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Apr 19, 2021
04/21
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Tomlinson, M. J. (Michael John), 1942-
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v, 41 pages : 30 cm
Topics: Petroleum chemicals -- Experiments, Petrochemicals Industrial processes Experiments
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Jul 11, 2020
07/20
by
Monks, H. A
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332 pages : 22 cm
Topics: Metal-work, Manufacturing processes, Metals Industrial processes - For technicians
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239 pages : 31 cm
Topics: Engineering design, Engineering graphics, Industrial processes, Engineering Design Technical...
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iv, 20 pages
Topics: Plasma arc welding -- Safety measures, Safety engineering, Industrial processes, Welding Industrial...
Contract number N00014-10-C-0224 is a joint project between Clean Membranes and PoroGen. The project objective is to develop low-maintenance, high-flux, low-fouling water filtration modules for reverse osmosis (RO) pre-treatment in order to improve the desalination process onboard ships. Membrane modules developed in this project promise to exhibit improved flux and fouling resistance. This in turn will lead to more compact and efficient filtration systems that reduce maintenance and downtime,...
Topics: DTIC Archive, POROGEN CORP WOBURN MA, *ULTRAFILTRATION, *REVERSE OSMOSIS, *MEMBRANES, EPOXY RESINS,...
Various spinning trials of polyacrylonitrile (PAN) and PAN/carbon nanotube (CNT) fibers were conducted using single- and bi-component spinning to obtain precursor fiber for carbonization. Materials parameters, such as homo- vs co-polymer, as well as different molecular weight polymers were investigated. In order to obtain better precursor fiber with circular cross-sectional shape, gelation bath composition and bath temperature were varied in the spinning process. The precursor fiber containing...
Topics: DTIC Archive, NANO ENGINEERED MATERIALS CORP LAWRENCEVILLE GA, *CARBON FIBERS, ACRYLONITRILE...
The work was an effort to determine whether the performance of the new type Nylon 6 for personnel armor could be further optimized by variations in molecular weight, molecular weight distribution, orientation and crystallinity. The results, although negative in respect to the goals sought, nevertheless show that an investigation of fundamentally different types of fiber is needed to obtain significant improvements in tenacity, work-to-rupture, and attendant increases in impact resistance.
Topics: DTIC Archive, Mayer, Richard E, ALLIED CHEMICAL CORP PETERSBURG VA, *BODY ARMOR, *NYLON,...
This report covers the period between the completion of SBIR Phase I contract # DAA- H01-97-C-R114 and Phase II SBIR contract # DAA-H01-98-C-R107. This effort was expended, in response to contract # DAA-H01-98-P-R010. The general purpose of this work was to begin preparation for the above Phase II SBIR ahead of actual award so that the two year Phase II period could be more effectively completed. Advanced Cerametrics, Inc (ACI) determined that certain improvements were necessary to be made to...
Topics: DTIC Archive, French, Jonathan D, ADVANCED CERAMETRICS INC LAMBERTVILLE NJ, *CERAMIC FIBERS,...
The practical usefulness of carbon nanofibers depends on an economical process for creating the fibers. A process described in US Patent No 6,382,526 B1, referred to as the nanofiber by gas jet process, or briefly NGJ process was used to produce nanofibers from mesophase pitch, which were subsequently stabilized and carbonized to carbon fibers. The process produces nanofibers at such a high rate that it was necessary to move it out of a laboratory. Larger equipment and more space were acquired....
Topics: DTIC Archive, Reneker, Darrell, AKRON UNIV OH, *CARBON FIBERS, HIGH RATE, LOW COSTS,...
This project is designed to create new proteins based on naturally occurring spider silk proteins with the goal of controlling elasticity and tensile strength in fibers spun from the proteins. The new genes have been constructed in year 1, the proteins have been expressed and purified in this, year 2, and characterized to insure they are correct. We have now spun fibers from the produced silk proteins and started preliminary mechanical testing. The spinning process will need to be optimized but...
Topics: DTIC Archive, Lewis, Randolph V, WYOMING UNIV LARAMIE, *PROTEINS, *ELASTIC PROPERTIES, *SILK,...
The coaxial electrospinning technique was investigated as a novel method to create stabilized, enzyme-containing fibers that have the potential to provide enhanced protection from chemical agents. Electrospinning is a versatile technique for the fabrication of polymer fibers with large length (cm to km): diameter (nm to um) aspect ratios. The large surface to volume ratios, along with the biofriendly nature of this technique, enables the fabrication of fiber mats with high enzyme...
