| Lithium Storage Mechanisms in Purpurin Based Organic Lithium Ion Battery Electrodes |
11 Dec 2012 |
6 pages |
| Authors:
Arava L Reddy; Subbiah Nagarajan; Porramate Chumyim; Sanketh R Gowda; Padmanava Pradhan; Swapnil R Jadhav; Madan Dubey; George John; Pulickel M Ajayan; ARMY RESEARCH LAB ADELPHI MD
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 | Current lithium batteries operate on inorganic insertion compounds to power a diverse range of applications, but recently there is a surging demand to develop environmentally friendly green electrode materials. To develop sustainable and eco-friendly lithium ion batteries, we report reversible lithium ion storage properties of a naturally occurring and abundant organic compound purpurin, which is non-toxic and derived from the plant madder. The carbonyl/hydroxyl groups present in purpurin molecules act ... |
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| An Integrated Computational and Experimental Approach Toward the Design of Materials for Fuel Cell Systems |
01 Oct 2012 |
192 pages |
| Authors:
Tom Zawodzinski; Al Anderson; Gus Scuseria; Andrzej Wieckowski; Sanjeev Mukerjee; Matt Neurock; Gerbrand Ceder; Nicola Marzari; Frank Ernst; Jay Mann; CASE WESTERN RESERVE UNIV CLEVELAND OH
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| The MURI set out with a series of objectives to construct a theory toolkit coupled to advanced experimentation for validation and support. We have achieved all of our initial objectives in this regard and have expanded the scope of the MURI to use theory and experimentation to drive the prediction and preparation of new and highly active catalysts for key processes in fuel cells. Succinctly stated, our theory and experimental ... |
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| Synthesis and Characterization of Nitrogen-Doped Graphene |
Sep 2012 |
79 pages |
| Authors:
D R Palaniuk; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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| Self standing nitrogen doped graphene sheets were produced by reduction-expansion method, which utilizes graphite oxide (GO) and urea as precursor materials. For comparison, an Atmospheric Microwave Plasma Torch system (ATP) was used to produce graphene samples under argon and nitrogen atmospheres from GO. Graphene samples were characterized by XRD, TEM, SEM, BET and Raman Spectroscopy. The GO and urea mixtures decomposition-reduction process, as well as nitrogen doped graphene stability at ... |
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| The Comparison of Hydrotreated Vegetable Oils With Respect to Petroleum Derived Fuels and the Effects of Transient Plasma Ignition in a Compression-Ignition Engine |
Sep 2012 |
117 pages |
| Authors:
M A Carr; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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| This thesis presents the results of an experimental study of the combustion characteristics of algae and camelina derived biofuels as well as the effects of Transient Plasma Ignition in a Compression-Ignition Engine. Testing was conducted for Hydrotreated Renewable Diesel, algae, and benchmarked against F-76 and Diesel #2 fuels as well as Hydrotreated Renewable Jet, camelina, benchmarked against JP-5 across a matrix of constant engine speeds and engine loads in a ... |
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| Coulometric Study of Rates of Oxalic Acid Adsorption at a Polycrystalline Platinum Electrode |
Sep 2012 |
26 pages |
| Authors:
Sol Gilman; ARMY RESEARCH LAB ADELPHI MD SENSORS AND ELECTRON DEVICES DIRECTORATE
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| Quantitative measurement of adsorption/desorption of oxalic acid on a platinum (Pt) electrode from a perchloric acid supporting electrolyte has been accomplished for the first time using a fast potential scan preceded by a sequence of potential steps. From a dilute solution of oxalic acid, adsorption of the anion is so rapid as to be diffusion-controlled over the range of potentials at which the surface is free of adsorbed oxygen; most ... |
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| Carbon-Coated Current Collectors for High-Power Li-Ion Secondary Batteries |
29 Aug 2012 |
10 pages |
| Authors:
Nae-Lih Wu; NATIONAL TAIWAN UNIV TAIPEI
