scholarly journals Characterisation of C–F Polymer Film Formation on the Air-Bearing Surface Etched Sidewall of Fluorine-Based Plasma Interacting with AL2O3–TiC Substrate

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Alonggot Limcharoen ◽  
Pichet Limsuwan ◽  
Chupong Pakpum ◽  
Krisda Siangchaew
Keyword(s):  
Raman Spectroscopy ◽  
Electron Microscope ◽  
Photoelectron Spectroscopy ◽  
Isopropyl Alcohol ◽  
Film Formation ◽  
Air Bearing ◽  
Cleaning Process ◽  
Bearing Surface ◽  
X Ray ◽  
Scanning Electron

C–F polymer redeposition is generated on the etched sidewall of the patterned air-bearing surface (ABS). This C–F polymer is a by-product from fluorine-based plasma using a Surface Technology Systems multiplex-pro air-bearing etch (ABE). The morphology of the re-deposition and the composite element was observed by a scanning electron microscope (SEM). The chemical bonding results were characterised via X-ray photoelectron spectroscopy, attenuated total reflected infrared spectroscopy and visible Raman spectroscopy. The purpose of this work is to demonstrate a modification of AlF3re-deposition to C–F polymer re-deposition, which is easily stripped out by an isopropyl alcohol-based solution. The benefit of this research is the removal of the re-deposition in the resist strip process without additional cleaning process steps.

Demonstration of Modification from AlF3 Re-Deposition to Polymer Re-Deposition on Air Bearing Surface (ABS) Etched Sidewall of Fluorine-Based Plasma Etch on Al2O3-TiC Substrate

2011 ◽  
Vol 213 ◽  
pp. 93-97 ◽  
Author(s):  
Chupong Pakpum ◽  
Krisda Siangchaew ◽  
Pichet Limsuwan
Keyword(s):  
Infrared Spectroscopy ◽  
Electron Microscope ◽  
Isopropyl Alcohol ◽  
Side Wall ◽  
Air Bearing ◽  
Bearing Surface ◽  
Plasma Etch ◽  
Base Solution ◽  
Additional Process ◽  
Scanning Electron

In this work, C-F polymer rich re-deposition are generated on the etched side wall of the patterned Air Bearing Surface (ABS). This C-F rich polymer is a by product from using a Surface Technology Systems Multiplex-Pro Air Bearing Etch (ABE) tool that utilizes fluorine base plasma. The morphology of the re-deposition and elemental composition are investigated via scanning electron microscope. The chemical bonding information is characterized via attenuated total reflected infrared spectroscopy. The purpose of this work is to demonstrate the modification of AlF3 re-deposition to polymer rich re-deposition allows complete re-deposition removal with isopropyl alcohol base solution. This offers advantage as the re-deposition removal is incorporated during the resist strip process offering superior cleanliness of slider head without additional process steps.

Preparation of Carbon Nanofibers from Polyacrylonitrile Nanofibers by Electrospinning

2011 ◽  
Vol 415-417 ◽  
pp. 642-647
Author(s):  
En Zhong Li ◽  
Da Xiang Yang ◽  
Wei Ling Guo ◽  
Hai Dou Wang ◽  
Bin Shi Xu
Keyword(s):  
Electron Microscope ◽  
Carbon Nanofibers ◽  
Photoelectron Spectroscopy ◽  
Solution Concentration ◽  
Dimethyl Formamide ◽  
Ultrafine Fibers ◽  
X Ray ◽  
Scanning Electron ◽  
Pan Fibers

Ultrafine fibers were electrospun from polyacrylonitrile (PAN)/N,N-dimethyl formamide (DMF) solution as a precursor of carbon nanofibers. The effects of solution concentration, applied voltage and flow rate on preparation and morphologies of electrospun PAN fibers were investigated. Morphologies of the green fibers, stabilized fibers and carbonized fibers were compared by scanning electron microscope (SEM). The diameter of PAN nanofibers is about 450nm and the distribution of diameter is well-proportioned. Characterization of the elements changes of fibers were performed by X-ray photoelectron spectroscopy (XPS).

scholarly journals A Comparative Study of Carbon Nanotubes Synthesized from Co/Zn/Al and Fe/Ni/Al Catalyst

2011 ◽  
Vol 8 (3) ◽  
pp. 1014-1021 ◽  
Author(s):  
Ezekiel Dixon Dikio
Keyword(s):  
Carbon Nanotubes ◽  
Raman Spectroscopy ◽  
Electron Microscope ◽  
Thermogravimetric Analysis ◽  
Catalyst System ◽  
X Ray ◽  
Transmission Electron ◽  
Catalyst Systems ◽  
Synthesis Of Carbon Nanotubes ◽  
Scanning Electron

