Category

Awards

Home / Awards
AwardsFreedom CheteniSchool Administrators ResearchThe Superintendents Journal

CAREER: The role of seasonal migration in avian diversification: Colorado State University

Kristen Ruegg

[email protected]

The goal of this project is to explore the role of natural selection on the wintering grounds of seasonal migratory birds in maintaining or opposing adaptive divergence. The project takes advantage of the wealth of information available for one of the most widely studied groups of animals. Additionally, the work will provide important information across all habitats for use in conservation of Neotropical migratory birds, over half of which are declining, by predicting the capacity of seasonal migratory animals to adapt to rapid environmental change. The project includes a 3-part plan to improve STEM education for underrepresented minority groups at the local, national, and international level: 1) Bird Camp ? a multi-day educational outreach program targeting low-income schools in Fort Collins, Colorado; 2) Birds without Borders ? a series of Spanish language (with English subtitles) videos that highlight the work of Latin American and female scientists developed with nature documentary film makers; and 3) Mexico Bioinformatics Workshop ? an international genomic sequencing and bioinformatics workshop in collaboration with US and Mexican scientists. <br/><br/>Theoretical models have long supported the idea that strong migratory connections across the annual cycle will promote local adaptation to wintering areas, but empirical research to support this hypothesis is unexplored. This knowledge gap resulted from technological hurdles related to the inability to track migratory movements and assess patterns of adaptive divergence across the genome. The goal of the proposed work is to take advantage of recent advances in tracking technology and genomic sequencing to test theoretical predictions regarding the role of previously unexplored events on the wintering grounds in the process of adaptive evolution. The proposed work will leverage and synthesize population genomic and migratory movement data for 11 species of migratory birds to provide the first empirical test of the hypothesis that strong migratory connections across the annual cycle promote local adaptation to wintering areas. Genetic estimates of gene flow across time and space will be combined with habitat modeling to answer basic questions about the role of ecology and phenology in the process of adaptive divergence in seasonal migratory birds. The integration of ecological, molecular, and statistical approaches across a range of species will allow fundamental evolutionary questions to be addressed.<br/><br/>This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

AwardsFreedom CheteniSchool Administrators ResearchThe Superintendents Journal

Observing LIGO/Virgo-triggered neutron star mergers with the Dark Energy Camera: a new path for Cosmology: Brandeis University

Marcelle Soares-Santos

[email protected]

This project will make a precision measurement of the cosmic expansion rate. This hybrid program has a target of opportunity follow-up component and a survey component. The survey will strategically cover the regions of interest of many black hole events. It will collect a sample of gravitational-wave triggered neutron star merger events and a sample of black hole mergers for which potential host galaxies have been cataloged. The rate of cosmic expansion is a key parameter in modern cosmology. There is currently tension between local measurements and the results from cosmic microwave background studies, which motivates the pursuit of improved independent observables: gravitational waves have long been proposed as one such. This work covers two such alternatives. Broadening the impact of research on society at large requires effective communication to audiences from diverse backgrounds, including pre-college teens currently under-represented in STEM fields. The researcher will engage with high schools and emphasize under-represented groups, using the infrastructure of the Brandeis Science Communication Laboratory.<br/><br/>This study uses the full range of available data from the Dark Energy Camera (DECam) on NSF's Blanco 4-meter telescope in Chile, including images taken as part of the Dark Energy Survey (DES), as well as non-DES DECam images. It will also use data from another NSF facility, the Laser Interferometer Gravitational-wave Observatory, LIGO. Methods to be used include a Hubble diagram fit to a sample of neutron star mergers and a statistical dark sirens analysis for black hole events. This is a new method independent of other cosmological probes, because standard sirens are distance indicators based solely on general relativity. Detectors with enough sensitivity to enable this approach became operational in 2015. This research will fully exploit the novel datasets as multi-messenger probes for cosmology using DES/DECam data, making a measurement of the expansion rate with 3-5% (statistical) uncertainty by 2022, and enabling percent-level precision with future data from facilities like the Large Synoptic Survey Telescope.<br/><br/>This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

AwardsFreedom CheteniSchool Administrators ResearchThe Superintendents Journal

CAREER: Lead-Free Pseudohalide/Halide Perovskites for Next-Generation White Light-Emitting Diodes: University of Tulsa

Peifen Zhu

[email protected]

