Ordered arrays of vertically aligned Au-nanotubes grafted with flocky Au/Ag-nanospikes based on electrodeposition and subsequent redox reaction

2015 ◽  
Vol 60 ◽  
pp. 104-108 ◽  
Author(s):  
Chao Hou ◽  
Guowen Meng ◽  
Zhulin Huang ◽  
Bin Chen ◽  
Chuhong Zhu ◽  
...  
Keyword(s):  
Redox Reaction ◽  
Ordered Arrays ◽  
Vertically Aligned

Ordered Arrays of Vertically Aligned [110] Silicon Nanowires by Suppressing the Crystallographically Preferred Etching Directions

Nano Letters ◽  
2009 ◽  
Vol 9 (7) ◽  
pp. 2519-2525 ◽  
Author(s):  
Zhipeng Huang ◽  
Tomohiro Shimizu ◽  
Stephan Senz ◽  
Zhang Zhang ◽  
Xuanxiong Zhang ◽  
...  
Keyword(s):  
Silicon Nanowires ◽  
Ordered Arrays ◽  
Vertically Aligned

Growing ordered arrays of vertically aligned copolymer nanowires for supercapacitors with high stability

2017 ◽  
Vol 21 (11) ◽  
pp. 3121-3127 ◽  
Author(s):  
Ming Qian ◽  
Nan Chen ◽  
Min Liu ◽  
Liang Cheng ◽  
Jing Li ◽  
...  
Keyword(s):  
High Stability ◽  
Ordered Arrays ◽  
Vertically Aligned

Carbon Nanotubes for the Development of Glucose Biosensors Based on Gold Electrodeposition

2011 ◽  
Vol 403-408 ◽  
pp. 1157-1162
Author(s):  
Firouzeh Karimi Moghadam ◽  
Meysam Hamzehlooei
Keyword(s):  
Redox Reaction ◽  
Porous Alumina ◽  
Glucose Biosensor ◽  
Preliminary Design ◽  
Gold Coating ◽  
Anodized Aluminum ◽  
Alumina Membrane ◽  
Anodized Aluminum Oxide ◽  
Cnt Arrays ◽  
Vertically Aligned

Superscript text Subscript textOur study is to develop a general design of biosensors based on vertically aligned Carbon Nanotube (CNT) arrays. Glucose biosensor is selected as the model system to verify the design of biosensors. In the preliminary design, glucose oxidase (GOx) is attached to the walls of the porous alumina membrane by adsorption. Porous highly ordered anodized aluminum oxide (AAO) are used as templates. Deposited gold on both sides of template surfaces serve as a contact and prevent non-specific adhesion of GOx on the surface. In order to find out optimized thickness of gold coating, the redox reaction in([Fe(CN)6]3-/[Fe(CN)6]4-system is monitored by CV. Subsequently, enzymatic redox reaction in glucose solutions is also attempted by CV. We expect protein layers with GOx from a conductive network. To take advantage of the attractive properties of CNTs, the design of enzyme electrodes is modified by attaching CNT onto the sidewalls of AAO template nanopores and then immobilizing GOx to the sidewalls and tips of CNTs. Cobalt is used as a catalyst to fabricate CNTs. As a result, MWCNTs are fabricated inside the AAO templates by CCVD.

scholarly journals Surface Nano-Patterning for the Bottom-Up Growth of III-V Semiconductor Nanowire Ordered Arrays

Nanomaterials ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 2079
Author(s):  
Valeria Demontis ◽  
Valentina Zannier ◽  
Lucia Sorba ◽  
Francesco Rossella
Keyword(s):  
Semiconductor Nanowires ◽  
Bottom Up ◽  
Semiconductor Nanowire ◽  
Preliminary Step ◽  
Ordered Arrays ◽  
Vertically Aligned ◽  
Size And Morphology ◽  
Nano Patterning

Ordered arrays of vertically aligned semiconductor nanowires are regarded as promising candidates for the realization of all-dielectric metamaterials and artificial electromagnetic materials, whose properties can be engineered to enable new functions and enhanced device performances with respect to naturally existing materials. In this review we account for the recent progresses in substrate nanopatterning methods, strategies and approaches that overall constitute the preliminary step towards the bottom-up growth of arrays of vertically aligned semiconductor nanowires with a controlled location, size and morphology of each nanowire. While we focus specifically on III-V semiconductor nanowires, several concepts, mechanisms and conclusions reported in the manuscript can be invoked and are valid also for different nanowire materials.

