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Contents
Research Articles
Hollow spherical rare-earth-doped yttrium oxysulfate: A novel
structure for upconversion Gen Chen1,2, Fashen Chen1, Xiaohe
Liu1,*, Wei Ma1, Hongmei Luo2, Junhui Li1,*, Renzhi Ma3,Guanzhou
Qiu1 1 Central South University, China 2 New Mexico State
University, USA 3 National Institute for Materials Science, Japan
1093–1102
The monoclinic crystal polymorph of Y2O2SO4 has been
demonstrated to have excellent structural compatibility with
dopantrare-earth ions making it a promising material for
upconversion (UC) applications. The UC emission intensity of
calcined productswas significantly enhanced when compared with the
amorphous precursor, and the luminescent properties were also
affected by the ratio and concentration of dopant rare-earth ions
due to energy transfer and the symmetry of the crystal field.
Elevating mitochondrial reactive oxygen species by
mitochondria-targeted inhibition of superoxide dismutase with a
mesoporous silica nanocarrier for cancer therapy Yi Zhang1,2,
Zhengyan Hu1,2, Guiju Xu1,2, Chuanzhou Gao3, Ren’an Wu1,*, and
Hanfa Zou1,* 1 Dalian Institute of Chemical Physics, Chinese
Academy of Sciences, China
2 University of Chinese Academy of Sciences, China 3 Dalian
Medical University, China 1103–1115
Since mitochondrial superoxide dismutase (SOD2) is vital in
maintaining intracellular levels of reactive oxygen species (ROS),
a general strategy for killing cancer cells is reported by targeted
inhibition of SOD2 using 2-methoxyestradiol (2-ME, an inhibitor for
the SOD family) via an elaborately designed mitochondria-targeted
mesoporous silica nanocarrier (mtMSN). The elevation of
mitochondrial oxidative stress is demonstrated to be powerful in
cancer therapy.
Hierarchical porous metal ferrite ball-in-ball hollow spheres:
General synthesis, formation mechanism, and high performance as
anode materials for Li-ion batteries Shouli Li, Aihua Li, Ranran
Zhang, Yanyan He,Yanjun Zhai, and Liqiang Xu* Shandong University,
China 1116–1127
A general and facile high yield method for the synthesis of
CoFe2O4,NiFe2O4 and CdFe2O4 hierarchical porous ball-in-ball hollow
spheres has been developed. The as-obtained CoFe2O4 and NiFe2O4show
high reversible discharge capacity and good rate retention
performance which make them promising materials for use as the
anodes in lithium ion batteries.
Vol. 7, No. 8, August 2014
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Nano Research Vol. 7, No. 8, August 2014
SnO2@Co3O4 hollow nano-spheres for a Li-ion battery anode with
extraordinary performance Won-Sik Kim, Yoon Hwa, Hong-Chan Kim,
Jong-Hyun Choi, Hun-Joon Sohn, and Seong-Hyeon Hong* Seoul National
University, Republic of Korea 1128–1136
We report a facile route for the synthesis of SnO2@Co3O4 hollow
spheres and their extraordinary performance as an anode for
lithium-ion batteries.
Selective and localized laser annealing effect for highper-
formance flexible multilayer MoS2 thin-film transistors Hyukjun
Kwon1, Woong Choi2, Daeho Lee1,3, Yunsung Lee4, Junyeon Kwon4,
Byungwook Yoo5, Costas P. Grigoropoulos1,*, and Sunkook Kim4,* 1
University of California, Berkeley, USA 2 Kookmin University, South
Korea 3 Gachon University, South Korea 4 Kyung Hee University,
South Korea 5 Korea Electronics Technology Institute, South Korea
1137–1145
Flexible multilayer MoS2 field effect transistors (FETs)
enhanced by an ultra-short pulsed laser annealing process without
any inflicted thermal damage are demonstrated. The reduced contact
resistance after laser annealing provides significant improvements
intransistor performance, including higher peak field-effect
mobility,increased output resistance, increased self-gain, and
decreased subthreshold swing.
Enhanced Fabry–Perot resonance in GaAs nanowires through local
field enhancement and surface passivation Shermin Arab, P. Duke
Anderson, Maoqing Yao, Chongwu Zhou, P. Daniel Dapkus,Michelle L.
Povinelli, and Stephen B. Cronin* University of Southern
California, USA 1146–1153
We observed substantial improvements in the photoluminescence
(PL) efficiency and Fabry-Perot (FP) resonance of individual
GaAsnanowires through surface passivation and local field
enhancement.
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Research
Nano Research Vol. 7, No. 8, August 2014
TiO2 coated urchin-like SnO2 microspheres for efficient
dye-sensitized solar cells Amit Thapa1, Jiantao Zai2, Hytham
Elbohy1, Prashant Poudel1, Nirmal Adhikari1, Xuefeng Qian2,*, and
Qiquan Qiao1,* 1 South Dakota State University, USA 2 Shanghai Jiao
Tong University, China 1154–1163
TiO2 coated urchin-like SnO2 can suppress interfacial
recombinationof electrons, enhance dye loading capability and light
scattering ability. Dye-sensitized solar cells (DSSCs) based on
obtained materials show similar efficiency compared with pure
TiO2nanocrystalline photoanodes while only use ~55% amount of
dye.