Lighting accounts for one-eighth of total U.S. electricity consumption. Conventional light sources such as incandescent light bulbs and fluorescence light tubes consume a lot of energy. Light-emitting diodes (LEDs) as a new generation lighting technology have extremely long life spans and consume much less energy. Despite rapid advances, LED technology is still in its early stage, and continued innovation and breakthroughs are needed to achieve the full potential of this technology. White LEDs are typically obtained by coating yellow luminescence materials (called ?phosphor?) onto blue LEDs. The lack of red component results in a cool color, which is not suitable for indoor lighting applications. The objective of this CAREER project is to develop highly efficient, environmentally friendly luminescent materials by using earth-abundant elements and low-cost and large-scale solution-based methods to replace the yellow phosphors. The project aims to develop highly efficient white LEDs with superior color quality, to speed up the widespread adoption of white LEDs, and to save energy. This project offers educational training in multidisciplinary areas such as Physics, Material Science, Electrical Engineering, and Mechanical Engineering for both undergraduate and graduate students. The research is also integrated with photonic education activities at local K-12 schools. This project is jointly funded by the Division of Materials Research and the Established Program to Stimulate Competitive Research (EPSCoR).<br/><br/>Metal halide perovskites are promising semiconductor materials for potential applications in optoelectronic devices. However, the common inclusion of lead and stability issues of this material are hampering the practical applications of these materials. The Principal Investigator is exploring new lead-free pseudohalide/halide perovskite nanocrystals and investigating the factors affecting their optical properties and stability by using theoretical and experimental methods. The knowledge obtained in this project improves our fundamental understanding of the physics of pseudohalide/halide perovskite materials and assists in discovering new environmentally friendly materials for next-generation white LEDs. The project expects to solve the issues challenging the practical applications of these materials and to accelerate their use in optoelectronic devices. The completion of this project results in a cost reduction of LED, widespread adoption of white LED in the general illumination market, and significant energy savings. This project is jointly funded by the Division of Materials Research and the Established Program to Stimulate Competitive Research (EPSCoR).<br/><br/>This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

AwardsFreedom CheteniSchool Administrators ResearchThe Superintendents Journal

Collaborative Research: How can we assess nitrogen saturation in xeric ecosystems? Accounting for water, time, and nitrogen availability: Board of Regents, NSHE, obo University of Nevada, Reno

Erin Hanan

[email protected]

Atmospheric nitrogen deposition has the potential to negatively affect ecosystems. It is usually clear if an ecosystem has received too much nitrogen because there are high levels of nitrogen in water and gas leaving the ecosystem. However, it is unclear how ecosystems in dry places, such as deserts, respond to added nitrogen. Drylands cover a third of Earth's land surface. It is important to understand how added nitrogen will affect these ecosystems. This project will also build the scientific workforce by training undergraduate students, graduate students, and postdoctoral associates in scientific methods. Many of these students will be reached through a Hispanic serving institution. Outreach activities to public K-12 schools will take place in southern California. This research will help predict how environmental change will affect ecosystem processes and services, such as clean air and water. This project will be especially important for understanding how dry ecosystems function. <br/> <br/>This project will evaluate nitrogen dynamics in watersheds receiving relatively little precipitation. The study sites are in southern California and receive different levels of atmospheric nitrogen deposition. The overall goal of the project is to develop a better framework for assessing nitrogen saturation. The research will expand nitrogen saturation theory to dry systems. It will account for the pulsed nature of rainfall during seasonal transitions. The project will quantify atmospheric nitrogen inputs using passive collectors and spatial modeling. Nitrogen measurements will also take place in the soil and water. These measurements will then be used to improve a biogeochemical model. The model will test watershed responses to nitrogen addition. The combined approaches of measurement and modeling in this study will advance theory surrounding the role of hydrology in driving nitrogen dynamics at the watershed scale.<br/><br/>This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

AwardsFreedom CheteniSchool Administrators ResearchThe Superintendents Journal

Math Practice for Physics: Building Math Fluency in an Introductory Undergraduate Physics Context: Arizona State University

David Meltzer

[email protected]

