In Situ Optoelectrochemical Approach for the Dynamic Property Study of Polypyrrole Thin Film by Quartz Crystal Combined with UV‐Visible Advanced Design

1999 ◽  
Vol 146 (12) ◽  
pp. 4544-4550 ◽  
Author(s):  
JongMin Kim ◽  
SangMok Chang ◽  
Hiroshi Muramatsu
Keyword(s):  
Thin Film ◽  
Dynamic Property ◽  
Quartz Crystal ◽  
Uv Visible

Monitoring Organic Thin Film Growth In Aqueous Solution In-situ With A Combined Quartz Crystal Microbalance and Ellipsometry

2008 ◽  
Vol 1146 ◽  
Author(s):  
Amitabha Sarkar ◽  
Tapani Viitala ◽  
Tino Hofmann ◽  
Tom E. Tiwald ◽  
John A. Woollam ◽  
...  
Keyword(s):  
Thin Film ◽  
Aqueous Solution ◽  
Water Content ◽  
Quartz Crystal Microbalance ◽  
Quartz Crystal ◽  
Film Growth ◽  
High Water Content ◽  
Organic Thin Film ◽  
Polymer Thin Film

AbstractThe change of the visible light ellipsometric parameters and mechanical harmonic frequencies of a hydrophobic gold surface attached to a quartz crystal are measured in aqueous solution during deposition of synperonic polymer thin film. The ellipsometry data reveal the amount of polymer mass attached to the surface, while the mechanical resonance shifts are caused by the total mass attached to the surface. Analysis of the combined ellipsometry and quartz crystal microbalance data reveal that the polymer thin film has a high water content, and we determine in-situ, for the first time, the porosity, or the water content, of a polymer thin film in aqueous solution.

Environmental Monitoring of Acetic Acid Gas by Thin Film Polyaniline Sensor

2013 ◽  
Vol 864-867 ◽  
pp. 913-918 ◽  
Author(s):  
Ying Yan ◽  
Yu Ping Guo ◽  
Lan Kun Cai ◽  
Qiong Wu ◽  
Hao Zhou ◽  
...  
Keyword(s):  
Thin Film ◽  
Acetic Acid ◽  
Linear Correlation ◽  
Quartz Crystal ◽  
Living Environment ◽  
Severe Damage ◽  
Frequency Shifts ◽  
Acid Gas ◽  
Polyaniline Film

The acetic acid gas, as a kind of organic pollutants, can cause severe damage to both people and materials, and has received much attention as a problem. In this paper, a QCM sensor coated with the polyaniline film was employed as a gas sensor to detect the content of the acetic acid gas. The polyaniline film was electrochemical polymerized in situ on the silver electrode surface of quartz crystal microbalance (QCM) sensor and employed as sensing film for detection of acetic acid gas. Responses of the QCM sensors coated with the polyaniline film to different concentrations of the acetic acid gas as a function of time was presented. And the frequency shifts of QCM showed a linear correlation of the concentration of acetic acid gas. The result of our experiment fully indicated that the QCM sensor with the polyaniline film appear to respond effectively and sensitively to the acetic acid gas within the range of experimental concentrations. Such sensor will have potential application in our living environment for real-time monitoring.

Microgravimetric Corrosion Studies on UO2

2003 ◽  
Vol 807 ◽  
Author(s):  
Detlef H. Wegen ◽  
T. Gouder ◽  
M. Eckle ◽  
T. Wiss ◽  
J.-P. Glatz
Keyword(s):  
Thin Film ◽  
Cyclic Voltammetry ◽  
Weight Change ◽  
Quartz Crystal ◽  
Spent Fuel ◽  
Corrosion Studies ◽  
Fuel Storage ◽  
First Time ◽  
Micro Balance

ABSTRACTFor the first time at ITU electrochemical quartz crystal micro-balance has been used for the investigation of UO2 thin film oxidation. The combination of cyclic voltammetry with nano-gram weight change measurements in-situ has shown at least two steps in the initial stages of UO2 dissolution under oxidising conditions relevant to spent fuel storage.

Fabrication of a Quartz-Crystal-Microbalance/Optical-Waveguide Hybrid Sensor and In situ Evaluation of Vacuum-Evaporated Lead Phthalocyanine Thin Film

2013 ◽  
Vol 52 (5S1) ◽  
pp. 05DC20 ◽  
Author(s):  
Kazunari Shinbo ◽  
Akihiro Uno ◽  
Ryo Hirakawa ◽  
Akira Baba ◽  
Yasuo Ohdaira ◽  
...  
Keyword(s):  
Thin Film ◽  
Optical Waveguide ◽  
Quartz Crystal Microbalance ◽  
Quartz Crystal

The use of transmission and analytical electron microscopy in studying reactions and phase transformations in thin film

1993 ◽  
Vol 51 ◽  
pp. 842-843
Author(s):  
K. Barmak
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Phase Transformations ◽  
Analytical Electron Microscopy ◽  
Ex Situ ◽  
Multilayer Thin Films ◽  
Absolute Concentration ◽  
Analytical Electron ◽  
Deposition Step

Generally, processing of thin films involves several annealing steps in addition to the deposition step. During the annealing steps, diffusion, transformations and reactions take place. In this paper, examples of the use of TEM and AEM for ex situ and in situ studies of reactions and phase transformations in thin films will be presented.The ex situ studies were carried out on Nb/Al multilayer thin films annealed to different stages of reaction. Figure 1 shows a multilayer with dNb = 383 and dAl = 117 nm annealed at 750°C for 4 hours. As can be seen in the micrograph, there are four phases, Nb/Nb3-xAl/Nb2-xAl/NbAl3, present in the film at this stage of the reaction. The composition of each of the four regions marked 1-4 was obtained by EDX analysis. The absolute concentration in each region could not be determined due to the lack of thickness and geometry parameters that were required to make the necessary absorption and fluorescence corrections.

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