Clean Hydrogen Production And Carbon Dioxide Capture Methods, 2013 Florida International University
Clean Hydrogen Production And Carbon Dioxide Capture Methods, Sushant Kumar
FIU Electronic Theses and Dissertations
Fossil fuels constitute a significant fraction of the world’s energy demand. The burning of fossil fuels emits huge amounts of carbon dioxide into the atmosphere. Therefore, the limited availability of fossil fuel resources and the environmental impact of their use require a change to alternative energy sources or carriers (such as hydrogen) in the foreseeable future. The development of methods to mitigate carbon dioxide emission into the atmosphere is equally important. Hence, extensive research has been carried out on the development of cost-effective technologies for carbon dioxide capture and techniques to establish hydrogen economy.
Hydrogen is a clean energy fuel …
Synthesis Of Graphene Nanomaterials And Their Application In Electrochemical Energy Storage, 2013 Purdue University
Synthesis Of Graphene Nanomaterials And Their Application In Electrochemical Energy Storage, Guoping Xiong
Open Access Dissertations
The need to store and use energy on diverse scales in a modern technological society necessitates the design of large and small energy systems, among which electrical energy storage systems such as batteries and capacitors have attracted much interest in the past several decades. Supercapacitors, also known as ultracapacitors, or electrochemical capacitors, with fast power delivery and long cycle life are complementing or even replacing batteries in many applications. The rapid development of miniaturized electronic devices has led to a growing need for rechargeable micro-power sources with high performance. Among different sources, electrochemical micro-capacitors or micro-supercapacitors provide higher power density …
Soil Nutrient Availability Properties Of Biochar, 2013 California Polytechnic State University, San Luis Obispo
Soil Nutrient Availability Properties Of Biochar, Nicole C. Esposito
Master's Theses
Biochar’s high porosity and negative surface charge allows for numerous soil and plant benefits such as increased water retention, high nutrient availability, and plant growth. By analysing biochar’s effect of all of these factors, a system can be put in place in which soils can be remediated with the proper soil amendments. This report discusses and tests the effects of varying rates of biochar on pH levels, cation exchange capacity, and nutrient exchangeability (of calcium, magnesium, sodium, and potassium) in soil. Corn plants were also grown in soils of varying amendment types and analysed for plant growth and germination to …
Metal-Assisted Etching Of Silicon Molds For Electroforming, 2013 Argonne National Laboratory
Metal-Assisted Etching Of Silicon Molds For Electroforming, Ralu Divan, Dan Rosenthal '14, Karim Ogando, Leonidas E. Ocola, Daniel Rosenmann, Nicolaie Moldovan
Student Publications & Research
Ordered arrays of high-aspect-ratio micro/nanostructures in semiconductors stirred a huge scientific interest due to their unique one-dimensional physical morphology and the associated electrical, mechanical, chemical, optoelectronic, and thermal properties. Metal-assisted chemical etching enables fabrication of such high aspect ratio Si nanostructures with controlled diameter, shape, length, and packing density, but suffers from structure deformation and shape inconsistency due to uncontrolled migration of noble metal structures during etching. Hereby the authors prove that a Ti adhesion layer helps in stabilizing gold structures, preventing their migration on the wafer surface while not impeding the etching. Based on this finding, the authors demonstrate …
Development Of Novel Nanomaterials For Lithium-Air And Sodium-Air Batteries, 2013 The University of Western Ontario
Development Of Novel Nanomaterials For Lithium-Air And Sodium-Air Batteries, Yongliang Li
Electronic Thesis and Dissertation Repository
Lithium-air and sodium-air batteries are promising energy storage systems for future smart grids and electric vehicles due to their extremely high theoretical energy densities. However, electrode material development and architecture design for cathode as well as the battery cycleability are big challenges for these batteries. This research aims at developing various novel nanomaterials with desired morphology and structure as cathode materials for lithium-air and sodium-air batteries.
For lithium-air batteries, various carbon nanostructured cathodes were developed. They include: (1) Carbon black nanoparticles were treated under ammonia and carbon dioxide/hydrogen atmospheres and the surface area, porosity, defects, nitrogen-doping, and functional groups were …
An Investigation Of Energy Migration In Rare Earth Oxyorthosilicate Scintillation Materials, 2013 University of Tennessee, Knoxville
An Investigation Of Energy Migration In Rare Earth Oxyorthosilicate Scintillation Materials, Harold Edward Rothfuss
Doctoral Dissertations
In most scintillator applications, the energy resolution is an important scintillation property and is related to other scintillator properties. In order to observe how these properties relate to the energy resolution, a simulation was created to quantify most of these characteristics for a LSO:Ce scintillator. These results were validated with good agreement to experimental results. From the separable components of the simulation, an understanding of the contributions to the energy resolution broadening was developed. A thought to improve the energy resolution by improving the energy migration was tested by observing and modifying the scintillation kinetics of YSO:Ce. The scintillation kinetics …
Plasmonics Resonance Enhanced Active Photothermal Effects In Aluminum Nanoenergetics For Propulsion Applications, 2013 University of Tennessee, Knoxville
Plasmonics Resonance Enhanced Active Photothermal Effects In Aluminum Nanoenergetics For Propulsion Applications, Jacques Abboud
Doctoral Dissertations
In this dissertation, aluminum nanoparticles (Al NPs) are shown capable to on-demand enhance and control the local photothermal energy deposition, both spatially and temporally, via active photothermal effects initiated by the localized surface plasmon resonance (LSPR) phenomenon, and amplified by the Al exothermal oxidation reactions. Experiments in dry and wet environments along with computational modeling of the photothermal process are very desirable for gaining fundamental understanding, ignition optimization and parameter exploration.
