Pt nanoworms: creation of a bumpy surface on one-dimensional (1D) Pt nanowires with the assistance of surfactants embedded in mesochannels

2011 ◽  
Vol 47 (27) ◽  
pp. 7701 ◽  
Author(s):  
Azusa Takai ◽  
Hamed Ataee-Esfahani ◽  
Yoji Doi ◽  
Minekazu Fuziwara ◽  
Yusuke Yamauchi ◽  
...  
Keyword(s):  
One Dimensional ◽  
Pt Nanowires

Self-organized, one-dimensional Pt nanowires on Ge(001)

2003 ◽  
Vol 83 (22) ◽  
pp. 4610-4612 ◽  
Author(s):  
Oguzhan Gurlu ◽  
Omer A. O. Adam ◽  
Harold J. W. Zandvliet ◽  
Bene Poelsema
Keyword(s):  
One Dimensional ◽  
Self Organized ◽  
Pt Nanowires

Study on Fabrication Pt Nanowires for Memristor

2011 ◽  
Vol 58-60 ◽  
pp. 513-517
Author(s):  
Xiao Hui Bai ◽  
Dian Zhong Wen
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Preparation Method ◽  
Growth Speed ◽  
Aao Template ◽  
Oxidation Method ◽  
One Dimensional ◽  
Anodic Oxidation Method ◽  
Scanning Electron ◽  
Pt Nanowires

Introduced various preparation method of one dimensional nanowire and the merit and shortcoming of various methods, adopt two anodic oxidation method carry on oxadation to the aluminum sheet and Fabricate thickness about 15 ums, 50 nms nanohole diameter AAO template .In the H2PtCl6·6H2O+H3BO4 solutions carry on electrochemistry deposition to the AAO template.The deposited templates were characterized by scanning electron microscope (SEM ) , approval that growth speed of nanowires are the 1 um/h.After had electrochemistry deposited for 12h, the nanowire can pierce through AAO template.The length of nanowire is 15 ums, diameter is 50 nms. Nanowires are independent, they meet demand as conducting nanowires.

Highly stable one-dimensional Pt nanowires with modulated structural disorder towards the oxygen reduction reaction

2019 ◽  
Vol 7 (43) ◽  
pp. 24830-24836 ◽  
Author(s):  
Fanpeng Kong ◽  
Mohammad Norouzi Banis ◽  
Lei Du ◽  
Lijie Zhang ◽  
Lei Zhang ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
High Activity ◽  
Clean Energy ◽  
Structural Disorder ◽  
Reduction Reaction ◽  
One Dimensional ◽  
Pt Nanowires

Developing stable nanocatalysts with high activity for the oxygen reduction reaction (ORR) remains a great challenge in the field of clean energy.

Electron Microscopy Study of Novel Pt Nanowires Synthesized in the Spaces of Silica Mesoporous Materials

2002 ◽  
Vol 8 (1) ◽  
pp. 35-39 ◽  
Author(s):  
Osamu Terasaki ◽  
Zheng Liu ◽  
Tetsu Ohsuna ◽  
Hyun June Shin ◽  
Ryong Ryoo
Keyword(s):  
Electron Microscopy ◽  
Mesoporous Materials ◽  
Microscopy Study ◽  
Electron Microscopy Study ◽  
One Dimensional ◽  
Transmission Electron ◽  
3D Network ◽  
Materials Used ◽  
Mcm 41 ◽  
Pt Nanowires

Structures of Pt-nanowires, synthesized in channels of silica mesoporous materials MCM-41, SBA-15 and MCM-48, were investigated by transmission electron microscopy. One dimensional (1D) Pt-nanowires were formed inside the channels of the MCM-41, and were single crystals with a length of several tens to several hundreds nanometers and a diameter of ca. 3 nm Pt-nanowires synthesized in SBA-15 formed a new 3D-network following 3D-pore geometry of SBA-15; that is, the main 1D-channels are interconnected to each other through randomly distributed tunnels. These Pt-nanowires showed a well single crystalline. MCM-48 has two non-intersecting chiral channels, and Pt-networks were mostly formed in one of the two channels. Therefore the networks were also chiral; however, the chirality of Pt-networks remained to be determined. It was shown that all Pt-nanowires were formed following the channel geometries of silica mesoporous materials used.

A one-dimensional self-gravitating stellar gas

1966 ◽  
Vol 25 ◽  
pp. 46-48 ◽  
Author(s):  
M. Lecar
Keyword(s):  
Gravitational Field ◽  
Phase Space ◽  
Motion Picture ◽  
Space Distribution ◽  
Two Dimensional ◽  
One Dimensional ◽  
Phase Space Distribution ◽  
Dimensional Phase Space ◽  
The Mean

“Dynamical mixing”, i.e. relaxation of a stellar phase space distribution through interaction with the mean gravitational field, is numerically investigated for a one-dimensional self-gravitating stellar gas. Qualitative results are presented in the form of a motion picture of the flow of phase points (representing homogeneous slabs of stars) in two-dimensional phase space.