Topics: DTIC Archive, ARMY NATICK SOLDIER RESEARCH DEVELOPMENT AND ENGINEERING CENTER MA, *CHEMICAL AGENTS,...
Rapid-solidification method was applied to make Fe-15at%Ga and Fe-17at%Ga ribbons of 100 micrometers thickness. These ribbons have large magnetostriction of 270 ppm, where the coercive force exhibits a maximum value. The phenomenon is related to special metallic texture, that is, the ribbon has strongly 001-oriented textured fine columnar microstructure with grain size of 2-5 micrometers. The ribbon has little-hysteresis loop of magnetostriction and a good ductility (i.e., full bending is...
Topics: DTIC Archive, Okazaki, T, MARYLAND UNIV COLLEGE PARK, *DETECTORS, *SOLIDIFICATION, *IRON ALLOYS,...
The overall goal of this project is to demonstrate the feasibility of synthetic production of high-performance spider silk fibers for use in next-generation automotives, aerospace, body and vehicle armor, ropes, webbing, and advanced composites. This requires creating a system for producing the protein-based material with sufficient efficiency that, scaled up, would be commercially viable. Using cutting edge techniques in synthetic biology (e.g. gene design and synthesis), we created multiple...
Topics: DTIC Archive, REFACTORED MATERIALS INC SAN FRANCISCO CA, *PRODUCTION, *SILK, *SYNTHETIC BIOLOGY,...
Blended yarns were produced from a good grade of cotton (1 1/2 inch American-Egyptian) and nylon 420 (1 1/2-inch - 2.3 denier) with percentages of nylon of 0, 25, 50, 75, and 100. Blending was done at the picker and at the drawframe for each blend composition. All yarns were spun to a nominal 28(s) count (cotton system) with a twist-multiplier of 3.0. Cross-sections of these yarns were examined microscopically to determine the longitudinal, radial, and rotational distributions of the fibers. It...
Topics: DTIC Archive, Weiner, Louis I, ARMY NATICK LABS MA CLOTHING AND ORGANIC MATERIALS LAB, *COTTON...
Yarns of unidirectionally oriented discontinuous high-modulus fibers andwhiskers have been successfully produced in the laboratory by a modifiedvortex spinning process. Both core yarns in which the higher modulus fibersare overwrapped with organic or small diameter glass fibers and all- whisker-yarns have been spun. These yarns can be readily incorporated into plasticsas reinforcing agents by filament winding and related procedures. Thestrength of resulting composites is markedly superior to...
Topics: DTIC Archive, Tolbert, Thomas L, MONSANTO RESEARCH CORP ST LOUIS MO, *FIBERS, *SPINNING(INDUSTRIAL...
In this report, we describe the complex impedance of spin torque nano oscillator (STNO) devices. We determined that the STNO is a nonreactive, real-resistance device with single-valued resistance in the broadband frequency range of 500 MHz to 10 GHz (the limit of our test conditions), and that STNOs do not require an external circuit or conjugate matching to operate in a transmitter configuration. We report the first demonstration of the low-power (250 pW), high-frequency (9 GHz) microwave...
Topics: DTIC Archive, ARMY RESEARCH LAB ADELPHI MD SENSORS AND ELECTRON DEVICES DIRECTORATE, *TORQUE,...
We made significant progress in each of these general areas. We produced high resolution models and codes that simulate molten fiber manufacturing processes. We have fiber completed new inverse models and experiments by colleagues at the Department of Agriculture and Chemical Engineering at Ohio State University, which provide state of the art material characterization of dynamic surface tension, elongational viscosity, and elastic relaxation.
Topics: DTIC Archive, Forest, M. Gregory, OHIO STATE UNIV COLUMBUS, *SPINNING(INDUSTRIAL PROCESSES),...
The objective of this project was to develop manufacturing methods necessary to reduce the high machining cost associated with high-strength castings and forgings currently used in Army missile systems. The project aimed at developing the squeeze casting process for the purpose of (1) lowering the cost of the castings with minimum subsequent machining requirements, (2) casting preforms to replace more costly forged preforms for subsequent shear spinning, and (3) developing the process for a...
Topics: DTIC Archive, Virani,M, IIT RESEARCH INST CHICAGO IL, *MANUFACTURING, *COST EFFECTIVENESS,...
