Facile Synthesis, Large Optical Nonlinearity, and Excellent Thermal Stability of Hyperbranched Poly(aryleneethynylene)s Containing Azobenzene Chromophores

2006 ◽  
Vol 39 (4) ◽  
pp. 1436-1442 ◽  
Author(s):  
Zhen Li ◽  
Anjun Qin ◽  
Jacky W. Y. Lam ◽  
Yuping Dong ◽  
Yongqiang Dong ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Optical Nonlinearity ◽  
Facile Synthesis ◽  
Excellent Thermal Stability ◽  
Hyperbranched Poly ◽  
Thermal Stability Of

Microstructure studies of tungsten silicide schottky contacts on Gaas

1987 ◽  
Vol 45 ◽  
pp. 328-329
Author(s):  
Yih-Cheng Shih ◽  
E. L. Wilkie
Keyword(s):  
Thermal Stability ◽  
Field Effect Transistors ◽  
Schottky Contact ◽  
Schottky Contacts ◽  
Excellent Thermal Stability ◽  
Barrier Heights ◽  
Gaas Substrates ◽  
Film Adhesion ◽  
Threshold Voltages ◽  
Thermal Stability Of

Tungsten silicides (WSix) have been successfully used as the gate materials in self-aligned GaAs metal-semiconductor-field- effect transistors (MESFET). Thermal stability of the WSix/GaAs Schottky contact is of major concern since the n+ implanted source/drain regions must be annealed at high temperatures (∼ 800°C). WSi0.6 was considered the best composition to achieve good device performance due to its low stress and excellent thermal stability of the WSix/GaAs interface. The film adhesion and the uniformity in barrier heights and ideality factors of the WSi0.6 films have been improved by depositing a thin layer of pure W as the first layer on GaAs prior to WSi0.6 deposition. Recently WSi0.1 has been used successfully as the gate material in 1x10 μm GaAs FET's on the GaAs substrates which were sputter-cleaned prior to deposition. These GaAs FET's exhibited uniform threshold voltages across a 51 mm wafer with good film adhesion after annealing at 800°C for 10 min.

scholarly journals Facile synthesis of exfoliated vermiculite nanosheets as a thermal stabilizer in polyvinyl chloride resin

RSC Advances ◽  
2019 ◽  
Vol 9 (34) ◽  
pp. 19675-19679
Author(s):  
Weiliang Tian ◽  
Zhong Li ◽  
Kewei Zhang ◽  
Zhenhong Ge
Keyword(s):  
Thermal Stability ◽  
Hydrogen Chloride ◽  
Anion Exchange ◽  
Polyvinyl Chloride ◽  
Facile Synthesis ◽  
Excellent Thermal Stability ◽  
Thermal Stabilizer

Well-defined vermiculite nanosheets are exfoliated by a facile water-assisted anion-exchange approach. As its negatively charged laminates can stabilize hydrogen chloride, the VMT nanosheets show excellent thermal stability for PVC resin.

Thermal Stability of Solid Aluminum Electrolytic Capacitors with Conductive Polyaniline Counter Electrode

2012 ◽  
Vol 512-515 ◽  
pp. 1018-1021
Author(s):  
Xu Fei Zhu ◽  
Long Fei Jiang ◽  
Wei Xing Qi ◽  
Chao Lu ◽  
Ye Song
Keyword(s):  
Thermal Stability ◽  
Counter Electrode ◽  
Electrolytic Capacitor ◽  
Aluminum Electrolytic Capacitor ◽  
Dodecylbenzenesulfonic Acid ◽  
Excellent Thermal Stability ◽  
High Frequencies ◽  
Solid Aluminum ◽  
Good Thermal Stability ◽  
Thermal Stability Of

To overcome the risk of electrolyte leakage and the shortcoming of higher impedance at high frequencies for the conventional aluminum electrolytic capacitor impregnated with electrolyte solutions, solid aluminum electrolytic capacitor employing conducting polyaniline (PANI) as a counter electrode was developed. The as-fabricated solid capacitors have very low impedances at high frequencies and excellent thermal stability. The superior performances can be ascribed to high conductivity and good thermal stability of the camphorsulfonic acid (CSA)-dodecylbenzenesulfonic acid (DBSA) co-doped PANI.

Thermal stability of WAlN/WAlON/Al2O3-based solar selective absorber coating

MRS Advances ◽  
2016 ◽  
Vol 1 (41) ◽  
pp. 2807-2813 ◽  
Author(s):  
Atasi Dan ◽  
Kamanio Chattopadhyay ◽  
Harish C. Barshilia ◽  
Bikramjit Basu
Keyword(s):  
Thermal Stability ◽  
Stainless Steel ◽  
Stainless Steel Substrate ◽  
Steel Substrate ◽  
Rf Magnetron Sputtering ◽  
Thermal Conversion ◽  
Solar Absorptance ◽  
Excellent Thermal Stability ◽  
Oxidation In Air ◽  
Thermal Stability Of

AbstractThe solar absorptance property of W/WAlN/WAlON/Al2O3-based coatings, deposited by DC/RF magnetron sputtering on stainless steel substrate was studied by measuring the reflectance spectra in the wavelength range of 250 - 2500 nm. The effect of thermal annealing on the optical properties of the solar selective absorber coatings was investigated. Annealing the coatings at 450°C for 150 hrs in air did not show any significant change in the spectral properties of the absorber coating indicating the excellent thermal stability of the coating. The W layer acts as infrared reflective layer and diffusion barrier on stainless steel substrate. The top Al2O3 layer serves as dense shield to protect the under layers from oxidation in air. In summary, the present study indicates the potential application of W/WAlN/WAlON/Al2O3-based selective coatings in high temperature photo thermal conversion systems.

Synthesis and Characterization of a Novel Hyperbranched Poly(Diethynylbenzene-Silane)

2012 ◽  
Vol 560-561 ◽  
pp. 174-178
Author(s):  
Yan Zou ◽  
Hui Min Qi ◽  
Mei Ling Xu ◽  
Fa Rong Huang ◽  
Lei Du
Keyword(s):  
Thermal Stability ◽  
Grignard Reagent ◽  
Synthesis And Characterization ◽  
Polycondensation Reaction ◽  
Degree Of Branching ◽  
H Nmr ◽  
Hyperbranched Poly ◽  
Ft Ir ◽  
Thermal Stability Of

Hyperbranched poly(diethynylbenzene-silane) (hb-PDEBS) was synthesized through polycondensation reaction of diethynylbenzene Grignard reagent (A2) and trichlorosilane (B3), and its structure was characterized by FT-IR, 1H-NMR, GPC and Elemental Analysis. The degree of branching of hb-PDEBS was defined by 29Si-NMR and calculated to be about 0.68. The curing behavior of hb-PDEBS was investigated by DSC. Thermal stability of cured hb-PDEBS was examined by TGA, and its residue at 1000°C under nitrogen was 80.6%. Hb-PDEBS displayed a strong absorption due to π-π* transition and exhibited the most intensity structured emission with a maximum around 500 nm.

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