scholarly journals Evaluation of Film Property and Strength in Hexagonal AlN Thin Film

2012 ◽  
Vol 61 (7) ◽  
pp. 598-603 ◽  
Author(s):  
Yoshiaki AKINIWA ◽  
Takuya WATANABE
Keyword(s):  
Thin Film ◽  
Film Property

scholarly journals Current Approach to Develop TiO2 Thin Film as Photocatalysts for Low-Density Plastic Degradation

2021 ◽  
Vol 20 (5) ◽  
Author(s):  
D. P. Dave ◽  
K. V Chauhan
Keyword(s):  
Thin Film ◽  
Photocatalytic Activity ◽  
Tio2 Thin Film ◽  
High Photocatalytic Activity ◽  
Current Approach ◽  
Film Deposition ◽  
Low Density ◽  
Human Beings ◽  
Film Property ◽  
Carbon Dioxide Co2

Low-density plastic bags waste disposal is a big issue in the current scenario which gives rise to grave threats to human beings and environmental health also. Amid the various approaches applied for dealing with the problem, photocatalytic biodegradation in visible light irradiation is an advanced prospect that has received attention nowadays. The present review paper is to provide an outline of the current progress on the synthesis of titania (TiO2) thin-film photocatalysts for solid waste removal. The Photocatalysis method contains the photoinduced redox reactions in the photocatalyst which facilitates the degrading of almost organic compounds like polyethylene into carbon dioxide (CO2), water, and other substance. One of the most excellent photocatalysts which has grabbed attention in an application is titania because of its high photocatalytic activity and chemical stability. The synthesis of the photocatalyst as a thin film is a result of the unfeasible application of conventional powder photocatalyst which may cause a certain environmental hazard. The photocatalyst-coated thin film along with some environmental applications have also been reviewed. Likewise, various approaches for modifying thin-film property, film deposition techniques, and deposition on various substrates are used for the enhanced photocatalytic activity of the TiO2 thin film.

Ferroelectric Film Synthesis, Past and Present: A Select Review

1990 ◽  
Vol 200 ◽  
Author(s):  
R. A. Roy ◽  
K. F. Etzold ◽  
J. J. Cuomo
Keyword(s):  
Thin Film ◽  
Nonvolatile Memory ◽  
Film Growth ◽  
Film Deposition ◽  
Film Property ◽  
History Of ◽  
Deposition Processes ◽  
Film Synthesis ◽  
Interface Layers ◽  
Property Control

ABSTRACTA review of the history of ferroelectric (FE) thin film synthesis is given covering the period of the 1960's to the present. Early methods, materials and applications are discussed. An assessment of the recent upsurge in activity takes note of current targeted applications, including nonvolatile memory, piezoelectric actuators, capacitors, and electro-optic devices. Focus is placed on similarities and differences in the most common film deposition processes. Comparison of microstructure and composition variation seen in films deposited by sputtering, laser ablation, and solution deposition is made. More detailed understanding of process-microstructure relations is stressed as necessary for film property control. Also discussed are the roles of substrate interactions and interface layers in thin film growth.

scholarly journals Effect of Substrate Temperature on CdTe Thin Film Property and Solar Cell Performance

2016 ◽  
Vol 31 (2) ◽  
pp. 141 ◽  
Author(s):  
CAO Sheng ◽  
WU Li-Li ◽  
FENG Liang-Huan ◽  
WANG Wen-Wu ◽  
ZHANG Jing-Quan ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cell ◽  
Substrate Temperature ◽  
Cell Performance ◽  
Cdte Thin Film ◽  
Film Property ◽  
Solar Cell Performance

Effects of argon to oxygen ratio and post annealing on R.F. sputtered SnO2 thin film for ethylene gas detection

2011 ◽  
Vol 1292 ◽  
Author(s):  
Hosang Ahn ◽  
Seon-Bae Kim ◽  
Dong-Joo Kim
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Gas Sensing ◽  
Gas Detection ◽  
Sno2 Thin Film ◽  
Processing Conditions ◽  
Film Property ◽  
Sensor Applications ◽  
Post Annealing ◽  
Oxygen Ratio

ABSTRACTOptimum processing conditions for fabricating SnO2 thin films were investigated to detect low ppm levels of ethylene gas for future on-field gas sensor applications. Different argon-to-oxygen ratios during R.F. sputtering were attempted to find the optimum gas ratio in depositing SnO2 thin film. Post-annealing was performed at 650°C to investigate the influence of film property change on ethylene sensing property of sensor. As-deposited and post-annealed films prepared under four different argon-to-oxygen ratios were studied by SEM, XRD, and sensitivity measurement. It was found that the stoichiometry and crystallinity of SnO2 films determined by post annealing was more influential than those by the argon to oxygen ratio during R.F sputtering on ethylene gas detection. An ethylene gas-sensing mechanism on R.F. sputtered SnO2 thin films for the design of processing conditions is proposed.

Measurement of Thermophysical Properties of Thin Film Shape Memory Alloys Using the 3-Omega Method

2005 ◽  
Author(s):  
Ankur Jain ◽  
Kenneth E. Goodson
Keyword(s):  
Thin Film ◽  
Thermal Conductivity ◽  
Thermal Properties ◽  
Shape Memory Alloys ◽  
Shape Memory ◽  
Thermophysical Properties ◽  
Temperature Oscillation ◽  
Free Standing ◽  
Film Property ◽  
Omega Method

The excellent mechanical properties of thin film shape memory alloys like Nickel-Titanium (NiTi) have led to their widespread use in MEMS-based micropumps, microactuators, microgrippers, etc. Shape memory based micropumps and actuators have superior work densities compared to other technologies. Characterization of thermophysical properties of these materials is important for modeling the behavior of NiTi-based microdevices. For example, the frequency response of shape-memory based microactuators depends on the rate of dissipation of thermal energy, which is a strong function of the thermal properties of the thin film. While bulk thermal properties of NiTi have been reported before, there exists very little work on measuring these properties for the thin film form. This paper uses the 3-ω method for measurement of thermal conductivity of NiTi thin films. NiTi is sputtered on a Silicon substrate, followed by patterning of a metal heater line. Front-to-backside alignment and Deep Reactive Ion Etching (DRIE) of the substrate results in a free standing thin film of NiTi. A sinusoidal electric current is passed through the metal heater, and the third harmonic of the voltage is measured using a lock-in amplifier. This is used to determine the temperature oscillation in the metal heater, which provides the thin film thermal conductivity using a recently developed analytical model for 3-ω measurements in a two-dimensional free standing thin film. The measured values are found to be much lower than the known bulk thermal conductivity of NiTi. This highlights the importance of thin film property measurements instead of using bulk properties. Data obtained in this work is likely to be useful for improved modeling of thin film shape memory based microdevices.

Accelerated HKUST-1 Thin-Film Property Optimization Using Active Learning

2021 ◽  
Author(s):  
Luke Huelsenbeck ◽  
Sangeun Jung ◽  
Roberto Herrera del Valle ◽  
Prasanna V. Balachandran ◽  
Gaurav Giri
Keyword(s):  
Thin Film ◽  
Active Learning ◽  
Film Property
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