Combined phenomena of motion and ignition of Al NPs are explored first in this study. Both resulting from exposing a pile of the nanoenergetics in hand to a single …
C-Ring Contaminate Identification By Spectroscopy And Elemental Mapping, 2013 California Polytechnic State University - San Luis Obispo
C-Ring Contaminate Identification By Spectroscopy And Elemental Mapping, Thien Q. Vu-Nguyen, Bernice Mills
STAR Program Research Presentations
A silver plated steel c-ring used to seal two steel pieces together was found to have contamination upon disassembly. Auger and x-ray fluorescence spectroscopy and mapping were used to identify the contaminate as molybdenum disulfide lubricant. Recommendations were made to avoid such contamination in the future.
Hfco7-Based Rare-Earth-Free Permanent-Magnet Alloys, 2013 University of Nebraska-Lincoln
Hfco7-Based Rare-Earth-Free Permanent-Magnet Alloys, Bhaskar Das
B. Das
This study presents the structural and magnetic properties of melt-spun HfCo7,HfCo7-xFex (0.25 ≤ × ≤ 1) and HfCo7Six(0.2 ≤ × ≤1.2) alloys. Appreciable permanent-magnet properties with a magnetocrystalline anisotropy of about 9.6-16.5 Mergs/cm3, a magnetic polarization Js ≈ 7.2-10.6 kG, and coercivities Hc = 0.5-3.0 kOe were obtained by varying the composition of these alloys. Structural analysis reveals that the positions of x-ray diffraction peaks of HfCo7 show good agreement with those corresponding to an orthorhombic structure having lattice parameters of about α = 4.719 Å, b = 4.278 Å, and c = 8.070 Å. Based on these results, a …
Materials Education And Research In Art And Design: A New Role For Libraries (Website), 2013 Rhode Island School of Design
Materials Education And Research In Art And Design: A New Role For Libraries (Website), Mark Pompelia
Materials Education and Research in Art and Design: A New Role for Libraries
No abstract provided.
Materials Education And Research In Art And Design: A New Role For Libraries (Program Sheet), 2013 Rhode Island School of Design
Materials Education And Research In Art And Design: A New Role For Libraries (Program Sheet), Mark Pompelia
Materials Education and Research in Art and Design: A New Role for Libraries
No abstract provided.
Materials Education And Research In Art And Design: A New Role For Libraries (Program Booklet), 2013 Rhode Island School of Design
Materials Education And Research In Art And Design: A New Role For Libraries (Program Booklet), Mark Pompelia
Materials Education and Research in Art and Design: A New Role for Libraries
No abstract provided.
Materials Education And Research In Art And Design: A New Role For Libraries (Survey Stats), 2013 Rhode Island School of Design
Materials Education And Research In Art And Design: A New Role For Libraries (Survey Stats), Mark Pompelia
Materials Education and Research in Art and Design: A New Role for Libraries
No abstract provided.
Materials Collection Creation And Administration: A New Role For Libraries (White Paper), 2013 Rhode Island School of Design
Materials Collection Creation And Administration: A New Role For Libraries (White Paper), Mark Pompelia
Materials Education and Research in Art and Design: A New Role for Libraries
The Problem/Opportunity: To define, identify, and guide design-based materials collections in academic settings and foster community among those with existing collections and/or those considering creating and supporting one.
Contents and topics:
- What is a materials collection?
- Why have a materials collection?