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| The ultimate goal of this project is to develop a viable C-coating process of the current collector to improve the overall power performance of the electrode of Li-ion batteries. During this period, study was focused onto the development of a low-temperature chemical vapor deposition (PA-CVD) process for C deposition. The PA-CVD vacuum chamber was set-up. The researchers completed the investigation of the effects of the processing parameters; the characteristics of ... |
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| Multifunctional (Nano)Composite Materials for Energy Storage: Towards Flexible Load-Bearing Batteries and Supercapacitors |
Aug 2012 |
44 pages |
| Authors:
K Evanoff; S Boukhalfa; J Benson; B Hertzberg; P Dixon; A Magasinsky; I Kovalenko; Gleb Yushin; GEORGIA INST OF TECH ATLANTA SCHOOL OF MATERIALS SCIENCE AND ENGINEERING
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| C-cp-Ag Composite Electrodes: A New Approach for Metal Air Batteries |
Aug 2012 |
20 pages |
| Authors:
Amy C Marschilok; STATE UNIV OF NEW YORK AT STONY BROOK DEPT OF MATERIALS SCIENCE AND ENGINEERING
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| Active Structural Fibers for Multifunctional Composite Materials |
31 Jul 2012 |
24 pages |
| Authors:
Henry A Sodano; FLORIDA UNIV GAINESVILLE DEPT OF MECHANICAL AND AEROSPACE ENGINEERING
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| Energy-Storing Structures: Composite Capacitors and Batteries |
30 Jul 2012 |
30 pages |
| Authors:
Danny O'Brien; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD
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| Weighted Phase Lag Index Stability as an Artifact Resistant Measure to Detect Cognitive EEG Activity During Locomotion |
24 Jul 2012 |
21 pages |
| Authors:
Troy M Lau; Joseph T Gwin; Kaleb G McDowell; Daniel P Ferris; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD HUMAN RESEARCH AND ENGINEERING DIRECTORATE
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| High-density electroencephalography (EEG) with active electrodes allows for monitoring of electrocortical dynamics during human walking but movement artifacts have the potential to dominate the signal. One potential method for recovering cognitive brain dynamics in the presence of gait-related artifact is the Weighted Phase Lag Index. Methods We tested the ability of Weighted Phase Lag Index to recover event-related potentials during locomotion. Weighted Phase Lag Index is a functional connectivity measure ... |
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| Electrochemical Energy Storage Materials |
Jul 2012 |
40 pages |
| Authors:
Michael F Durstock; Benji Maruyama; Patrick S Carlin; Gyanaranjan Pattanaik; Jacob M Haag; Daylond Hooper; Gordon Sargent; Placidus Amama; Neal A Pierce; Rahul Rao; AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH MATERIALS AND MANUFACTURING DIRECTORATE
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| The objective of the Electrochemical Energy Storage program is to develop enabling materials systems for future electrochemical energy storage devices. The program focuses on developing nanostructured electrodes and improved solid state electrolytes for high power & energy density devices and to explore new 3D nanostructured architectures to enable optimal performance. The goal is to supply performance improvement (i.e. increased power and energy density, longer shelf and use life, and higher ... |
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| Development of Large Capacity Lead-Carbon Hybrid Ultracapacitors for Energy Storage |
Jul 2012 |
21 pages |
| Authors:
Ashok K Shukla; INDIAN INST OF SCIENCE BANGALORE (INDIA)
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| Hybrid ultracapacitors (HUCs) are a new class of emerging electrochemical energy storage devices. Among various hybrid ultraultracapacitors, PbO2 Activated Carbon is an attractive system owing to its high cell voltage that provides it both high energy and power densities. In this project, we have designed and developed 12V / kF-range Lead-Carbon (LC) HUCs with absorbent-glass-mat (AGM) and silica-gel electrolyte configurations and tested their performance. The capacitance for the HUC in ... |
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| Process Characterization of Electrical Discharge Machining of Highly Doped Silicon |
01 Jun 2012 |
128 pages |
| Authors:
Gregory A Crawford; MASSACHUSETTS INST OF TECH CAMBRIDGE
