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Ph.D Nanoscale Science
Seminar Series Spring 2018


Miho Nakamura
Tokyo Medical and Dental University

Associate Professor with the Institute of Biomaterials and Bioengineering
will be presenting

A new concept for hydroxyapatite in bone remodeling -the nano structure and response to mechanical strain

Abstract:

Because of their excellent biocompatibility and osteoconductivity, ceramic biomaterials are clinically utilised as bone grafts for the reconstruction of injured bone tissues. Modification of the ceramic surface, leading to enhanced interaction with osteogenic cells in bone tissues, can improve the osteoconductive properties of bone grafts. The fundamental concept for bone tissue engineering is to use the natural biological responses in the host body. Here, we explored the biophysical...

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Ph.D Nanoscale Science
Doctoral Dissertation Presentation


Gaurav Singh

Doctoral Advisor: Dr. Marcus Jones

“Investigations into Photo-Excited State Dynamics in
Colloidal Quantum Dots"

Abstract:

Colloidal Quantum dots (QDs) have garnered considerable scientific and technological interest as a promising material for next generation solar cells, photo-detectors, lasers, bright light-emitting diodes (LEDs), and reliable biomarkers. However, for practical realization of these applications, it is crucial to understand the complex photo-physics of QDs that are very sensitive to surface chemistry and chemical surroundings. Depending on the excitation density, QDs can support single or multiple excitations. The first part of this talk addresses evolution of QD excited state dynamics in the regime of low excitation intensity. We use temperature-resolved time-resolved fluorescence spectroscopy to study exciton dynamics from picoseconds to microseconds and use kinetic modeling based on classical electron transfer to show...

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Ph.D Nanoscale Science
Doctoral Presentation


Nathan Behm

Doctoral Advisor: Dr. Qiuming Wei

“The Influence of Reinforcement Size on the
Microstructure and Mechanical Behavior of a
Nanostructured Aluminum-Based Metal Matrix Composite”

Abstract:

With increased availability and growing commercial applications, aluminum-based metal matrix composites show promise as high specific strength structural materials. Before they can be implemented however, they require thorough characterization and testing. A novel nanostructured aluminum-based metal matrix composite (MMC) was characterized through a combination of microstructural analysis and mechanical testing. Two composites were studied, an aluminum MMC reinforced with 50 nm boron carbide, (B4C) and an aluminum MMC reinforced with 500 nm boron carbide. Transmission electron microscopy (TEM) analysis revealed an ultra-fine grained matrix with grains on the order of 100 – 300 nm. The quasi-static and dynamic response of the composites was compared with the behavior of...

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Nanoscale Science - Faculty in Focus

The Poler Research Group consists of students from the Nanoscale Science Ph.D. program, the Optical Science and Engineering Ph.D. program, the Master’s of Science program in Chemistry, Undergraduates from various disciplines (Chemistry, Physics, Biology, Engineering, and Math), and High School students from around the state. We pursue fundamental studies of molecular and nanoscale systems to understand directed and self-assembly processes. We aim to design new particles and materials with higher functionality and effectiveness. Our long-term interests are toward: novel mechanisms for mechanical transducers and sensors in NEMS, energy storage in supercapacitors, catalytic solar fuel production, water purification, and optical metamaterials.