Aqueous self-assembly and surface-functionalized nanodots for
live cell imaging and labeling Mei-Lang Kung1, Pei-Ying Lin1,
Chiung-Wen Hsieh1, and Shuchen Hsieh1,2,* 1 “National Sun Yat-sen
University”, Taiwan, China 2 Kaohsiung Medical University, Taiwan,
China 1164–1176
Schematic illustration of a conjugated self-assembled nanodot
(SAND) system for targeted cell imaging.
Polyacrylic acid sodium salt film entrapped Ag-nanocubes as
molecule traps for SERS detection Zhulin Huang1, Guowen Meng1,2,*,
Qing Huang3, Bin Chen1, Fei Zhou1, Xiaoye Hu1, Yiwu Qian1, Haibin
Tang1, Fangming Han1, and Zhaoqin Chu1 1 Institute of Solid State
Physics, Chinese Academy of Sciences, China
2 University of Science and Technology of China, China 3 Hefei
Institutes of Physical Science, Chinese Academy of Sciences,
China
1177–1187
By using networked polyacrylic acid sodium salt (PAAS) to trap
target molecules, an Ag-nanocubes@PAAS substrate is able to capture
molecules with weak binding affinity facilitating their effective
surface-enhanced Raman spectroscopy detection.
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Nano Research Vol. 7, No. 8, August 2014
Straight and kinked InAs nanowire growth observed in situ by
transmission electron microscopy Filip Lenrick*, Martin Ek†, Knut
Deppert, Lars Samuelson, and L. Reine Wallenberg* Lund University,
Lund 22100, Sweden † Present address: Haldor Topsøe A/S, Denmark
1188–1194
In situ growth observations of crystalline InAs nanowires have
been performed by transmission electron microscopy. Straight growth
and induced kinking behavior were studied using a closed cell.
Surface properties of encapsulating hydrophobic nano- particles
regulate the main phase transition temperature of lipid bilayers: A
simulation study Xubo Lin and Ning Gu* Southeast University, China
1195–1204
The main phase transition temperature of lipid bilayers can be
regulated by changing the surface roughness and surface molecule
density of encapsulating hydrophobic nanoparticles, which may
promote potential biomedical applications such as controllable drug
release.
Synthesis and electrocatalytic activity of Au@Pd core– shell
nanothorns for the oxygen reduction reaction Gengtao Fu2, Zhenyuan
Liu2, Yu Chen1,*, Jun Lin2, Yawen Tang2,*, and Tianhong Lu2 1
Shaanxi Normal University, China 2 Nanjing Normal University, China
1205–1214
Au@Pd core–shell nanothorns with porous surfaces exhibit
remarkably high electrocatalytic activity and durability for the
oxygen reduction reaction in the alkaline media.
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www.theNanoResearch.com∣www.Springer.com/journal/12274 | Nano
Research
Nano Research Vol. 7, No. 8, August 2014
Transparent paper-based triboelectric nanogenerator as a page
mark and anti-theft sensor Limin Zhang1, Fei Xue1, Weiming Du1,
Changbao Han1, Chi Zhang1, and Zhonglin Wang1,2,* 1 Beijing
Institute of Nanoenergy and Nanosystems, Chinese Academy of
Sciences, China
2 Georgia Institute of Technology, USA 1215–1223
We have integrated grating-structured paper-based triboelectric
nanogenerators (PTENGs) into a book as a self-powered anti-theft
sensor, which can effectively convert mechanical agitation during
handling the book pages into an electrical output to either drive a
commercial electronic device or trigger a warning buzzer.
Furthermore, different grating-structures on each page
producedifferent number of output peaks which can accurately
position the turned pages and record the pages flipped over.
Characterization of the thermal conductivity of La0.95Sr0.05CoO3
thermoelectric oxide nanofibers Weihe Xu1,2, Evgeny Nazaretski1,
Ming Lu1, Hamid Hadim2, and Yong Shi2,* 1 Brookhaven National Lab,
USA 2 Stevens Institute of Technology, USA 1224–1231
A novel method that can measure thermal conductivity of
individual thermoelectric oxide nanofibers prepared by
electrospinning has beendeveloped. La0.95Sr0.05CoO3 nanofibers with
diameters of 140 nm and290 nm were studied using this approach at
ambient temperature.
High thermal conductivity of suspended few-layer hexagonal boron
nitride sheets Haiqing Zhou1,2, Jixin Zhu1,2, Zheng Liu2, Zheng
Yan1, Xiujun Fan1,3, Jian Lin1, Gunuk Wang1, Qingyu Yan2,*, Ting
Yu2,*, Pulickel M. Ajayan1,*, and James M. Tour1,* 1 Rice
University, USA 2 Nanyang Technological University, Singapore 3
Beijing University of Technology, China 1232–1240
We report the experimental investigation of thermal conduction
in suspended few-layer hexagonal boron nitride (h-BN) sheets using
a noncontact micro-Raman spectroscopy method. The first-order
temperature coefficients for monolayer (1L), bilayer (2L) and
nine-layer (9L) h-BN sheets were found to be –(3.41 ± 0.12) × 10–2,
–(3.15 ± 0.14) × 10 and –(3.78 ± 0.16) × 10–2 cm–1·K–1,
respectively.The room-temperature thermal conductivity of few-
layer h-BN sheets was found to be around 243 W·m–1·K–1, which is
comparable to that of bulk h-BN, indicating their potential use as
important components to solve heat dissipation problems in thermal
manage-ment configurations.
Erratum to: Growth of silicon nanowires in aqueous solution
under atmospheric pressure (DOI 10.1007/s12274-014-0451-x) 1241
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