With support from the NSF Improving Undergraduate STEM Education Program: Education and Human Resources (IUSE: EHR), this project aims to serve the national interest by improving math fluency in introductory physics courses. The goal is to use research-based principles, together with methods from cognitive psychology and education research, to develop, implement, and assess a set of practice assignments called Math Practice. Math Practice is based on Essential Skills, an existing online platform used at Ohio State University. The initial scope of this project is to advance knowledge about how to address students' difficulties with math skills that are needed for success in introductory physics courses. This initial work will involve the 15,000 students in introductory physics courses at the target schools. However, because this intervention is both low-cost and logistically simple to implement, it could potentially improve performance and retention of the 500,000 students enrolled each year in physics classes nationwide. Furthermore, although the Math Practice application will be designed to help all students, it is likely to especially help underprepared students succeed and continue in physics courses. <br/><br/>The design of this proposed intervention is based on well-established research-based learning methods, including spaced and interleaved mastery practice with immediate feedback. This method is expected to automate and thereby reduce the cognitive load involved in applying basic math procedures in physics. Reducing cognitive load is important since physics tends to have complex, perceptually rich notation and contexts. The experimental design will include control conditions and "A/B testing" to explore optimal practice tasks and formats, such as comparison of alternative solutions and combinations of generic and context-rich format practice. The assessments will include validated math instruments, course performance, and motivational survey scales. These assessments will be used for iterative improvement of materials, investigation of areas of student difficulty, and investigation of potentially important student-level factors of performance and motivation. As a result, the practice tasks and assignment design will have a strong empirical and theoretical basis. Further, this project is expected to advance knowledge about student difficulties with essential math skills and the mechanisms underlying these difficulties, in an introductory physics context. In addition, it is expected to advance knowledge of the effectiveness of several specific kinds of empirically and theoretically promising math practice tasks. Finally, the project is expected to determine the extent to which student characteristics and motivations interact with this intervention. Thus, it will potentially provide information about the mechanisms of the difficulties and additional avenues for productive interventions. Given that math is essential in all STEM disciplines, the information learned in this project could potentially extend to all of STEM education. For example, the difficulties students have with symbolic notation in introductory physics are also likely to be encountered in other areas of STEM. The NSF IUSE: EHR Program supports research and development projects to improve the effectiveness of STEM education for all students. Through the Engaged Student Learning track, the program supports the creation, exploration, and implementation of promising practices and tools.<br/><br/>This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

AwardsFreedom CheteniSchool Administrators ResearchThe Superintendents Journal

Workshops for Faculty and Staff Development in Implementing Physics Advanced Laboratory Experiments: American Association of Physics Teachers

Lowell McCann

[email protected]

With support from the NSF Improving Undergraduate STEM Education Program: Education and Human Resources (IUSE: EHR), this project aims to serve the national interest by conducting a series of workshops to enable physics faculty and staff members to adopt improved experiments in their undergraduate advanced laboratories. These faculty and staff members are often assigned to teach these advanced laboratory courses in areas beyond their own research specialty. The instructors often lack the expertise to understand the background of the labs, design the labs, or best integrate the labs with other instruction. This project is especially important for instructors in small schools who often lack access to the facilities and expertise found in larger institutions. The project will create a mobile workshop capable of bringing workshops to these locations as well.<br/><br/>Previous workshops included quantum mechanics experiments with photons, nuclear magnetic resonance, quantum analogs, Hall effect, gravitational wave interferometry, graphene, high Tc superconductivity, using field programmable gate arrays (FPGAs), and open cavity helium neon laser experiments. The topics for the workshops supported by this award will be governed by demand and will include newly developed upper division laboratory experiments. The effectiveness of the workshops will be evaluated by questionnaires distributed to the participants and mentors immediately after the workshops. There will also be a follow-up survey sent to the participants 1.5 years after the workshops. The questions will deal with the content and value of the workshops, if the participants implemented the featured experiment at their home institutions, and what was required to do so. The NSF IUSE: EHR Program supports research and development projects to improve the effectiveness of STEM education for all students. Through the Engaged Student Learning track, the program supports the creation, exploration, and implementation of promising practices and tools.<br/><br/>This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

AwardsFreedom CheteniSchool Administrators ResearchThe Superintendents Journal

Math Practice for Physics: Building Math Fluency in an Introductory Undergraduate Physics Context: Ohio State University

Andrew Heckler

[email protected]