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| Electrical Discharge Machining (EDM) is an advanced machining process that removes material via thermal erosion through a plasma arc. The machining process is accomplished through the application of high frequency current (typically through a fine wire or some other electrode) to a conductive workpiece. The electrode is physically separated from the workpiece by some small distance and the potential difference is commonly discharged through an insulating dielectric material such as ... |
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| Modeling Heterogeneous Carbon Nanotube Networks for Photovoltaic Applications Using Silvaco Atlas Software |
Jun 2012 |
97 pages |
| Authors:
Adam R Garfrerick; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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| Recent developments in carbon nanotube technology have allowed for semi-transparent electrodes to be created which can possibly improve the efficiency of solar cells. A method for simulating the use of semi-transparent carbon nanotube networks as a charge collector for solar cells in Silvaco ATLAS software is presented in this thesis. Semi-transparent carbon nanotube networks allow for a greater area of charge collection on the surface of solar cells as well ... |
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| Development and Experimental Operation of a Flashboard Plasma Cathode Test Stand |
Jun 2012 |
81 pages |
| Authors:
Ali I Yilmaz; NAVAL POSTGRADUATE SCHOOL MONTEREY CA DEPT OF PHYSICS
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| Flashboard Plasma Cathodes (FBPCs) are potential rugged electron sources for generating high-current beams needed for future High Power Microwave Weapons. In FBPCs, dielectric material is in contact with electrodes in a vacuum. Plasma is generated by a surface flashover discharge on the surface of the dielectric between the electrodes and an electron beam is extracted from the plasma by applying an electric field between the anode and cathode. While FBPCs ... |
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| Stabilizing Acetylcholinesterase on Carbon Electrodes Using Peptide Nanotubes to Produce Effective Biosensors |
22 Mar 2012 |
36 pages |
| Authors:
Todd J Stevens; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING AND MANAGEMENT
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| A biosensor for the detection of organophosphates in water was created by immobilizing acetylcholinesterase (AChE) on a carbon screen printed electrode using peptide nanotubes (PNT) and Nafion(registered trademark). This sensor was used with acetylthiocholine (ASCh) substrate to detect the inhibitory effects of malathion. The stability of the encapsulated enzyme was measured over 50 days of storage at 4 deg C in a phosphate buffer solution. The oxidation of thiocholine, a ... |
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| Improved Analysis Techniques for Cylindrical and Spherical Double Probes (Preprint) |
21 Mar 2012 |
10 pages |
| Authors:
Brian Beal; Lee Johnson; Daniel Brown; Joseph Blakely; Daron Bromaghim; AIR FORCE RESEARCH LAB EDWARDS AFB CA PROPULSION DIR
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| A versatile double Langmuir probe technique has been developed by incorporating analytical fits to Laframboise's numerical results for ion current collection by biased electrodes of various sizes relative to the local electron Debye length. Application of these fits to the double probe circuit has produced a set of coupled equations that express the potential of each electrode relative to the plasma potential as well as the resulting probe current as ... |
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| Nanoscale Probing of Electrical Signals in Biological Systems |
18 Mar 2012 |
37 pages |
| Authors:
Mark C Hersam; NORTHWESTERN UNIV EVANSTON IL
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| An improved molecular-level description of trans-membrane ion currents has the potential to impact many areas of military and civilian importance such as disease diagnosis, drug development/screening, and technologies that interface between living cells and microelectronic circuitry. Ultimately, these developments would imply improvements in health and quality of life for individuals that have suffered from injuries or wounds that have compromised senses such as sight and hearing. Furthermore, technologies involving the ... |
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| Space Propulsion and Power |
08 Mar 2012 |
23 pages |
| Authors:
Mitat A Birkan; AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH
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| Aersol Jet Deposition of Geramic Thin Films for Electromechanical Applications |