Fibers with an anion exchange capacity as high as 2.7 meq/g were obtained by preparing ion exchange resins in situ within two phase fiber systems. Initially, blends of polypropylene with acrylonitrile-butadiene (NBR) and a styrene containing polymer (ABS) WERE MELT SPUN INTO TWO PHASE FIBERS, THEN DRAWN AND CROSSLINKED WITH PEROXIDE OR HEAT. Following this, the fibers were chloromethylated with chloromethyl methyl ether and aminated with diethylenetriamine. Unfortunately, the resulting fibers...
Topics: DTIC Archive, Smith, Malcolm J, UNIROYAL INC MIDDLEBURY CT, *ION EXCHANGE RESINS, *SYNTHETIC...
The central theme in the study for viscoelastic flows is the modeling of thin filament flows. In particular, we want to address the issues that industries are interested in such as derivation and evaluation of reliable low-dimensional models, temperature distribution along the spinline and radial variation in fiber spinning processes and modeling of crystallization in fiber spinning processes. Our platform in addressing these issues is based on the Maxwell, Johnson-Segalman constitutive...
Topics: DTIC Archive, Wang, Qi, INDIANA UNIV-PURDUE UNIV AT INDIANAPOLIS, *VISCOELASTICITY,...
Experiments performed in a gyroscope containing liquid-filled cylindrical cavities were conducted to study the effects of central rod-liquid interference. The results of these tests give evidence that the case of the partially wetted rod can be encompassed by making use of previously reported solutions which consider either an air core or a fully wetted rigid rod.
Topics: DTIC Archive, D'Amico, William P, ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD,...
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Feb 15, 2021
02/21
by
Industrial Use of Thermochemical Data (1979 : University of Surrey)
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x, 427 pages : 21 cm
Topics: Heat engineering -- Congresses, Thermodynamics -- Congresses, Information storage and retrieval...
An Al alloy with a chemical composition of Al85Ni10La5 (at.%) has been selected for exploratory development of new bulk nanostructured Al alloys aiming at ultra-high strength as well as good wear performance for future Army systems. The selected alloy has a high potential to be a candidate due to its inherent good glass forming ability, thermal stability and mechanical properties. Amorphous powders of the Al85Ni10La5 alloy were produced using a gas atomization technique. These powders can be...
Topics: DTIC Archive, Lavernia, E J, CALIFORNIA UNIV IRVINE, *ALUMINUM ALLOYS, *ARMY EQUIPMENT, *WEAR...
The solution processing of polybenzoxazole (PBO) and polybenzthiozole (PBT) to form oriented solids is discussed. The rheological considerations important in solution processing are considered, with special emphasis on the dry-jet wet spinning process used to form fibers. Pertinent rheological time constants and orientation parameters are measured by cone-and-plate rheometry and parallel plate flow birefringence. Solution processing experiments to evaluate the proposed process models are...
Topics: DTIC Archive, Berry, G. C., CARNEGIE-MELLON UNIV PITTSBURGH PA, *POLYMERS, *PROCESSING, *RODS, TEST...
The goal of this program was to produce continuous strong CNT-based fibers. The production of continuous fibers was met and we have matched 2/3 of the strength of what has been previously reported with CNT-PAN fibers. We believe that with additional spinning process optimization we can increase the resultant fiber strength. All of the mechanical data shown (below) was generated from a non-optimized spinning process. This preliminary data generated from just the first fiber run shows promising...
Topics: DTIC Archive, Ait-Haddou, Hassan, ZYVEX CORP RICHARDSON TX, *FIBERS, *MECHANICAL PROPERTIES,...
The semiconductor fabrication technique of spinning photoresist was modified and applied to the problem of creating a uniform coating of phosphor on a betaphotovoltaic (BPV) device. A mixture of phosphor was applied to 3 samples (Si, GaN, and a GaN die with devices fabricated on its surface), and all 3 samples were spun at various speeds using a spinner. A uniform coating of phosphor was not achieved for 2 reasons: the phosphor does not fully dissolve in water, and the phosphor mixture does not...
Topics: DTIC Archive, ARMY RESEARCH LAB ADELPHI MD SENSORS AND ELECTRON DEVICES DIRECTORATE, *PHOTOELECTRIC...
This report documents efforts performed, between May 2011 and November 2012, under a Broad Agency Announcement contract between the American Sheep Industry Association (ASI) and the Natick Soldier Research, Development and Engineering Center (NSRDEC). The objective was to develop flame resistant combat uniform fabrics with improved strength by spinning aramid (Nomex and Kevlar)/wool blend yarns on the long staple yarn spinning system rather than the more commonly used short staple spinning...
