a novel electroluminescent molecular diode' a quantum electronic model of bioluminescence

voltage-current characteristics of the firefly photuris vermontica luminescent luciferin enzyme-catalyzed system (lecs) were obtained. from these measurements, a quantum electronic model was developed for calculating the activation energy (or energy gap) between the lecs electron donor-acceptor energy levels in it excited states. using th..

surface treatments and properties of carbon fibers

electrochemical surface treatment of carbon fibers (toray t 300 6k fibers) has been studied by an original continuous process the authors have investigated the electrolysis conditions and especially current densities by means of a cathodic nickel deposit which may, in certain conditions, simulate the electrolytic oxidation. the heterogene..

proceedings of the symposium on carbon fibers and composites

the following topics were dealt with' c-fibres and thin polymer-matrix, c-matrix, glass-matrix, cement-matrix and metal-matrix composites: processing and properties of c-fibres: fabrication and design of c-fibre composites: surface treatments and oxidation protection

effect of silicon surface cleaning on the initial stage of selective titanium silicide chemical vapor deposition

selective titanium silicide chemical vapor deposition (cvd) is a noteworthy method of forming self-aligned titanium silicide film on silicon surfaces to fabricate low resistance metal-silicon contacts in vlsis. a number of studies on selective titanium silicide cvd have been reported, but the influence of si surface cleanness on film grow..

photoacoustic ft-ir analysis of surface-modified kevlar 49 fibers

kevlar fiber-reinforced composites are limited in use by their comparatively low compressive properties relative to other high modulus fibers, generally attributed to low adhesion between kevlar fibers and the matrix resin. epichlorohydrin (ech) was reacted with metalated kevlar 49 fibers in an attempt to introduce epoxy groups on the sur..

water in keratin. piezoelectric, dielectric, and elastic experiments

to investigate actions of water in keratin, the piezoelectric, dielectric, and elastic constants are measured at 10 hz, at temperatures between -160 and 150 degrees c, and at various hydration levels. from changes in the piezoelectric, dielectric, and dynamic mechanical parameters with moisture content (m.c.), the authors have identified ..

terpene cleaning applications and technology

terpene hydrocarbon underbrush cleaning has been shown to be an effective replacement for detergent or chlorinated solvent underbrush cleaning. ec-7 spray cleaning technology has the potential to significantly stem the increased cfc use for surface mount assembly cleaning. the cleaning achieved with ec-7 has also been shown to be superior..

chitaline materials' soluble chitosan-polyaniline copolymers and their conductive doped forms

graft copolymers of polyaniline and chitosan have been synthesized. they are soluble in aqueous solution and form self-supporting materials, including thick films and fibers. upon protonic doping, conductivities rise from less than approximately=10/sup -7/ s/cm to the 10/sup -2/ to 10/sup -5/ s/cm range, depending on the initial chitosan-..

fiber optic transducers with external modulation for active checking in machine construction

the paper investigates fiber optic transducers with external modulation of the light flux intensity that are used for active control of the beats of rotating items during treatment, and also a search for the information parameters for transducers of this kind that permit estimation of the purity of surface treatment and checking on the li..

ceramic coating as an ultrahigh vacuum compatible protective surface treatment for aluminum alloys against reactive species

from its extremely low outgassing rate, the aluminum-alloy uhv system possesses substantial advantages in the fabrication processes of next-generation semiconductor devices. in order to realize the advantages, however, its vacuum properties must be tested under actual fabrication circumstances where the inner surface of the chamber is con..