Mar 2012 |
26 pages |
| Authors:
Mary Ayyadurai; Thomas Reitz; AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH PROPULSION DIRECTORATE
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| A novel direct write printing technology namely, aerosol jet printing (AJP) developed by Optomec Inc., has been exploited using suitable processing methods to deposit dense and porous layer components required for the operation of solid oxide fuel cell (SOFC). The research objective of the program is to develop, based on the capabilities of the deposition system, the necessary processing science to reliably deposit SOFC components to have the desired porosity/density ... |
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| Porous Ag/P/C Composite Electrodes: A New Approach for Metal Air Batteries |
29 Feb 2012 |
15 pages |
| Authors:
Amy C Marschilok; NEW YORK STATE UNIV RESEARCH FOUNDATION AMHERST NY
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| This project has encompassed the design, preparation, characterization, and electrochemical study of novel composite electrodes for use in metal air batteries. Metal air batteries offer the potential for unprecedented high energy density relative to batteries in common use today. Improvement of cathode oxygen reduction activity will increase current capability and power output of metal air batteries, facilitating development of small, lightweight, long-life power sources for deployment in currently inaccessible locations. ... |
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| Nastic Actuation: Electroosmotic Pumping for Shape-Changing Materials |
23 Feb 2012 |
8 pages |
| Authors:
Benjamin Shapiro; MARYLAND UNIV COLLEGE PARK OFFICE OF RESEARCH ADMINISTRATION AND ADVANCEMENT
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| The goal was to demonstrate a flexible actuation technology that would enable smart materials with both large stresses and strains. Using microchannels that would pump fluid by electroosmosis to deform flexible materials, we experimentally demonstrated devices that created large material deformations at high pressure, and whose performance matched theoretical predictions. |
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| Development of a 30 kW Inductively Coupled Plasma Torch Facility for Advanced Aerospace Material Investigations |
21 Feb 2012 |
88 pages |
| Authors:
Douglas G Fletcher; Jason M Meyers; Walten P Owens; VERMONT UNIV BURLINGTON DEPT OF MECHANICAL ENGINEERING
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| A 30 kW Inductively Coupled Plasma (ICP) Torch for testing high-temperature materials for aerospace applications has been designed, constructed, and made operational at the University of Vermont. A key advantage of the inductive heating approach to creating the plasma is the electrodeless operation, which avoids the copper contamination from electrode attachment of traditional arc heaters. Heat flux probes have been fabricated and used to characterize the heating rates. In addition, ... |
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| Pseudocapacitor with High Energy and Power Densities Based on Nickel Oxide Nanostructures |
11 Jan 2012 |
7 pages |
| Authors:
John Q Xiao; DELAWARE UNIV NEWARK DEPT OF CHEMICAL ENGINEERING
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| We developed a simple and commercially viable procedure to fabricate supercapacitors electrodes based on NiO/Ni nanocomposites. By developing a slow charge and fast discharge process, high energy and power densities of 60 Wh/kg and 10 kW/kg were achieved simultaneously. |
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| Control of Current and Voltage Oscillations in a Short dc Discharge Making Use of External Auxiliary Electrode |
Jan 2012 |
5 pages |
| Authors:
A S Mustafaev; V I Demidov; I Kaganovich; S F Adams; M E Koepke; A Grabovskiy; WEST VIRGINIA UNIV MORGANTOWN
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| A dc discharge with a hot cathode is subject to current and voltage plasma oscillations, which have deleterious effects on its operation. The oscillations can be inhibited by installing an auxiliary electrode, placed outside of anode. By collecting a modest current through a small opening in anode, we show that the discharge becomes stable, in a certain pressure range. This method of avoiding current oscillations can be used, for example, ... |