Topics: DTIC Archive, AMERICAN SHEEP INDUSTRY ASSOCIATION CENTENNIAL CO, *ARAMID FIBERS, *FIRE RESISTANT...
Quantitative measurements of melt puddle dynamics and the associated characteristics of continuously solidified ribbon products were made as a function of materials combinations and processing conditions. A three-phase approach was taken to separately evaluate the effects of processing parameter variations, of melt chemistry, and of substrate composition. In Phase 1 two processing parameters, the melt delivery rate and the circumferential wheel velocity, were systematically varied for metalloid...
Topics: DTIC Archive, Adler,R P I, GTE LABS INC WALTHAM MA, *DYNAMICS, *SOLIDIFICATION, *CONTINUOUS...
Preparatory Manual of Explosives Ledgard
Topics: mixture, grams, milliliters, acid, reaction, nitric, explosive, process, methylene, sulfuric,...
The work covered by this report consisted of the design and manufacture of different length, combustible, rigid propellant containers as potential replacements for the bag charge presently in use. Matched metal molding and spiral wrapping processes were utilized with five different product formulations. No significant problems were encountered during manufacture. Both processes were successfully in producing a chemically and dimensionally acceptable product. Marbon resin was successfully...
Topics: DTIC Archive, Haley, Jack, ARMTEC DEFENSE PRODUCTS INC COACHELLA CA, *AMMUNITION CONTAINERS,...
Spincasting is not new or novel. The principle has been known since Newton's laws were first applied to derive the basic theories of hydrodynamics, and even before that parabolic shapes of spinning liquids were noted by many mathematicians. In 1901 Albert Krank of Warkaue, Grand Duchy of Finland, Imperial Russia, was granted a U.S. patent for a method of capturing a liquid paraboloid in solid form. In 1908 the famed American physicist, R.W. Wood, observed the stars and planets in his spinning...
Topics: DTIC Archive, JET PROPULSION LAB PASADENA CA, *SPINNING(INDUSTRIAL PROCESSES), *CASTING,...
Optimal ceramic reinforced CMS's and MMC's are the key to the success of many Air Force programs because of the significant promise these lightweight, high strength materials offer for meeting projected performance and protection requirements for a wide variety of aerospace applications. This Phase I program has explored methods of producing continuous yttrium aluminum garnet (Y3Al5O12) and mullite (3Al2O3.SiO2) fibers. In Task 1, synthesis reactors have been constructed with 12:1 and 50:1...
Topics: DTIC Archive, Svedberg, Robert, ADVANCED MODULAR POWER SYSTEMS INC ANN ARBOR MI, *YTTRIUM ALUMINUM...
The use of passive piezoelectric damping using PZT ceramics has been demonstrated in theory and the number of experiments. The effort was multifaceted. For application of the shunted passive piezoelectric damping of structural composites, piezoelectric ceramic fibers (PZT family) of several tens of micron diameter were produced using sol gel spinning process. Since these fibers were not strong enough to withstand handling for continuous poling process, slurry extruded PZT MicroRods,(12O um in...
Topics: DTIC Archive, Yoshikawa, Shoko, PENNSYLVANIA STATE UNIV UNIVERSITY PARK MATERIALS RESEARCH LAB,...
The project provides a spinning process that results in continuous nanotube composite fibers that are about an order of magnitude tougher than any fibers made by mankind or nature. We make two hundred-meter long reels of continuous nanotube-polymer composite fiber at 70X the prior-art rate and achieve fiber strengths higher than 1.8 GPa. Our drawn nanotube fibers match the energy absorption capability of spider silk up to the breaking strain of this silk (30%), and continue absorbing energy...
Topics: DTIC Archive, Baughman, Ray H, TEXAS UNIV AT DALLAS RICHARDSON, *FIBERS, *FIBER REINFORCED...
Contents: Spiral Motor Springs--Torque-turn characteristics of non- spinning motor springs; Spin effect on motor spring, axially symmetric solutions, eccentricity of deformation; Pivot and Journal Friction; Beam Hair Spring Problems; Torsion Hair Spring.
Topics: DTIC Archive, TECHNIK INC JERICHO NY, *STRUCTURAL COMPONENTS, *TIME DELAY FUZES, BUCKLING, CAPTIVE...