With support from the NSF Improving Undergraduate STEM Education Program: Education and Human Resources (IUSE: EHR), this project aims to serve the national interest by improving math fluency in introductory physics courses. The goal is to use research-based principles, together with methods from cognitive psychology and education research, to develop, implement, and assess a set of practice assignments called Math Practice. Math Practice is based on Essential Skills, an existing online platform used at Ohio State University. The initial scope of this project is to advance knowledge about how to address students' difficulties with math skills that are needed for success in introductory physics courses. This initial work will involve the 15,000 students in introductory physics courses at the target schools. However, because this intervention is both low-cost and logistically simple to implement, it could potentially improve performance and retention of the 500,000 students enrolled each year in physics classes nationwide. Furthermore, although the Math Practice application will be designed to help all students, it is likely to especially help underprepared students succeed and continue in physics courses. <br/><br/>The design of this proposed intervention is based on well-established research-based learning methods, including spaced and interleaved mastery practice with immediate feedback. This method is expected to automate and thereby reduce the cognitive load involved in applying basic math procedures in physics. Reducing cognitive load is important since physics tends to have complex, perceptually rich notation and contexts. The experimental design will include control conditions and "A/B testing" to explore optimal practice tasks and formats, such as comparison of alternative solutions and combinations of generic and context-rich format practice. The assessments will include validated math instruments, course performance, and motivational survey scales. These assessments will be used for iterative improvement of materials, investigation of areas of student difficulty, and investigation of potentially important student-level factors of performance and motivation. As a result, the practice tasks and assignment design will have a strong empirical and theoretical basis. Further, this project is expected to advance knowledge about student difficulties with essential math skills and the mechanisms underlying these difficulties, in an introductory physics context. In addition, it is expected to advance knowledge of the effectiveness of several specific kinds of empirically and theoretically promising math practice tasks. Finally, the project is expected to determine the extent to which student characteristics and motivations interact with this intervention. Thus, it will potentially provide information about the mechanisms of the difficulties and additional avenues for productive interventions. Given that math is essential in all STEM disciplines, the information learned in this project could potentially extend to all of STEM education. For example, the difficulties students have with symbolic notation in introductory physics are also likely to be encountered in other areas of STEM. The NSF IUSE: EHR Program supports research and development projects to improve the effectiveness of STEM education for all students. Through the Engaged Student Learning track, the program supports the creation, exploration, and implementation of promising practices and tools.<br/><br/>This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

AwardsFreedom CheteniSchool Administrators ResearchThe Superintendents Journal

Goethite Internal Thermometry – Improvements and Applications: California Institute of Technology

Kenneth Farley

[email protected]

Earth's climate varies over timescales from tens of years to millions of years in response to factors such as the sun's output, the arrangement of continents, ocean circulation, and the composition of the atmosphere. Much of what we know about past climate comes from analysis of minerals that carry a record of environmental conditions under which they grew. For example, polar ice constitutes an archive of climate extending back hundreds of thousands of years, while the carbonate skeletons of marine organisms carry similar information extending to hundreds of millions of years ago. At present, little is known about environmental conditions on the continents in deep time, primarily because few materials are known that carry a record of paleoclimate and for which an accurate formation age can be determined. Recent work indicates that the mineral goethite, a common iron oxide produced during weathering of continental rocks, can be radiometrically dated and also contains a record of its formation temperature. This award will explore this new method of characterizing continental paleoclimate by developing an efficient and automated technique to assess goethite formation temperature, and, once established, will use that technique to refine the temperature calibration of the method and apply it to suites of dated goethite specimens spanning the last 66 million years from localities in Europe, Brazil, and Australia. The end product will be an improved analytical methodology and amongst the first multimillion year paleotemperature records from the continents. The work will support a graduate student and will also engage students from a local community college in both the science of the undertaking and in the development and programming of the automated analytical system to be developed.<br/><br/>Goethite (FeOOH) is formed when Fe-bearing minerals interact with oxygen-bearing ground and surface waters. In weathering environments, this very insoluble phase forms, survives and accumulates, becoming a major constituent of ferricretes, gossans, paleosols and laterites. Two recent advances suggest that goethite can provide a unique record of paleotemperatures in settings, such as continental interiors, where almost no alternative paleothermometer exists. First, using the (U-Th)/He method goethite can be dated with an uncertainty <5%. A compilation of more than 1500 dates reveals that goethite formation spans, almost without interruption, the entire Cenozoic Era (0-66 Ma). Second, the two crystallographically-distinct oxygen sites have a readily-measured temperature-dependent contrast in 18O/16O, allowing single-phase paleothermometry. This project will link these two advances by undertaking three tasks designed to improve and refine the goethite-internal thermometry method, and to apply it in a systematic way for the first time. Task 1 is to design and build a new oxygen extraction line that can process goethite specimens in a completely automated and efficient way. This is a critical step to permit the large number of oxygen isotopic analyses required by this project. Task 2 is to refine the calibration of the goethite internal thermometer by analyzing synthetic goethites grown under a more diverse range of temperature and chemical conditions than previous work. This task will improve the uncertainty on goethite-internal temperatures, and will identify any as-yet unrecognized secondary controls on derived temperatures. Task 3 consists of the first systematic investigation of the goethite internal thermometry archive. Three suites of already-dated goethites will be analyzed for paleotemperature (total ~100 samples): supergene goethites from a deeply weathered sulfide deposit in the Amazon basin, goethite pisoliths from Central Europe, and goethites from the enigmatic Channel Iron Deposits of Western Australia. From each of these localities we will obtain oxygen isotope data that continuously spans many millions of years. These records will allow the researchers to assess internal consistency of the goethite temperature estimates, and to document for the first time paleotemperatures at high temporal resolution over the entire Cenozoic from three different continents. A fourth task is designed to engage members of the community with this project and simultaneously to teach them a useful skill. The principal investigator will lead a 3-day short-course in Labview, a programming language that fundamentally enables the proposed work. Competitively-selected students participating in the course will include individuals from local high schools and/or community colleges. The short-course will introduce the science and the approaches of goethite-internal thermometry, and coding examples and exercises will be drawn from the proposed analytical work. At the end of the short course one of these students will be selected for a ten-week internship to develop/document Labview code for the proposed extraction line. More traditional Broader Impacts of this project include support for a PhD student, refinement and verification of an entirely new paleoclimate tool that can be broadly applied, and creation of new paleoclimate records from previously unstudied areas that will be useful in geoscience and beyond.<br/><br/>This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

