Open Access. Powered by Scholars. Published by Universities.®
- Keyword
-
- BRC (2)
- Corrosion (2)
- DNA nanotechnology (2)
- Electrical Engineering (2)
- Adsorption (1)
-
- Case study (1)
- Chemistry (1)
- Composite strengthening (1)
- Cu-BTC (1)
- Density functional theory (1)
- Diffusion (1)
- Dispersion strengthening (1)
- Dysprosium (1)
- Electrical properties (1)
- Enrichment (1)
- Excitonic switch (1)
- Excitonics (1)
- FRET (1)
- Faculty in residence (1)
- Fe impurities (1)
- Gas–solid reactions (1)
- High energy ball milling (1)
- Housing (1)
- Hydrodynamics (1)
- Hydrogen evolution (1)
- Kinesiology (1)
- Kinetics (1)
- Living learning communities (1)
- Magnesium (1)
- Metal organic framework (MOF) (1)
Articles 1 - 12 of 12
Full-Text Articles in Engineering
Determining Hydrodynamic Forces In Bursting Bubbles Using Dna Nanotube Mechanics, Rizal F. Hariadi, Erik Winfree, Bernard Yurke
Determining Hydrodynamic Forces In Bursting Bubbles Using Dna Nanotube Mechanics, Rizal F. Hariadi, Erik Winfree, Bernard Yurke
Materials Science and Engineering Faculty Publications and Presentations
Quantifying the mechanical forces produced by fluid flows within the ocean is critical to understanding the ocean’s environmental phenomena. Such forces may have been instrumental in the origin of life by driving a primitive form of self-replication through fragmentation. Among the intense sources of hydrodynamic shear encountered in the ocean are breaking waves and the bursting bubbles produced by such waves. On a microscopic scale, one expects the surface-tension–driven flows produced during bubble rupture to exhibit particularly high velocity gradients due to the small size scales and masses involved. However, little work has examined the strength of shear flow rates …
Dna-Mediated Excitonic Upconversion Fret Switching, Donald L. Kellis, Sarah M. Rehn, Brittany L. Cannon, Paul H. Davis, Elton Graugnard, Jeunghoon Lee, Bernard Yurke, William B. Knowlton
Dna-Mediated Excitonic Upconversion Fret Switching, Donald L. Kellis, Sarah M. Rehn, Brittany L. Cannon, Paul H. Davis, Elton Graugnard, Jeunghoon Lee, Bernard Yurke, William B. Knowlton
Materials Science and Engineering Faculty Publications and Presentations
Excitonics is a rapidly expanding field of nanophotonics in which the harvesting of photons, ensuing creation and transport of excitons via Förster resonant energy transfer (FRET), and subsequent charge separation or photon emission has led to the demonstration of excitonic wires, switches, Boolean logic and light harvesting antennas for many applications. FRET funnels excitons down an energy gradient resulting in energy loss with each step along the pathway. Conversely, excitonic energy upconversion via upconversion nanoparticles (UCNPs), although currently inefficient, serves as an energy ratchet to boost the exciton energy. Although FRET-based upconversion has been demonstrated, it suffers from low FRET …
The Decision, Implementation And Assessment Of A Credit-Bearing Activity Class By Faculty In Residence: A Case Study, Janet Callahan, Geoff Harrison, Michael Humphrey, Cala Sielaff, Melissa Wintrow
The Decision, Implementation And Assessment Of A Credit-Bearing Activity Class By Faculty In Residence: A Case Study, Janet Callahan, Geoff Harrison, Michael Humphrey, Cala Sielaff, Melissa Wintrow
Materials Science and Engineering Faculty Publications and Presentations
This case study reports on a programmatic decision to require a credit-bearing course that was made by Faculty in Residence (FIR), including its implementation and results over a two-year period from 2010-2012. The focus is on FIR and on the impact of their decision upon the students enrolled in their Living Learning Communities (LLCs). The credit-bearing course was a Kinesiology Activities class taken by all seven LLCs at Boise State University. Anonymous feedback from students was obtained via end of semester surveys; results were used to improve the course. Survey feedback was analyzed to assess the value students perceived to …
High Temperature Oxidation Kinetics Of Dysprosium Particles, Brian J. Jaques, Darryl P. Butt
High Temperature Oxidation Kinetics Of Dysprosium Particles, Brian J. Jaques, Darryl P. Butt
Materials Science and Engineering Faculty Publications and Presentations
Rare earth elements have been recognized as critical materials for the advancement of many strategic and green technologies. Recently, the United States Department of Energy has invested many millions of dollars to enhance, protect, and forecast their production and management. The work presented here attempts to clarify the limited and contradictory literature on the oxidation behavior of the rare earth metal, dysprosium. Dysprosium particles were isothermally oxidized from 500 to 1000 °C in N2–(2%, 20%, and 50%) O2 and Ar–20% O2 using simultaneous thermal analysis techniques. Two distinct oxidation regions were identified at each isothermal temperature …