The catalyst systems Fe/Ni/Al and Co/Zn/Al were synthesized and used in the synthesis of carbon nanotubes. The carbon nanotubes produced were characterized by Field Emission Scanning Electron Microscope(FE-SEM), Energy Dispersive x-ray Spectroscopy(EDS), Raman spectroscopy, Thermogravimetric Analysis(TGA)and Transmission Electron Microscope(TEM). A comparison of the morphological profile of the carbon nanotubes produced from these catalysts indicates the catalyst system Fe/Ni/Al to have produced higher quality carbon nanotubes than the catalyst system Co/Zn/Al.

scholarly journals SEM imaging and XPS characterization of doped PVDF fibers

2021 ◽  
Vol 270 ◽  
pp. 01011
Author(s):  
Tereza Smejkalová ◽  
Ştefan Ţălu ◽  
Rashid Dallaev ◽  
Klára Částková ◽  
Dinara Sobola ◽  
...  
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Photoelectron Spectroscopy ◽  
Analytical Methods ◽  
Polyvinylidene Fluoride ◽  
X Ray ◽  
Xps Characterization ◽  
Good Biocompatibility ◽  
The Individual ◽  
Scanning Electron

Polyvinylidene fluoride (PVDF) is one of the most promising electroactive polymers; it exhibits excellent electroactive behaviours, good biocompatibility, excellent chemical resistance, and thermal stability, rendering it an attractive material for biomedical, electronic, environmental and energy harvesting applications. This work aims to further improve its properties by the inclusion of powders of piezoactive materials. Polyvinylidene fluoride was formed by electrospinning into fibres with a thickness of 1.5-0.3 µm and then examined in a scanning electron microscope. The work offers a description of the current procedure in the preparation of samples and their modification for examination in a scanning electron microscope, characterizes the individual components of doped fibres and deals with specific instruments used for various analytical methods. The work contains a theoretical introduction to the analytical methods to which the samples will be further subjected, such as energy dispersive X-ray spectroscopy (EDX), X-ray photoelectron spectroscopy (XPS). The obtained excellent properties of doped PVDF could be used in the design of sensors.

A study of the interaction of silver with amorphous chalcogenide films in the Scanning Electron Microscope

1990 ◽  
Vol 48 (4) ◽  
pp. 694-695
Author(s):  
A.G. Fitzgerald ◽  
S.M. Potrous
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Cross Sections ◽  
Photoelectron Spectroscopy ◽  
Depth Profiling ◽  
X Ray ◽  
Chalcogenide Films ◽  
Transmission Electron ◽  
Amorphous Chalcogenides ◽  
Scanning Electron

The diffusion of silver in amorphous chalcogenides is the basis for high-resolution lithographic applications. Previous studies of the diffusion of silver on contact with chalcogenide films has been studied by Auger depth profiling and the effects of photodoping on chemical bonding have been studied by x-ray photoelectron spectroscopy. Electron lithographic effects have been studied in the transmission electron microscope.The objective of the investigation described here has been to determine the degree of diffusion of silver in the amorphous chalcogenides, As2S3, As2Se3, GeS and GeSe when these films are in contact with thin silver films. The silver distribution has been determined by x-ray microanalysis of film cross-sections in the scanning electron microscope (SEM). Electron beam induced conductivity (EBIC) at points in these films has also been investigated.

Fabrication of g-C3N4/Y-TiO2 Z-scheme heterojunction photocatalysts for enhanced photocatalytic activity

2021 ◽  
Author(s):  
SongSik Pak ◽  
KwangChol Ri ◽  
Chenmin Xu ◽  
Qiuyi Ji ◽  
Dunyu Sun ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Fourier Transform ◽  
Photocatalytic Activity ◽  
Electron Microscope ◽  
Photoelectron Spectroscopy ◽  
X Ray Diffraction ◽  
X Ray ◽  
Transmission Electron ◽  
Scanning Electron

The g-C3N4/Y-TiO2 Z-scheme heterojunction photocatalysts were successfully synthesized. The powder X-ray diffraction, scanning electron microscopy, high-resolution transmission electron microscope, Fourier transform infrared spectroscopy, and X-ray photoelectron spectroscopy were used for...

scholarly journals A Fenton-Like Nanocatalyst Based on Easily Separated Magnetic Nanorings for Oxidation and Degradation of Dye Pollutant

