Abstract: A photoresist composition which includes hydroxycarborane either incorporated as a monomeric dissolution modifier or as pendent groups on a polymer backbone. The photoresist composition is particularly useful in a bilayer thin film imaging lithographic process in which ultraviolet radiation-imaging in a wavelength range of between about 365 nm and about 13 nm is employed.

Abstract: The invention relates to a polymeric, radiation-sensitive resist composition comprising (i) iodonium sulfonate radiation sensitive acid generator; (ii) a polymer; and (iii) an acid labile compound.

Abstract: Block copolymers of polyimide and poly (phenylquinoxaline) have been synthesized. They are useful, particularly as dielectric layers in thin film multilayer structures. The most preferred embodiments are formed from polyimides which are those from pyromellitic dianhydride and oxydianiline. The most preferred poly (phenylquinoxaline) is a monofunctional oligomer, which yields the best microstructure.

Abstract: A composition for the application of a planar polyimide coating having a glass transition temperature above 300.degree. C. comprises a solution in an anhydrous, aprotic solvent of an aromatic diamine and a dialkyldihydrogen pyromellitate which is more than 90% meta isomer.

Abstract: A surface coating of high glass temperature and superior mechanical properties along with excellent planarization and gap filling is used to coat substrates. The coating comprises a polyamide alkyl ester from a pyromellitic alkyl diester and a para-linked aromatic diamine dissolved in a solvent containing at least 10% of a co-solvent boiling above 220.degree. C.

Abstract: A process for making an image oxygen-reactive ion etch barrier using a polysilane that is resistant to resistive ion etching and is also a positive acting resist.

Abstract: A method for line narrowing in nuclear magnetic resonance (NMR) studies in solids is described. The method employs quasi-continuous amplitude modulation of an rf field wherein the field is eliminated at intervals for short periods of time at or about the time when the amplitude for both the maximum and minimum approach zero, these intervals creating windows where the NMR signal can be observed.

Abstract: An NMR (nuclear magnetic resonance) spectrometer has a permanent magnet provided with a field coil. A lock system cyclically pulses a deuterium lock sample to produce a FID (free induction decay) signal that is analyzed by measuring the time interval during which the FID signal crosses the zero axis a predetermined number of times. The measured interval is compared to a predetermined interval or set point, and the current through the field coil is adjusted in the direction tending to correct the field strength so as to maintain the measured interval equal to the preset interval. Such measurement, comparison and adjustment are done several times each second. When the sample is removed, the lock system retains the last field setting achieved with the sample.

Abstract: A method is described for the quantitative analysis of a solution in which the solvent produces a nuclear magnetic resonant (NMR) spectral peak that dominates the system. A first spectrum containing the peak is made by operation of a nuclear magnetic resonant spectrometer at a first gain setting. The NMR apparatus is a pulse-modulated, Fourier-transform type spectrometer. A second spectrum is produced in which a 180.degree. pulse is applied to invert the spectral component magnetization followed after a period of time by a 90.degree. pulse. The period of time is sufficient to allow the solvent or component producing the unwanted peak to relax from the inverted state to a point where there is minimum magnetization along the longitudinal axis. At this point, in many solutions the other components have completely relaxed so that the 90.degree.

Abstract: A composition for the application of a planar polymide coating having a glass transition temperature above 300.degree. C. comprises a solution in an anhydrous, aprotic solvent of .Iadd.the reaction product .Iaddend.of an aromatic diamine and a .[.dialkyldihydrogen.]. .Iadd.dialkyl .Iaddend.pyromellitate .Iadd.diacyl chloride .Iaddend.which .[.is more than.]. .Iadd.comprises about .Iaddend.90% .Iadd.or more .Iaddend.meta isomer.