Stability And Decomposition Of Ca-Substituted Lanthanum Ferrite In Reducing Atmospheres, Patrick M. Price, Darryl P. Butt
Stability And Decomposition Of Ca-Substituted Lanthanum Ferrite In Reducing Atmospheres, Patrick M. Price, Darryl P. Butt
Materials Science and Engineering Faculty Publications and Presentations
Calcium-substituted lanthanum ferrites (La1–xCaxFeO3–δ x = 0, 0.1, 0.2, 0.3, 0.4) were synthesized in air and subsequently decomposed in reducing atmospheres. The partial pressure of oxygen (PO2) was controlled by varying the H2/H2O ratio by bubbling hydrogen/argon mixtures through water baths at controlled temperatures. Three regions of mass loss were identified as the PO2 was reduced, two of which were determined to be associated with decomposition reactions. Calcium was shown to decrease the thermal stability of the perovskite compound, but rather …
Carbon Dioxide Sorption In A Nanoporous Octahedral Molecular Sieve, Izaak Williamson, Eric B. Nelson, Lan Li
Carbon Dioxide Sorption In A Nanoporous Octahedral Molecular Sieve, Izaak Williamson, Eric B. Nelson, Lan Li
Materials Science and Engineering Faculty Publications and Presentations
We have performed first-principles density functional theory calculations, incorporated with van der Waals interactions, to study CO2 adsorption and diffusion in nanoporous solid – OMS-2 (Octahedral Molecular Sieve). We found the charge, type, and mobility of a cation, accommodated in a porous OMS-2 material for structural stability, can affect not only the OMS-2 structural features but also CO2 sorption performance. This paper targets K+, Na+, and Ba2+ cations. First-principles energetics and electronic structure calculations indicate that Ba2+ has the strongest interaction with the OMS-2 porous surface due to valence electrons donation to …
Atom Probe Study Of Irradiation-Enhanced Α′ Precipitation In Neutron-Irradiated Fe–Cr Model Alloys, Yaqiao Wu
Atom Probe Study Of Irradiation-Enhanced Α′ Precipitation In Neutron-Irradiated Fe–Cr Model Alloys, Yaqiao Wu
Materials Science and Engineering Faculty Publications and Presentations
Atom probe tomography (APT) was performed to study the effects of Cr concentrations, irradiation doses and irradiation temperatures on α′ phase formation in Fe–Cr model alloys (10–16 at.%) irradiated at 300 and 450 °C to 0.01, 0.1 and 1 dpa. For 1 dpa specimens, α′ precipitates with an average radius of 1.0–1.3 nm were observed. The precipitate density varied significantly from 1.1 × 1023 to 2.7 × 1024 1/m3, depending on Cr concentrations and irradiation temperatures. The volume fraction of α′ phase in 1 dpa specimens qualitatively agreed with the phase diagram prediction. For 0.01 dpa …
On The Fe Enrichment During Anodic Polarization Of Mg And Its Impact On Hydrogen Evolution, D. Lysne, S. Thomas, M. F. Hurley, N. Birbilis
On The Fe Enrichment During Anodic Polarization Of Mg And Its Impact On Hydrogen Evolution, D. Lysne, S. Thomas, M. F. Hurley, N. Birbilis
Materials Science and Engineering Faculty Publications and Presentations
Iron (Fe) is an unintentional impurity present in pure magnesium (Mg) and Mg alloys, albeit nominally in low and innocuous concentrations (< 100 ppmw). Since Fe, like most metals, is more noble than Mg, the presence of Fe impurities can serve as cathodic sites within the Mg matrix. During anodic polarization of Mg, incongruent dissolution can lead to undissolved Fe impurities accumulating upon the Mg surface, permitting an increase in the overall rate of hydrogen evolution. The experimental manifestation of the incongruent dissolution of Mg, has not yet been clarified, wherein, the extent and efficiency of Fe enrichment during anodic polarization is not known, and also the increase in the hydrogen evolution rate due to Fe enrichment has not been quantified. In this work, Mg specimens with Fe concentration between 40 to 13,000 ppmw were examined in 0.1 M NaCl to obtain a quantitative relation between the Fe concentration and the rate of cathodic hydrogen evolution. These base-line alloys were then anodically polarized to facilitate surface Fe enrichment, and subsequently again cathodically polarized to determine the impact of prior dissolution and Fe enrichment on the subsequent hydrogen evolution. A simple model to predict Fe enrichment was used to analyze the electrochemical data and predict the extent and efficiency of Fe enrichment.
