Purposeful Chemical Design of Mocvd Precursors for Silicon-Based Systems

1988 ◽  
Vol 131 ◽  
Author(s):  
Bernard J. Aylett
Keyword(s):  
Thin Films ◽  
Design And Synthesis ◽  
Mild Conditions ◽  
Metal Silicides ◽  
Chemical Design ◽  
Mocvd Precursors ◽  
Silicon Based ◽  
Metal Bonds ◽  
Molecular Compounds

ABSTRACTIt is shown that volatile molecular compounds with silicon-metal bonds can act as effective MOCVD precursors to metal silicides, which aredeposited as thin films under relatively mild conditions. Strategies for the design and synthesis of such “prevenient” precursors are explored, and possible extensions of this approach are considered.

Charge Trapping and Degradation Properties of PZT Thin Films for MEMS

1996 ◽  
Vol 444 ◽  
Author(s):  
Hyeon-Seag Kim ◽  
D. L. Polla ◽  
S. A. Campbell
Keyword(s):  
Thin Films ◽  
Loss Factor ◽  
High Field ◽  
Microelectromechanical Systems ◽  
Charge Trapping ◽  
Metal Organic ◽  
Electrical Reliability ◽  
Silicon Based ◽  
Degradation Properties ◽  
Organic Decomposition

AbstractThe electrical reliability properties of PZT (54/46) thin films have been measured for the purpose of integrating this material with silicon-based microelectromechanical systems. Ferroelectric thin films of PZT were prepared by metal organic decomposition. The charge trapping and degradation properties of these thin films were studied through device characteristics such as hysteresis loop, leakage current, fatigue, dielectric constant, capacitancevoltage, and loss factor measurements. Several unique experimental results have been found. Different degradation processes were verified through fatigue (bipolar stress), low and high charge injection (unipolar stress), and high field stressing (unipolar stress).

Chemical design and synthesis of oxyanion and oxyfluoride cuprate superconductors

1994 ◽  
Vol 235-240 ◽  
pp. 158-161 ◽  
Author(s):  
C. Greaves ◽  
M. Al-Mamouri ◽  
P.R. Slater ◽  
P.P. Edwards
Keyword(s):  
Cuprate Superconductors ◽  
Design And Synthesis ◽  
Chemical Design

Thermal strain-induced dielectric anisotropy in Ba0.7Sr0.3TiO3 thin films grown on silicon-based substrates

2009 ◽  
Vol 106 (2) ◽  
pp. 024109 ◽  
Author(s):  
X. H. Zhu ◽  
B. Guigues ◽  
E. Defaÿ ◽  
C. Dubarry ◽  
M. Aïd
Keyword(s):  
Thin Films ◽  
Thermal Strain ◽  
Dielectric Anisotropy ◽  
Silicon Based

Some aspects of the formation and structural features of low nuclearity heterometallic carboxylates

2020 ◽  
Vol 92 (7) ◽  
pp. 1093-1110 ◽  
Author(s):  
Aleksey A. Sidorov ◽  
Natalia V. Gogoleva ◽  
Evgeniya S. Bazhina ◽  
Stanislav A. Nikolaevskii ◽  
Maksim A. Shmelev ◽  
...  
Keyword(s):  
Ligand Exchange ◽  
Direct Synthesis ◽  
Molecular Complexes ◽  
Structural Features ◽  
Exchange Reactions ◽  
Metal Core ◽  
Mild Conditions ◽  
Metal Organic ◽  
Heterometallic Carboxylates ◽  
Molecular Compounds

AbstractHeterometallic carboxylate complexes are of paramount interest in pure and applied coordination chemistry. Despite that plurality of such type compounds have been published to date, synthetic aspects of their chemistry often remain in the shadow of intriguing physical properties manifesting by these species. Present review summarizes reliable data on direct synthesis of low nuclearity molecular compounds as well as coordination polymers on their base with carboxylate-bridged {M2Mg} (M = Co2+, Ni2+, Cd2+), {M2Li2} (M = Co2+, Ni2+, Zn2+, VO2+), {M2Ln2} and {M2Ln} (M = Cu2+, Zn2+, Co2+) metal cores. Structural features and stabilization factors are considered and principal outcomes are confirmed by quantum-chemical calculations. Particular attention is paid to consideration of ligand-exchange reactions that allow controllable modification of heterometallic metal core under mild conditions giving diverse molecular complexes with modified ligand environment or Metal-Organic Frameworks with permanent porosity.

scholarly journals Conformation Study of Dual Stimuli-Responsive Core-Shell Diblock Polymer Brushes

Polymers ◽  
2018 ◽  
Vol 10 (10) ◽  
pp. 1084
Author(s):  
Kaimin Chen ◽  
Lan Cao ◽  
Ying Zhang ◽  
Kai Li ◽  
Xue Qin ◽  
...  
Keyword(s):  
Polymer Brushes ◽  
Core Shell ◽  
Stimuli Responsive ◽  
Research Topics ◽  
Design And Synthesis ◽  
Mild Conditions ◽  
The Core ◽  
Responsive Polymer ◽  
Stimuli Responsive Polymer ◽  
Shed Light

Stimuli-responsive nanoparticles are among the most popular research topics. In this study, two types of core-shell (polystyrene with a photoiniferter (PSV) as the core and diblock as the shell) polymer brushes (PSV@PNIPA-b-PAA and PSV@PAA-b-PNIPA) were designed and prepared using surface-initiated photoiniferter-mediated polymerization (SI-PIMP). Moreover, their pH- and temperature-stimuli responses were explored by dynamic light scattering (DLS) and turbidimeter under various conditions. The results showed that the conformational change was determined on the basis of the competition among electrostatic repulsion, hydrophobic interaction, hydrogen bonding, and steric hindrance, which was also confirmed by protein adsorption experiments. These results are not only helpful for the design and synthesis of stimuli-responsive polymer brushes but also shed light on controlled protein immobilization under mild conditions.

Laser synthesis of thin films of metal silicides

1992 ◽  
Vol 218 (1-2) ◽  
pp. 95-108 ◽  
Author(s):  
E D'Anna ◽  
G Leggieri ◽  
A Luches
Keyword(s):  
Thin Films ◽  
Laser Synthesis ◽  
Metal Silicides

Design and synthesis of dichromeno[2,3-b;3′,2′-e]pyridine-12,14-dione to evaluate its optical properties

2017 ◽  
Vol 41 (10) ◽  
pp. 3887-3893 ◽  
Author(s):  
Pritam Biswas ◽  
Jaydip Ghosh ◽  
Tapas Sarkar ◽  
Debabrata Jana ◽  
Chandrakanta Bandyopadhyay
Keyword(s):  
Cyclic Voltammetry ◽  
Optical Properties ◽  
Thermogravimetric Analysis ◽  
Dft Calculations ◽  
Design And Synthesis ◽  
Mild Conditions ◽  
Cv Measurements

An unambiguous synthesis of dichromeno[2,3-b;3′,2′-e]pyridine-12,14-diones has been developed under mild conditions and their optical properties have been evaluated by studying UV-vis absorption and photoluminescence (PL) spectroscopy, cyclic voltammetry (CV) measurements, DFT calculations and thermogravimetric analysis.

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