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| Long-range Electron Transport in Geobacter sulfurreducens Biofilms is Redox Gradient-Driven |
Jan 2012 |
7 pages |
| Authors:
Rachel M Snider; Sarah M Strycharz-Glaven; Stanislav D Tsoi; Jeffrey S Erickson; Leonard M Tender; NAVAL RESEARCH LAB WASHINGTON DC CENTER FOR BIOMOLECULAR SCIENCE AND ENGINEERING
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| Geobacter spp. can acquire energy by coupling intracellular oxidation of organic matter with extracellular electron transfer to an anode (an electrode poised at a metabolically oxidizing potential) forming a biofilm extendingmany cell lengths away from the anode surface. It has been proposed that long-range electron transport in such biofilms occurs through a network of bound redox cofactors thought to involve extracellularmatrix c-type cytochromes, as occurs for polymers containing discrete redox ... |
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| DNA Based Electrochromic and Photovoltaic Cells |
Jan 2012 |
30 pages |
| Authors:
Agnieszka J Pawlicka; SAO PAULO UNIV (BRAZIL) DEPT OF PHYSICS
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| DNA is an abundant natural product with very good biodegradation properties and can be used to obtain gel polymer electrolytes (GPEs) with high ionic conductivity and good stability. This report presents results of developed GPE membranes based on DNA. The ionic conductivity results of the DNA-based membranes at room temperature were in the range of 10-3-10-5 S/cm and increased linearly as a function of temperature, obeying predominantly an Arrhenius relationship. ... |
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| Al/CuxO/Cu Memristive Devices: Fabrication, Characterization, and Modeling |
Jan 2012 |
125 pages |
| Authors:
Nathan R McDonald; STATE UNIV OF NEW YORK AT ALBANY
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| Memristive devices have become very popular in recent years due to their potential to dramatically alter logic processing in CMOS circuitry. Memristive devices function as electrical potentiometers, allowing for such diverse applications as memory storage, multi-state logic, and reconfigurable logic gates. This research covered the fabrication, characterization, and modeling of Al/CuxO/Cu memristive devices created by depositing Al top electrodes atop a CuxO film grown using plasma oxidation to grow the ... |
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| Noninvasive Electrical Neuroimaging of the Human Brain during Mobile Tasks including Walking and Running |
Jan 2012 |
134 pages |
| Authors:
Joseph T Gwin; MICHIGAN UNIV ANN ARBOR DEPT OF MECHANICAL ENGINEERING
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| Noninvasive brain imaging during mobile activities could have far-reaching scientific, clinical, and technological benefits. Electroencephalography (EEG) is the only mobile noninvasive sensing modality with sufficient temporal resolution to record brain activity on the time scale of natural motor behavior. In the past, EEG has been limited to stationary settings to prevent contamination by electromyographic and movement artifacts. I overcame this limitation by using Independent Component Analysis (ICA) to parse electrocortical ... |
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| Modular Electronics for Flash Memory Production |
28 Dec 2011 |
12 pages |
| Authors:
J F Stoddart; Chad A Mirkin; NORTHWESTERN UNIV EVANSTON IL DEPT OF CHEMISTRY
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| The continued reduction of the feature density of memory chips has increased interest in the utilization of molecules as the functional elements in electronic memory devices because of the advantages they offer in terms of size compared to conventional circuit elements. The development of molecular electronic devices for memory applications in computing, however, continues to be an important challenge to researchers in nanoscience and nanotechnology, both from a fundamental and ... |
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| Experimental Demonstration of Multi Barrier Plasma Actuators (MBPA) |
23 Dec 2011 |
10 pages |
| Authors:
Subrata Roy; Ryan Durscher; FLORIDA UNIV GAINESVILLE DEPT OF MECHANICAL AND AEROSPACE ENGINEERING
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| This report is a summary of a one-year effort on demonstration experiments of a novel set of multi-barrier plasma actuators (MBPA) by the PI s research team. The typical dielectric barrier discharge (DBD) plasma actuator consists of two electrodes separated by a dielectric layer. The surrounding air locally ionizes when a radio frequency (RF), high voltage waveform is applied to one of the electrodes. This results in an electrohydrodynamic (EHD) ... |