AwardsFreedom CheteniSchool Administrators ResearchThe Superintendents Journal

CAREER: How female aggression evolves: scaling genomics and phenomics from individuals to species: Indiana University

Kimberly Rosvall

[email protected]

Animal behavior is an interdisciplinary science, but research that integrates genetic and physiological mechanisms across multiple species is limited, leaving uncertainty as to how behavioral diversity arises in nature. The research fills this knowledge gap by focusing on female-female aggression, a behavior that is widespread and beneficial in the animal kingdom, but poorly understood. This research will experimentally test how individual differences in aggression arise at the level of the brain. In addition, experiments and comparative analyses will explore whether the physiological and environmental drivers of aggression are conserved or unique across multiple species. These efforts will yield quantitative models on the origin of behavioral variation, including perspectives that connect multiple levels of biological complexity, from genes to the environment and from individuals to species. This research is coupled with an educational plan that injects writing into research-based curricula in animal behavior. Activities include writing exercises and training that will improve scientific comprehension, critical thinking and communication in undergraduate and graduate students. Freshmen and sophomores will also be guided through the full scientific process through a new writing intensive course-based research program using data collected here. These activities will generate lasting institutional programs for improved research and scientific education. By removing poor writing as a barrier to success, these activities will attract and retain diverse scientists, generating a better prepared workforce in animal behavior and allied biological disciplines. Dissemination of results to community groups and schools will further amplify these goals, improving science literacy and knowledge of animal behavior for the general public and specialists alike.<br/><br/>The goal of this research is to integrate mechanistic and functional perspectives on within- and among-species variation in female aggression to unveil how behavioral evolution unfolds. By contrasting neurogenomic responses to aggression at both individual and species levels, new data will reveal how the mechanisms generating behavioral variation are conserved across levels of biological organization. Together with phylogenetic analyses on the evolutionary drivers of female aggression across >30 species, this research will systematically test the degree of parallelism (or lack thereof) in behavioral evolution, including both functional and mechanistic perspectives. Earlier efforts to understand competitive traits in females have met with limited success, but the hypotheses tested previously were derived from research on male animals. Considering that female birds are the initial dispersers and therefore front-line responders to new environmental challenges, the studies on females are especially critical. The integrated research and educational plan offers an extraordinary opportunity to link function and mechanism of behavior over evolutionary time, while also changing the culture of scientific training in ways that feed back to advances in animal behavior and allied STEM fields. The writing-research activities directed at multiple levels in higher education will better prepare the future STEM workforce. Through the mentorship of undergrad, grad, and postdoctoral trainees, and new partnerships with a writing intensive course-based research experience, this grant facilitates exceptional training in integrative behavioral research and establishes self-sustaining programs that will generate advances at the interface of behavior, evolution, and genomics. This work is jointly funded by the Behavioral Systems Cluster in the Division of Integrative Organismal Systems and the Evolutionary Processes Cluster in the Division of Environmental Biology.<br/><br/>This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

