Index Catalog // ScholarsArchive@OSU

Chemical Solution Deposition and in-situ Structural Characterization of Pb-free, Bi-based, Piezoelectric Thin Films

Creator:: Fox, Austin J.
Abstract:: This work explores the electric field induced strain mechanisms in environmentally benign Bi0.5Na0.5TiO3 (BNT) based piezoelectric thin films. Although BNT-based materials show promise as replacements for toxic Pb-based piezoelectrics, the displacement mechanisms are not consistent between thin films and bulk materials, and the differences have yet to be well understood....
Resource Type:: Dissertation
Full Text:: as sensors, actuators, and transducers. Lead-based materials have received the most attention due

Disposable fabric-based electrochemical sensors fabricated from wax-transfer-printed fluidic cells and stencil-printed electrodes

Creator:: Downs, Corey, Nejely, Arianna, and Fu, Elain
Abstract:: Porous substrates transport fluid via capillary action and can be inexpensive, making them ideal for field-use sensors. Direct wax printing is one of the most commonly used fabrication methods to define fluid paths in standard substrates like cellulose and nitrocellulose. However, direct wax printing is not possible for flexible materials...
Resource Type:: Article
Full Text:: , I. Jeerapan and J. Wang, Wearable Chemical Sensors: Present Challenges and Future Prospects, ACS

Spatial Patterns of Chemical Weathering at the Basal Tertiary Nonconformity in California from Multispectral and Hyperspectral Optical Remote Sensing

Creator:: Sousa, Francis J. and Sousa, Daniel J.
Abstract:: Visible through shortwave (VSWIR) spectral reflectance of the geologic units across the basal Tertiary nonconformity (BTN) is characterized at three spatially disparate locations in California. At two of these sites, location-specific spectral endmembers are obtained from AVIRIS imaging spectroscopy and linear spectral mixture models are used to visualize spatial patterns...
Resource Type:: Article
Full Text:: functions of the WorldView 3, Sentinel-2 and Landsat 8 sensors. Simulated WorldView 3 data most closely

Investigation of MoS2 with Ambient Pressure X-ray Photoelectron Spectroscopy

Creator:: Dardzinski, Derek P.
Abstract:: Molybdenum disulfide (MoS2) has potential applications as a low-cost catalyst for the hydrogen evolution reaction (HER). Defects on MoS2, such as edge sites and sulfur vacancies, are known to be the major active sites for HER. Controlling the formation of these defects allows for the enhancement in reactivity of MoS2...
Resource Type:: Honors College Thesis
Full Text:: active surface area, high chemical activity, and high electrical conductivity to easily accept

Development of a Field Arsenic Test Utilizing PEG Functionalized Gold Nanoparticles

Creator:: Patel, Kian
Abstract:: Arsenic in its inorganic form is naturally present in groundwater. Continued exposure to arsenic contaminated water can result in long lasting health complications, ranging from cognitive development issues to cancer. One method which may be convertible to a field test is the use of PEG functionalized gold nanoparticles which aggregate...
Resource Type:: Honors College Thesis
Full Text:: , Mentor, representing Chemical, Biological, and Environmental Engineering

Eddy dynamics from satellite altimetry

Creator:: Fu, Lee-Lueng, Chelton, Dudley B., Le Traon, Pierre-Yves, and Morrow, Rosemary
Abstract:: Most of the kinetic energy of ocean circulation is contained in ubiquitous mesoscale eddies. Their prominent signatures in sea surface height have rendered satellite altimetry highly effective in observing global ocean eddies. Our knowledge of ocean eddy dynamics has grown by leaps and bounds since the advent of satellite altimetry...
Resource Type:: Article
Full Text:: submesoscales and to set a standard for future altimetric measurement of the ocean. b y l e e - l u e N g F

Designing redder and brighter fluorophores by synergistic tuning of ground and excited states