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| Demonstration of a Wingless Electromagnetic Air Vehicle |
20 Dec 2011 |
56 pages |
| Authors:
Subrata Roy; David Arnold; Jenshan Lin; Tony Schmidt; Rick Lind; Ryan Durscher; Mark Riherd; Tomas Houba; Richard Anderson; Justin Zito; FLORIDA UNIV GAINESVILLE
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| The goal of this project is the proof-of-concept demonstration of an electromagnetically driven wingless aircraft with no moving component that will be able to selflift, hover and fly reliably especially under gust and impact conditions. |
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| Studies of Properties of Pain Networks as Predictors of Targets of Stimulation for Treatment of Pain |
05 Dec 2011 |
8 pages |
| Authors:
C C Liu; P Franaszczuk; N E Crone; C Jouny; F A Lenz; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD HUMAN RESEARCH AND ENGINEERING DIRECTORATE
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| Two decades of functional imaging studies have demonstrated pain-related activations of primary somatic sensory cortex (S1), parasylvian cortical structures (PS), and medial frontal cortical structures (MF), which are often described as modules in a pain network. The directionality and temporal dynamics of interactions between and within the cortical and thalamic modules are uncertain. We now describe our studies of these interactions based upon recordings of local field potentials (LFPs) carried ... |
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| Corrosion in Fuel/Natural Seawater Environments |
18 Nov 2011 |
15 pages |
| Authors:
Brenda J Little; Jason S Lee; Richard I Ray; NAVAL RESEARCH LAB STENNIS DETACHMENT STENNIS SPACE CENTER MS OCEANOGRAPHY DIV
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| Experiments were designed to evaluate corrosion-related consequences of storing/transporting petroleum and alternative fuels in contact with natural seawater. Fuels included petroleum JP-5, camelina derived JP-5, petroleum F-76, algal derived F-76, and mixtures of the petroleum-based and alternative fuels. Corrosion rates were estimated from polarization resistance measurements and corrosion was measured by weight loss. Corrosion attack morphology and corrosion products were analyzed by three-dimensional profilometry, environmental scanning microscopy, and energy dispersive ... |
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| Carbon-Coated Current Collectors for High-Power Lithium-Ion Secondary Batteries |
20 Sep 2011 |
10 pages |
| Authors:
Nae-Lih Wu; NATIONAL TAIWAN UNIV TAIPEI DEPT OF CHEMICAL ENGINEERING
|
| The goal of this project is to develop a viable C-coating process of the current collector in order to improve the overall power performance of the electrode of Li-ion batteries. Two major parts of research works toward this goal were carried out. (1) Al and Cu foils were subjected to high-temperature chemical vapor deposition (T-CVD) to produce surface C-coating, and the resulting foils were used as current collectors for LiFePO4 ... |
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| Development of Nanoporous Carbide-Derived Carbon Electrodes for High-Performance Lithium-Ion Batteries |
Sep 2011 |
93 pages |
| Authors:
Kamryn M Sakamoto; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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| Lithium ion batteries are the state-of-the-art power sources for portable electronic devices and, due to their superior energy and power densities, are promising candidates for the demanding energy storage applications of the U.S. Navy and other branches of the military. While graphitic carbon is currently the most common anode material in lithium ion batteries, it suffers from low specific capacity (372 mAh/g) and poor power characteristics. In contrast, amorphous carbons ... |
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| TCAD Analysis of Heating and Maximum Current Density in Carbon Nanofiber Interconnects |
Sep 2011 |
87 pages |
| Authors:
Jason A Brunton; NAVAL POSTGRADUATE SCHOOL MONTEREY CA DEPT OF ELECTRICAL AND COMPUTER ENGINEERING
|