Characterization Of Microstructure And Property Evolution In Advanced Cladding And Duct: Materials Exposed To High Dose And Elevated Temperature, Janelle P. Wharry
Characterization Of Microstructure And Property Evolution In Advanced Cladding And Duct: Materials Exposed To High Dose And Elevated Temperature, Janelle P. Wharry
Materials Science and Engineering Faculty Publications and Presentations
Designing materials for performance in high-radiation fields can be accelerated through a carefully chosen combination of advanced multiscale modeling paired with appropriate experimental validation. The studies reported in this work, the combined efforts of six universities working together as the Consortium on Cladding and Structural Materials, use that approach to focus on improving the scientific basis for the response of ferritic–martensitic steels to irradiation. A combination of modern modeling techniques with controlled experimentation has specifically focused on improving the understanding of radiation-induced segregation, precipitate formation and growth under radiation, the stability of oxide nanoclusters, and the development of dislocation networks …
Oxide Dispersion Strengthened Nickel Based Alloys Via Spark Plasma Sintering, Somayeh Pasebani, Aniket K. Dutt, Jatuporn Burns, Indrajit Charit, Rajiv S. Mishra
Oxide Dispersion Strengthened Nickel Based Alloys Via Spark Plasma Sintering, Somayeh Pasebani, Aniket K. Dutt, Jatuporn Burns, Indrajit Charit, Rajiv S. Mishra
Materials Science and Engineering Faculty Publications and Presentations
Oxide dispersion strengthened (ODS) nickel based alloys were developed via mechanical milling and spark plasma sintering (SPS) of Ni–20Cr powder with additional dispersion of 1.2 wt% Y2O3 powder. Furthermore, 5 wt% Al2O3 was added to Ni–20Cr–1.2Y2O3 to provide composite strengthening in the ODS alloy. The effects of milling times, sintering temperature, and sintering dwell time were investigated on both mechanical properties and microstructural evolution. A high number of annealing twins was observed in the sintered microstructure for all the milling times. However, longer milling time contributed to improved hardness and narrower …
Tip-Based Nanofabrication Of Arbitrary Shapes Of Graphene Nanoribbons For Device Applications, Huan Hu, Shouvik Banerjee, David Estrada, Rashid Bashir, William P. King
Tip-Based Nanofabrication Of Arbitrary Shapes Of Graphene Nanoribbons For Device Applications, Huan Hu, Shouvik Banerjee, David Estrada, Rashid Bashir, William P. King
Materials Science and Engineering Faculty Publications and Presentations
Graphene nanoribbons (GNRs) have promising applications in future nanoelectronics, chemical sensing and electrical interconnects. Although there are quite a few GNR nanofabrication methods reported, a rapid and low-cost fabrication method that is capable of fabricating arbitrary shapes of GNRs with good-quality is still in demand for using GNRs for device applications. In this paper, we present a tip-based nanofabrication method capable of fabricating arbitrary shapes of GNRs. A heated atomic force microscope (AFM) tip deposits polymer nanowires atop a CVD-grown graphene surface. The polymer nanowires serve as an etch mask to define GNRs through one step of oxygen plasma etching …
Reference Diffraction Patterns, Microstructure, And Pore-Size Distribution For The Copper (Ii) Benzene-1,3,5-Tricarboxylate Metal Organic Framework (Cu-Btc) Compounds, L. Li, I. Williamson
Reference Diffraction Patterns, Microstructure, And Pore-Size Distribution For The Copper (Ii) Benzene-1,3,5-Tricarboxylate Metal Organic Framework (Cu-Btc) Compounds, L. Li, I. Williamson
Materials Science and Engineering Faculty Publications and Presentations
No abstract provided.