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Anisotropic dielectric properties of polyimides consisting of various molar ratios of meta to para diamine with trifluoromethyl group.(Statistical Data Included)
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WEN-LI QU (1)
TZE-MAN KO (2 *)
ROHIT H. VORA (3)
TAI-SHUNG CHUNG (1,3)
A series of copolyimides based on pyromellitic dianhydride (PMDA) with various molar fractions of 4,4'-(hexafluoro-isopropylidene)dianiline (4,4'-6F) and 3,3'-(hexafluoro-isopropylidene)dianiline (3,3'-6F) were synthesized by a two-step method. The five different composition copolyimides in the form of [[(PMDA+3,3'-6F).sub.m]/ [(PMDA+4,4'-6F)sub.n]]Rx were mainly characterized using a dielectric analyzer (DEA) by single surface sensor (in-plane direction) and thin ...
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Dielectric constant of Turkish timbers in the longitudinal direction at a 9.8-GHz frequency.
Magazine article from: Forest Products Journal
; ...require reliable results of the dielectric constant of the wood species of interest. In this paper, the dielectric constant of the most widely used tree...similar. In general, the dielectric constant increases within the range...
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A swept measurement for wireless material dielectric constant.(Technical Feature)
Magazine article from: Microwave Journal
; ...transmission line can be calculated using a dielectric constant of one, as shown in Figure 1...microwave material with a relative dielectric constant that is not equal to one, the impedance...value determined by the material's dielectric constant. Both the dielectric ...
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Japanese Inventor Develops Powders Relative Dielectric Constant Measuring Method
News Wire article from: US Fed News Service, Including US State News
; ...a method of measuring a relative dielectric constant of powders. According to the U...Trademark Office: "A relative dielectric constant of a mixed substance consisting...calculated, and then the relative dielectric constant of the mixed substance or a relative...
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Japanese Inventors Develop Dielectric Constant Measuring Apparatus
News Wire article from: US Fed News Service, Including US State News
; ...Saitama, Japan, have developed a dielectric constant measuring apparatus for measuring a dielectric constant of a dielectric substance. According...amp; Trademark Office: "A dielectric constant measuring apparatus for measuring...
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California Inventors Develop Low Dielectric Constant Film Deposition Method
News Wire article from: US Fed News Service, Including US State News
; ...method of depositing a low dielectric constant film on a substrate and post-treating the low dielectric constant film. According to the U...includes rapidly heating the low dielectric constant film to a desired high temperature...
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Singapore Inventors Develop Low Dielectric Constant Films Adhesion Improving Method
News Wire article from: US Fed News Service, Including US State News
; ...improving adhesion of low dielectric constant films to other dielectric...Trademark Office: "A low dielectric constant material layer is deposited on a substrate. The low dielectric constant material layer is treated...
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Low dielectric constant materials for advanced interconnects
Magazine article from: JOM
; ...obtain the combination of low-dielectric constant and good thermal and mechanical...corresponding increase in polarization and dielectric constant. For example, the rigidity and...polarizability and, therefore, a high dielectric constant. The general nature of the problem...
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Novellus' Ultra Low Dielectric Constant Materials Enable 32nm Device Integration.
PR Newswire
; ...Novellus has developed Dense ultra low dielectric constant (ULK) films that provide more...offers a five percent lower effective dielectric constant (k-effective) when combined...UVTP treatment results in a lower dielectric constant, but causes the porous films to...
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Maryland Inventors Develop Dielectric Constant Measurement Method
News Wire article from: US Fed News Service, Including US State News
; ...developed a method for measurement of dielectric constant. According to the U.S. Patent...for non-contact measurement of dielectric constant of low-k films. The technique...calibration curve to extract the dielectric constant of the sample under study. The...
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Japanese Inventors Develop Low Dielectric Constant Material with Thermal Resistance
News Wire article from: US Fed News Service, Including US State News
; ...Tokyo, have developed a low dielectric constant material with thermal resistance...There is provided a low dielectric constant material, which is excellent...thermal resistance, has low dielectric constant, and is applicable to a...
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