AwardsFreedom CheteniSchool Administrators ResearchThe Superintendents Journal

Effect of Extreme Nanoconfinement on the Thermodynamics and Transport Phenomena in Multiphasic Nanocomposite Coatings: University of Pennsylvania

Daeyeon Lee

[email protected]

Due to their flexibility, low density and recyclability, polymer films and coatings are playing an increasingly important role in the regulation of gas transport in a wide range of applications such as gas barriers for food, beverage, microelectronics and medical device packaging. Adding nanoparticles and/or blending multiple polymers together have proven to be effective methods to tune gas transport properties of nanocomposite films. Adding high concentrations of nanoparticles, in particular, is a powerful approach for producing high performance gas barriers and gas separation membranes. In this work the investigators will produce polymer films with high nanoparticle loadings via solvent-driven infiltration of polymers (SIP) into layers of nanoparticles. In this process, layers of nanoparticles, sitting on top of a polymer layer, are filled with a solvent. Some of this solvent moves into the polymer layer and softens or plasticizes, the polymer material. Once the polymer is plasticized, it can move into the nanoparticle layer, filling in the gaps between nanoparticles, by attractive interactions with either the solvent or the nanoparticles. The investigators will study which of these interactions are most important for polymer infiltration and how to tune these interactions to obtain polymer films with high loadings of nanoparticles. These hard, solid nanoparticles maintain barriers which limit polymer's ability to expand. These constrained polymers are expected to exhibit improved gas barrier properties, making them attractive for various packaging applications.<br/><br/>The investigators hypothesize the dynamics and thermodynamics of polymer chains in the interstices of nanoparticle packings under extreme nanoconfinement will be dominated by the thermodynamics of the interfaces. Solvent-infiltration of polymers (SIP) provides an ideal platform to characterize the dynamics and thermodynamics of confined polymers and transport of gas molecules through a binary polymer phase under extreme nanoconfinement. This work will lead to fundamental understandings of how polymer-solvent-nanoparticle interactions affect the infiltration mechanism and dynamics, as well as the thermodynamics of polymers under extreme nanoconfinement. The dynamics and resulting structure of SIP will be studied using in situ spectroscopic ellipsometry as well as molecular dynamics (MD) simulations. Efficient field-theoretic simulations, including self-consistent field theory, will be used to understand the thermodynamics in the packings and guide both the experiments and MD simulations. The structure-transport property relationship of SIP nanocomposites for different polymer molecular weight and polymer-nanoparticle interactions will be established by characterizing the structure using transmission electron microscopy, MD, and by testing the transport properties through quartz crystal microbalance with dissipation. Because theoretical frameworks to predict the dynamics and thermodynamics of SIP are not currently available, whenever possible, computation-based approaches will provide important guidelines for experimental conditions. The investigators will support involvement from underrepresented minority students by leading cooperative efforts with University of Puerto Rico-Humacao, Advancing Women in Engineering and Louise-Stoke Alliance for Minority Participation and Rachleff Scholars Program. The PIs also plan to develop educational programs and exhibits that showcase the nanocomposites with ultra-high loadings of natural nanomaterials with the help of undergraduate/graduate students for use during outreach activities organized through local high schools and science cafe events.<br/><br/>This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

1 2 3 4 5 608 609
About Exponent

Exponent is a modern business theme, that lets you build stunning high performance websites using a fully visual interface. Start with any of the demos below or build one on your own.

Get Started
Privacy Settings
We use cookies to enhance your experience while using our website. If you are using our Services via a browser you can restrict, block or remove cookies through your web browser settings. We also use content and scripts from third parties that may use tracking technologies. You can selectively provide your consent below to allow such third party embeds. For complete information about the cookies we use, data we collect and how we process them, please check our Privacy Policy
Youtube
Consent to display content from Youtube
Vimeo
Consent to display content from Vimeo
Google Maps
Consent to display content from Google
Spotify
Consent to display content from Spotify
Sound Cloud
Consent to display content from Sound