- Acquisition strategies
- Organizational approaches
- Programming possibilities
- Symposium summary
- Resources
Low Velocity Impact Tower Feasibility, Setup, And Impact Testing Of Carbon Fiber Reinforced Epoxy Thermoset And Peek Thermoplastic Matrix Composites, 2013 California Polytechnic State University - San Luis Obispo
Low Velocity Impact Tower Feasibility, Setup, And Impact Testing Of Carbon Fiber Reinforced Epoxy Thermoset And Peek Thermoplastic Matrix Composites, Brent Plehn
Materials Engineering
A low velocity impact tower was donated to Cal Poly's Materials Engineering Department along with four fiber reinforced polymer matrix composites. The tower was set up in building 192 in the Mechanical Testing Laboratory. Improvements were made to the tower including adding velocity detection capabilities, making loose hardware inclusive, adding an extra tower arm for better consistency, adding a double jawed clamp for faster testing, and rerouting the tower's compressed air system to improve performance. A standard operating procedure was drafted, tested, and redrafted for impact testing composite panels. The four composite panels consisted of two quasi-isotropic 16 ply AS-1 …
Analyzing The Flexural Properties Of Self-Constructed Bamboo Laminates, 2013 California Polytechnic State University - San Luis Obispo
Analyzing The Flexural Properties Of Self-Constructed Bamboo Laminates, Brett Dorren
Materials Engineering
Bamboo plies of 1/8" and 1/32" thicknesses were glued together to form multiple unidirectional and cross-ply laminates that measured 12" by 12". The thickness of each laminate was between 0.25" and 0.375". All laminates were pressed together with a Tetrahedron MTP-10 bench top precision press at 75°F and 1000 lbf for 40 minutes. Laminates were then cut with a band-saw into four 3" by 12" test specimens, 24 hours after pressing. Each test specimen was three-point bend tested to identify the modulus of rupture (MOR) and apparent bending stiffness. Three-point bend testing was also performed on laminates that were …
Evaluation Of High Phosphorus Electroless Nickel Platings To Protect Carbon Steel Heat Exchangers In Seawater Service, 2013 California Polytechnic State University - San Luis Obispo
Evaluation Of High Phosphorus Electroless Nickel Platings To Protect Carbon Steel Heat Exchangers In Seawater Service, Nathan Brink
Materials Engineering
The purpose of this project was to determine the suitability of using a high phosphorus electroless nickel (HPEN) coating to prevent corrosion in carbon steel heat exchangers in seawater service. 1 in. x 4 in. samples were cut from ¼ in. SA-516-70 pressure vessel plate, pickled to remove mill scale, dressed with 300 grit sand paper and sent out for plating with 2 mils of HPEN. Due to a clerical error during plating, samples were plated to a significantly lesser extent than requested. Samples were plated with approximately 0.6 mils of HPEN versus the 2 mils requested, however this was …
Measuring The Mechanical Properties Of A Newly Developed Discontinuous Carbon Fiber And Epoxy Composite, 2013 California Polytechnic State University - San Luis Obispo
Measuring The Mechanical Properties Of A Newly Developed Discontinuous Carbon Fiber And Epoxy Composite, Morgan Adams
Materials Engineering
Engineering firm Pratt & Miller have developed a new and previously untested carbon fiber/epoxy composite using a spray lay-up process similar to a process commonly used in fiberglass production. This new composite is made by using a pneumatic chop gun that simultaneously cuts the carbon fibers to a specific length and deposits the chopped fibers and resin onto surface of an exposed mold surface. The composite is then rolled down to flatten and better wet the fibers and then the whole mold is vacuum bagged at room temperature to cure. The flexural stiffness and flexural strength of the composite with …
Tensile Properties Of Adhesive Joints Between Alclad 2024-T3 Aluminum Sheets And Extruded 6061-T6511 Aluminum For Use In Ultralight Personal Aircraft, 2013 California Polytechnic State University - San Luis Obispo
Tensile Properties Of Adhesive Joints Between Alclad 2024-T3 Aluminum Sheets And Extruded 6061-T6511 Aluminum For Use In Ultralight Personal Aircraft, Kevin Jones
Materials Engineering
Cold cure two-part epoxy adhesives were tested in aluminum joints to investigate their viability for use in an ultralight aircraft. The joints consisted of Alclad 2024-T3 aluminum sheets adhesively bonded to extruded 6061-T6511 aluminum, and are part of low-load-bearing members required to carry a minimum load of 175 lbs./ft. or 14.58 lbs./in. The Alclad 2024-T3 and 6061-T6511 aluminum were prepared by sanding with 80 grit abrasive paper, the surface was cleaned with acetone to remove surface contaminants, rinsed with distilled water, and dried using paper towels. Once the surface was prepared, the test coupons were assembled using one of the …
Design Of A Children’S Earth Science Exhibit For The Exploration Station In Grover Beach, California With An Emphasis On Fog Collection, 2013 California Polytechnic State University - San Luis Obispo
Design Of A Children’S Earth Science Exhibit For The Exploration Station In Grover Beach, California With An Emphasis On Fog Collection, Kathryn Thomas
Materials Engineering
An outdoor earth science museum exhibit was designed for the Exploration Station in Grover Beach, California, and will use the harvesting methods of fog as a clean water resource to educate children. The design of the exhibit has two parts: a 1 m x 1 m static Standard Fog collector for long term fog collection which rises 2 m off the ground, and a mobile six-panel display consisting of six different materials and structures of meshes, all of which could potentially be used in a large scale fog collection setting. The six-panel portion will present the children with a hands-on …