Vertically Aligned and Ordered Arrays of 2D MCo2S4@Metal with Ultrafast Ion/Electron Transport for Thickness-Independent Pseudocapacitive Energy Storage

ACS Nano ◽  
2020 ◽  
Vol 14 (10) ◽  
pp. 12719-12731
Author(s):  
Zongbin Hao ◽  
Xingchen He ◽  
Hongdou Li ◽  
Denis Trefilov ◽  
Yangyang Song ◽  
...  
Keyword(s):  
Energy Storage ◽  
Electron Transport ◽  
Ordered Arrays ◽  
Vertically Aligned ◽  
Thickness Independent

Vapor Detection Performance of Vertically Aligned, Ordered Arrays of Silicon Nanowires with a Porous Electrode

2011 ◽  
Vol 83 (12) ◽  
pp. 4724-4728 ◽  
Author(s):  
Christopher R. Field ◽  
Hyun Jin In ◽  
Nathan J. Begue ◽  
Pehr E. Pehrsson
Keyword(s):  
Silicon Nanowires ◽  
Porous Electrode ◽  
Detection Performance ◽  
Vapor Detection ◽  
Ordered Arrays ◽  
Vertically Aligned

RNA polymerase: Preparation and structural analysis of helical polymers

1984 ◽  
Vol 42 ◽  
pp. 152-153
Author(s):  
E. Loren Buhle ◽  
Pamela Rew ◽  
Ueli Aebi
Keyword(s):  
Structural Analysis ◽  
Rna Polymerase ◽  
Molecular Level ◽  
X Ray Diffraction ◽  
Helical Polymers ◽  
X Ray ◽  
E Coli ◽  
The Past ◽  
Ordered Arrays ◽  
Low Ionic Strength

While DNA-dependent RNA polymerase represents one of the key enzymes involved in transcription and ultimately in gene expression in procaryotic and eucaryotic cells, little progress has been made towards elucidation of its 3-D structure at the molecular level over the past few years. This is mainly because to date no 3-D crystals suitable for X-ray diffraction analysis have been obtained with this rather large (MW ~500 kd) multi-subunit (α2ββ'ζ). As an alternative, we have been trying to form ordered arrays of RNA polymerase from E. coli suitable for structural analysis in the electron microscope combined with image processing. Here we report about helical polymers induced from holoenzyme (α2ββ'ζ) at low ionic strength with 5-7 mM MnCl2 (see Fig. 1a). The presence of the ζ-subunit (MW 86 kd) is required to form these polymers, since the core enzyme (α2ββ') does fail to assemble into such structures under these conditions.

Experimental and Theoretical Comparable Study of Pure and Zinc Porphyrin Surface Modified ZnO Nanorod Arrays for Hybrid Solar Cell Applications

2020 ◽  
pp. 114-119
Keyword(s):  
Solar Cell ◽  
Electrochemical Impedance ◽  
Hybrid Solar Cell ◽  
Cell Performance ◽  
Solar Cell Performance ◽  
Solar Cell Efficiency ◽  
Cell Efficiency ◽  
Annealing Effects ◽  
Vertically Aligned ◽  
Surface Modified

Experimental and theoretical study Porphyrin-grafted ZnO nanowire arrays were investigated for organic/inorganic hybrid solar cell applications. Two types of porphyrin – Tetra (4-carboxyphenyle) TCPP and meso-Tetraphenylporphine (Zinc-TPP)were used to modify the nanowire surfaces. The vertically aligned nanowires with porphyrin modifications were embedded in graphene-enriched poly (3-hexylthiophene) [G-P3HT] for p-n junction nanowire solar cells. Surface grafting of ZnO nanowires was found to improve the solar cell efficiency. There are different effect for the two types of porphyrin as results of Zn existing. Annealing effects on the solar cell performance were investigated by heating the devices up to 225 °C in air. It was found that the cell performance was significantly degraded after annealing. The degradation was attributed to the polymer structural change at high temperature as evidenced by electrochemical impedance spectroscopy measurements.

Fabrication of Carbon Nanotube Triode Using Helicon Plasma Cvd with Electroplated Nico Catalyst

2003 ◽  
Vol 772 ◽  
Author(s):  
Masakazu Muroyama ◽  
Kazuto Kimura ◽  
Takao Yagi ◽  
Ichiro Saito
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Metal Catalyst ◽  
Ni Catalyst ◽  
Plasma Cvd ◽  
Helicon Plasma ◽  
Plasma Enhanced Cvd ◽  
Turn On ◽  
Aligned Carbon Nanotubes ◽  
Vertically Aligned

AbstractA carbon nanotube triode using Helicon Plasma-enhanced CVD with electroplated NiCo catalyst has been successfully fabricated. Isolated NiCo based metal catalyst was deposited at the bottom of the cathode wells by electroplating methods to control the density of carbon nanotubes and also reduce the activation energy of its growth. Helicon Plasma-enhanced CVD (HPECVD) has been used to deposit nanotubes at 400°C. Vertically aligned carbon nanotubes were then grown selectively on the electroplated Ni catalyst. Field emission measurements were performed with a triode structure. At a cathode to anode gap of 1.1mm, the turn on voltage for the gate was 170V.

Sign in / Sign up

Export Citation Format

Share Document