Electron-Mirror Microscopic Aspects of Ferroelectric Domains of BaTiO3 And Ca2Sr (C2H5CO2)6

1970 ◽  
Vol 28 ◽  
pp. 478-479
Author(s):  
Teruo Someya ◽  
Jinzo Kobayashi
Keyword(s):  
Surface Layer ◽  
Electric Fields ◽  
Quantitative Study ◽  
Recent Progress ◽  
Ferroelectric Domain ◽  
Resolving Power ◽  
Surface Pattern ◽  
Crystal Surfaces ◽  
One Dimensional ◽  
Ferroelectric Domains

Recent progress in the electron-mirror microscopy (EMM), e.g., an improvement of its resolving power together with an increase of the magnification makes it useful for investigating the ferroelectric domain physics. English has recently observed the domain texture in the surface layer of BaTiO3. The present authors ) have developed a theory by which one can evaluate small one-dimensional electric fields and/or topographic step heights in the crystal surfaces from their EMM pictures. This theory was applied to a quantitative study of the surface pattern of BaTiO3).

Structure and function of neural networks in the retina

1988 ◽  
Vol 46 ◽  
pp. 26-27
Author(s):  
Peter Sterling
Keyword(s):  
Ganglion Cells ◽  
Three Dimensional ◽  
Structure And Function ◽  
Synaptic Connections ◽  
Visual Axis ◽  
One Dimensional ◽  
Cat Retina ◽  
Ultrathin Sections ◽  
And Function ◽  
Insight Into

The synaptic connections in cat retina that link photoreceptors to ganglion cells have been analyzed quantitatively. Our approach has been to prepare serial, ultrathin sections and photograph en montage at low magnification (˜2000X) in the electron microscope. Six series, 100-300 sections long, have been prepared over the last decade. They derive from different cats but always from the same region of retina, about one degree from the center of the visual axis. The material has been analyzed by reconstructing adjacent neurons in each array and then identifying systematically the synaptic connections between arrays. Most reconstructions were done manually by tracing the outlines of processes in successive sections onto acetate sheets aligned on a cartoonist's jig. The tracings were then digitized, stacked by computer, and printed with the hidden lines removed. The results have provided rather than the usual one-dimensional account of pathways, a three-dimensional account of circuits. From this has emerged insight into the functional architecture.

Intergrowth of modulated structures in high Tc Bi-Sr-Ca-Cu-O superconductors

1990 ◽  
Vol 48 (4) ◽  
pp. 76-77
Author(s):  
A.Q. He ◽  
G.W. Qiao ◽  
J. Zhu ◽  
H.Q. Ye
Keyword(s):  
Twin Structure ◽  
Modulated Structure ◽  
High Tc ◽  
One Dimensional ◽  
Lattice Constants ◽  
Superconducting Phases ◽  
Modulated Structures ◽  
Layer Structures

Since the first discovery of high Tc Bi-Sr-Ca-Cu-O superconductor by Maeda et al, many EM works have been done on it. The results show that the superconducting phases have a type of ordered layer structures similar to that in Y-Ba-Cu-O system formulated in Bi2Sr2Can−1CunO2n+4 (n=1,2,3) (simply called 22(n-1) phase) with lattice constants of a=0.358, b=0.382nm but the length of c being different according to the different value of n in the formulate. Unlike the twin structure observed in the Y-Ba-Cu-O system, there is an incommensurate modulated structure in the superconducting phases of Bi system superconductors. Modulated wavelengths of both 1.3 and 2.7 nm have been observed in the 2212 phase. This communication mainly presents the intergrowth of these two kinds of one-dimensional modulated structures in 2212 phase.

Electronic structure studies of conducting polymers by electron energy-loss spectroscopy

1996 ◽  
Vol 54 ◽  
pp. 160-161
Author(s):  
J. Fink
Keyword(s):  
Electronic Structure ◽  
Conducting Polymers ◽  
Conjugated Polymers ◽  
Electron Acceptors ◽  
Electron Donors ◽  
Light Emitting ◽  
One Dimensional ◽  
New Class ◽  
Electrical Conductivities ◽  
Electron Energy Loss

Conducting polymers comprises a new class of materials achieving electrical conductivities which rival those of the best metals. The parent compounds (conjugated polymers) are quasi-one-dimensional semiconductors. These polymers can be doped by electron acceptors or electron donors. The prototype of these materials is polyacetylene (PA). There are various other conjugated polymers such as polyparaphenylene, polyphenylenevinylene, polypoyrrole or polythiophene. The doped systems, i.e. the conducting polymers, have intersting potential technological applications such as replacement of conventional metals in electronic shielding and antistatic equipment, rechargable batteries, and flexible light emitting diodes.Although these systems have been investigated almost 20 years, the electronic structure of the doped metallic systems is not clear and even the reason for the gap in undoped semiconducting systems is under discussion.

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