Late News Poster Session: Nanomaterials
Program Organizers: MS&T Administration, MS&T PCC
Tuesday 11:00 AM
October 19, 2021
Room: Exhibit Hall B
Location: Greater Columbus Convention Center
Poster
P1-34: Resilient SiOC/Epoxy Nanocomposites: Tulsi Patel1; Robert Wheeler1; Derek King1; Andrew Sharits1; Ryan Nielsen2; Pania Newell2; Lisa Rueschhoff1; 1Air Force Research Laboratory; 2University of Utah
Structural nanocomposites possess a unique combination of materials properties that can meet the demanding requirements for aerospace applications. Polymer nanocomposites are extensively used for their established polymer manufacturing methods and high specific strength, but are often limited by reinforcement characteristics (e.g., size, shape, loading). This work presents a novel approach to control reinforcement morphology by substituting nanoparticles for nanofoams. Three SiOC nanofoams (spherical, wormlike, bicontinuous) were fabricated via self-assembly of block copolymers, and subsequently infiltrated with epoxy to create SiOC/epoxy nanocomposites. In-situ SEM compression testing, HAADF STEM tomography, and FEA were executed to probe structure-property relationships. Ultimately, tunability of mechanical properties—stiffness, toughness, and resilience—was demonstrated, and coupled with ease of fabrication, such reinforcement-controlled nanocomposites could be transformational across various platforms.
Poster
P1-35: Spectroscopic Studies of Nd3+ Doped KY3F10 Nanoparticles: Sangeetha Balabhadra1; Michael Reid1; Jon-Paul Wells1; 1University of Canterbury
Neodymium (Nd3+) doped fluoride nanocrystals are the commonly investigated due to the fact that the Nd3+ excitation and emission lie within the biological window regions (700–1500 nm) where the transparency of living tissue is high (due to low optical absorption)1,2, offering much potential for deep-tissue imaging3 and temperature sensing4. So far, the many reports on Nd3+ doped materials focus upon concentration dependent near-infrared emission1-4 however, there are not many studies that report the concentration dependence on their absorption spectra. It is important to gain knowledge of the wavelength of the absorption maxima to enhance the emission intensity of the nanoparticles for applications in bio-medicine. In this study we have hydrothermally synthesized neodymium Nd3+ ion doped KY3F10 nanoparticles varying different Nd3+ ion concentrations. The effect of Nd3+ ion concentration on their absorption maximum in three biological window regions have been recorded using a high resolution FTIR absorption spectroscopy.