Materials ◽  
2020 ◽  
Vol 13 (2) ◽  
pp. 332 ◽  
Author(s):  
Xiaonan Li ◽  
Jinghua Li ◽  
Weilu Shi ◽  
Jianfeng Bao ◽  
Xianyuan Yang
Keyword(s):  
Electron Microscope ◽  
Photoelectron Spectroscopy ◽  
Organic Dyes ◽  
Reaction Medium ◽  
Bromophenol Blue ◽  
Vibrating Sample Magnetometer ◽  
X Ray ◽  
Transmission Electron ◽  
Considerable Loss ◽  
Scanning Electron

In this study, uniform Fe3O4 magnetic nanorings (Fe3O4-MNRs) were prepared through a simple hydrothermal method. The morphology, magnetic properties, and structure of the product were characterized by transmission electron microscope (TEM), scanning electron microscope (SEM), high resolution transmission electron microscopy (HRTEM), vibrating sample magnetometer (VSM), X-ray powder diffraction (XRD), and X-ray photoelectron spectroscopy (XPS), respectively. The Fe3O4-MNRs were used as Fenton-like catalysts in the presence of hydrogen peroxide (H2O2) and showed excellent Fenton-catalytic activity for degradation of organic dyes such as Methylene blue (MB), Rhodamine B (RhB), and Bromophenol blue (BPB). Furthermore, the obtained Fe3O4-MNRs could be recycled after used for several times and still remained in a relative high activity and could rapidly be separated from the reaction medium using a magnet without considerable loss. All results reveal that Fe3O4-MNRs have potential for the treatment of dyes pollutants.

Co(OH)2 ELECTROCATALYST DECORATED ON TiO2 FILM FOR ENHANCED PHOTOELECTROCATALYTIC WATER OXIDATION

2020 ◽  
Vol 27 (11) ◽  
pp. 2050003
Author(s):  
HONGXIA LI ◽  
CHAO YANG ◽  
JIAN ZHANG ◽  
XIANGUO LIU ◽  
XUEFENG ZHANG
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Water Splitting ◽  
Transmission Electron Microscope ◽  
Photoelectron Spectroscopy ◽  
Water Oxidation ◽  
Low Cost ◽  
X Ray ◽  
Transmission Electron ◽  
Scanning Electron

Recently, Co(OH)2 has gained much attention as a promising electrocatalyst. Herein, we synthesized Co(OH)2-decorated TiO2 film for electrocatalytic water splitting by a facile and low-cost electrochemistry method, which possessed enhanced performance for oxygen evolution reaction. The results of X-ray diffractometry, transmission electron microscope, scanning electron microscope and X-ray photoelectron spectroscopy verify the successful decoration of Co(OH)2 electrocatalysts onto the surface of TiO2. Moreover, photoelectrocatalytic measurements illustrate that the Co(OH)2-decorated TiO2 shows higher current density than pure TiO2 sample. The results obtained in this work give deep insights into the development of photoelectrochemical water splitting.

Synthesis of Polyceriborosilazane via Substitution and Polymerization and Pyrolysis to SiBCN(Ce) Ceramics

2012 ◽  
Vol 512-515 ◽  
pp. 894-897
Author(s):  
Si Hui Wang ◽  
He Yun Wang ◽  
Fan Xing Meng ◽  
Ya Li Li
Keyword(s):  
Fourier Transform ◽  
Electron Microscope ◽  
High Temperature ◽  
Scanning Electron Microscope ◽  
Photoelectron Spectroscopy ◽  
Chemical Structure ◽  
X Ray ◽  
Metal Atoms ◽  
Functional Ceramics ◽  
Scanning Electron

Abstract: The introduction of metal atoms into SiBCN network allows the development of novel high temperature ceramics and functional ceramics. In this work, cerium (Ce) containing polyborosilazane (PBSZ) is synthesized through substitution and polymerization reactions. Ce atoms are incorporated into PBSZ through the lithium replacement of H in PBSZ followed by Ce replacement of lithium. The chemical structure of the PBSZ and as-synthesized Li containing PBSZ are analyzed by Fourier transform infrared (FTIR) shows that the bands at 598 and 1183 cm-1 which can be assigned to Li-N and Si-N-Li stretching. It is suggested that lithium is incorporated into PBSZ. PBSZCe is transformed into SiBCNCe ceramic by pyrolysed in argon. Scanning electron microscope shows that the SiBCNCe ceramics are porous on the surface and corallike in the section. The chemical bondings of SiBCNCe ceramics are BN, the BN, SiC and Si3N4 characterized by X-ray photoelectron spectroscopy.

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