| As devices shrink, the current density through interconnects increases proportionally making new materials a necessity for industry growth. Carbon nanofiber (CNF) and carbon nanotube's (CNT) potential for high current density make them a possible replacement for metal contacts. Learning the limitations of CNFs and CNTs is important if they are to be used in next-generation electronics. As current density increases, heat is generated throughout the CNF structure. This heating eventually ... |
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| Studies of Charge Transport in DNA Films Using the Time-of-Flight (TOF) Technique (Postprint) |
Sep 2011 |
9 pages |
| Authors:
Fahima Ouchen; James G Grote; Perry P Yaney; Timothy Gorman; AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH MATERIALS AND MANUFACTURING DIRECTORATE
|
| Measurements were carried out on salmon DNA-based films, including as-received DNA (molecular weight, MW2000 kDa) without and with hexacetyltrimethl-ammonium chloride (CTMA) surfactant, and sonicated DNA of MW200 kDa with CTMA. The test specimens were spin-coated or drop-cast films on ITO-coated quartz slides with a gold charge-collecting electrode. To protect the films from atmospheric influences, the TOF devices were coated with a 200-400 nm polyurethane passivation layer. A quadrupled 20 ns, ... |
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| After Effects of Welding Armor Steels |
31 Aug 2011 |
26 pages |
| Authors:
Matt Rogers; ARMY TANK AUTOMOTIVE RESEARCH DEVELOPMENT AND ENGINEERING CENTER WARREN MI
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| Electrode Material Enhancements for Lead-Acid Batteries |
09 AUG 2011 |
5 pages |
| Authors:
William Murray; Sudhakar Jagannathan; Frank Malo; EXIDE TECHNOLOGIES MILTON GA
|
| Exide Technologies has received a contract from TARDEC to develop a 4HN format battery with AGM separator technology. In addition to redesigning the current flooded battery to use Absorbed Glass Mat separator, the battery will be the test vehicle for materials research aimed at improving battery performance. The effort is split into two topics: ceramic additives for positive and carbon additives for negative active materials. |
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| Periodically Porous Top Electrodes on Vertical Nanowire Arrays for Highly Sensitive Gas Detection |
AUG 2011 |
7 pages |
| Authors:
Hyun J. In; Christopher R. Field; Pehr E. Pehrsson; NATIONAL ACADEMY OF SCIENCES-NATIONAL RESEARCH COUNCIL WASHINGTON DC
|
| Nanowires of various materials and configurations have been shown to be highly effective in the detection of chemical and biological species. In this paper, we report a novel, nanosphere-enabled approach to fabricating highly sensitive gas sensors based on ordered arrays of vertically aligned silicon nanowires topped with a periodically porous top electrode. The vertical array configuration helps to greatly increase the sensitivity of the sensor while the pores in the ... |
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| Coulometric Study of Acetate Adsorption at a Polycrystalline Platinum Electrode |
Aug 2011 |
24 pages |
| Authors:
Sol Gilman; ARMY RESEARCH LAB ADELPHI MD SENSORS AND ELECTRON DEVICES DIRECTORATE
|
| The adsorption of acetic acid from a perchloric acid electrolyte blocks the adsorption of oxygen on a polycrystalline platinum electrode. Using a staircase of potential pulses, it is possible to follow the adsorption process from the moment of surface activation and under well-defined conditions of mass transport. Under those conditions, the initial rate of blockage adheres well to that anticipated by diffusion control with each mole of acid preventing the ... |
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| Growth and Transfer of Graphene for Device Fabrication |
Aug 2011 |
14 pages |
| Authors:
Kevin Hauri; ARMY RESEARCH LAB ADELPHI MD SENSORS AND ELECTRON DEVICES DIRECTORATE/ELECTRONICS AND RADIOFREQUENCY DIV
|
| The unique electronic properties of graphene enable the development of field effect transistors with potential for speeds much higher than the existing technology. Diluted methane chemical vapor deposition growth of graphene on a nickel substrate has resulted in potentially useful multilayer graphene layers. These graphene layers were grown on nickel substrates deposited onto silicon (Si)/silicon dioxide (SiO2) wafers by evaporation and sputter methods. The graphene must be transferred from the ... |
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| Development of a Lumped Element Circuit Model for Approximation of Dielectric Barrier Discharges |
Aug 2011 |
16 pages |
| Authors:
Thomas C Underwood; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD VEHICLE TECHNOLOGY DIRECTORATE
|
| This work presents a circuit model for calculating the total energy dissipated into neutral species for pulsed direct current (DC) dielectric barrier discharge (DBD) plasmas. Based on experimental observations, it is assumed that nanosecond pulsed DBDs, which have been proposed for aerodynamic flow control, can be approximated by the two independent regions of a homogeneous electric field. An equivalent circuit model is developed for the homogeneous region near the exposed ... |
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| Weighted Phase Lag Index (WPLI) as a Method for Identifying Task-Related Functional Networks in Electroencephalography (EEG) Recordings during a Shooting Task |
Aug 2011 |
16 pages |
| Authors:
Sandhya Rawal; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD HUMAN RESEARCH AND ENGINEERING DIRECTORATE
|
| Weighted Phase Lag Index (WPLI) is a methodology used to identify nonzero phase lag statistical interdependencies between electroencephalography (EEG) time series from pairs of electrodes. Identifying nonzero phase lags may be useful to identify neural interaction among regions based on the known delay for brain region-to-region communication. This project applies WPLI analysis to previously collected EEG data from a Soldier performing a shooting task. WPLI was examined on EEG data ... |
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| Developing Infrared (IR) Transparent Conductive Electrode Technology for Multi-Functional Infrared (IR) Sensing |
13 JUL 2011 |
26 pages |
| Authors:
Xuejun Lu; MASSACHUSETTS UNIV LOWELL
|
| Transparent conductive electrode technology has long been desired in a great variety of applications, such as light-emitting diode (LED), solar cells, transparent smart skins, invisible electronics and antennas, and embedded sensing and imaging. Current state-of-the-art transparent conductive electrode technology is based on indium tin oxide (ITO). However, ITO is high transparent only in the visible region. In MIR/LWIR spectrum region, the transmission of the ITO electrode is poor. (Our recent ... |
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| Advanced Relay Design and Technology for Energy-Efficient Electronics |
07 Jul 2011 |
96 pages |
| Authors:
Jaeseok Jeon; CALIFORNIA UNIV BERKELEY DEPT OF ELECTRICAL ENGINEERING AND COMPUTER SCIENCE
|
| As the era of traditional Complementary-Metal-Oxide-Semiconductor (CMOS) technology scaling is coming to an end, continual improvements in integrated-circuit (IC) performance and cost per function are becoming difficult to achieve without increasing power density. This necessitates the investigation of alternate device technologies that surmount the fundamental CMOS energy-efficiency limit and hence enable ultra-low-power ICs. To that end, a nanoelectro- mechanical (NEM) relay technology is promising, because of its immeasurably low offstate ... |
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| Coulometric Study of Ethanol Adsorption at a Polycrystalline Platinum Electrode |
Jul 2011 |
28 pages |
| Authors:
Sol Gilman; ARMY RESEARCH LAB ADELPHI MD SENSORS AND ELECTRON DEVICES DIRECTORATE
|
| For dilute solutions of ethanol in 1N solution of perchloric acid (HClO4), rates of adsorption and saturation surface coverages were determined by measuring the charge corresponding to blockage of hydrogen adsorption sites under well-controlled conditions of surface cleanliness/activity and mass transport. In a dilute solution of ethanol, oxidative adsorption rates maximize at 0.3 V, dropping off at more cathodic potentials due to competition with adsorbed hydrogen and dropping off at ... |
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| Bio-Inspired Assembly of Artificial Photosynthetic Antenna Complexes for Development of Nanobiodevices |
24 JUN 2011 |
17 pages |
| Authors:
Mamoru Nango; NAGOYA INST OF TECH (JAPAN)
|
| The purpose of this proposal is to use photosynthetic antenna pigment complexes of purple photosynthetic bacteria in order to control the direction and orientation of the complex on electrodes with pattern for developing nanobiodevices (nanobiophotonics). The advantage of the pigment complex is its high efficiency of light-energy conversion throughout the near UV to near IR region and much higher durability using these methods than ordinary light-harvesting (LH) complex isolated from ... |
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Reports by Keyword(s)
ELECTRODES