Many processes are affected by the interaction of liquids with surfaces. These interactions depend on the solid-liquid, solid-vapour, and liquid-vapour surface tensions, as well as the surface structure or roughness. A liquid in intimate contact with a rough surface will generally be better adhered than the same liquid on a smooth surface due to the increase in the contact area. Rough superhydrophobic surfaces with low surface energy, however, support the liquid on the peaks of the roughness,...
Topics: DTIC Archive, Klein,Philip, DEFENCE RESEARCH ESTABLISHMENT ATLANTIC DARTMOUTH (NOVA SCOTIA)...
The purpose of this project was to (a) scale-up the single stage polymerization process (b) increase spinning productivity (c) establish a tow process for processing large bundles of yarn in a continuous manner (d) produce 500 lbs of quality product, and (e) revise the projected economics of a 1 MM lb/yr production plant. The scale-up of the single-stage PBI polymerization process in a specially designed 50-gallon reactor was successful with the attainment of polymer I. V.'s in the 0.7 to 0.9...
Topics: DTIC Archive, Price, Arthur E., CELANESE RESEARCH CO SUMMIT NJ, *SPINNING(INDUSTRIAL PROCESSES),...
The purpose of this research was to produce in-situ ductile crystalline intermetallic compound-glassy composite materials with high strength and good plasticity. A range of composite specimens was prepared (Cu-Y, Y-Cu-Ag, Y-Cu-Al, Cu-Y-Ag, Mg-Cu-Y, Mg-Y-Ag, Mg-Y-Zn, Ni-Cu-Ti-Zr) using casting and melt spinning techniques. Structure was examined by x-ray diffraction; phase transformations were studied by differential scanning and isothermal calorimetry. Crystal-glassy composites formed in...
Topics: DTIC Archive, TOHOKU UNIV SENDAI (JAPAN), *COMPOSITE MATERIALS, *DUCTILITY, *INTERMETALLIC...
Spider silks have the potential to provide new bio-based materials for numerous military applications ranging from protective clothing to parachute cords to composite materials in aircraft. Specific amino acid motifs have been identified which have been conserved for over 125 million years in all spiders using their silk to physically trap their prey. No one has systematically varied the sequence motifs in the spider silk proteins and determined how this influences the mechanical properties of...
Topics: DTIC Archive, WYOMING UNIV LARAMIE DEPT OF MOLECULAR BIOLOGY, *SPIDERS, *SILK, BIOLOGY, COMPOSITE...
Palladium ion-containing polyamic acid nanofibers have been made using an electrospinning process. The fibers are approx. 500 nm in size and have high aspect ratios. Electrospinning is a process which uses an electrostatically driven jet of polymer fluid (solution or melt) to generate submicron - nanometer scale diameter polymer fibers. Typically, a voltage is applied to the fluid which is pumped through a spinnerette. The spinnerette can be a glass pipette, a syringe needle, or simply a hole...
Topics: DTIC Archive, Gaddy, G A, ARMY RESEARCH LAB ADELPHI MD SENSORS AND ELECTRON DEVICES DIRECTORATE,...
This paper describes the effect of melt-spinning process parameters such as orifice diameter, ejection pressure, and wheel speed, in determining the ribbon dimensions of Pb-Sn eutectic and low content A1 alloys. Rapid solidification techniques have been studied ever since the early experiments of Duwez et al. In recent years, the melt-spinning process (sometimes known as chill block casting) has been of particular interest because of the possibility of manufacturing iron-based amorphous alloys...
Topics: DTIC Archive, Charter,S J B, SUSSEX UNIV BRIGHTON (ENGLAND) SCHOOL OF ENGINEERING AND APPLIED...
Review of the state-of-the-art in analysis of the behavior of thin domes under internal pressures, specifically constant thickness torispherical domes, shows that extremely accurate prediction of stresses and critical buckling pressures for carefully machined domes can be achieved. However, forming procedures such as spinning and explosive forming produce domes of such variable quality and erratic, unpredictable behavior that accurate, efficient design is not possible. Thus an important area of...
Topics: DTIC Archive, Adachi, Jiro, ARMY MATERIALS AND MECHANICS RESEARCH CENTER WATERTOWN MA, *BUCKLING,...