Creator:: Chen, Cheng, Baranov, Mikhail S., Zhu, Liangdong, Baleeva, Nadezhda S., Smirnov, Alexander Yu., Zaitseva, Snizhana O., Yampolsky, Ilia V., Solntsev, Kyril M., and Fang, Chong
Abstract:: We strategically modified the GFP core via chemical synthesis to make redder and brighter biomimetic fluorophores. Based on quantum calculations, solvatochromism analysis, and femtosecond Raman, we unveiled the additive effect of tuning the electronic ground and excited states, respectively, to achieve a dramatic emission redshift with a "double-donor-one-acceptor" structure.
Resource Type:: Article
Full Text:: ,de and Chong Fang*a We strategically modified the GFP core via chemical synthesis to make

Persistent spatial structuring of coastal ocean acidification in the California Current System

Creator:: Washburn, L., Russell, A., Menge, B. A., Hill, T., Cheriton, O., Nielsen, K. J., McManus, M. A., Feely, R. A., Gouhier, T., Byrne, R. H., Friederich, G., Sanford, E., Hacker, S., Chan, F., Blanchette, C. A., Gaylord, B., Barth, J. A., Sevadjian, J., Hofmann, G., and Chavez, F.
Abstract:: The near-term progression of ocean acidification (OA) is projected to bring about sharp changes in the chemistry of coastal upwelling ecosystems. The distribution of OA exposure across these early-impact systems, however, is highly uncertain and limits our understanding of whether and how spatial management actions can be deployed to ameliorate...
Resource Type:: Article
Full Text:: ), and (b) wind-driven cross-shelf surface transport (m2 s−1)(see scale inset in a). Map was generated

SIMstat: Hardware Design Considerations for Implementing a Low-Cost, Portable Potentiostat

Creator:: Cook, Jacob M.
Abstract:: Electroanalytical techniques allow scientists and engineers to characterize bulk solutions as well as interfaces. Potentiostats are commonly used by researchers in a variety of disciplines to analyze the chemistry which occurs at a working electrode surface. Advancements in microelectronics and the proliferation of open-source designs have allowed researchers to construct...
Resource Type:: Honors College Thesis
Full Text:: to accelerate both the design and implementation a new low-cost potentiostat for the Sensors and

Assessment of the Carbonate Chemistry Seasonal Cycles in the Southern Ocean From Persistent Observational Platforms

Creator:: Williams, N. L., Juranek, L. W., Feely, R. A., Russell, J. L., Johnson, K. S., and Hales, B.
Abstract:: Observations from Southern Ocean Carbon and Climate Observations and Modeling (SOCCOM) biogeochemical profiling Argo floats are used to characterize the climatological seasonal cycles and drivers of dissolved inorganic carbon, total alkalinity, pH, the partial pressure of carbon dioxide (CO2), and the saturation state of aragonite at the surface and at...
Resource Type:: Article
Full Text:: , L. W. Juranek1 , R. A. Feely3, J. L. Russell4 , K. S. Johnson5 , and B. Hales1 1College of Earth

ScholarsArchive@OSU

Chemical Solution Deposition and in-situ Structural Characterization of Pb-free, Bi-based, Piezoelectric Thin Films

Disposable fabric-based electrochemical sensors fabricated from wax-transfer-printed fluidic cells and stencil-printed electrodes

Spatial Patterns of Chemical Weathering at the Basal Tertiary Nonconformity in California from Multispectral and Hyperspectral Optical Remote Sensing

Investigation of MoS2 with Ambient Pressure X-ray Photoelectron Spectroscopy

Development of a Field Arsenic Test Utilizing PEG Functionalized Gold Nanoparticles

Eddy dynamics from satellite altimetry

Designing redder and brighter fluorophores by synergistic tuning of ground and excited states

Persistent spatial structuring of coastal ocean acidification in the California Current System

SIMstat: Hardware Design Considerations for Implementing a Low-Cost, Portable Potentiostat

Assessment of the Carbonate Chemistry Seasonal Cycles in the Southern Ocean From Persistent Observational Platforms

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