Novel low-temperature processing of polymer dielectrics on organic substrates by variable frequency microwave processing

2003 ◽  
Author(s):  
R.V. Tanikella ◽  
S.A. Bidstrup Allen ◽  
P.A. Kohl
Keyword(s):  
Low Temperature ◽  
Microwave Processing ◽  
Variable Frequency ◽  
Organic Substrates ◽  
Polymer Dielectrics ◽  
Low Temperature Processing

Low Temperature Rapid Curing of Polymer Dielectrics on Metallized Organic Laminates by Variable Frequency Microwave Processing

2005 ◽  
Vol 2 (2) ◽  
pp. 142-154 ◽  
Author(s):  
Taehyun Sung ◽  
Sue A. Bidstrup Allen ◽  
Paul A. Kohl
Keyword(s):  
Dielectric Constant ◽  
Low Temperature ◽  
Elevated Temperatures ◽  
Similar Degree ◽  
Variable Frequency ◽  
Heating Rates ◽  
Residual Content ◽  
Polymer Dielectrics ◽  
Degree Of Curing ◽  
Curing Of Polymer

The curing of polymer dielectrics on organic laminates by variable frequency microwave (VFM) processing was studied. Polymer dielectrics, such as polyimides, normally require long cure times at elevated temperatures resulting in processing incompatibility with epoxy-based laminates due to the low thermal stability of the organic laminates. In this study, VFM processing was investigated as an alternative, low temperature technique for curing polyimide and benzycyclobutene (BCB) on metallized bismaleimide triazine/epoxy (BT) board. The VFM heating characteristics of the metallized (BT) boards were studied. The VFM heating rates of the BT boards strongly depended on the configuration, size, and shape of the copper patterns on the boards. The VFM curing of polyimide and BCB on the metallized BT boards was also performed. The curing condition was optimized to minimize board degradation. At the same board degradation level, the chemical, thermo-mechanical and electrical properties of the VFM cured film were compared with a film thermally cured using a conventional convection furnace. A higher degree of curing and lower dielectric constant was achieved for benzocyclobutene (BCB) films on BT boards processed using VFM curing than was obtained using conventional curing. VFM cured polyimide (PI 2611) showed a similar degree of curing and Young's modulus to conventionally cured PI 2611. However, the VFM cured PI 2611 showed a higher residual content solvent and a higher dielectric constant than conventionally cured PI 2611.

Development of High Permeability Core Materials for Embeddable Inductors in Flexible Organic Substrates

2003 ◽  
Vol 769 ◽  
Author(s):  
C. K. Liu ◽  
P. L. Cheng ◽  
S. Y. Y. Leung ◽  
T. W. Law ◽  
D. C. C. Lam
Keyword(s):  
Low Temperature ◽  
Sol Gel ◽  
Circuit Board ◽  
Organic Substrates ◽  
Circuit Boards ◽  
High Permeability ◽  
Electrical Measurements ◽  
Different Temperatures ◽  
Spiral Inductors ◽  
Ceramic Tape

AbstractCapacitors, resistors and inductors are surface mounted components on circuit boards, which occupy up to 70% of the circuit board area. For selected applications, these passives are packaged inside green ceramic tape substrates and sintered at temperatures over 700°C in a co-fired process. These high temperature processes are incompatible with organic substrates, and low temperature processes are needed if passives are to be embedded into organic substrates. A new high permeability dual-phase Nickel Zinc Ferrite (DP NZF) core fabricated using a low temperature sol-gel route was developed for use in embedded inductors in organic substrates. Crystalline NZF powder was added to the sol-gel precursor of NZF. The solution was deposited onto the substrates as thin films and heat-treated at different temperatures. The changes in the microstructures were characterized using XRD and SEM. Results showed that addition of NZF powder induced low temperature transformation of the sol-gel NZF phase to high permeability phase at 250°C, which is approximately 350°C lower than transformation temperature for pure NZF sol gel films. Electrical measurements of DP NZF cored two-layered spiral inductors indicated that the inductance increased by three times compared to inductors without the DP NZF cores. From microstructural observations, the increase is correlated with the changes in microstructural connectivity of the powder phase.

Changes in color characteristics of culinary products from turkey meat produced with the use of low-temperature heat treatment

Vsyo o myase ◽  
2020 ◽  
pp. 22-24
Author(s):  
Nasonova V.V. ◽  
◽  
Tunieva E.K. ◽  
Motovilina A.A. ◽  
Mileenkova E.V. ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Low Temperature ◽  
Production Technology ◽  
Meat Products ◽  
Oxidation Products ◽  
Turkey Meat ◽  
Color Characteristics ◽  
Low Temperature Processing ◽  
Temperature Heat ◽  
Temperature Heat Treatment

The paper presents the results of the study on the effect of low-temperature heat treatment on color characteristics and protein oxidation products depending on the method, temperature and duration of heat treatment of culinary products from turkey meat. At present, the use of low-temperature processing in the production technology for meat products with improved organoleptic indices is a topical direction.

scholarly journals Low-Temperature Processing of Dense HydroxyapatiteZirconia Composites

2008 ◽  
Vol 5 (1) ◽  
pp. 29-36 ◽  
Author(s):  
Yougojoti Nayak ◽  
Raghunath Rana ◽  
Swadesh Pratihar ◽  
Santanu Bhattacharyya
Keyword(s):  
Low Temperature ◽  
Low Temperature Processing

Oxide nanopowders from the low-temperature processing of metal oxide sols and their application as gas-sensing materials

2006 ◽  
Vol 118 (1-2) ◽  
pp. 105-109 ◽  
Author(s):  
Mauro Epifani ◽  
Elisabetta Comini ◽  
Raül Díaz ◽  
Jordi Arbiol ◽  
Pietro Siciliano ◽  
...  
Keyword(s):  
Low Temperature ◽  
Metal Oxide ◽  
Gas Sensing ◽  
Low Temperature Processing

scholarly journals Rapid and low temperature processing of mesoporous TiO2 for perovskite solar cells on flexible and rigid substrates

2017 ◽  
Vol 13 ◽  
pp. 232-240 ◽  
Author(s):  
Benjamin Feleki ◽  
Guy Bex ◽  
Ronn Andriessen ◽  
Yulia Galagan ◽  
Francesco Di Giacomo
Keyword(s):  
Solar Cells ◽  
Low Temperature ◽  
Perovskite Solar Cells ◽  
Mesoporous Tio2 ◽  
Low Temperature Processing

Low‐temperature processing of titanium nitride films by laser physical vapor deposition

1989 ◽  
Vol 54 (16) ◽  
pp. 1519-1521 ◽  
Author(s):  
N. Biunno ◽  
J. Narayan ◽  
S. K. Hofmeister ◽  
A. R. Srivatsa ◽  
R. K. Singh
Keyword(s):  
Low Temperature ◽  
Titanium Nitride ◽  
Vapor Deposition ◽  
Physical Vapor Deposition ◽  
Low Temperature Processing
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