Veneer log spin-out has been a continuing problem in the plywood industry, contributing to increased timber consumption and higher costs. To alleviate this problem, a laboratory prototype powered back-up roll (PBR) was designed and built by the Forest Products Laboratory. Because of satisfactory laboratory performance, a commercial model of the Forest Products Laboratory (FPL) PBR was installed in Boise Cascade's Yakima plywood plant. Operating under actual plant conditions, the PBR has...
Topics: DTIC Archive, Loehnertz,Stephen P, FOREST PRODUCTS LAB MADISON WI, *PERFORMANCE(ENGINEERING),...
The Sangamo-Schlumberger Elongational Viscometer (Model E4), as delivered by the manufacturer, did not maintain a constant elongational load under constant flow conditions and consequently could be be used to accurately measure elongational viscosity. The extensive modifications made to the instrument at DRES to correct this problem are described in detail as are other improvements made to the instrument. (Author)
Topics: DTIC Archive, Mayer,M D G, DEFENCE RESEARCH ESTABLISHMENT SUFFIELD RALSTON (ALBERTA), *FIBERS,...
Recently a number of compounds have been synthesized that can catalytically break down chemical warfare agents including G-type agents, VX and mustard. These compounds, including enzymes and polyoxometalates display significant level of hydrolytic and/or oxidative activity against a wide spectrum of chemical warfare agents. Multispectral protection could be achieved if appropriate catalysts were combined into a clothing system. However, these compounds have been difficult to incorporate into...
Topics: DTIC Archive, Walker, John, ARMY NATICK SOLDIER CENTER MA, *ENZYMES, *MEMBRANES, *PROTECTIVE...
Electrospinning is a nanofiber fabrication technique that has grown rapidly in popularity in recent years due to its potential in numerous biomedical applications in the military. The objective is to design an electrospinning system with custom software to control through a single interface and to automate the electrospinning spinning process. Using this production scheme, operators will be able to increase throughput to test spinning configurations more efficiently to suit their specific...
Topics: DTIC Archive, NAVAL MEDICAL RESEARCH UNIT (SAN ANTONIO) FORT SAM HOUSTON TX, *BIOMEDICINE,...
Inviscid Melt Spinning (IMS) has been shown to be appropriate for the production of mullite fibers. The formation of novel mullite fiber and the optimum processing conditions required to produce the fiber are described in two archival journal publications by Zhijun Xiao and the principal investigator. The development of a novel crucible design that was used to eliminate volatilization of SiO2 from the mullite melt and a corresponding change in melt composition is also described in a publication...
Topics: DTIC Archive, Mitchell, Brian S, TULANE UNIV NEW ORLEANS LA SCHOOL OF ENGINEERING, *HIGH...
A sorbent textile yarn was developed as a potential answer to the need for comfortable and durable chemical protective clothing. The yarn was prepared with an activated carbon slurry in triethylene glycol and a blend of polypropylene and wax. These are pumped and metered in separate streams into a 12-hole hollow needle-in-orifice-type multifilament hollow fiber spinneret. The extruded hollow filament with the blend as the walls and the slurry as the core is spun down a 15-foot cooling stack and...
Topics: DTIC Archive, Coplan, Myron J, ALBANY INTERNATIONAL CORP DEDHAM MA FRL DIV, *FABRICS, *FIBERS,...
In the report, the structural relaxation process of Fe10Ni65B15Si10 amorphous spin glass is described. The ribbon samples were prepared by melt spinning and heat treated using two different annealing processes AP1 and AP2. The techniques employed to investigate structural changes in the three alloy states (AQ (as-quenched), AP1 and AP2 were as follows: transmission electron microscopy, scanning electron microscopy with X-ray analysis, differential scanning calorimetry and density determination....
Topics: DTIC Archive, Janicki,A J, SALFORD UNIV (ENGLAND) DEPT OF PURE AND APPLIED PHYSICS, *GLASS,...
We have fabricated unilayer electroluminescent devices from soluble poly(p-pyridine) (PPy). The solubility of PPy in weak acids allows direct spin casting of the polymer films. The electroluminescence (EL) spectrum peaks at 2.5 eV (497 nm) corresponding to white light weighted toward the blue end of the spectrum. The photoluminescence (PL) spectrum peaks at 2.35 eV (530 nm). The operating voltages of the devices ranged from 4 to 12 V with current densities of 6 to 8 mA/sq mm. We compare our...
Topics: DTIC Archive, Gebler, D. D., OHIO STATE UNIV COLUMBUS DEPT OF PHYSICS, *ELECTROLUMINESCENCE,...
