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Full-Text Articles in Biomedical Engineering and Bioengineering
Crafting Nanostructured Neural Interfaces With Hydrogel Particles, Emily Ann Morin
Crafting Nanostructured Neural Interfaces With Hydrogel Particles, Emily Ann Morin
Doctoral Dissertations
Central nervous system neural device functionality hinges on effective communication with surrounding neurons. This depends on both the permissiveness of the device material to promote neuron integration and the ability of the device to avoid a chronic inflammatory response. Here, a facile approach has been developed exploring the multiple functionalities of hydrogel particles to provide cues to impart neural integration for such materials. Three distinct, yet interconnected tasks were undertaken: investigating hydrogel particle-modified substrate neuron integration and central nervous system inflammatory response, investigating guided hydrogel particle adsorption, and investigating hydrogel particles as local reservoirs for counteracting adverse effects from oxidative …
Magnetism Of Magnetite Nanoparticles As Determined By Mössbauer Spectroscopy, Hien-Yoong Hah
Magnetism Of Magnetite Nanoparticles As Determined By Mössbauer Spectroscopy, Hien-Yoong Hah
Masters Theses
Fe3O4 [Magnetite] nanoparticles have magnetism that differs greatly from their bulk counterparts. Whereas bulk Fe3O4 is a ferrimagnet, single-domain Fe3O4 nanoparticles have been found to be superparamagnetic. This allows for increased magnetization of the nanoparticles compared to the bulk when in a magnetic field. For most paramagnets, magnetization requires applied fields of a few Tesla at low temperatures. This is achievable through the application of superconducting magnets. In superparamagnets, the high susceptibility of the particles allows magnetization through a Nd-Fe-B permanent magnet at room temperature. This is caused by an increased …
Green Manufacturing Of Nanoparticles For Biomedical Applications, Sijia Yi
Green Manufacturing Of Nanoparticles For Biomedical Applications, Sijia Yi
Doctoral Dissertations
The vast majority of nanomaterials are chemically synthesized, a costly process, that is environmentally risky, and the produced nanoparticles are potentially toxic to patients. Nature-based nanomaterials, however, are proving to be much more biocompatible with lower environmental toxicity. Even though a variety of natural nanomaterials have been designed, fabrication technologies for the desired natural nanoparticles with reproducible quality, high productivity and low cost remain a challenge. My objective has been to establish strategies for the isolation, purification and characterization of nanoparticles using a production system based on green tea and fungus (Arthrobotrys oligospora) and also to develop new …