiabing Yu1, Qian Wang2, Qiang Sun1,2,3 (*), and Puru Jena3

1 Department of Materials Science and Engineering, Peking University, Beijing 100871, China
2 Center for Applied Physics and Technology, Peking University, Beijing 100871, China
3 Department of Physics, Virginia Commonwealth University, Richmond, VA 23284, USA

DOI 10.1007/s12274-015-0795-x

Nano Research 2015, 8(9): 2901每2912

Address correspondence to sunqiang@pku.edu.cn

The porphyrin sheet with embedded C=C dimer exhibits superior oxygen reduction reaction (ORR) activity according to first-principles and microkinetics simulations.

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